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UPC2251H Datasheet

  • UPC2251H

  • Analog IC

  • 73.35KB

  • 12頁

  • ETC

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DATA SHEET
DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
碌
PC2250 SERIES
LOW-SATURATED STABILIZED POWER SUPPLY WITH SYSTEM RESET PIN
DESCRIPTION
The
碌PC2250
series is a collection of low-saturated 4-pin stabilized power supplies with a pin that outputs a reset
signal when a drop in the input voltage is detected.
Because the reverse leakage current of these power supplies is about 1
碌A
even if a voltage is applied to the
output pin when the input voltage is cut off, these power supplies are ideal for systems with on-board
microprocessors requiring battery backup.
FEATURES
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Low minimum voltage difference between input and output
V
DIF
= 0.15 V TYP. (at I
O
= 40 mA)
Outputs reset signal (active-low) when the input voltage or
output voltage drops.
Low reverse leakage current during back up
I
OLK
= 1
碌A
TYP.
Low circuit operating current under no load
I
BIAS
= 1.3 mA TYP.
PIN CONFIGURATION (Marking Side)
4-pin plastic SIP (TO-126)
碌PC2251H,
2253H, 2255H
1: INPUT
1 2
3 4
2: RESET
3: GND
4: OUTPUT
ORDERING INFORMATION
Part Number
Package
4-pin plastic SIP (TO-126)
4-pin plastic SIP (TO-126)
4-pin plastic SIP (TO-126)
Output Voltage
3V
5 V (TYPE1)
5 V (TYPE2)
碌PC2251H
碌PC2253H
碌PC2255H
BLOCK DIAGRAM
INPUT
Overcurrent
limiter circuit
OUTPUT
Starter
circuit
Reference
voltage circuit
Error
amplifier
circuit
RESET
Reset circuit
GND
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. G14451EJ2V0DS00 (2nd edition)
Date Published December 1999 N CP(K)
Printed in Japan
漏
1999

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