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XC9267 Datasheet Preview

XC9267 Datasheet

36V Operation 0.6A Synchronous Step-Down DC/DC Converters

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XC9267 Series
36V Operation 0.6A Synchronous Step-Down DC/DC Converters
ETR05054-001a
GENERAL DESCRIPTION
The XC9267 series are 36V operation synchronous step-down DC/DC converter ICs with a built-in P-channel MOS driver transistor
and N-channel MOS switching transistor.
The XC9267 series has operating voltage range of 3.0V36.0V and high-efficiency power supply up to an output current of 0.6A.
Low ESR capacitors such as ceramic capacitors can be used for the load capacitor (CL).
A 0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 25.0V using
external resistors (RFB1, RFB2).
1.2MHz or 2.2MHz can be selected for the switching frequency.
The soft-start time is internally set to 2.0ms (TYP.), but can be adjusted to set a longer time using an external resistor and capacitor.
With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 2.7V or lower.
The output state can be monitored using the power good function.
Internal protection circuits include over current protection, short-circuit protection, and thermal shutdown circuits to enable safe use.
APPLICATIONS
Electric Meter
Gas Detector
Various Sensor
Industrial Equipment
Home appliance
FEATURES
Input Voltage Range
Output Voltage Range
FB Voltage
Oscillation Frequency
Output Current
Control Methods
:
:
:
:
:
Soft-start Time
Protection Circuits
:
:
:
Low ESR Ceramic Capacitor
Packages
Environmentally Friendly
:
:
:
336V(Absolute Max 40V)
1.025V
0.75V±1.5%
1.2MHz2.2MHz
0.6A
PWM control
Efficiency88%@12V5V300mA
Adjustable by RC
Over Current Protection
Thermal Shutdown
Short-circuit Protection
Ceramic Capacitor
SOT-89-5 (Without Power Good)
USP-6C (With Power Good)
EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT
CIN
2.2μF
VIN Lx
EN/SS
FB
GN D
PG
L
CFB
RFB1
CL
RPG RFB2 10μF×2
TYPICAL PERFORMANCE
CHARACTERISTICS
XC9267B75Cxx
(VIN=12V, VOUT=5V, fOSC=1.2MHz)
L=6.8μH(CLF5030NIT-6R8), CIN=4.7μF×2(C2012X6S1H475K)
CL=10μF×2 (C3216X7R1E106K)
100
90
80
70
60
50
40
30
20
10
0
0.1 1 10 100 1000
Output Current :IOUT[mA]
1/28




Torex

XC9267 Datasheet Preview

XC9267 Datasheet

36V Operation 0.6A Synchronous Step-Down DC/DC Converters

No Preview Available !

XC9267 Series
BLOCK DIAGRAM
XC9267 Series
Diodes inside the circuit are an ESD protection diodes and a parasitic diodes.
2/28


Part Number XC9267
Description 36V Operation 0.6A Synchronous Step-Down DC/DC Converters
Maker Torex
Total Page 28 Pages
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