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XC9201 Datasheet(PDF) 1 Page - Torex Semiconductor

Part No. XC9201
Description  PWM Controlled Step-Down DC/DC Converters
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Maker  TOREX [Torex Semiconductor]
Homepage  http://www.torex.co.jp
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XC9201 Datasheet(HTML) 1 Page - Torex Semiconductor

 
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PWM Controlled Step-Down DC/DC Converters
Series
535
5
The XC9201 series are step-up multiple current and voltage feedback
DC/DC controller ICs. Current sense, clock frequencies and amp
feedback gain can all be externally regulated.
A stable power supply is possible with output currents of up to 3.0A.With
output voltage fixed internally, VOUT is selectable in 0.1V steps within a
1.2V - 16.0V range (± 2.5%).
For output voltages outside this range, we recommend the FB version
which has a 0.9V internal reference voltage. Using this version, the
required output voltage can be set-up using 2 external resistors.
Switching frequencies can also be set-up externally within a range of
100~600 kHz and therefore frequencies suited to your particular
application can be selected.
With the current sense function, peak currents (which flow through the
driver transistor and the coil) can be controlled. Soft-start time can be
adjusted using external resistors and capacitors.
During shutdown (CE pin =L), consumption current can be reduced to as
little as 0.5
µA (TYP.) or less and with U.V.L.O
(Under Voltage Lock Out) built-in, the external transistor will be
automatically shut off below the regulated voltage.
■General Description
GStable Operations via Current & Voltage Multiple Feedback
GUnlimited Options for Peripheral Selection
GCurrent Protection Circuit
GCeramic Capacitor Compatible
GMobile, Cordless phones
GPalm top computers, PDAs
GPortable games
GCameras, Digital cameras
GLaptops
■Features
■Applications
NInput Voltage Range
: 2.5V ~20V
NOutput Voltage Range
: 1.2V ~ 16V
NOscillation Frequency Range : 100kHz ~
600kHz
NOutput Current
: up to 3.0A
NCeramic Capacitor Compatible
NMSOP-8A Package
0
20
40
60
80
100
0.1
1
10
100
1000
10000
Output Current:IOUT(mA)
7.2V
15.0V
VIN=5.4V
10.0V
12.0V
22μH
10KΩ
220pF
CLK 5
1 EXT
2 Isen
3 VIN
4 CE/SS
VOUT 7
GAIN 6
Vss 8
470pF
40μF+220μF
33mΩ
XP132A11A1SR
U3FWJ44N
1μF
240kΩ
0.33μF
94μF
■Typical Application Circuit
■Typical Performance
Characteristic
VOUT:5.0V FOSC:330kHz
05S_1XC9201/9202新規 02.09.12 15:16 ページ 535


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