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UPC1944T Datasheet

  • UPC1944T

  • ADJUSTABLE PRECISION SHUNT REGULATORS

  • 12頁

  • NEC   NEC

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DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
碌
PC1943,1944
ADJUSTABLE PRECISION SHUNT REGULATORS
DESCRIPTION
The
碌
PC1943,1944 are adjustable precision shunt regulators with guaranteed thermal stability. The output voltage can
be set to any value between reference voltage (1.26 V) and 24 V by two external resistors.
These ICs can apply to error amplifier of switching regulators.
FEATURES
鈥?Low voltage operation and High accuracy.
鈥?Adjustable output voltage by two external resistors.
鈥?Pin compatible to
碌
PC1093.
V
REF
= 1.26 V
鹵
2.4 %
V
REF
鈮?/div>
V
OUT
鈮?/div>
24 V
ORDERING INFORMATION
Part Number
Package
Power mini mold (SOT-89)
Power mini mold (SOT-89)
3-pin plastic SIP (TO-92)
8-pin plastic SOP (5.72 mm (225))
BLOCK DIAGRAM
K
碌
PC1943T
碌
PC1944T
碌
PC1944J
碌
PC1944GR
REF
A
PIN CONFIGURATION (Marking Side)
Power mini mold (SOT-89)
碌
PC1943T
碌
PC1944T
A
A
3-pin plastic SIP (TO-92)
碌
PC1944J
3-pin plastic SOP (5.72 mm (225))
碌
PC1944GR
K 1
NC 2
8 REF
7 NC
6 A
5 NC
1
1
REF
2
A
3
K
1
K
2
A
3
REF
2
3
NC 3
NC 4
REF A
K
A: Anode
K: Cathode
REF: Reference
NC: No Connection
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. G10239EJ3V0DS00 (3rd edition)
(Previous No. IC-3454)
Date Published March 2000 NS CP (K)
Printed in Japan
The mark
shows major revised points.
漏
1994, 2000

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