LP38693MP-ADJ+ National Semiconductor, LP38693MP-ADJ+ Datasheet
LP38693MP-ADJ+
Manufacturer Part Number
LP38693MP-ADJ+
Description
Manufacturer
National Semiconductor
Datasheet
1.LP38693MP-ADJ.pdf
(13 pages)
Specifications of LP38693MP-ADJ+
Notes
NEW
Date_code
10+
© 2005 National Semiconductor Corporation
LP38691-ADJ/LP38693-ADJ
500mA Low Dropout CMOS Linear Regulators with
Adjustable Output
Stable with Ceramic Output Capacitors
General Description
The LP38691/3-ADJ low dropout CMOS linear regulators
provide 2.0% precision reference voltage, extremely low
dropout voltage (250mV
and excellent AC performance utilizing ultra low ESR ce-
ramic output capacitors.
The low thermal resistance of the LLP and SOT-223 pack-
ages 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: 250 mV (typ)
Ground Pin Current: 55 µA (typ) at full load.
Adjust Pin Voltage: 2.0% (25˚C) accuracy.
Typical Application Circuits
Note: *Minimum value required for stability.
@
500mA load current, V
@
500mA (typ. 5V out).
DS201268
V
OUT
OUT
= V
= 5V)
ADJ
x (1 + R1/R2)
Features
n Output voltage range of 1.25V - 9V
n 2.0% adjust pin voltage accuracy (25˚C)
n Low dropout voltage: 250mV
n Wide input voltage range (2.7V to 10V)
n Precision (trimmed) bandgap reference
n Guaranteed specs for -40˚C to +125˚C
n 1µA off-state quiescent current
n Thermal overload protection
n Foldback current limiting
n SOT-223 and 6-Lead LLP packages
n Enable pin (LP38693-ADJ)
Applications
n Hard Disk Drives
n Notebook Computers
n Battery Powered Devices
n Portable Instrumentation
20126801
20126802
@
500mA (typ, 5V out)
September 2005
www.national.com
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