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XC9263 데이터시트 PDF




Torex Semiconductor에서 제조한 전자 부품 XC9263은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 XC9263 기능
기능 18V Operation 0.5A Synchronous Step-Down DC/DC Converters
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XC9263 데이터시트, 핀배열, 회로
XC9263/XC9264 Series
ETR05047-001
18V Operation 0.5A Synchronous Step-Down DC/DC Converters
GENERAL DESCRIPTION
The XC9263/64 series are 18V operation synchronous step-down DC/DC converter ICs with a built-in high-side / low-side driver
transistor. The XC9263/64 series has operating voltage range of 3.0V18.0V and it can support 0.5A as an output current with
high-efficiency. Compatible with Low ESR capacitors such as ceramic capacitors for the load capacitor (CL).
0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 15.0V using
external resistors (RFB1, RFB2).
500kHz or 1.2MHz or 2.2MHz can be selected for the switching frequency. In PWM/PFM automatic switchover control, IC can
change the control method between PWM and PFM based on the output current requirement and as a result IC can achieve high
efficiency over the full load range.
XC9263/64 has a fixed internal soft start time which is 1.0ms (TYP.), additionally the time can be extended by using an external
resistor and capacitor.
With the built-in UVLO function, the driver transistor is forced OFF when input voltage goes down to 2.7V or lower.
The output state can be monitored using the power good function.
Over current protection, short-circuit protection and thermal shutdown are embedded and they secure a safety operation.
APPLICATIONS
Hot water supply system
Recorders, Camcorders
Refrigerators, Air-conditioners
Low Power Systems
FEATURES
Input Voltage Range
FB Voltage
Oscillation Frequency
Output Current
Control Methods
:
:
:
:
:
Soft-start Time
Protection Circuits
:
:
Low ESR Ceramic Capacitor :
Package
:
Environmentally Friendly
:
318VAbsolute Max 20V
0.75V±1.5%
500kHz, 1.2MHz, 2.2MHz
0.5A
PWM/PFM Auto
Efficiency 85%@12V5V, 1mA
PWM control
Adjustable by RC
Over Current Protection
Automatic Recovery
(XC9263B/XC9264B)
Integral Latch Method
(XC9263A/XC9264A)
Thermal Shutdown
Ceramic Capacitor
SOT-25 (no Power good)
USP-6C
EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT
L
VIN Lx
CIN RFB1
CFB
EN/SS
FB
RPG
RFB2
CL
GN D
PG
TYPICAL PERFORMANCE
CHARACTERISTICS
XC9264x75C
(VIN=12V, VOUT=5V, fOSC=1200kHz)
L=4.7μH(CLF6045NIT-4R7), CIN=2.2μF(GRM188R61H225KE11),
CL=10μF×2 (GRM188R61E106MA73)
100
90
80
70
60
50
40
30
20
XC9264x75C
10
0
0.1 1 10 100
Output Current :IOUT[mA]
1/30




XC9263 pdf, 반도체, 판매, 대치품
XC9263/XC9264 Series
PIN CONFIGURATION
Lx FB
54
VIN 6
EN/SS 5
PG 4
1 Lx
2 GND
3 FB
12 3
VIN GND EN/SS
SOT-25
(TOP VIEW)
USP-6C
(BOTTOM VIEW)
* The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so
as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected
to the GND (No. 2) pin.
PIN ASSIGNMENT
PIN NUMBER
SOT-25
USP-6C
16
35
-4
43
22
51
PIN NAME
VIN
EN/SS
PG
FB
GND
Lx
FUNCTION
Power Input
Enable Soft-start
Power good Output
Output Voltage Sense
Ground
Switching Output
FUNCTION CHART
PIN NAME SIGNAL
STATUS
L Stand-by
EN/SS
H
Active
OPEN
Undefined State(*1)
(*1) Please do not leave the EN/SS pin open. Each should have a certain voltage.
4/30

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XC9263 전자부품, 판매, 대치품
ELECTRICAL CHARACTERISTICS (Continued)
XC9263/XC9264
PARAMETER
FB ‘H’ Current
FB ‘L’ Current
EN/SS ‘H’ Current
EN/SS ‘L’ Current
EN/SS ‘H’ Voltage
EN/SS ‘L’ Voltage
Thermal Shutdown
Temperature
SYMBOL
IFBH
IFBL
IEN/SSH
IEN/SSL
VEN/SSH
VEN/SSL
TTSD
CONDITIONS
VIN=VEN/SS=18VVFB=3.0V
VIN=VEN/SS=18VVFB=0V
VIN=VEN/SS=18VVFB=0.825V
VIN=18VVEN/SS=0VVFB=0.825V
VEN/SS=0.3V2.5VVFB=0.71V
VEN/SS Voltage when Lx pin voltage changes from
"L" level to "H"
VEN/SS=2.5V0.3VVFB=0.71V
VEN/SS Voltage when Lx pin voltage changes from
"H" level to "L"
Junction Temperature
Hysteresis Width
THYS
Junction Temperature
Test Condition: Unless otherwise stated, VIN=12V, VEN/SS=12V
XC9263/XC9264
Series
Ta=25
MIN TYP MAX UNIT CIRCUIT
-0.1
-
0.1 μA
-0.1
-
0.1 μA
-
0.1 0.3 μA
-0.1
-
0.1 μA
2.5 - 18 V
- - 0.3 V
- 150 -
- 25 -
-
-
7/30

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