CS8161
CS8161
12V, 5V Low Dropout Dual Regulator
with ENABLE
Description
The CS8161 is a 12V/5V dual out-
put linear regulator. The 12V ± 5%
output sources 400mA and the 5V
±2.0% output sources 200mA.
The on board ENABLE function
controls the regulatorÕs two out-
puts. When the ENABLE pin is
low, the regulator is placed in
SLEEP mode. Both outputs are dis-
abled and the regulator draws only
200nA of quiescent current.
The primary output, V
OUT1
is pro-
tected against overvoltage condi-
tions. Both outputs are protected
against short circuit and thermal
runaway conditions.
The CS8161 is packaged in a 5 lead
TOÐ220 with copper tab. The cop-
per tab can be connected to a heat
sink if necessary. It is also available
in a 16 lead SO wide package.
Features
s
Two regulated outputs
12V ±5.0%; 400mA
5V ±2.0%; 200mA
s
Very low SLEEP mode cur-
rent drain 200nA
s
Fault Protection
Reverse Battery (-15V)
74V Load Dump
-100V Reverse Transient
Short Circuit
Thermal Shutdown
Absolute Maximum Ratings
Input Voltage
Operating Range .....................................................................Ð15V to 26V
Overvoltage Protection.........................................................................74V
Internal Power Dissipation ..................................................Internally Limited
Junction Temperature Range.......................................................Ð40¡C +150¡C
Storage Temperature Range....................................................Ð65¡C to +150¡C
Lead Temperature Soldering
Wave Solder (through hole styles only)..........10 sec. max, 260¡C peak
Reflow (SMD styles only)...........60 sec. max above 183¡C, 230¡C peak
ESD (Human Body Model) ...........................................................................2kV
Package Options
TO-220 5 Lead
Tab (Gnd)
Block Diagram
1
2
3
4
5
V
IN
V
OUT1
Gnd
ENABLE
V
OUT2
V
IN
+
Pre-Regulator
-
Anti-saturation
and
Current Limit
V
OUT
2
1
ENABLE
+
-
16 Lead SO Wide
(internally fused leads)
NC
V
OUT
1
1
Gnd
Gnd
NC
Gnd
Gnd
SENSE
1
V
OUT(2)
NC
NC
V
IN
Gnd
Bandgap
Reference
Over Voltage
Shutdown
+
-
Thermal
Shutdown
Anti-saturation
and
Current Limit
Gnd
Gnd
V
OUT(1)
SENSE
1
ENABLE
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. 4/5/99
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
