XL4101 [ETC]
3A 150kHz 40V Buck Li Battery Charger; 3A 150kHz的40V降压型锂电池充电器
| 型号： | XL4101 |
| 厂家： | 
ETC |
| 描述： | 3A 150kHz 40V Buck Li Battery Charger |
| 文件： | 总6页 (文件大小：379K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
联系人：曹中立
电话：13428706223 QQ：1157008115
Datasheet
XL4101
3A 150kHz 40V Buck Li Battery Charger
Features
General Description
n Wide 4.5V to 40V Input Voltage Range
n Output Adjustable from 1.235V to 37V
The XL4101 is a 150KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 3A load with high
efficiency, low ripple and excellent line and
n
Minimum Drop Out 1.5V
n Fixed 150kHz Switching Frequency
n 3A Constant Output Current Capability
n Internal Optimize Power Transistor
load regulation. Requiring
a
minimum
number of external components, the regulator
is simple to use and include internal
n
n
n
Excellent line and load regulation
With output constant current loop
Built in thermal shutdown function
frequency
compensation
and
a
fixed-frequency oscillator.
n
n
n
Built in current limit function
Built in output over voltage protection
TO263-5L package
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An over
current protection function is built inside.
An internal compensation block is built in to
minimize external component count.
Applications
n Car Charger
n Battery Charger
Figure1. Package Type of XL4101
Rev 1.2
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1
Datasheet
XL4101
3A 150kHz 40V Buck Li Battery Charger
Pin Configurations
Figure2. Pin Configuration of XL4101 (Top View)
Table 1 Pin Description
Pin Number Pin Name Description
Supply Voltage Input Pin. XL4101 operates from a 4.5V to 40V
DC voltage. Bypass Vin to GND with a suitably large capacitor
to eliminate noise on the input.
1
VIN
Power Switch Output Pin (SW). Output is the switch node that
supplies power to the output.
Ground Pin.(Note: Connected the back exposed PAD to Pin3.)
Feedback Pin (FB). Through an external resistor divider
network, Feedback senses the output voltage and regulates it.
The feedback threshold voltage is 1.235V.
2
3
SW
GND
4
5
FB
CS
Output Current Sense Pin; (Iload=0.155V/Rcs)
Rev 1.2
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2
Datasheet
XL4101
3A 150kHz 40V Buck Li Battery Charger
Function Block
Figure3. Function Block Diagram of XL4101
Typical Application Circuit (Car Charger)
Figure4. XL4101 Typical Application Circuit (Li Battery Charger)
Rev 1.2
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3
Datasheet
XL4101
3A 150kHz 40V Buck Li Battery Charger
Typical Application Circuit (Buck LED Constant Current Driver)
Figure5. XL4101 Typical Application Circuit (LED Constant Current Driver)
Ordering Information
Part Number
Lead Free
Marking ID
Lead Free
Packing Type
Temperature
Package
Range
XL4101E1
XL4101TRE1
XL4101E1
XL4101E1
Tube
Tape & Reel
XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant.
Absolute Maximum Ratings（Note1）
Parameter
Symbol
Vin
Value
-0.3 to 45
Unit
V
Input Voltage
FB Pin Voltage
SW Pin Voltage
-0.3 to Vin
V
VFB
-0.3 to Vin
V
VSW
PD
Power Dissipation
Internally limited
mW
Thermal Resistance
30
ºC/W
RJA
(Junction to Ambient, No Heatsink, Free Air)
Operating Junction Temperature
Storage Temperature
-40 to 125
-65 to 150
260
ºC
ºC
ºC
V
TJ
TSTG
TLEAD
Lead Temperature (Soldering, 10 sec)
ESD (HBM)
2000
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.
Rev 1.2
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4
Datasheet
XL4101
3A 150kHz 40V Buck Li Battery Charger
XL4101 Electrical Characteristics
Ta = 25℃;unless otherwise specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
System parameters test circuit figure4
Feedback
Voltage
Vin = 8V to 32V, Vout=5V
VFB
1.198 1.235 1.272
80
V
Iload=0.2A to 3A
Vin=12V ,Vout=5V
Iout=3A
Efficiency
-
-
%
ŋ
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
Symbol
Vin
Test Condition
Min. Typ. Max. Unit
Input operation voltage
Quiescent Supply Current
4.5
40
5
V
mA
Khz
A
Iq
VFB =Vin
2
Oscillator Frequency
Switch Current Limit
Fosc
IL
127
150
3.6
172
VFB =0
VFB=0V
ISW=2A
Output Saturation Voltage
VCE
VCS
1.1
1.4
V
V
Constant current sense
Voltage
0.140 0.155 0.170
Schottky Diode Selection Table
Current Surface Through VR (The same as system maximum input voltage)
Mount Hole
20V
30V
40V
50V
60V
1N5817
1N5818
1N5819
1A
3A
√
1N5820
MBR320
SK32
1N5821
MBR330
SK33
1N5822
√
√
MBR340 MBR350
SK34 SK35
MBR360
SK36
√
√
30WQ03
31DQ03
SR303
30WQ04 30WQ05
31DQ04 31DQ05
√
√
SR302
SR304
SR305
SR306
Rev 1.2
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5
Datasheet
XL4101
3A 150kHz 40V Buck Li Battery Charger
Package Information
TO263-5L
Rev 1.2
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6
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