ETC XL1410

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联系电话:13428706223
电话:13428706223 QQ:1157008115 2A 380KHz 18V Buck DC to DC Converter
Datasheet
XL1410
Features
General Description
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Wide 3.6V to 18V Input Voltage Range
Output Adjustable from 1.222V to 16V
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Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
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Fixed 380KHz Switching Frequency
2A Constant Output Current Capability
Internal Optimize Power MOSFET
High efficiency
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
frequency
compensation
and
a
fixed-frequency oscillator.
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Excellent line and load regulation
TTL shutdown capability
EN pin with hysteresis 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 thermal shutdown function
Built in current limit function
Built in output short protection function
Available in SOP8 package
Applications
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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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Datasheet
2A 380KHz 18V Buck DC to DC Converter
XL1410
Pin Configurations
NC
1
VIN
2
8
NC
7
EN
XL1410
SW
3
6
NC
GND
4
5
FB
Figure2. Pin Configuration of XL1410 (Top View)
Pin Number
1,6,8
Pin Name
NC
2
VIN
3
SW
4
GND
5
FB
7
EN
Description
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.
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.
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.
Function Block
Figure3. Function Block Diagram of XL1410
Rev 1.0
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Datasheet
2A 380KHz 18V Buck DC to DC Converter
XL1410
Typical Application Circuit
Figure4. XL1410 Typical Application Circuit
System Efficiency Curve
Rev 1.0
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Datasheet
2A 380KHz 18V Buck DC to DC Converter
XL1410
Ordering Information
Package
Temperature
Range
Part Number
Lead Free
XL1410E1
XL1410TRE1
Marking ID
Lead Free
XL1410E1
XL1410E1
Packing Type
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
VFB
VEN
VOutput
PD
Value
-0.3 to 20
-0.3 to Vin
-0.3 to Vin
-0.3 to Vin
Internally limited
Unit
V
V
V
V
mW
Input Voltage
Feedback Pin Voltage
EN Pin Voltage
Output Switch Pin Voltage
Power Dissipation
Thermal Resistance (SOP8)
(Junction to Ambient, No Heatsink, Free Air)
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
ESD (HBM)
RJA
100
ºC/W
TJ
TSTG
TLEAD
-40 to 125
-65 to 150
260
2000
ºC
ºC
ºC
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.
Rev 1.0
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Datasheet
2A 380KHz 18V Buck DC to DC Converter
XL1410
XL1410 Electrical Characteristics
Ta = 25℃;unless otherwise specified.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
System parameters test circuit figure4
Feedback
Voltage
VFB
Efficiency
ŋ
Vin = 7V to 18V, Vout=5V
Iload=0.2A to 2A
Vin=12V ,Vout=5V
Iout=2A
1.186 1.222 1.258
-
89
-
V
%
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
Test Condition
Min.
Typ.
3.6
Max.
Unit
18
V
Input operation voltage
Vin
Shutdown Supply Current
ISTBY
VEN=0V
60
200
uA
Quiescent Supply Current
Iq
VEN =2V,
VFB =Vin
3
5
mA
380
437
Khz
Oscillator Frequency
Fosc
Switch Current Limit
IL
VFB =0
4
A
VEN
High (Regulator ON)
Low (Regulator OFF)
1.4
0.8
V
IH
VEN =2V (ON)
1
15
uA
IL
VEN =0V (OFF)
1
15
uA
DMAX
VFB=0V
100
EN Pin Threshold
EN Pin Input Leakage
Current
Max. Duty Cycle
323
Rev 1.0
%
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Datasheet
2A 380KHz 18V Buck DC to DC Converter
XL1410
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
2A 380KHz 18V Buck DC to DC Converter
XL1410
Schottky Diode Selection Table
Current
1A
3A
Surface Through VR (The same as system maximum input voltage)
Mount Hole
20V
30V
40V
50V
1N5817
1N5818
1N5819
√
60V
√
1N5820
1N5821
1N5822
√
MBR320
MBR330
MBR340 MBR350
MBR360
SK32
SK33
SK34
SK36
30WQ03
30WQ04 30WQ05
31DQ03
31DQ04
31DQ05
SR303
SR304
SR305
√
√
√
√
SR302
Rev 1.0
SK35
SR306
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Datasheet
2A 380KHz 18V Buck DC to DC Converter
XL1410
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
2A 380KHz 18V Buck DC to DC Converter
XL1410
Package Information
SOP8 Package Mechanical Dimensions
Rev 1.0
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