UPC1944 NEC [NEC], UPC1944 Datasheet

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UPC1944

Manufacturer Part Number
UPC1944
Description
ADJUSTABLE PRECISION SHUNT REGULATORS
Manufacturer
NEC [NEC]
Datasheet

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

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UPC1944 Summary of contents

Page 1

ADJUSTABLE PRECISION SHUNT REGULATORS DESCRIPTION The 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 two external resistors. These ICs can ...

Page 2

ABSOLUTE MAXIMUM RATINGS (T Parameter Cathode Voltage Cathode Current Cathode to Anode Reverse Current Reference Voltage Reference Input Current Reference to Anode Reverse Current Total Power Dissipation PC1943T PC1944T PC1944J PC1944GR Operating Ambient Temperature Operating Junction Temperature Storage Temperature Note ...

Page 3

RECOMMENDED OPERATING CONDITIONS Parameter Cathode Voltage Cathode Current Total Power Dissipation PC1943T PC1944T PC1944J PC1944GR Operating Ambient Temperature Operating Junction Temperature Note with 0.7 mm ceramic substrate. Caution The recommended operating range may be exceeded without causing ...

Page 4

TYPICAL CHARACTERISTIC ( 600 PC1944J 500 PC1944GR 400 300 PC1943T, 1944T 200 100 Operating Ambient Temperature - REF ...

Page 5

REF A 4 3.0 2.0 1 Operating Ambient Temperature - ...

Page 6

PACKAGE DRAWINGS POWER MINI MOLD (SOT-89) (Unit: mm) 0.42 0.06 6 4.5 0.1 1.6 0.2 1.5 0.1 0.42±0.06 0.47 1.5 0.06 3.0 0.03 0.41 0.05 Data Sheet G10239EJ3V0DS00 PC1943,1944 ...

Page 7

PLASTIC SOP (5.72 mm (225 NOTE Each lead centerline is located within 0. its true position (T.P.) at maximum material condition. 5 detail of lead end 4 ...

Page 8

PLASTIC SIP (TO-92 NOTE Each lead centerline is located within 0. its true position (T.P.) at maximum material condition Data Sheet G10239EJ3V0DS00 PC1943,1944 U ...

Page 9

RECOMMENDED SOLDERING CONDITIONS When soldering these products, there are highly recommended to observe the conditions as shown below. If other soldering processes are used the soldering is performed under different conditions, please make sure to consult with our ...

Page 10

REMARK OF THE PACKAGE MARK The package marks of the PC1943T and the PC1944T are the symbols as follows. Part Number Mark PC1943T 9B PC1944T 9C REFERENCE DOCUMENTS Semiconductor Device Mounting Technology Manual Semiconductor Selection Guide -Products and Packages- 10 ...

Page 11

Data Sheet G10239EJ3V0DS00 PC1943,1944 11 ...

Page 12

The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. No part of this document may be copied or reproduced in any form or by any ...

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