XL2001 [XLSEMI]
深圳市杰立铭电子有限公司为一级代理商;
| 型号： | XL2001 |
| 厂家： | 
XLSEMI |
| 描述： | 深圳市杰立铭电子有限公司为一级代理商 电子 |
| 文件： | 总9页 (文件大小：180K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Features
General Description
Wide 8V to 45V input voltage range.
Fixed 5V output voltage.
The XL2001 is a 150 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 1.8A 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
Maximum 1.8A output current.
Fixed 150KHz switching frequency.
Internal optimize power MOSFET.
High efficiency up to 92%.
Built in output short shutdown function.
Excellent line and load regulation.
Built in thermal shutdown function.
Built in current limit function.
Available in SOP8L package.
frequency
compensation
and
a
fixed-frequency oscillator.
The XL2001 built in output short protection
function. When short protection function
happens, the chip will be shutdown. An
internal compensation block is built in to
minimize external component count.
Applications
Car Charger.
Battery Charger.
USB Power Supply.
Figure1. Package Type of XL2001
Rev 1.0
www.xlsemi.com
1
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Pin Configurations
Figure2. Pin Configuration of XL2001 (Top View)
Table 1 Pin Description
Pin Number
Pin Name Description
1
2
FB
NC
Feedback Pin (FB). The feedback threshold voltage is 5V.
No Connected.
Internal Voltage Regulator Bypass Capacity. In typical system
application, The VC pin connect a 1uf capacity to VIN.
Supply Voltage 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.
3
VC
VIN
SW
4
Power Switch Output Pin (SW). SW is the switch node that
supplies power to the output.
5,6
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.
7,8
GND
Rev 1.0
www.xlsemi.com
2
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Function Block
Figure3. Function Block Diagram of XL2001
Typical Application Circuit
Figure4. XL2001Typical Application Circuit (VIN=8V~45V, VOUT=5V/1.8A)
Rev 1.0
www.xlsemi.com
3
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Ordering Information
Order Information
XL2001E1
Marking ID
XL2001E1
Package Type
SOP8L
Packing Type Supplied As
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
Vin
Value
-0.3 to 50
Unit
V
Input Voltage
Feedback Pin Voltage
-0.3 to Vin
V
VFB
Output Switch Pin Voltage
Power Dissipation
-0.3 to Vin
V
VOutput
PD
Internally limited
mW
Thermal Resistance (SOP8L)
(Junction to Ambient, No Heatsink, Free Air)
Operating Junction Temperature
Storage Temperature
100
ºC/W
RJA
-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 1.0
www.xlsemi.com
4
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
XL2001 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 45V, Vout=5V
VFB
4.9
-
5
5.1
-
V
Iload=0.5A to 1.8A
Vin=12V ,Vout=5V
Iout=1.8A
Efficiency
90
%
ŋ
Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 47uF/50V capacitor; Iout=500mA, Ta =
25℃; the others floating unless otherwise specified.
Parameters
Symbol
Vin
Test Condition
Min. Typ. Max.
Unit
V
Input operation voltage
Quiescent Supply Current
8
45
10
5
Iq
VFB =Vin
4.7
mA
Output Short Supply Current
Oscillator Frequency
Iosp
Fosc
IL
mA
KHz
A
128
150
2
173
Switch Current Limit
VFB =0
VFB=0V, Vin=12V,
ISW=1.8A
Output Power PMOS
Rdson
60
80
mohm
Rev 1.0
www.xlsemi.com
5
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Typical System Application (VOUT=5V/1.8A)
Figure5. XL2001System Parameters Test Circuit (VIN=8V~45V, VOUT=5V/1.8A)
Output voltage VS Output current
5.5
5.0
4.5
4.0
3.5
VIN=12V,VOUT=5V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
500
1000
1500
2000
2500
Output current(mA)
Figure6. XL2001 System Output Constant Current Curve
Rev 1.0
www.xlsemi.com
6
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Efficiency VS Load current
100
95
90
85
80
75
70
65
60
55
50
45
40
Vin=8V,Vout=5V
Vin=12V,Vout=5V
Vin=24V,Vout=5V
Vin=36V,Vout=5V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Load current(A)
Figure7. XL2001 System Efficiency Curve
Rev 1.0
www.xlsemi.com
7
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Output short shutdown function description
The output short shutdown function is built in XL2001. The short protection circuit monitors the
output voltage, whenever FB pin voltage is below 1.5V, the short circuit protection circuit is
triggered, the converter will be shutdown, input current less than 5mA.
When the short fault is removed，if output load is floating, then converter will restart up, the
output voltage will return to normal; if output load isn’t floating, then converter must be power
reset , the output voltage will comeback.
VOUT
Swithing
Figure8. The converter will be shutdown when output short happen.
Input current VS Input voltage
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44
Input voltage(V)
Figure9. The input current curve when output short happen.
Rev 1.0
www.xlsemi.com
8
Datasheet
XL2001
5V/1.8A 150KHz 45V Buck DC to DC Converter For USB Interface
Package Information
SOP8 Package Mechanical Dimensions
Rev 1.0
www.xlsemi.com
9
相关型号：
©2020 ICPDF网 联系我们和版权申明