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Número de pieza | XL4001 | |
Descripción | 2A 150kHz 40V Buck DC/DC Converter | |
Fabricantes | XLSEMI | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de XL4001 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
No Preview Available ! 2A 150kHz 40V Buck DC/DC Converter With Constant Current Loop
Datasheet
XL4001
Features
Wide 4.5V to 40V Input Voltage Range
Output Adjustable from 1.235V to 37V
Minimum Drop Out 1.5V
Fixed 150kHz Switching Frequency
2A Constant Output Current Capability
Internal Optimize Power Transistor
Excellent line and load regulation
TTL shutdown capability
ON/OFF pin with hysteresis function
With output constant current loop
Built in thermal shutdown function
Built in current limit function
Built in output over voltage protection
SOP8-EP (Exposed PAD) package
General Description
The XL4001 is a 150KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 2A 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. An internal compensation
block is built in to minimize external
component count.
Applications
Car Charger
Battery Charger
LED Constant Current Driver
Figure1. Package Type of XL4001
Rev 1.2
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1
1 page 2A 150kHz 40V Buck DC/DC Converter With Constant Current Loop
Datasheet
XL4001
XL4001 Electrical Characteristics
Ta = 25 ;unless otherwise specified.
Symbol Parameter
Test Condition
System parameters test circuit figure4
VFB
Efficiency
Feedback
Voltage
ŋ
Vin = 8V to 32V, Vout=5V
Iload=0.2A to 2A
Vin=12V ,Vout=5V
Iout=2A
Min. Typ. Max. Unit
1.21 1.235 1.26 V
- 83 - %
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
4.5 40 V
Shutdown Supply Current
Quiescent Supply Current
Oscillator Frequency
ISTBY
Iq
Fosc
VEN=5V
VEN =0V,
VFB =Vin
80 200 uA
2 5 mA
127 150 172 Khz
Switch Current Limit
IL
VFB =0
3A
EN Pin Threshold
VEN
High (Regulator OFF)
Low (Regulator ON)
1.4
0.8
V
Output Saturation Voltage
Constant current sense
Voltage
VCE
VCS
VFB=0V
ISW=2A
1.1 1.4 V
0.140 0.155 0.170 V
Rev 1.2
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5
5 Page |
Páginas | Total 7 Páginas | |
PDF Descargar | [ Datasheet XL4001.PDF ] |
Número de pieza | Descripción | Fabricantes |
XL4001 | 2A 150kHz 40V Buck DC/DC Converter | XLSEMI |
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XL4005 | 5A 300KHz 32V Buck DC to DC Converter | XLSEMI |
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