CS403 Datasheet, PDF (1/6 Pages) Cherry Semiconductor Corporation – 5V, 750mA Linear Regulator with RESET

CS403
5V, 750mA Linear Regulator
with RESET
Description
Features
The CS403 is a linear regulator spe-
cially designed as a post regulator.
The CS403 provides low noise, low
drift, and high accuracy to
improve the performance of a
switching power supply. It is ideal
for applications requiring a highly
efficient and accurate linear regu-
lator. The active RESET makes the
device particularly well suited to
supply microprocessor based sys-
tems. The PNP-NPN output stage
assures a low dropout voltage
without requiring excessive supply
current. Its features include low
dropout (1V typically) and low
supply drain (4mA typical with
I_OUT = 500mA).
The CS403 design optimizes sup-
ply rejection by switching the
internal reference from the supply
input to the regulator output as
soon as the nominal output voltage
is reached.
s 5V ±5% Output Voltage
s Low Drift
s High Efficiency
s Short Circuit Protection
s Active Delayed Reset
s Noise Immunity on Reset
s 750mA Output Current
Absolute Maximum Ratings
Forward Input Voltage ..................................................................................18V
Operating Junction Temperature, T_J..............................................-40 to 150ûC
Storage Temperature........................................................................-55 to 150ûC
Lead Temperature Soldering
Wave Solder (through hole styles only)..........10 sec. max, 260¡C peak
Block Diagram
Package Options
V_IN
Start
RESET
REF
TO V_OUT
Output
Current
Limit
+
- _{Error Amp}
Low Voltage
INHIBIT
Comparator
I_CHARGE
SCR
Latch
Delay
Comparator
V_CMP
V_OUT
Delay
Gnd
5 Lead TO-220
Tab (Gnd)
1. V_IN
2. RESET
3. Gnd
4. Delay
5. V_OUT
1
Rev. 2/18/98
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: [phone] Fax: [phone]
Email: [e-mail]
Web Site: www.cherry-semi.com
1
A
¨ Company