CS8391 Cherry Semiconductor Corporation, CS8391 Datasheet

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CS8391

Manufacturer Part Number
CS8391
Description
5V/250mA/ 5V/100mA Micropower Low Dropout Regulator with ENABLE
Manufacturer
Cherry Semiconductor Corporation
Datasheet
Rev. 1/12/98
The CS8391 is a precision, dual 5V
micropower linear voltage regula-
tor. The switched primary output
(V
while the secondary (V
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
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
OUT1
Low Dropout Regulator with ENABLE
ENABLE
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
) supplies up to 250mA
Gnd
V
5V/250mA, 5V/100mA Micropower
IN
+
-
OUT2
Absolute Maximum Ratings
Reference
Shutdown
Bandgap
Thermal
Description
) is
Block Diagram
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
D
+
-
+
2
-
PAK.
Primary Output
CS8391
Secondary Output
Current
Limit
Current
Limit
1
*
*
*
connected on 5 leaded
package.
V
V
Note: Internally
V
V
OUT 1
OUT 1
OUT 2
OUT 2
Sense
Sense
2000 South County Trail, East Greenwich, RI 02818
Consult factory for 8L and 16L SO, 8L and
16L PDIP, 7L D
Tel: (401)885-3600 Fax: (401)885-5786
Cherry Semiconductor Corporation
Web Site: www.cherry-semi.com
5V, 250mA Primary Output
5V, 100mA Secondary
Output
3% Tolerance, Both
Outputs
ON/OFF Control for
Primary Output
Low Quiescent Current
Drain (100µA V
Low Reverse Current
Protection Features
Email: info@cherry-semi.com
Package Options
Reverse Battery (-15V)
Short Circuit
Overtemperature
5 Lead D
Features
Tab (Gnd)
2
1
PAK and 5L TO-220.
A
2
PAK
1. V
2. V
3. Gnd
4. V
5. ENABLE
OUT2
IN
OUT1
OUT2
¨
)
Company

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CS8391 Summary of contents

Page 1

... 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 2 D PAK. Primary Output V OUT 1 * ...

Page 2

Electrical Characteristics: 6V ² V ² 26V PARAMETER Primary Output Stage (V ) OUT1 Output Voltage, V OUT1 Dropout Voltage Line Regulation Load Regulation Quiescent Current Ripple Rejection Current Limit Short Circuit Current Limit Reverse Current Secondary Output ...

Page 3

PACKAGE LEAD # LEAD SYMBOL 2 5 Lead D PAK Current Limit Peak current that can be delivered to the output. Dropout Voltage The input-output voltage differential at which the circuit ceases to regulate against ...

Page 4

... General The CS8391 is a micropower dual 5V regulator. All bias required to operate the internal circuitry is derived from the standby output this output experiences an OUT2 over current situation and collapses, then V collapse (see timing diagrams). If there is critical circuitry that must remain active under most conditions it should be connected to V cuitry that is likely to be subjected to a short circuit, e ...

Page 5

... V BATT 22mF ESR<8W Load * C1 required if regulator is located far from power supply filter and C3 required for stability. Capacitor must operate at minimum temperature expected during system operations. Test & Application Circuit OUT CS8391 V OUT ENABLE Gnd 22mF mP ESR<8W ...

Page 6

... PACKAGE DIMENSIONS IN MM(INCHES) 8.53 (.336) 8.28 (.326) 15.75 (.620) 14.73 (.580) 1.70 (.067) REF 4.57 (.180) 4.31 (.170) Ordering Information Part Number Description CS8391YDP5 5 Lead D CS8391YDPR5 5 Lead D Rev. 1/12/98 Package Specification Thermal Data R QJC R QJA * Depending on thermal properties of substrate Lead D PAK (DP) 10.31 (.406) 10.05 (.396) 1.40 (.055) 1.14 (.045) 1.68 (.066) 1.40 (.055) 0.91 (.036) ...

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