LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 18

• Manufacturer Part Number: LinearVoltageRegulators
• Description: Analog And Interface Integratedcircuits Selector Guide & Cross Reference
• Manufacturer: Motorola Semiconductor Products

CMOS Micropower DC–to–DC Converters
Fixed Frequency PWM Micropower DC–to–DC Converter
MC33466H
T A = –30 to +80 C, Case 1213
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 A typical.
voltage reference, an oscillator, a pulse width modulation
(PWM) controller, a driver transistor (Lx), an error amplifier
and feedback resistive divider.
MC33466H–XXJT1, except that a drive pin (EXT) for an
external transistor is provided.
V in
ANALOG AND INTERFACE INTEGRATED CIRCUITS
SELECTOR GUIDE & CROSS REFERENCE
C in
The MC33466 series are micropower switching voltage
The MC33466H–XXJT1 series features a highly accurate
T h e M C 3 3 4 6 6 H – X X LT 1 i s i d e n t i c a l t o t h e
L
Lx
3
Other voltages from 2.5 V to 7.5 V, in 0.1 V increments are available. Consult factory for information.
MC33466H–30JT1
MC33466H–33JT1
MC33466H–50JT1
MC33466H–30LT1
MC33466H–33LT1
MC33466H–50LT1
V Lx Limiter
Drive
Controller
Oscillator
50 kHz
PWM
MC33466H–XXJT1
Device
Soft–Start
Phase
Comp
D
V ref
1
Voltage
Gnd
Output
3.0
3.3
5.0
3.0
3.3
5.0
ORDERING INFORMATION
Output
(Voltage
Feedback)
2
XX Denotes Output Voltage
S it h
Switch
S it h
Switch
Type
D i
Drive
C O
V O
Ext.
Int.
(continued)
V in
C in
are ideally suited for battery powered computer, consumer,
and industrial equipment where an extension of useful bat-
tery life is desirable.
MC33466 Series Features:
Low Quiescent Bias Current of 15 A
High Output Voltage Accuracy of 2.5%
Low Startup Voltage of 0.9 V at 1.0 mA
Soft–Start = 500 s
Surface Mount Package
Q
Due to the low bias current specifications, these devices
Temperature Range
T
T
T A = –30 to +80 C
T A = –30 to +80 C
L
Operating
Rb
Cb
30
30
EXT
3
80 C
80 C
Drive
Controller
Oscillator
50 kHz
PWM
MC33466H–XXLT1
(Tape/Reel)
Package
SOT–89
SOT–89
Soft–Start
(T
(Tape)
(T
(Tape)
Phase
Comp
D
)
)
V ref
1
MOTOROLA
Gnd
Output
(Voltage
Feedback)
2
47
C O
V O