LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 17

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

Switching Regulator Control Circuits
CMOS Micropower DC–to–DC Converters
Variable Frequency Micropower DC–to–DC Converter
MC33463H
T A = –30 to +80 C, Case 1213
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 A typical.
voltage reference, an oscillator, a variable frequency modula-
tion (VFM) controller, a driver transistor (Lx), a comparator
and feedback resistive divider.
MC33463H–XXKT1, except that a drive pin (EXT) for an
external transistor is provided.
are ideally suited for battery powered computer, consumer,
MOTOROLA
46
V in
The MC33463 series are micropower step–up switching
The MC33463H–XXKT1 series features a highly accurate
T h e M C 3 3 4 6 3 H – X X LT 1 i s i d e n t i c a l t o t h e
Due to the low bias current specifications, these devices
C in
L
Lx
3
Other voltages from 2.5 V to 7.5 V, in 0.1 V increments are available. Consult factory for information.
MC33463H–30KT1
MC33463H–33KT1
MC33463H–50KT1
MC33463H–30LT1
MC33463H–33LT1
MC33463H–50LT1
V Lx Limitier
MC33463H–XXKT1
Drive
Controller
Oscillator
100 kHz
VFM
Device
D
V ref
1
Gnd
Voltage
Output
3.0
3.3
5.0
3.0
3.3
5.0
ORDERING INFORMATION
Output
2
XX Denotes Output Voltage
(continued)
V O
S it h
Switch
S it h
Switch
C O
Type
D i
Drive
Ext.
Int.
V in
and industrial equipment where an extension of useful bat-
tery life is desirable.
MC33463 Series Features:
Low Quiescent Bias Current of 4.0 A
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
C in
Temperature Range
T
T
T A = –30 to +80 C
T A = –30 to +80 C
ANALOG AND INTERFACE INTEGRATED CIRCUITS
Q
Operating
30
30
L
Rb
Cb
SELECTOR GUIDE & CROSS REFERENCE
80 C
80 C
EXT
3
Controller
Oscillator
100 kHz
Drive
VFM
MC33463H–XXLT1
(Tape/Reel)
Package
SOT–89
SOT–89
(T
(Tape)
(T
(Tape)
D
)
)
V ref
1
Gnd
Output
2
V O
C O