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1994, 2000

BIPOLAR ANALOG INTEGRATED CIRCUIT

μPC1943,1944

ADJUSTABLE PRECISION SHUNT REGULATORS

DATA SHEET

Document No. G10239EJ4V0DS00 (4th edition)

Date Published November 2006 NS CP (N)

Printed in Japan

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DESCRIPTION

The

μPC1943, 1944 are adjustable high precision shunt regulators. 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

• Low voltage operation. VREF

≤ VOUT ≤ 24 V

• High accuracy. VREF = 1.26 V

± 2.4%

• Adjustable output voltage by two external resistors.

• Pin compatible with

μPC1093. (μPC1944)

ORDERING INFORMATION

Part Number

Marking

Marking

μ PC1943T

POWER MINI MOLD (SOT-89) (SC-62)

9B

μ PC1943T-AZ

Note1

POWER MINI MOLD (SOT-89) (SC-62)

9B

μ PC1944T

POWER MINI MOLD (SOT-89) (SC-62)

9C

μ PC1944T-AZ

Note1

POWER MINI MOLD (SOT-89) (SC-62)

9C

μ PC1944J

3PIN PLASTIC SIP (TO-92)

1944

μ PC1944J-A

Note2

3PIN PLASTIC SIP (TO-92)

1944

μ PC1944GR

8PIN PLASTIC SOP (5.72 mm (225))

1944

μ PC1944GR-A

Note2

8PIN PLASTIC SOP (5.72 mm (225))

1944

Notes 1. Pb-free (This product does not contain Pb in the external electrode.)

2. Pb-free (This product does not contain Pb in the external electrode and other parts.)

PIN CONFIGURATIONS (Marking Side)

K

K

K: Cathode

NC

NC

NC

A

REF

K

A

A

REF

REF

REF: Reference

NC

A

A: Anode

NC

NC: No Connection

μPC1944J

μPC1944GR

μPC1943T

μPC1944T

1

1

2

2

3

3

45

6

7

8

K

A

A

REF

1

12

3

2

3

BLOCK DIAGRAM

K

A

REF

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