TPS2041B
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TPS2041B, TPS2042B |
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TPS2043B, TPS2044B, TPS2051B |
DGN−8 D−8 |
D−16 |
TPS2052B, TPS2053B, TPS2054B |
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www.ti.com |
SLVS514E – APRIL 2004 – REVISED JANUARY 2006 |
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CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES
FEATURES
∙70-mΩ High-Side MOSFET
∙500-mA Continuous Current
∙Thermal and Short-Circuit Protection
∙Accurate Current Limit (0.75 A min, 1.25 A max)
∙Operating Range: 2.7 V to 5.5 V
∙0.6-ms Typical Rise Time
∙Undervoltage Lockout
∙Deglitched Fault Report (OC)
∙No OC Glitch During Power Up
∙Maximum Standby Supply Current:
1-µA (Single, Dual) or 2-µA (Triple, Quad)
∙Bidirectional Switch
∙Ambient Temperature Range: -40°C to 85°C
∙ESD Protection
∙UL Recognized, File Number E169910
APPLICATIONS
∙Heavy Capacitive Loads
∙Short-Circuit Protections
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TPS2041B/TPS2051B |
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TPS2042B/TPS2052B |
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EN1 |
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EN2 |
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TPS2043B/TPS2053B |
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TPS2044B/TPS2054B |
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D PACKAGE |
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GND |
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GND |
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OC1 |
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OC1 |
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EN1 |
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EN1 |
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EN2 |
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GND |
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OC3 |
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OC3 |
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OUT3 |
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EN3 |
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EN3 |
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NC |
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OC4 |
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EN4 |
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²All enable inputs are active high for the TPS205xB series. NC − No connect
DESCRIPTION
The TPS204xB/TPS205xB power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporates 70-mΩ N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1 A typically.
GENERAL SWITCH CATALOG
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80 mΩ, dual |
TPS2042B |
500 mA |
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33 mΩ, single |
TPS201xA |
0.2 A − 2 A |
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TPS2052B |
500 mA |
Ω |
80 mΩ, triple |
80 mΩ, quad |
Ω |
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TPS2046 |
250 mA |
80 m |
, dual |
80 m |
, quad |
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TPS202x |
0.2 A − 2 A |
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TPS203x |
0.2 A − 2 A |
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TPS2056 |
250 mA |
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TPS2062 |
1 A |
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TPS2066 |
1 A |
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80 mΩ, single |
TPS2014 |
600 mA |
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260 mΩ |
TPS2100/1 |
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TPS2080 |
500 mA |
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TPS2015 |
1 A |
IN1 |
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IN1 |
500 mA |
TPS2081 |
500 mA |
TPS2043B 500 mA |
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TPS2041B |
500 mA |
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IN2 |
10 mA |
TPS2082 |
500 mA |
TPS2053B 500 mA |
TPS2044B |
500 mA |
TPS2085 |
500 mA |
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IN2 |
OUT |
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TPS2051B |
500 mA |
TPS2102/3/4/5 |
TPS2090 |
250 mA |
TPS2047 |
250 mA |
TPS2086 |
500 mA |
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TPS2054B |
500 mA |
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TPS2045 |
250 mA |
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1.3 Ω |
TPS2091 |
250 mA |
TPS2057 |
250 mA |
TPS2087 |
500 mA |
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IN1 |
500 mA |
TPS2048 |
250 mA |
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TPS2095 |
250 mA |
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TPS2055 |
250 mA |
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IN2 |
100 mA |
TPS2092 |
250 mA |
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TPS2058 |
250 mA |
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TPS2061 |
1 A |
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TPS2096 |
250 mA |
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TPS2065 |
1 A |
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TPS2097 |
250 mA |
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. |
Copyright © 2004–2006, Texas Instruments Incorporated |
Products conform to specifications per the terms of the Texas |
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Instruments standard warranty. Production processing does not |
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necessarily include testing of all parameters. |
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TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
AVAILABLE OPTION AND ORDERING INFORMATION
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RECOMMENDED |
TYPICAL |
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PACKAGED DEVICES(1) |
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TA |
ENABLE |
MAXIMUM |
SHORT-CIRCUIT |
NUMBER OF |
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CONTINUOUS |
CURRENT LIMIT |
SWITCHES |
MSOP (DGN) |
SOIC (D) |
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LOAD CURRENT |
AT 25°c |
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Active low |
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Single |
TPS2041BDGN |
TPS2041BD |
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Active high |
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Single |
TPS2051BDGN |
TPS2051BD |
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Active low |
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Dual |
TPS2042BDGN |
TPS2042BD |
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-40°C to 85°C |
Active high |
0.5 A |
1 A |
Dual |
TPS2052BDGN |
TPS2052BD |
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Active low |
Triple |
-- |
TPS2043BD |
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Active high |
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Triple |
-- |
TPS2053BD |
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Active low |
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Quad |
-- |
TPS2044BD |
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Active high |
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Quad |
-- |
TPS2054BD |
(1)The package is available taped and reeled. Add an R suffix to device types (e.g., TPS2042BDR)
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
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UNIT |
Input voltage range, VI(IN), VI(INx) (2) |
-0.3 V to 6 V |
Output voltage range, VO(OUT), VO(OUTx) (2) |
-0.3 V to 6 V |
Input voltage range, VI(EN), VI(ENx), VI(EN), VI(ENx) |
-0.3 V to 6 V |
Voltage range, VI(/OC), VI(OCx) |
-0.3 V to 6 V |
Continuous output current, IO(OUT), IO(OUTx) |
Internally limited |
Continuous total power dissipation |
See Dissipation Rating Table |
Operating virtual junction temperature range, TJ |
-40°C to 125°C |
Storage temperature range, Tstg |
-65°C to 150°C |
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds |
260°C |
Human body model MIL-STD-883C |
2 kV |
Electrostatic discharge (ESD) protection |
500 V |
Charge device model (CDM) |
(1)Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)All voltages are with respect to GND.
DISSIPATING RATING TABLE
PACKAGE |
TA ≤ 25°C |
DERATING FACTOR |
TA = 70°C |
TA = 85°C |
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POWER RATING |
ABOVE TA = 25°C |
POWER RATING |
POWER RATING |
DGN-8 |
1712.3 mW |
17.123 mW/°C |
941.78 mW |
684.93 mW |
D-8 |
585.82 mW |
5.8582 mW/°C |
322.20 mW |
234.32 mW |
D-16 |
898.47 mW |
8.9847 mW |
494.15 mW |
359.38 mW |
2
TPS2041B, TPS2042B TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
RECOMMENDED OPERATING CONDITIONS
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MIN |
MAX |
UNIT |
Input voltage, VI(IN), VI(INx) |
2.7 |
5.5 |
V |
Input voltage, VI(EN), VI(ENx), VI(EN), VI(ENx) |
0 |
5.5 |
V |
Continuous output current, IO(OUT), IO(OUTx) |
0 |
500 |
mA |
Operating virtual junction temperature, TJ |
-40 |
125 |
°C |
ELECTRICAL CHARACTERISTICS
over recommended operating junction temperature range, VI(IN) = 5.5 V, IO = 0.5 A, VI(/ENx) = 0 V (unless otherwise noted)
PARAMETER |
TEST CONDITIONS(1) |
MIN TYP MAX UNIT |
POWER SWITCH |
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rDS(on)
tr (2)
tf (2)
Static drain-source on-state |
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-40°C ≤ TJ ≤ 125°C |
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mΩ |
resistance, 5-V operation |
VI(IN) = 5 V or 3.3 V, |
IO = 0.5 A |
70 |
135 |
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and 3.3-V operation |
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Static drain-source on-state |
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-40°C ≤ TJ ≤ 125°C |
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mΩ |
resistance, 2.7-V |
VI(IN) = 2.7 |
V, |
IO = 0.5 A |
75 |
150 |
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operation(2) |
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Rise time, output |
VI(IN) = 5.5 |
V |
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0.6 |
1.5 |
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VI(IN) |
= 2.7 |
V |
C = 1 µF, |
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1 |
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L |
TJ = 25°C |
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= 5.5 |
V |
RL = 10 Ω |
0.05 |
0.5 |
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Fall time, output |
I(IN) |
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VI(IN) = 2.7 |
V |
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0.05 |
0.5 |
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ENABLE INPUT EN AND ENx |
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VIH |
High-level input voltage |
2.7 V ≤ VI(IN) ≤ 5.5 V |
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2.7 V ≤ VI(IN) ≤ 5.5 V |
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Low-level input voltage |
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Input current |
VI(ENx) = 0 V or 5.5 V |
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-0.5 |
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0.5 µA |
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t |
(2) |
Turnon time |
C |
L |
= 100 µF, R |
L |
= 10 Ω |
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on |
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(2) |
Turnoff time |
C |
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= 100 µF, R |
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= 10 Ω |
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L |
L |
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off |
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CURRENT LIMIT |
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V = 5 V, OUT connected to GND, |
TJ = 25°C |
0.75 |
1 |
1.25 |
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IOS |
Short-circuit output current |
I(IN) |
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A |
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device enabled into short-circuit |
-40°C ≤ TJ ≤ 125°C |
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0.7 |
1 |
1.3 |
SUPPLY CURRENT (TPS2041B, TPS2051B)
Supply current, low-level output
Supply current, high-level output
Leakage current
Reverse leakage current
No load on OUT, VI(ENx) = 5.5 V, or VI(ENx) = 0 V
No load on OUT, VI(ENx) = 0 V, or VI(ENx) = 5.5 V
OUT connected to ground, VI(ENx) = 5.5 V, or VI(ENx) = 0 V
VI(OUTx) = 5.5 V, IN = ground(2)
SUPPLY CURRENT (TPS2042B, TPS2052B)
TJ = 25°C |
0.5 |
1 |
-40°C ≤ TJ ≤ 125°C |
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µA |
0.5 |
5 |
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TJ = 25°C |
43 |
60 |
-40°C ≤ TJ ≤ 125°C |
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µA |
43 |
70 |
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-40°C ≤ TJ ≤ 125°C |
1 |
µA |
TJ = 25°C |
0 |
µA |
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No load on OUT, VI(ENx) = 5.5 V |
TJ = 25°C |
0.5 |
1 |
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Supply current, low-level output |
-40°C ≤ TJ ≤ 125°C |
0.5 |
µA |
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5 |
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No load on OUT, VI(ENx) = 0 V |
TJ = 25°C |
50 |
70 |
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Supply current, high-level output |
-40°C ≤ TJ ≤ 125°C |
50 |
µA |
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90 |
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Leakage current |
OUT connected to ground, VI(ENx) = 5.5 V |
-40°C ≤ TJ ≤ 125°C |
1 |
µA |
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Reverse leakage current |
V |
I(OUTx) |
= 5.5 V, IN = ground(2) |
T = 25°C |
0.2 |
µA |
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J |
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(1)Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.
(2)Not tested in production, specified by design.
3
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
ELECTRICAL CHARACTERISTICS (continued)
over recommended operating junction temperature range, VI(IN) = 5.5 V, IO = 0.5 A, VI(/ENx) = 0 V (unless otherwise noted)
PARAMETER |
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TEST CONDITIONS(1) |
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MIN TYP |
MAX UNIT |
SUPPLY CURRENT (TPS2043B, TPS2053B) |
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No load on OUT, VI(ENx) = 0 V |
TJ = 25°C |
0.5 |
2 |
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Supply current, low-level output |
-40°C ≤ TJ ≤ 125°C |
0.5 |
µA |
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10 |
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No load on OUT, VI(ENx) = 5.5 V |
TJ = 25°C |
65 |
90 |
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Supply current, high-level output |
-40°C ≤ TJ ≤ 125°C |
65 |
µA |
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110 |
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Leakage current |
OUT connected to ground, VI(ENx) = 0 V |
-40°C≤ TJ ≤ 125°C |
1 |
µA |
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Reverse leakage current |
V |
= 5.5 V, INx = ground(3) |
T = 25°C |
0.2 |
µA |
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I(OUTx) |
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J |
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SUPPLY CURRENT (TPS2044B, TPS2054B)
Supply current, low-level output
Supply current, high-level output
Leakage current
Reverse leakage current
UNDERVOLTAGE LOCKOUT
Low-level input voltage, IN, INx
Hysteresis, IN, INx
OVERCURRENT OC and OCx
Output low voltage, VOL(/OCx)
Off-state current(3)
OC deglitch(3)
THERMAL SHUTDOWN(4)
Thermal shutdown threshold(3)
Recovery from thermal shutdown(3)
Hysteresis(3)
No load on OUT, VI(ENx) = 5.5 V, or VI(ENx) = 0 V
No load on OUT, VI(ENx) = 0 V, or VI(ENx) = 5.5 V
OUT connected to ground, VI(ENx) = 5.5 V, or VI(ENx) = 0 V
VI(OUTx) = 5.5 V, INx = ground(3)
TJ = 25°C
IO(OCx) = 5 mA
VO(OCx) = 5 V or 3.3 V
OCx assertion or deassertion
(3)Not tested in production, specified by design.
(4)The thermal shutdown only reacts under overcurrent conditions.
TJ = 25°C |
0.5 |
2 |
µA |
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-40°C ≤ TJ ≤ 125°C |
0.5 |
10 |
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TJ = 25°C |
75 |
110 |
µA |
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-40°C ≤ TJ ≤ 125°C |
75 |
140 |
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-40°C≤ TJ ≤ 125°C |
1 |
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µA |
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TJ = 25°C |
0.2 |
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µA |
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2 |
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2.5 |
V |
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75 |
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mV |
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0.4 |
V |
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1 |
µA |
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4 |
8 |
15 |
ms |
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135 |
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°C |
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125 |
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°C |
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10 |
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°C |
4
TPS2041B, TPS2042B TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
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SLVS514E – APRIL 2004 – REVISED JANUARY 2006 |
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DEVICE INFORMATION |
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Terminal Functions (TPS2041B and TPS2051B) |
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TERMINAL |
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I/O |
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DESCRIPTION |
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NAME |
TPS2041B |
TPS2051B |
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EN |
4 |
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- |
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I |
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Enable input, logic low turns on power switch |
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EN |
- |
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4 |
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I |
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Enable input, logic high turns on power switch |
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GND |
1 |
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1 |
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Ground |
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IN |
2, 3 |
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2, 3 |
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I |
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Input voltage |
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OC |
5 |
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5 |
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O |
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Overcurrent open-drain output, active-low |
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OUT |
6, 7, 8 |
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6, 7, 8 |
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O |
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Power-switch output |
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Functional Block Diagram (TPS2041B and TPS2051B) |
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CS |
(See Note A) |
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IN |
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OUT |
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Charge |
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Pump |
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Current |
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EN |
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Driver |
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Limit |
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(See Note B) |
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UVLO |
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OC |
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GND |
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Thermal |
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Deglitch |
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Sense |
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Note A: Current sense
Note B: Active low (EN) for TPS2041B; Active high (EN) for TPS2051B
5
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
Terminal Functions (TPS2042B and TPS2052B)
|
TERMINAL |
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I/O |
DESCRIPTION |
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NAME |
TPS2042B |
TPS2052B |
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EN1 |
3 |
- |
I |
Enable input, logic low turns on power switch IN-OUT1 |
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EN2 |
4 |
- |
I |
Enable input, logic low turns on power switch IN-OUT2 |
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EN1 |
- |
3 |
I |
Enable input, logic high turns on power switch IN-OUT1 |
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EN2 |
- |
4 |
I |
Enable input, logic high turns on power switch IN-OUT2 |
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GND |
1 |
1 |
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Ground |
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IN |
2 |
2 |
I |
Input voltage |
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OC1 |
8 |
8 |
O |
Overcurrent, open-drain output, active low, IN-OUT1 |
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OC2 |
5 |
5 |
O |
Overcurrent, open-drain output, active low, IN-OUT2 |
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OUT1 |
7 |
7 |
O |
Power-switch output, IN-OUT1 |
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OUT2 |
6 |
6 |
O |
Power-switch output, IN-OUT2 |
Functional Block Diagram (TPS2042B and TPS2052B)
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OC1 |
GND |
Thermal |
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Deglitch |
Sense |
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EN1 |
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(See Note B) |
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Current |
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Driver |
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Limit |
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Charge |
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Pump |
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(See Note A) |
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CS |
OUT1 |
UVLO |
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(See Note A) |
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IN |
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CS |
OUT2 |
Charge |
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Pump |
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Driver |
Current |
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Limit |
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EN2 |
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OC2 |
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(See Note B) |
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Thermal |
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Deglitch |
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Sense |
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Note A: Current sense |
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Note B: Active low (ENx) for TPS2042B; Active high (ENx) for TPS2052B |
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6
TPS2041B, TPS2042B TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
Terminal Functions (TPS2043B and TPS2053B)
|
TERMINAL |
|
I/O |
DESCRIPTION |
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NAME |
TPS2043B |
TPS2053B |
|||
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EN1 |
3 |
-- |
I |
Enable input, logic low turns on power switch IN1-OUT1 |
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EN2 |
4 |
-- |
I |
Enable input, logic low turns on power switch IN1-OUT2 |
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EN3 |
7 |
-- |
I |
Enable input, logic low turns on power switch IN2-OUT3 |
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EN1 |
-- |
3 |
I |
Enable input, logic high turns on power switch IN1-OUT1 |
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EN2 |
-- |
4 |
I |
Enable input, logic high turns on power switch IN1-OUT2 |
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EN3 |
-- |
7 |
I |
Enable input, logic high turns on power switch IN2-OUT3 |
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GND |
1, 5 |
1, 5 |
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Ground |
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IN1 |
2 |
2 |
I |
Input voltage for OUT1 and OUT2 |
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IN2 |
6 |
6 |
I |
Input voltage for OUT3 |
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NC |
8, 9, 10 |
8, 9, 10 |
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No connection |
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OC1 |
16 |
16 |
O |
Overcurrent, open-drain output, active low, IN1-OUT1 |
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OC2 |
13 |
13 |
O |
Overcurrent, open-drain output, active low, IN1-OUT2 |
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OC3 |
12 |
12 |
O |
Overcurrent, open-drain output, active low, IN2-OUT3 |
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OUT1 |
15 |
15 |
O |
Power-switch output, IN1-OUT1 |
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OUT2 |
14 |
14 |
O |
Power-switch output, IN1-OUT2 |
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OUT3 |
11 |
11 |
O |
Power-switch output, IN2-OUT3 |
7
TPS2041B, TPS2042B |
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TPS2043B, TPS2044B, TPS2051B |
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TPS2052B, TPS2053B, TPS2054B |
|
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www.ti.com |
|
SLVS514E – APRIL 2004 – REVISED JANUARY 2006 |
|
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Functional Block Diagram (TPS2043B and TPS2053B) |
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OC1 |
GND |
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Thermal |
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Sense |
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Deglitch |
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EN1 |
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(See Note B) |
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Current |
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Driver |
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Limit |
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(See Note A) |
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CS |
OUT1 |
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UVLO |
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(See Note A) |
IN1 |
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CS |
OUT2 |
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Driver |
Current |
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Limit |
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EN2 |
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OC2 |
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(See Note B) |
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Thermal |
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Deglitch |
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Sense |
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VCC |
Charge |
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Pump |
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Selector |
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(See Note A) |
IN2 |
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CS |
OUT3 |
EN3 |
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Driver |
Current |
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Limit |
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(See Note B) |
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UVLO |
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OC3 |
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GND |
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Thermal |
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Deglitch |
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Sense |
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Note A: Current sense
Note B: Active low (ENx) for TPS2043B; Active high (ENx) for TPS2053B
8
TPS2041B, TPS2042B TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
Terminal Functions (TPS2044B and TPS2054B)
|
TERMINAL |
|
I/O |
DESCRIPTION |
|
NAME |
TPS2044B |
TPS2054B |
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EN1 |
3 |
- |
I |
Enable input, logic low turns on power switch IN1-OUT1 |
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EN2 |
4 |
- |
I |
Enable input, logic low turns on power switch IN1-OUT2 |
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EN3 |
7 |
- |
I |
Enable input, logic low turns on power switch IN2-OUT3 |
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EN4 |
8 |
- |
I |
Enable input, logic low turns on power switch IN2-OUT4 |
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EN1 |
- |
3 |
I |
Enable input, logic high turns on power switch IN1-OUT1 |
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EN2 |
- |
4 |
I |
Enable input, logic high turns on power switch IN1-OUT2 |
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EN3 |
- |
7 |
I |
Enable input, logic high turns on power switch IN2-OUT3 |
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EN4 |
- |
8 |
I |
Enable input, logic high turns on power switch IN2-OUT4 |
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GND |
1, 5 |
1, 5 |
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Ground |
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IN1 |
2 |
2 |
I |
Input voltage for OUT1 and OUT2 |
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IN2 |
6 |
6 |
I |
Input voltage for OUT3 and OUT4 |
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OC1 |
16 |
16 |
O |
Overcurrent, open-drain output, active low, IN1-OUT1 |
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OC2 |
13 |
13 |
O |
Overcurrent, open-drain output, active low, IN1-OUT2 |
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OC3 |
12 |
12 |
O |
Overcurrent, open-drain output, active low, IN2-OUT3 |
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OC4 |
9 |
9 |
O |
Overcurrent, open-drain output, active low, IN2-OUT4 |
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OUT1 |
15 |
15 |
O |
Power-switch output, IN1-OUT1 |
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OUT2 |
14 |
14 |
O |
Power-switch output, IN1-OUT2 |
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OUT3 |
11 |
11 |
O |
Power-switch output, IN2-OUT3 |
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OUT4 |
10 |
10 |
O |
Power-switch output, IN2-OUT4 |
9
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
Functional Block Diagram (TPS2044B and TPS2054B) |
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OC1 |
GND |
Thermal |
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Deglitch |
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Sense |
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EN1 |
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(See Note B) |
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Current |
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Limit |
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(See Note A) |
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CS |
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OUT1 |
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UVLO |
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Power Switch |
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(See Note A) |
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IN1 |
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CS |
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OUT2 |
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Driver |
Current |
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Limit |
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EN2 |
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OC2 |
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(See Note B) |
Thermal |
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Deglitch |
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Sense |
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VCC |
Charge |
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Selector |
Pump |
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OC3 |
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Thermal |
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Deglitch |
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Sense |
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EN3 |
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(See Note B) |
Driver |
Current |
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Limit |
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(See Note A) |
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CS |
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OUT3 |
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UVLO |
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Power Switch |
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(See Note A) |
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IN2 |
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CS |
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OUT4 |
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Driver |
Current |
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Limit |
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EN4 |
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OC4 |
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(See Note B) |
Thermal |
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Deglitch |
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GND |
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Sense |
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Note A: Current sense
Note B: Active low (ENx) for TPS2044B; Active high (ENx) for TPS2054B
10
TPS2041B, TPS2042B TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
PARAMETER MEASUREMENT INFORMATION
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OUT |
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RL |
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CL |
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VO(OUT) |
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90% |
90% |
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10% |
10% |
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TEST CIRCUIT |
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V |
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50% |
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50% |
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VI(EN) |
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50% |
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I(EN) |
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toff |
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toff |
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VO(OUT) |
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90% |
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10% |
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VO(OUT) |
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90% |
10% |
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VOLTAGE WAVEFORMS |
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Figure 1. Test Circuit and Voltage Waveforms |
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RL = 10 , |
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VI(EN) |
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VI(EN) |
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CL = 1 F |
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I(EN) |
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TA = 25 C |
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I(EN) |
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VO(OUT) |
RL = 10 , |
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2 V/div |
CL = 1 F |
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t − Time − 500 s/div |
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Figure 2. Turnon Delay and Rise Time With 1-µF Load |
Figure 3. Turnoff Delay and Fall Time With 1-µF Load |
11
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
TPS2052B, TPS2053B, TPS2054B
www.ti.com
SLVS514E – APRIL 2004 – REVISED JANUARY 2006
PARAMETER MEASUREMENT INFORMATION (continued)
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RL = 10 , |
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VI(EN) |
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= 100 F |
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VI(EN) |
L |
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= 25 C |
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5 V/div |
A |
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5 V/div |
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VO(OUT) |
RL = 10 , |
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CL = 100 F |
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VO(OUT) |
2 V/div |
TA = 25 C |
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2 V/div |
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t − Time − 500 s/div |
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t − Time − 500 s/div |
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Figure 4. Turnon Delay and Rise Time With 100-µF Load |
Figure 5. Turnoff Delay and Fall Time With 100-µF Load |
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I(EN) |
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5 V/div |
IO(OUT) |
IO(OUT) |
500 mA/div |
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500 mA/div |
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t − Time − 500 s/div
VI = 5 V, |
RL = 10 , |
TA = 25 C |
220 F |
470 F |
100 F |
t − Time − 500 s/div |
Figure 6. Short-Circuit Current, |
Figure 7. Inrush Current With Different |
Device Enabled Into Short |
Load Capacitance |
12