MC33463 Datasheet, PDF (1/12 Pages) ON Semiconductor – VARIABLE FREQUENCY MICROPOWER DC-to-DC CONVERTER

Order this document by MC33463/D
Advance Information
Variable Frequency
Micropower DC-to-DC
Converter
The MC33463 series are micropower step–up switching voltage
regulators, specifically designed for handheld and laptop applications, to
provide regulated output voltages using a minimum of external parts. A wide
choice of output voltages are available. These devices feature a very low
quiescent bias current of 4.0 µA typical.
The MC33463H–XXKT1 series features a highly accurate voltage
reference, an oscillator, a variable frequency modulation (VFM) controller, a
driver transistor (Lx), a comparator and feedback resistive divider.
The MC33463H–XXLT1 is identical to the MC33463H–XXKT1, except
that a drive pin (EXT) for an external transistor is provided.
Due to the low bias current specifications, these devices are ideally suited
for battery powered computer, consumer, and industrial equipment where an
extension of useful battery life is desirable.
MC33463 Series Features:
• Low Quiescent Bias Current of 4.0 µA
• High Output Voltage Accuracy of ±2.5%
• Low Startup Voltage of 0.9 V at 1.0 mA
• Wide Output Voltage Range of 2.5 V to 7.5 V Available
• High Efficiency of 80% Typical
• Surface Mount Package
ORDERING INFORMATION
Device
Output
Operating
Package
Voltage Type Temperature Range (Tape/Reel)
MC33463H–30KT1
MC33463H–33KT1
MC33463H–50KT1
MC33463H–30LT1
MC33463H–33LT1
MC33463H–50LT1
3.0
Int.
3.3 Switch
5.0
3.0
Ext.
TA = –30° to +80°C
3.3 Switch
5.0
Drive
SOT–89
(Tape)
SOT–89
(Tape)
Other voltages from 2.5 V to 7.5 V, in 0.1 V increments are available. Consult factory for
information.
MC33463
VARIABLE FREQUENCY
MICROPOWER DC–to–DC
CONVERTER
SEMICONDUCTOR
TECHNICAL DATA
TAB
1
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOT–89)
PIN CONNECTIONS
MC33463H–XXKT1
Ground 1
Output 2
Lx 3
(Top View)
Tab
(Tab is connected
to Pin 2)
MC33463H–XXLT1
Ground 1
Output 2
EXT 3
(Top View)
Tab
(Tab is connected
to Pin 2)
This document contains information on a new product. Specifications and information herein
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© Motorola, Inc. 1996
Rev 0
1