The TPS201xA family of power distribution switches is intended for applications where heavy capacitive loads
and short circuits are likely to be encountered. These devices are 50-mΩ N-channel MOSFET high-side power
switches. The switch is controlled by a logic enable compatible with 5-V logic and 3-V logic. 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 TPS201xA limits the output
current to a safe level by switching into a constant-current mode. 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 the switch remains off until valid input voltage is
present.
The TPS201xA devices differ only in short-circuit current threshold. The TPS2010A limits at 0.3-A load, the
TPS201 1 at 0.9-A load, the TPS2012A at 1.5-A load, and the TPS2013A at 2.2-A load (see Available Options).
The TPS201xA is available in an 8-pin small-outline integrated-circuit (SOIC) package and in a 14-pin
thin-shrink small-outline package (TSSOP) and operates over a junction temperature range of –40°C to 125°C.
GENERAL SWITCH CATALOG
33 mΩ, single
80 mΩ, single
TPS201xA
TPS202x
TPS203x
TPS2014
TPS2015
TPS2041
TPS2051
TPS2045
TPS2055
0.2 A – 2 A
0.2 A – 2 A
0.2 A – 2 A
600 mA
1 A
500 mA
500 mA
250 mA
250 mA
80 mΩ, dual
IN1
IN2
260 mΩ
1.3 Ω
OUT
TPS2042
TPS2052
TPS2046
TPS2056
TPS2100/1
IN1 500 mA
IN2 10 mA
TPS2102/3/4/5
IN1 500 mA
IN2 100 mA
500 mA
500 mA
250 mA
250 mA
80 mΩ, triple
TPS2043
TPS2053
TPS2047
TPS2057
500 mA
500 mA
250 mA
250 mA
80 mΩ, quad
TPS2044
TPS2054
TPS2048
TPS2058
500 mA
500 mA
250 mA
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1998, Texas Instruments Incorporated
1
TPS2010A, TPS2011A, TPS2012A, TPS2013A
MAXIMUM CONTINUOUS
40°C to 85°C
Active lo
POWER-DISTRIBUTION SWITCHES
SLVS189A – DECEMBER 1998 – REVISED NOVEMBER 1999
AVAILABLE OPTIONS
RECOMMENDED
T
A
°
–
†
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2010DR)
‡
The PWP package is only available left-end taped-and-reeled.
EN47IEnable input. Logic low turns on power switch.
GND11IGround
IN2, 32–6IInput voltage
OUT5, 6, 7, 88–14OPower-switch output
NO.
D
NO.
PWP
I/ODESCRIPTION
Current
Limit
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
detailed description
power switch
TPS2010A, TPS2011A, TPS2012A, TPS2013A
POWER-DISTRIBUTION SWITCHES
SLVS189A – DECEMBER 1998 – REVISED NOVEMBER 1999
The power switch is an N-channel MOSFET with a maximum on-state resistance of 50 mΩ (V
Configured as a high-side switch, the power switch prevents current flow from OUT to IN and IN to OUT when
disabled.
charge pump
An internal charge pump supplies power to the driver circuit and provides the necessary voltage to pull the gate
of the MOSFET above the source. The charge pump operates from input voltages as low as 2.7 V and requires
very little supply current.
driver
The driver controls the gate voltage of the power switch. T o limit large current surges and reduce the associated
electromagnetic interference (EMI) produced, the driver incorporates circuitry that controls the rise times and
fall times of the output voltage. The rise and fall times are typically in the 2-ms to 9-ms range.
enable (EN
current sense
)
The logic enable disables the power switch, the bias for the charge pump, driver, and other circuitry to reduce
the supply current to less than 10 µA when a logic high is present on EN . A logic zero input on EN restores bias
to the drive and control circuits and turns the power on. The enable input is compatible with both TTL and CMOS
logic levels.
A sense FET monitors the current supplied to the load. The sense FET measures current more efficiently than
conventional resistance methods. When an overload or short circuit is encountered, the current-sense circuitry
sends a control signal to the driver. The driver, in turn, reduces the gate voltage and drives the power FET into
its saturation region, which switches the output into a constant current mode and holds the current constant
while varying the voltage on the load.
I(IN)
= 5 V).
thermal sense
An internal thermal-sense circuit shuts off the power switch when the junction temperature rises to
approximately 140°C. Hysteresis is built into the thermal sense circuit. After the device has cooled
approximately 20°C, the switch turns back on. The switch continues to cycle off and on until the fault is removed.
undervoltage lockout
A voltage sense circuit monitors the input voltage. When the input voltage is below approximately 2 V , a control
signal turns off the power switch.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
TPS2010A, TPS2011A, TPS2012A, TPS2013A
Input voltage
Continuous output current, I
A
POWER-DISTRIBUTION SWITCHES
SLVS189A – DECEMBER 1998 – REVISED NOVEMBER 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage range, V
Output voltage range, V
Input voltage range, V
Continuous output current, I
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.
Turnon Delay and Rise TIme2
Turnoff Delay and Fall Time3
Turnon Delay and Rise TIme with 1-µF Load4
Turnoff Delay and Rise TIme with 1-µF Load5
Device Enabled into Short6
TPS2010A, TPS201 1A, TPS2012A, and TPS2013A, Ramped Load on Enabled Device7, 8, 9, 10
TPS2013A, Inrush Current11
7.9-Ω Load Connected to an Enabled TPS2010A Device12
3.7-Ω Load Connected to an Enabled TPS2010A Device13
3.7-Ω Load Connected to an Enabled TPS2011A Device14
2.6-Ω Load Connected to an Enabled TPS2011A Device15
2.6-Ω Load Connected to an Enabled TPS2012A Device16
1.2-Ω Load Connected to an Enabled TPS2012A Device17
1.2-Ω Load Connected to an Enabled TPS2013A Device18
0.9-Ω Load Connected to an Enabled TPS2013A Device19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
7
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