80V 0.5A High Efficiency Buck PFM LED Constant Current Driver XL8001E1
|
Product model
| Input Voltage | Max. output voltage
| Max. output current
| Switching frequency
| Feedback voltage
| Package
|
XL8001
| 12V ~ 80V
| 1～8 LED
| 0.5A
| PFM
| Adj (0.1V)
| SOP8L
|
General Description of XL8001 The XL8001 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 12V~80V DC power supply. The XL8001 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.
The document describes a high efficiency LED driver desi gned to drive an LED driver at a current of 300mA from an input voltage range of 12 VDC to 80 VDC, output support 1~8 series 1W LED. The XL8001 also provides a sophisticated range of protection features including auto-restart for control loop open/short faults and output short-circuit conditions. Accurate hysteretic thermal shutdown ensures safe average PCB temperatures under all cond itions. Design with very low parts count. This document contains the converter specification, schematic, PCB diagram, bill of materials.
Features of XL8001 ● Operation Voltage DC 12V~80V.
● 0.1V current sense voltage reference.
● Directly drive 1~8 Series 1W LED.
● Excellent line and load regulation.
● Internal Optimize Power HV-MOSFET.
● Built in Thermal Shutdown Function.
● Built in Current Limiting Function.
● Built in Soft-Start Circuit.
● Available in SOIC-8 package.
● Up to 97% efficiency.
Applications of XL8001
● LED Lighting & LED LAMP
● General purpose LED lighting
Pin Configurations of XL8001
Pin Description of XL8001
Pin Number
| Pin Name
| Description
|
1
| START
| Internal soft start Pin.
|
2
| VREG
| Internal Voltage Regulation Pin. (The VREG is about 8V)
|
3,4
| CSP
| Current Sense Positive Pin. (The current sense voltage is 0.1V)
|
5,6
| VIN
| Input high voltage Pin. (Operation voltage 12V~80V)
|
7,8
| CSN
| Current Sense Negative Pin.
|
Typical Application Circuit of XL8001
Function Block Diagram of XL8001
Input VIN=12V/24V/36V/48V/60V/72V system parameters table of XL8001:
