ADJUSTABLE PRECISION SHUNT REGULATORS

DATA SHEET

µµµµPC1945

2001

Document No.

G14875EJ2V0DS00 (2nd edition)

Date Published September 2001 NS CP (K)

Printed in Japan

BIPOLAR ANALOG INTEGRATED CIRCUIT

DESCRIPTION

The

µ PC1945 is an adjustable-shunt regulator featuring a high-precision internal reference voltage. The separate

power supply pin (VCC pin) allows the cathode voltage to be dropped to as low as 0.4V, making this product ideal for

error amplifiers that use a low voltage (minimum 1.8 V) output switching regulator.

Support for high-density mounting is also provided through the use of a 5-pin plastic mini-mold package.

FEATURES

• Separate cathode and power supply pins

• Suitable for low voltage (minimum 1.8 V) output switching regulator

Cathode voltage range: 0.4 V to 5 V

Power supply voltage range: VREF to 5 V

Reference voltage: 1.26 V

• 5-pin plastic mini-mold package

Mold dimensions: 2.9 mm(L)×1.5 mm(W)×1.1 mm(H)

ORDERING INFORMATION

Part Number

Package

Marking

Form of Shipment

µ PC1945TA

5-pin plastic mini-mold

(SC-74A)

K95

–

µ PC1945TA-E1

5-pin plastic mini-mold

(SC-74A)

K95

• Embossed taping

• Pin 1 in wind-in direction

• 3000 units/reel

µ PC1945TA-E2

5-pin plastic mini-mold

(SC-74A)

K95

• Embossed taping

• Pin 1 in pull-out direction

• 3000 units/reel

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.