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MC33463 Datasheet, PDF (1/12 Pages) ON Semiconductor – VARIABLE FREQUENCY MICROPOWER DC-to-DC CONVERTER | |||
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Order this document by MC33463/D
Variable Frequency
Micropower DC-to-DC
Converter
The MC33463 series are micropower stepâup 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 MC33463HâXXKT1 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 MC33463HâXXLT1 is identical to the MC33463HâXXKT1, 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)
MC33463Hâ30KT1
MC33463Hâ33KT1
MC33463Hâ50KT1
MC33463Hâ30LT1
MC33463Hâ33LT1
MC33463Hâ50LT1
3.0
Int.
3.3 Switch
5.0
3.0
Ext.
TA = â30° to +80°C
3.3 Switch
5.0
Drive
SOTâ89
(Tape)
SOTâ89
(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 DCâtoâDC
CONVERTER
SEMICONDUCTOR
TECHNICAL DATA
TAB
1
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOTâ89)
PIN CONNECTIONS
MC33463HâXXKT1
Ground 1
Output 2
Lx 3
(Top View)
Tab
(Tab is connected
to Pin 2)
MC33463HâXXLT1
Ground 1
Output 2
EXT 3
(Top View)
Tab
(Tab is connected
to Pin 2)
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1999
Rev 1
1
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