XL1410E1 [ETC]
2A 380KHz 18V Buck DC to DC Converter;
| 型号： | XL1410E1 |
| 厂家： | 
ETC |
| 描述： | 2A 380KHz 18V Buck DC to DC Converter |
| 文件： | 总9页 (文件大小：282K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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联系人：曹中立
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电话：13428706223 QQ：1157008115
Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Features
General Description
Wide 3.6V to 18V Input Voltage Range
Output Adjustable from 1.222V to 16V
The XL1410 is a 380KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 2A 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 Duty Cycle 100%
Minimum Drop Out 0.6V
Fixed 380KHz Switching Frequency
2A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency
Excellent line and load regulation
TTL shutdown capability
frequency
compensation
and
a
fixed-frequency oscillator.
EN pin with hysteresis function
Built in thermal shutdown function
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
is built inside. When short protection function
happens, the operation frequency will be
reduced from 380KHz to 80KHz. An internal
compensation block is built in to minimize
external component count.
Built in current limit function
Built in output short protection function
Available in SOP8 package
Applications
LCD Monitor and LCD TV
Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
Figure1. Package Type of XL1410
Rev 1.0
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1
Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Pin Configurations
NC
1
8
NC
2
3
7
6
EN
NC
VIN
SW
XL1410
4
5
FB
GND
Figure2. Pin Configuration of XL1410 (Top View)
Pin Number Pin Name Description
1,6,8
NC
No Connected.
Supply Voltage Input Pin. XL1410 operates from a 3.6V to 18V
DC voltage. Bypass Vin to GND with a suitably large capacitor
to eliminate noise on the input.
2
VIN
Power Switch Output Pin (SW). Output is the switch node that
supplies power to the output.
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 XL1410.
3
4
SW
GND
Feedback Pin (FB). Through an external resistor divider
network, Feedback senses the output voltage and regulates it.
The feedback threshold voltage is 1.222V.
Enable Pin. Drive EN pin low to turn off the device, drive it
high to turn it on. Floating is default high.
5
FB
EN
7
Function Block
Figure3. Function Block Diagram of XL1410
Rev 1.0
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2
Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Typical Application Circuit
Figure4. XL1410 Typical Application Circuit
System Efficiency Curve
Rev 1.0
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Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Ordering Information
Part Number
Lead Free
XL1410E1
XL1410TRE1
Marking ID
Lead Free
Packing Type
Temperature
Range
Package
XL1410E1
XL1410E1
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 20
Unit
V
Input Voltage
Feedback Pin Voltage
-0.3 to Vin
V
VFB
EN Pin Voltage
-0.3 to Vin
-0.3 to Vin
V
VEN
Output Switch Pin Voltage
Power Dissipation
V
VOutput
PD
Internally limited
mW
Thermal Resistance (SOP8)
(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
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Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
XL1410 Electrical Characteristics
Ta = 25℃;unless otherwise specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
System parameters test circuit figure4
Feedback
Voltage
Vin = 7V to 18V, Vout=5V
VFB
1.186 1.222 1.258
89
V
Iload=0.2A to 2A
Vin=12V ,Vout=5V
Iout=2A
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
Shutdown Supply Current
3.6
18
V
ISTBY
VEN=0V
60
3
200
uA
VEN =2V,
VFB =Vin
Quiescent Supply Current
Iq
5
mA
Oscillator Frequency
Switch Current Limit
Fosc
IL
323
380
4
437
Khz
A
VFB =0
High (Regulator ON)
Low (Regulator OFF)
1.4
0.8
EN Pin Threshold
VEN
V
IH
IL
VEN =2V (ON)
VEN =0V (OFF)
VFB=0V
1
1
15
15
uA
uA
%
EN Pin Input Leakage
Current
Max. Duty Cycle
DMAX
100
Rev 1.0
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Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Test Circuit and Layout guidelines
Figure5. Standard Test Circuits and Layout Guides
Select R1 to be approximately 2K, use a 1% resistor for best stability.
C1 and CFF are optional; in order to increase stability and reduce the input power line noise, CIN
and C1 must be placed near to VIN and GND;
For output voltages greater than approximately 10V, an additional capacitor CFF is required. The
compensation capacitor is typically between 100 pf and 33 nf, and is wired in parallel with the
output voltage setting resistor, R2. It provides additional stability for high output voltage, low
input-output voltages, and/or very low ESR output capacitors, such as solid tantalum capacitors.
CFF=1/(31*1000*R2); This capacitor type can be ceramic, plastic, silver mica, etc. (Because of
the unstable characteristics of ceramic capacitors made with Z5U material, they are not
recommended.)
Rev 1.0
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Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
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 1.0
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Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Typical System Application for 12V ~ 5V/2A Version
Figure6. XL1410 System Parameters Test Circuit (12V ~ 5V/2A)
Typical System Application for 12V ~ 3.3V/2A
Figure7. XL1410 System Parameters Test Circuit (12V ~ 3.3V/2A)
Rev 1.0
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Datasheet
XL1410
2A 380KHz 18V Buck DC to DC Converter
Package Information
SOP8 Package Mechanical Dimensions
Rev 1.0
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9
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