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PDF XL3001 Data sheet ( Hoja de datos )
| Número de pieza | XL3001 | |
| Descripción | 3A 220KHz 40V Buck LED Constant Current Driver | |
| Fabricantes | XLSEMI | |
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3A 220KHz 40V Buck LED Constant Current Driver
Datasheet
XL3001
Features
n Wide 8V to 40V Input Voltage Range
n Output Current Sence Voltage is 0.21V
n Maximum Duty Cycle 100%
n Minimum Drop Out 0.3V
n Fixed 220KHz Switching Frequency
n 3A Constant Output Current Capability
n Internal Optimize Power MOSFET
n High efficiency
n Excellent line and load regulation
n Built in thermal shutdown function
n Built in current limit function
n Built in output short protection function
n Available in SOP8-EP package
Applications
n Buck constant current driver
n Monitor LED Backlighting
n General purpose LED lighting
General Description
The XL3001 is a 220 KHz fixed frequency
PWM buck (step-down) LED constant current
driver, capable of driving a 3A 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
220KHz to 60KHz. An internal compensation
block is built in to minimize external
component count.
Rev 1.2
Figure1. Package Type of XL3001
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1
1 page  
3A 220KHz 40V Buck LED Constant Current Driver
Datasheet
XL3001
XL3001 Electrical Characteristics
Ta = 25℃;unless otherwise specified.
Symbol Parameter
Test Condition
System parameters test circuit figure4
VCS
Current
Sense
Voltage
Vin = 8V to 40V, Vout=6.4V
Iload=0.1A to 2A
ŋ Efficiency
Vin=12V ,Vout=10V
Iout=0.3A
ŋ Efficiency
Vin=24V ,Vout=16V
Iout=0.6A
ŋ Efficiency
Vin=36V ,Vout=19V
Iout=0.6A
Min. Typ. Max. Unit
203.7 210 216.3 mV
- 95 - %
- 96 - %
- 95 - %
Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 100uf/50V capacitor; Iout=500mA, Ta =
25℃; the others floating unless otherwise specified.
Parameters
Symbol Test Condition Min. Typ. Max. Unit
Input operation voltage
Vin
8 40 V
VIN UVLO
Vin_uvlo
5V
VIN OVP
Vin_ovp
45 V
Quiescent Supply Current
Iq
VCS=Vin
2.1 5
mA
Oscillator Frequency
Fosc
187 220 253 KHz
Output Short Frequency
Fosp
48 60 72 KHz
Switch Current Limit
IL VCS=0
3.5 A
Max. Duty Cycle
Output Power PMOS
DMAX
Rdson
VCS=0V
VCS=0V, Vin=12V,
ISW=3A
100 %
75 100 mohm
Rev 1.2
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5
5 Page 
3A 220KHz 40V Buck LED Constant Current Driver
Datasheet
XL3001
Typical System Application (PWM DIMMING)
PWM dimming function can be used in typical system application with external components.
Changing the duty cycle of PWM signal can get different LED current. The PWM signal high
voltage above 3.3V(referenced to ground, lower than VIN), Low voltage below 0.2V(referenced
to ground).
L1 100uH/3A
VIN 4
5,6 SW
CC XL3001
D1
B540C
105
C2 COUT
R1 105 220uF/35V
VIN
CIN
C1
VC 3 7,8 1 CS
2K
100uF/50V 105
GND
D2
1N4148
RCS
PWM IOUT=0.21V/RCS
Figure18. XL3001 System Parameters Test Circuit (PWM DIMMING)
Typical System Application (LED OVP)
LED OVP function can be used in typical system application with external components. The
output voltage can be limited in a suitable value by choose different zener diode when the output
LED open. the zener diode voltage choosed by output led voltage's 1.3 times.
Rev 1.2
Figure19. XL3001 System Parameters Test Circuit (LED OVP)
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11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet XL3001.PDF ] | |
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