LM2931 Datasheet, PDF (1/2 Pages) National Semiconductor (TI) – Series Low Dropout Regulators

0.1A LOW DROPOUT VOLTAGE REGULATORS
LM2931
Features
- 3-Terminal regulators
- 0.1A output within 2% over temperature
- Very low quiescent current
- Low dropout voltage (300mv Type)
- Extermely tight load and line regulation
- Very low temperature coefficent
- Current and thermal limiting
- Unregulated DC input canwithstand -20V
revers battery and +60V positive
transients
Applications
- High-efficiency linear regulator
- Battery powerd system
- Portable/Palm top/Notebook
computer
- Portable consumer equipment
- Portable Instrumentation
- Avionics
- Automotive Electronics
- SMPS Post-Regulator
TO-92
1. Vout 2. Gnd 3. Vin
1
ORDERING INFORMATION
DEVICE
PKG
LM2931L-XX
TO-92
(XX= Output Voltage=3.3, 5.0, 8.0, 8.5 9.0
10.0, 12.0,15.0V, Adjustable=AD )
PRODUCT DESCRIPTION
The LM2931 is a low power voltage regulator. This device excellent choice for use in battery powered.
Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life.
The LM2931 features very low quiescent current (100㎂ Typ.) and very low drop output voltage
(Typ. 60㎷ at light load and 300㎷ at 100㎃).
This includes a tight initial tolerance of 0.5% Typ., extremely good load and line regulation of 0.05% Typ.,
and very low output temperature coefficient.
The LM2931 fixed-voltage and andjustable regulators is offered in 3-pin TO-92 package compatible with
other fixed regulator.
BLOCK DIAGRAM AND TYPICAL APPLICATIONS
UNREGULATED DC
INPUT
+
-_-
+_1.23V
REFERENCE
ERROR
AMPLIFIER
60KΩ
1
OUTPUT
GROUND
V_OUT
100㎃
+
MAX
3.3㎌
HTC