Datasheet
LP38692
-ADJ
V
IN
V
OUT
GND
1 PF *
1 PF *
V
OUT
V
IN
R1
R2
V
EN
V
EN
ADJ
LP38690
-ADJ
V
IN
V
OUT
GND
1 PF *
1 PF *
V
OUT
V
IN
R1
R2
ADJ
LP38690-ADJ, LP38692-ADJ
www.ti.com
SNVS323H –DECEMBER 2004–REVISED APRIL 2013
LP38690-ADJ
LP38692-ADJ 1A Low Dropout CMOS Linear Regulators with Adjustable Output
Stable with Ceramic Output Capacitors
Check for Samples: LP38690-ADJ, LP38692-ADJ
1
FEATURES
DESCRIPTION
The LP38690/2-ADJ low dropout CMOS linear
2
• Output Voltage Range of 1.25V - 9V
regulators provide 2.5% precision reference voltage,
• 2.5% Adjust Pin Voltage Accuracy (25°C)
extremely low dropout voltage (450mV @ 1A load
• Low Dropout Voltage: 450mV @ 1A (typ, 5V
current, V
OUT
= 5V) and excellent AC performance
out)
utilizing ultra low ESR ceramic output capacitors.
• Wide Input Voltage Range (2.7V to 10V)
The low thermal resistance of the WSON and SOT-
223 packages allow the full operating current to be
• Precision (Trimmed) Bandgap Reference
used even in high ambient temperature
• Ensured Specs for -40°C to +125°C
environments.
• 1µA Off-State Quiescent Current
The use of a PMOS power transistor means that no
• Thermal Overload Protection
DC base drive current is required to bias it allowing
• Foldback Current Limiting
ground pin current to remain below 100 µA
regardless of load current, input voltage, or operating
• SOT-223 and 6-Lead WSON Packages
temperature.
• Enable Pin (LP38692-ADJ)
Dropout Voltage: 450 mV (typ) @ 1A (typ. 5V out).
APPLICATIONS
Ground Pin Current: 55 µA (typ) at full load.
• Hard Disk Drives
Adjust Pin Voltage: 2.5% (25°C) accuracy.
• Notebook Computers
• Battery Powered Devices
• Portable Instrumentation
Typical Application Circuits
V
OUT
= V
ADJ
x (1 + R1/R2)
*Minimum value required for stability.
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.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.