MC33466 Datasheet, PDF (1/12 Pages) ON Semiconductor – FIXED FREQUENCY PWM MICROPOWER DC-to-DC CONVERTER

Order this document by MC33466/D
Fixed Frequency PWM
Micropower DC-to-DC
Converter
The MC33466 series are micropower 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 15 µA typical.
The MC33466H–XXJT1 series features a highly accurate voltage
reference, an oscillator, a pulse width modulation (PWM) controller, a driver
transistor (Lx), an error amplifier and feedback resistive divider.
The MC33466H–XXLT1 is identical to the MC33466H–XXJT1, 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.
MC33466 Series Features:
• Low Quiescent Bias Current of 15 µA
• High Output Voltage Accuracy of ±2.5%
• Low Startup Voltage of 0.9 V at 1.0 mA
• Soft–Start = 500 µs
• Surface Mount Package
ORDERING INFORMATION
Device
Output
Operating
Package
Voltage Type Temperature Range (Tape/Reel)
MC33466H–30JT1
MC33466H–33JT1
MC33466H–50JT1
MC33466H–30LT1
MC33466H–33LT1
MC33466H–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.
MC33466
FIXED FREQUENCY PWM
MICROPOWER DC–to–DC
CONVERTER
SEMICONDUCTOR
TECHNICAL DATA
TAB
1
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOT–89)
PIN CONNECTIONS
MC33466H–XXJT1
Ground 1
Output 2
Lx 3
(Top View)
Tab
(Tab is connected
to Pin 2)
MC33466H–XXLT1
Ground 1
Output 2
EXT 3
(Top View)
Tab
(Tab is connected
to Pin 2)
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1999
Rev 4, 08/1999
1