CS8164
CS8164
8V/5V Low Dropout Dual Regulator
with ENABLE
Description
Features
The CS8164 is a low dropout, dual
8V/5V linear regulator. The secondary
5V/100mA output is used for powering
systems with standby memory.
Quiescent current drain is less than
2mA when supplying 10mA loads from
the standby regulator.
In automotive applications, the CS8164
and all regulated circuits are protected
from reverse battery installations, as
well as high voltage transients. During
line transients, such as a 60V load
dump, the 750mA output will automat-
ically shutdown to protect both internal
circuits and the load, while the sec-
ondary regulator continues to power
any standby load.
The on board ENABLE function con-
trols the regulator's primary output.
When ENABLE is in the low state, the
regulator is placed in STANDBY mode
where it draws 2mA (typ) quiescent
current.
The CS8164 is packaged in a 5-lead
TO-220, with copper tab for connection
to a heat sink, if necessary.
s
Two Regulated Outputs
Primary Output
8V ±5%; 750mA
Secondary Output
5V ±2%; 100mA
s
Low Dropout Voltage
s
ON/OFF Control
Option
s
Standby Quiescent Drain
(<2mA)
s
Protection Features
Reverse Battery
60V Peak Transient
Voltage
-50V Reverse Transient
Short Circuit
Thermal Shutdown
Absolute Maximum Ratings
DC Input Voltage .............................................................................-0.5V to 26V
Transient Peak Voltage (46V Load Dump) .................................................60V
Internal Power Dissipation ..................................................Internally Limited
Operating Temperature Range................................................-40¡C to +125¡C
Junction Temperature Range...................................................-40¡C to +150¡C
Storage Temperature Range ....................................................-65¡C to +150¡C
Reverse Polarity V
OUT1
Input Voltage, DC ................................................-18V
Reverse Polarity Input Voltage, Transient ................................................-50V
Lead Temperature Soldering
Wave Solder (through hole styles only)..........10 sec. max, 260¡C peak
Block Diagram
Package Options
5 Lead TO-220
Tab (Gnd)
Standby Output
V
IN
+
-
Bandgap
Reference
Primary Output
Thermal
Shutdown
Over Voltage
Shutdown
V
OUT1
Output
Current
Limit
V
OUT2
ENABLE
+
-
Gnd
+
-
Output
Current
Limit
1
1
2
3
4
5
V
IN
V
OUT1
Gnd
ENABLE
V
OUT2
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. 2/17/98
1
A
¨
Company
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
