n Car Charger.
n Battery Charger.
n USB Power Supply.
Figure1. Package Type of XL2001
Pin Configurations
Figure2. Pin Configuration of XL2001 (Top View)
Table 1 Pin Description
Pin Number
Pin Name Description
1 FB Feedback Pin (FB). The feedback threshold voltage is 5V . 2
NC No Connected.
3 VC Internal V oltage Regulator Bypass Capacity. In typical system application, The VC pin connect a 1uf capacity to VIN.
4 VIN Supply V oltage Input Pin. XL2001 operates from 8V to 45V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input.
5,6 SW Power Switch Output Pin (SW). SW is the switch node that supplies power to the output.
7,8 GND
抽油机模型Ground Pin. Care must be taken in layout. This pin should be placed outside of the schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL2001.制冰袋
Function Block
Figure3. Function Block Diagram of XL2001
Typical Application Circuit
直链烷基苯
Figure4. XL2001Typical Application Circuit (VIN=8V~45V, VOUT=5V/1.8A)
Part Number Marking ID Lead Free Lead Free Packing Type
Package Temperature
Range
XL2001E1 XL2001E1 2500 Units on Tape & Reel
XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant.
Absolute Maximum Ratings（Note1）
Parameter Symbol Value Unit Input Voltage Vin -0.3 to 50 V Feedback Pin Voltage V FB-0.3 to Vin V Output Switch Pin Voltage V Output-0.3 to Vin V Power Dissipation P D Internally limited mW Thermal Resistance (SOP8L)
(Junction to Ambient, No Heatsink, Free Air)
R JA100 ºC/W Operating Junction Temperature T J-40 to 125 ºC Storage Temperature T STG-65 to 150 ºC Lead Temperature (Soldering, 10 sec) T LEAD260 ºC ESD (HBM) >2000 V Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
XL2001 Electrical Characteristics
T a = 25℃;unless otherwise specified.
Symbol Parameter Test Condition Min. Typ. Max. Unit System parameters test circuit figure4
VFB Feedback
V oltage
远程控制
杀虫灯
Vin = 8V to 45V, V out=5V Iload=0.5A to 1.8A
4.9 5
5.1 V
Efficiency ŋVin=12V ,V out=5V
钢领Iout=1.8A
- 90 - %
Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 47uF/50V capacitor; Iout=500mA, T a = 25℃; the others floating unless otherwise specified.
Parameters Symbol Test Condition Min. Typ. Max. Unit Input operation voltage Vin 8 45 V Quiescent Supply Current I q V FB =Vin 4.7 10 mA Output Short Supply Current Iosp 5 mA Oscillator Frequency Fosc 128 150 173 KHz Switch Current Limit I L V FB =0 2 A
Output Power PMOS Rdson V FB=0V, Vin=12V,
I SW=1.8A
60 80 mohm
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