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UPC1933 Datasheet(Fiches technique) 1 Page - NEC

Numéro de pièce UPC1933
Description  DC-DC CONVERTER CONTROL IC
Télécharger  5 Pages
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Fabricant  NEC [NEC]
Site Internet  http://www.nec.com/
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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.
1998
BiCMOS INTEGRATED CIRCUIT
µµµµ PC1933
DC-DC CONVERTER CONTROL IC
DATA SHEET
Document No. G13690EJ3V0DS00 (3rd edition)
Date Published April 2000 NS CP (K)
Printed in Japan
The mark 5 shows major revised points.
DESCRIPTION
The
µ PC1933 is an IC that controls a low-voltage input DC-DC converter. This IC is suitable for an operation with3-V,
3.3-V input or a lithium ion secondary battery input, because the minimum operating supply voltage is 2.5 V.
Because of its wide operating voltage range, it can also be used to control DC-DC converters that use 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)
• Timer latch circuit for short-circuit protection.
• Ceramic capacitor with low capacitance (0.1
µ F) can be used for short-circuit protection.
• Open drain output (1 cannel: This output can be used to control a step-down converter, a step-up converter.)
• Dead time is internally fixed to 85 %.
• Soft start function (with a circuit to convert the timer latch circuit.)
ORDERING INFORMATION
Part Number
Package
µ PC1933GR
8-pin plastic SOP (5.72 mm (225))




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