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TPS7A37_15 Datasheet, PDF (1/26 Pages) Texas Instruments – 1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection
TPS7A37
www.ti.com
SBVS220A – MARCH 2013 – REVISED JULY 2013
1% High-Accuracy, 1-A, Low-Dropout Regulator
with Reverse Current Protection
FEATURES
1
•2 Stable with 1.0 μF or Larger Ceramic Output
Capacitor
• Input Voltage Range: 2.2 V to 5.5 V
• Ultralow Dropout Voltage:
– 200 mV max at 1 A
• Excellent Load Transient Response—Even
with Only 1.0-μF Output Capacitor
• NMOS Topology Delivers Low Reverse
Leakage Current
• Excellent Accuracy:
– 0.23% Nominal Accuracy
– 1% Overall Accuracy Over Line, Load, and
Temperature
• Less Than 20 nA typical IQ in Shutdown Mode
• Thermal Shutdown and Current Limit for Fault
Protection
APPLICATIONS
• Point of Load Regulation for DSPs, FPGAs,
ASICs, and Microprocessors
• Post-Regulation for Switching Supplies
• Portable/Battery-Powered Equipment
DRV PACKAGE(1)
2-mm ´ 2-mm SON
(TOP VIEW)
OUT 1
NR/FB 2
GND 3
6 IN
5 N/C
4 EN
DESCRIPTION
The TPS7A37xx family of linear low-dropout (LDO)
voltage regulators uses an NMOS pass element in a
voltage-follower configuration. This topology is
relatively insensitive to output capacitor value and
ESR, allowing a wide variety of load configurations.
Load transient response is excellent, even with a
small 1.0-μF ceramic output capacitor. The NMOS
topology also allows very low dropout.
The TPS7A37xx family uses an advanced BiCMOS
process to yield high precision while delivering very
low dropout voltages and low ground pin current.
Current consumption, when not enabled, is under 20
nA and ideal for portable applications. These devices
are protected by thermal shutdown and foldback
current limit.
TYPICAL APPLICATION CIRCUITS
Optional
VIN
IN
OUT
VOUT
TPS7A3701
1.0 mF
EN GND FB
OFF
ON
VIN
IN
OUT
TPS7A37xx
EN GND
ON
OFF
VOUT
(1) Power dissipation may limit operating
range. Check Thermal Information table.
1
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated