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PDF ( 数据手册 , 数据表 ) XL8002

零件编号 XL8002
描述 80V 1A High Efficiency Buck PFM LED Constant Current Driver
制造商 XLSEMI
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XL8002 数据手册, 描述, 功能
XLSEMI
Preliminary Datasheet
80V 1A High Efficiency Buck PFM LED Constant Current Driver
XL8002
Features
n Operation Voltage DC 12V~80V.
n 0.1V current sense voltage reference.
n Directly drive 1~18 Series 1W/3W LED.
n Excellent line and load regulation.
n Internal Optimize Power HV-MOSFET.
n Built in Thermal Shutdown Function.
n Built in Current Limiting Function.
n Built in Soft-Start Circuit.
n Available in TO263-5L package.
n Up to 98% efficiency.
General Description
The XL8002 is a monolithic high voltage
switching regulator with PFM that is
specifically designed to operate from a
12V~80V DC power supply.
The XL8002 is a high efficiency LED driver
switching regulator. The LED string is driven
at DC constant current rather than constant
voltage, thus providing constant light output
and enhanced reliability.
Applications
n LED Lighting & LED LAMP
n General purpose LED lighting
Figure1. Package Type of XL8002
Rev 1.0
www.xlsemi.com
1
Free Datasheet http://www.Datasheet4U.com







XL8002 pdf, 数据表
XLSEMI
Preliminary Datasheet
80V 1A High Efficiency Buck PFM LED Constant Current Driver
XL8002
Table1: Figure7 Input VIN=60V/72V/80V system parameters table:
LED
String
VIN=60V
VIN=72V
1W*N FOSC Pout Efficiency FOSC Pout Efficiency
1 27.54K 1.04W 78.7% 25.41K 0.97W 78.9%
2 45.90K 1.99W 87.4% 45.76K 2.02W 87.4%
3 61.79K 2.94W 90.7% 61.10K 2.89W 89.2%
4 74.70K 3.83W 92.4% 75.13K 3.79W 90.6%
5 85.92K 4.75W 93.1% 87.70K 4.70W 91.8%
6 94.64K 5.63W 93.8% 98.50K 5.61W 93.7%
7 101.06K 6.48W 94.8% 107.44K 6.45W 93.2%
8 105.65K 7.36W 95.1% 114.66K 7.37W 94.0%
9 108.26K 8.21W 95.7% 120.15K 8.24W 94.6%
10 109.06K 9.10W 96.0% 124.10K 9.13W 95.3%
11 107.72K 10.01W 96.5% 126.54K 10.12W 95.6%
12 104.57K 10.91W 97.2% 126.90K 10.97W 95.9%
13 98.61K 11.92W 97.5% 125.62K 11.92W 96.2%
14 88.21K 12.92W 97.4% 122.06K 12.94W 96.6%
15 74.63K 13.87W 98.4% 116.52K 13.94W 97.2%
16 46.44K 15.62W 98.6% 99.20K 15.77W 97.7%
17 89.37K 16.69W 97.8%
18 75.17K 17.64W 97.9%
FOSC
28.84K
46.98K
63.69K
78.04K
91.51K
103.35K
113.48K
121.91K
129.09K
134.73K
138.71K
141.32K
142.28K
141.32K
137.62K
121.04K
113.56K
103.65K
VIN=80V
Pout
1.14W
2.09W
3.04W
3.92W
4.85W
5.78W
6.66W
7.52W
8.39W
9.29W
10.16W
11.03W
12.00W
13.02W
13.95W
15.84W
16.37W
17.36W
Efficiency
50.8%
62.2%
71.6%
76.6%
80.7%
82.9%
84.9%
86.2%
85.9%
87.9%
88.7%
90.0%
90.2%
89.8%
90.2%
92.0%
92.6%
93.5%
[2] Typical System Application (VIN=36V~60V)
Figure9. XL8002 System Application at VIN=36V~60V Schematic
Rev 1.0
www.xlsemi.com
8
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