TPS737XX Datasheet, PDF (1/18 Pages) Texas Instruments – 1A Low-Dropout Regulator with Reverse Current Protection

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TPS737xx
www.ti.com
SBVS067C – JANUARY 2006 – REVISED AUGUST 2006
1A Low-Dropout Regulator
with Reverse Current Protection
FEATURES
• Stable with 1.0µF or Larger Ceramic Output
Capacitor
• Input Voltage Range: 2.2V to 5.5V
• Ultra-Low Dropout Voltage: 130mV typ at 1A
• Excellent Load Transient Response—Even
With Only 1.0µF Output Capacitor
• NMOS Topology Delivers Low Reverse
Leakage Current
• 0.5% Initial Accuracy
• 3% Overall Accuracy Over Line, Load, and
Temperature
• Less Than 20nA typical I_Q in Shutdown Mode
• Thermal Shutdown and Current Limit for
Fault Protection
• Available in Multiple Output Voltage Versions
– Adjustable Output: 1.20V to 5.5V
– Custom Outputs Available Using Factory
Package-Level Programming
APPLICATIONS
• Point of Load Regulation for DSPs, FPGAs,
ASICs, and Microprocessors
• Post-Regulation for Switching Supplies
• Portable/Battery-Powered Equipment
Optional
V_IN
IN
OUT
TPS737xx
EN GND FB
V_OUT
1.0mF
DESCRIPTION
The TPS737xx 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 1.0µF ceramic output capacitor. The NMOS
topology also allows very low dropout for the die size
used.
The TPS737xx 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
1µA and ideal for portable applications. These
devices are protected by thermal shutdown and
foldback current limit.
DCQ PACKAGE
SOT223
(TOP VIEW)
TAB IS GND
1 2345
Typical Application Circuit
IN GND EN
OUT FB/NC
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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 © 2006, Texas Instruments Incorporated