UPC1935 Datasheet, PDF (1/28 Pages) NEC – DC-DC CONVERTER CONTROL IC

DATA SHEET
BiCMOS INTEGRATED CIRCUIT
µ ^PC1935
DC-DC CONVERTER CONTROL IC
DESCRIPTION
The µ PC1935 is a low-voltage input DC-DC converter control IC that can configure a three-output (step-up × 2, inverted
output × 1) DC-DC converter at an input voltage of 3, 3.3, or 5 V.
Because of its wide operating voltage range, this IC can also be used to control DC-DC converters using an AC adapter
for input.
FEATURES
• Low supply voltage: 2.5 V (MIN.)
• Operating voltage range: 2.5 to 20 V (breakdown voltage: 30 V)
• Can control three output channels.
• Timer latch circuit for short-circuit protection.
• Ceramic capacitor with low capacitance (0.1 µ F) can be used for short-circuit protection.
• Dead times of channels 2 (step-up) and 3 (inverted output) can be set from external resistors. Dead time of channel 1
(step-up) is internally fixed to 85 %.
• Soft start of each channel can be set independently.
• Each channel can be turned ON/OFF independently.
ORDERING INFORMATION
Part Number
Package
µ PC1935GR
16-pin plastic TSSOP (5.72 mm (225))
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. G13418EJ3V0DS00 (3rd edition)
Date Published March 2000 NS CP (K)
Printed in Japan
The mark 5 shows major revised points.
1998