CS8391 Datasheet, PDF (1/6 Pages) Cherry Semiconductor Corporation – 5V/250mA, 5V/100mA Micropower Low Dropout Regulator with ENABLE

CS8391
5V/250mA, 5V/100mA Micropower
Low Dropout Regulator with ENABLE
Description
Features
The CS8391 is a precision, dual 5V
micropower linear voltage regula-
tor. The switched primary output
(V_OUT1) supplies up to 250mA
while the secondary (V_OUT2) is
capable of supplying 100mA. Both
outputs have a maximum dropout
voltage of 600mV and low reverse
current. Quiescent current drain is
typically 150µA when supplying
100µA from each output.
The ENABLE input provides logic
level control of the primary output.
With the primary output disabled,
quiescent current drain is typically
100µA when supplying 100µA from
the secondary output.
The CS8391 is extremely robust
with protection provided for
reverse battery, short circuit, and
overtemperature on both outputs.
The CS8391 is available in a 5-lead
D²PAK.
Absolute Maximum Ratings
Input Voltage.....................................................................................-15V to 45V
Power Dissipation .................................................................Internally Limited
Operating Temperature Range................................................-40¡C to +125¡C
Maximum Junction Temperature ...........................................-40¡C to +150¡C
Storage Temperature Range ....................................................-55¡C to +150¡C
Electrostatic Discharge (Human Body Model) ..........................................4kV
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
Block Diagram
s 5V, 250mA Primary Output
s 5V, 100mA Secondary
Output
s 3% Tolerance, Both
Outputs
s ON/OFF Control for
Primary Output
s Low Quiescent Current
Drain (100µA V_OUT2)
s Low Reverse Current
s Protection Features
Reverse Battery (-15V)
Short Circuit
Overtemperature
Package Options
5 Lead D²PAK
Tab (Gnd)
VIN
ENABLE
Bandgap
Reference
Thermal
Shutdown
Primary Output
Current
Limit
VOUT1
*
VOUT1Sense
+
-
*Note: Internally
connected on 5 leaded
package.
Secondary Output
VOUT2
*
Current
Limit
VOUT2Sense
+
-
1. V_IN
1
2. V_OUT1
3. Gnd
4. V_OUT2
5. ENABLE
Gnd
Consult factory for 8L and 16L SO, 8L and
16L PDIP, 7L D²PAK and 5L TO-220.
Rev. 1/12/98
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