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PDF XL4012 Data sheet ( Hoja de datos )
| Número de pieza | XL4012 | |
| Descripción | 12A 300KHz 32V Buck DC to DC Converter | |
| Fabricantes | Xlsemi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de XL4012 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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12A 300KHz 32V Buck DC to DC Converter
Datasheet
XL4012
Features
Wide 5V to 32V Input Voltage Range
Output Adjustable from 0.8V to 30V
Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
Fixed 300KHz Switching Frequency
12A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Available in TO-220 package
Applications
LCD Monitor and LCD TV
Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
General Description
The XL4012 is a 300 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 12A 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 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.
Figure1. Package Type of XL4012
1 page  
12A 300KHz 32V Buck DC to DC Converter
Datasheet
XL4012
XL4012 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=0.5A to 12A
Vin=15V ,Vout=5V
Iout=12A
Min. Typ. Max. Unit
0.776 0.8 0.824 V
- 93 - %
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
Input operation voltage
Symbol
Vin
Test Condition
Min. Typ. Max. Unit
5 32 V
Quiescent Supply Current
Iq
VFB =Vin
3 5 mA
Oscillator Frequency
Fosc
240 300 360 Khz
Switch Current Limit
IL
VFB =0
14 A
Max. Duty Cycle
DMAX
VFB=0V
100 %
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet XL4012.PDF ] | |
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