UPC1945 Datasheet, PDF (1/12 Pages) NEC – ADJUSTABLE PRECISION SHUNT REGULATORS

DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC1945
ADJUSTABLE PRECISION SHUNT REGULATORS
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
µ PC1945TA
5-pin plastic mini-mold
(SC-74A)
µ PC1945TA-E1
5-pin plastic mini-mold
(SC-74A)
µ PC1945TA-E2
5-pin plastic mini-mold
(SC-74A)
Marking
K95
Form of Shipment
–
K95
• Embossed taping
• Pin 1 in wind-in direction
• 3000 units/reel
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.
Document No. G14875EJ2V0DS00 (2nd edition)
Date Published September 2001 NS CP (K)
Printed in Japan
2001