TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS241 – MARCH 2000
D
1.5-A Low-Dropout Voltage Regulator
D
Available in 1.5-V, 1.8-V, 2.5-V, 3.3-V, Fixed
Output and Adjustable Versions
D
Open Drain Power-Good (PG) Status
Output (TPS751xxQ)
D
Open Drain Power-On Reset With 100-ms
Delay (TPS753xxQ)
D
Dropout Voltage Typically 160 mV at 1.5 A
(TPS75133Q)
D
Ultra Low 75 µA Typical Quiescent Current
D
Fast Transient Response
D
2% Tolerance Over Specified Conditions
For Fixed-Output Versions
D
20-Pin TSSOP (PWP) PowerP AD Package
D
Thermal Shutdown Protection
GND/HEATSINK
NC
IN
IN
EN
PG or RESET
†
FB/SENSE
OUTPUT
OUTPUT
GND/HEATSINK
NC – No internal connection
†
PG is on the TPS751xx and RESET
PWP PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
is on the TPS753xx
20
19
18
17
16
15
14
13
12
11
GND/HEATSIN
NC
NC
GND
NC
NC
NC
NC
NC
GND/HEATSIN
description
The TPS753xxQ and TPS751xxQ are low dropout regulators with integrated power-on reset and power-good
(PG) functions respectively. These devices are capable of supplying 1.5 A of output current with a dropout of
160 mV (TPS75133Q, TPS75333Q). Quiescent current is 75 µA at full load and drops down to 1 µA when the
device is disabled. TPS751xxQ and TPS753xxQ are designed to have fast transient response for larger load
current changes.
TPS75x33Q
DROPOUT VOLTAGE
TPS75x15Q
IL=1.5 A
CL=100 µF (T antalum)
VO=1.5 V
300
250
200
150
vs
JUNCTION TEMPERATURE
IO = 1.5 A
50
– Change in∆
O
–50
V
Output Voltage – mV
–100
LOAD TRANSIENT RESPONSE
0
100
– Dropout Voltage – mV
DO
V
50
0
–401011060
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.
PowerPAD is a trademark of Texas Instruments.
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.
IO = 0.5 A
TJ – Junction Temperature – °C
–150
1.5
O
0
160
I – Output Current – A
032145768910
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
t – Time – ms
Copyright 2000, Texas Instruments Incorporated
1
TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
T
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS241 – MARCH 2000
description (continued)
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 160 mV
at an output current of 1.5 A for the TPS75x33Q) and is directly proportional to the output current. Additionally ,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent
of output loading (typically 75 µA over the full range of output current, 1 mA to 1.5 A). These two key
specifications yield a significant improvement in operating life for battery-powered systems.
The device is enabled when EN
is connected to a low level voltage. This LDO family also features a sleep mode;
applying a TTL high signal to EN (enable) shuts down the regulator , reducing the quiescent current to less than
1 µA at TJ = 25°C.
For the TPS751xxQ, the power-good terminal (PG) is an active high, open drain output, which can be used to
implement a power-on reset or a low-battery indicator.
The RESET (SVS, POR, or power on reset) output of the TPS753xxQ initiates a reset in microcomputer and
microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS753xxQ
monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.
When the output reaches 95% of its regulated voltage, RESET goes to a high-impedance state after a 100-ms
delay . RESET
goes to a logic-low state when the regulated output voltage is pulled below 95% (i.e., over load
condition) of its regulated voltage.
The TPS751xxQ or TPS753xxQ is offered in 1.5-V, 1.8-V, 2.5-V and 3.3-V fixed-voltage versions and in an
adjustable version (programmable over the range of 1.5 V to 5 V). Output voltage tolerance is specified as a
maximum of 2% over line, load, and temperature ranges. The TPS751xxQ and TPS753xxQ families are
available in 20-pin TSSOP (PWP) packages.
AVAILABLE OPTIONS
J
–40°C to 125°C
NOTE: The TPS75x01 is programmable using an external resistor divider (see application
information). The PWP package is available taped and reeled. Add an R suffix to the
device type (e.g., TPS75201QPWPR) to indicate tape and reel.
OUTPUT VOLTAGE
(TYP)
3.3 VTPS75133QPWPTPS75333QPWP
2.5 VTPS75125QPWPTPS75325QPWP
1.8 VTPS75118QPWPTPS75318QPWP
1.5 VTPS75115QPWPTPS75315QPWP
Adjustable 1.5 V to 5 VTPS75101QPWPTPS75301QPWP
TSSOP (PWP)
PGRESET
V
I
0.22 µF
†
See application information section for capacitor selection details.
TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
functional block diagram—adjustable version
IN
EN
_
SLVS241 – MARCH 2000
PG or RESET
+
V
= 1.1834 V
ref
+
_
GND
100 ms Delay
(for RESET
Option)
functional block diagram—fixed-voltage version
IN
EN
_
+
V
= 1.1834 V
ref
+
_
100 ms Delay
(for RESET
Option)
OUT
R1
FB
R2
External to the device
PG or RESET
OUT
SENSE
R1
GND
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
R2
3
TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
I/O
DESCRIPTION
I/O
DESCRIPTION
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS241 – MARCH 2000
Terminal Functions (TPS751xxQ)
TERMINAL
NAMENO.
EN5IEnable Input
FB/SENSE7IFeedback input voltage for adjustable device (sense input for fixed options)
GND17Regulator Ground
GND/HEATSINK1, 10, 11, 20Ground/heatsink
IN3, 4IInput voltage
NC2, 12, 13, 14,
15, 16, 18, 19
OUTPUT8, 9ORegulated output voltage
PG6OPower good output
TERMINAL
NAMENO.
EN5IEnable Input
FB/SENSE7IFeedback input voltage for adjustable device (sense input for fixed options)
GND17Regulator Ground
GND/HEATSINK1, 10, 11, 20Ground/heatsink
IN3, 4IInput voltage
NC2, 12, 13, 14,
15, 16, 18, 19
OUTPUT8, 9ORegulated output voltage
RESET6OReset output
No connection
Terminal Functions (TPS753xxQ)
No connection
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
TPS753xxQ RESET timing diagram
V
I
SLVS241 – MARCH 2000
V
(see Note A)
NOTES: A. V
res
Threshold
Voltage
Output
Undefined
B. VIT –Trip voltage is typically 5% lower than the output voltage (95%VO) V
V
O
RESET
Output
is the minimum input voltage for a valid RESET. The symbol V
res
standards for semiconductor symbology.
V
(see Note B)
IT+
V
IT–
100 ms
Delay
(see Note B)
V
IT+
Less than 5% of the
output voltage
(see Note B)
100 ms
Delay
res
V
res
t
V
IT–
IT–
to V
is the hysteresis voltage.
IT+
t
Output
Undefined
t
(see Note B)
is not currently listed within EIA or JEDEC
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS241 – MARCH 2000
TPS751xxQ PG timing diagram
V
I
V
(see Note A)
NOTES: A. VPG is the minimum input voltage for a valid PG. The symbol VPG is not currently listed within EIA or JEDEC standards for
B. VIT –Trip voltage is typically 17% lower than the output voltage (83%VO) V
PG
V
O
Threshold
Voltage
PG
Output
Output
Undefined
semiconductor symbology .
V
(see Note B)
IT+
V
(see Note B)
IT–
V
(see Note B)
IT+
V
(see Note B)
IT–
to V
IT–
is the hysteresis voltage.
IT+
V
PG
t
t
Output
Undefined
t
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PWP
§
PWP
¶
TPS75101Q, TPS75115Q, TPS75118Q, TPS75125Q, TPS75133Q WITH POWER GOOD
TPS75301Q, TPS75315Q, TPS75318Q, TPS75325Q, TPS75333Q WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS241 – MARCH 2000
absolute maximum ratings over operating junction temperature range
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.
‡
All voltage values are with respect to network terminal ground.
PACKAGE
§
This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 5-in × 5-in PCB, 1 oz. copper,
2-in × 2-in coverage (4 in2).
¶
This parameter is measured with the recommended copper heat sink pattern on a 8-layer PCB, 1.5-in × 2-in PCB, 1 oz. copper
with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in2) and layers 3 and 6 at 100% coverage (6 in2). For more information, refer
to TI technical brief SLMA002.