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PDF XL4003 Data sheet ( Hoja de datos )
| Número de pieza | XL4003 | |
| Descripción | 4A 300KHz 32V Buck DC to DC Converter | |
| Fabricantes | XLSEMI | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de XL4003 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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4A 300KHz 32V Buck DC to DC Converter
Datasheet
XL4003
Features
n Wide 5V to 32V Input Voltage Range
n Output Adjustable from 0.8V to 30V
n Maximum Duty Cycle 100%
n Minimum Drop Out 0.6V
n Fixed 300KHz Switching Frequency
n 4A Constant Output Current Capability
n Internal Optimize Power MOSFET
n High efficiency
n Excellent line and load regulation
n TTL shutdown capability
n EN pin with hysteresis function
n Built in thermal shutdown function
n Built in current limit function
n Built in output short protection function
n Available in TO-252 package
Applications
n LCD Monitor and LCD TV
n Digital Photo Frame
n Set-up Box
n ADSL Modem
n Telecom / Networking Equipment
General Description
The XL4003 is a 300KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 4A load with high
efficiency, low ripple and excellent line and
load regulation. Requiring a minimum
number of external components, the regulator
is simple to use and include internal
frequency compensation and a
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
is built inside. When short protection function
happens, the operation frequency will be
reduced from 300KHz to 60KHz. An internal
compensation block is built in to minimize
external component count.
Rev 2.3
Figure1. Package Type of XL4003
1
1 page  
4A 300KHz 32V Buck DC to DC Converter
Datasheet
XL4003
XL4003 Electrical Characteristics
Ta = 25℃;unless otherwise specified.
Symbol Parameter
Test Condition
System parameters test circuit figure4
VFB
Efficiency
Feedback
Voltage
ŋ
Vin = 7V to 32V, Vout=5V
Iload=0.3A to 4A
Vin=12V ,Vout=5V
Iout=4A
Min. Typ. Max. Unit
0.776 0.8 0.824 V
- 90 - %
Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=500mA, Ta =
25℃; the others floating unless otherwise specified.
Parameters
Symbol
Test Condition
Min. Typ. Max. Unit
Input operation voltage
Vin
5 32 V
Shutdown Supply Current
Quiescent Supply Current
Oscillator Frequency
ISTBY
Iq
Fosc
VEN=0V
VEN =2V,
VFB =Vin
60 200 uA
3 5 mA
240 300 360 Khz
Switch Current Limit
IL
VFB =0
6A
EN Pin Threshold
High (Regulator ON)
VEN Low (Regulator OFF)
1.4
0.8
V
EN Pin Input Leakage
Current
Max. Duty Cycle
IH
IL
DMAX
VEN =2V (ON)
VEN =0V (OFF)
VFB=0V
1 15 uA
1 15 uA
100 %
Rev 2.3
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet XL4003.PDF ] | |
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