TPS7A37 Datasheet, PDF (1/24 Pages) Texas Instruments – 1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection

TPS7A37
www.ti.com
1% High-Accuracy, 1-A, Low-Dropout Regulator
with Reverse Current Protection
SBVS220 – MARCH 2013
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 I_Q 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
V_IN
IN
OUT
V_OUT
TPS7A3701
1.0 mF
EN GND FB
OFF
ON
V_IN
IN
OUT
TPS7A37xx
EN GND
ON
OFF
V_OUT
(1) Power dissipation may limit operating
range. Check Thermal Information table.
1
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2
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
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