CS8271
CS8271
Adjustable Micropower Low Dropout
Linear Regulator with ENABLE
Description
The CS8271 is an adjustable microp-
ower voltage regulator with very
low quiescent current (60µA typical
at 100µA load). The output supplies
100mA of load current with a maxi-
mum dropout voltage of only
600mV. Control logic includes
ENABLE . The combination of low
quiescent current, outstanding reg-
ulator performance and control
logic makes the CS8271 ideal for
any battery operated equipment.
The logic level compatible ENABLE
pin allows the user to put the regu-
lator into a shutdown mode where it
draws only 50µA of quiescent cur-
rent.
The regulator is protected against
reverse battery, short circuit, over
voltage, and over temperature con-
ditions. The device can withstand
60V load dump transients making it
suitable for use in automotive envi-
ronments.
The CS8271 is pin compatible with
the National Semiconductor
LM2931.
Features
s
Low Quiescent Current
s
Adjustable Output:
5V to 12V
s
ENABLE for Sleep Mode
Control
s
100mA Output Current
Capability
s
Fault Protection
+60V Load Dump
-15V Reverse Voltage
Short Circuit
Thermal Shutdown
s
Low Reverse Current
(Output to Input)
Block Diagram
V
IN
Current Source
(Circuit Bias)
Over
Voltage
Shutdown
V
OUT
Package Options
8L SOIC & PDIP
Current Limit
Sense
ENABLE
Input
V
OUT
Adj
1
V
IN
NC
NC
ENABLE
Gnd
NC
+
Thermal
Shutdown
-
Error
Amplifier
Adj
Bandgap
Reference
Gnd
Other Packages: Consult factory for
16L SO Batwing, 5L TO-220 and D
2
PAK.
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
Rev. 3/26/97
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
