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零件编号 | XL2596 | ||
描述 | 3A 150KHz 40V Buck DC to DC COnverter | ||
制造商 | XLSEMI | ||
LOGO | |||
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XLSEMI
3A 150KHz 40V Buck DC to DC Converter
Features
Wide 3.6 to 40V Input Voltage Range
3.3V,5V,12V, and adjustable versions
Output Adjustable from 1.23V to 38V
Maximum Duty Cycle 100%
Minimum Drop Out 1.3V
Fixed 150KHz Switching Frequency
3A Constant Output Current Capability
Internal Optimize Power Transistor
Up to 90% Efficiency
Excellent line and load regulation
TTL shutdown capability
Built in Frequency Compensation
Built in Soft Start Function
Built in Thermal Shutdown Function
Built in Current Limit Function
Built in Short Protection Function
Available in TO-220,TO-263 packages
Applications
LCD Monitor and LCD TV
Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
Datasheet
XL2596
General Description
The XL2596 is a 150 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 3A 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.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
and a short circuit protection function are
built inside. When OCP or SCP happens, the
operation frequency will be reduced from
150KHz to 30KHz. An internal compensation
block is built in to minimize external
component count.
2006 Rev 1.2
Figure1. Package Type of XL2596
1
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XLSEMI
3A 150KHz 40V Buck DC to DC Converter
Electrical Characteristics (System Parameters 5V Version)
Datasheet
XL2596
Fig6. XL2596 System Parameters Test Circuit
Ta = 25 ;unless otherwise specified.
Parameters
Symbol
Feedback Voltage
VFB
VOUT Line Regulation
RLINE
VOUT Load Regulation
RLOAD
Switching Frequency
Frequency of Short
Circuit Protection
Efficiency(12V~5V)
Foutput
Foutput1
ŋ
Test Condition
Vin = 7V to 36V
Vout=5V, Iout=0.5A
Vin = 7V to 36V
Vout=5V, Iout=0.5A
Vin=12V, Vout=5V
Iout=0.5 to 3A
Vin=12V, Vout=5V
Iout=0.5A
Vin=12V, Vout=Short
VFB<2.8V
Vin=12V ,Vout=5V
Iout=3A
Min.
4.8
127
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Typ. Max. Unit
5 5.2 V
0.5 2 %
0.8 2 %
150 173 KHz
30 KHz
81 - %
2006 Rev 1.2
www.xlsemi.com
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页数 | 14 页 | ||
下载 | [ XL2596.PDF 数据手册 ] |
零件编号 | 描述 | 制造商 |
XL2596 | 3A 150KHz 40V Buck DC to DC COnverter | XLSEMI |
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