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
FEATURES
DESCRIPTION
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The LP38690/2-ADJ low dropout CMOS linear
regulators provide 2.5% precision reference voltage,
extremely low dropout voltage (450mV @ 1A load
current, VOUT = 5V) and excellent AC performance
utilizing ultra low ESR ceramic output capacitors.
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Output Voltage Range of 1.25V - 9V
2.5% Adjust Pin Voltage Accuracy (25°C)
Low Dropout Voltage: 450mV @ 1A (typ, 5V
out)
Wide Input Voltage Range (2.7V to 10V)
Precision (Trimmed) Bandgap Reference
Ensured Specs for -40°C to +125°C
1µA Off-State Quiescent Current
Thermal Overload Protection
Foldback Current Limiting
SOT-223 and 6-Lead WSON Packages
Enable Pin (LP38692-ADJ)
The low thermal resistance of the WSON and SOT223 packages allow the full operating current to be
used
even
in
high
ambient
temperature
environments.
The use of a PMOS power transistor means that no
DC base drive current is required to bias it allowing
ground pin current to remain below 100 µA
regardless of load current, input voltage, or operating
temperature.
Dropout Voltage: 450 mV (typ) @ 1A (typ. 5V out).
APPLICATIONS
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Ground Pin Current: 55 µA (typ) at full load.
Hard Disk Drives
Notebook Computers
Battery Powered Devices
Portable Instrumentation
Adjust Pin Voltage: 2.5% (25°C) accuracy.
Typical Application Circuits
VIN
VOUT
VIN
VOUT
LP38690
-ADJ
1 PF *
GND
R1
ADJ
R2
1 PF *
VIN
VOUT
VIN
VEN
VOUT
LP38692
-ADJ
VEN
GND
R1
ADJ
1 PF *
R2
1 PF *
VOUT = VADJ x (1 + R1/R2)
*Minimum value required for stability.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
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necessarily include testing of all parameters.
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