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593D107X0016E2W PDF预览

593D107X0016E2W

更新时间： 2024-12-01 12:54:23
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
12页 96K
描述
500mA Low Voltage Step-Down Synchronous

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中文翻译

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593D107X0016E2W 数据手册

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LTC1504A  
500m A Lo w Vo lta g e  
Ste p -Do wn Sync hro no us  
Switc hing Re g ula to r  
U
DESCRIPTION  
FEATURES  
The LTC®1504A is a self-contained, high efficiency syn-  
chronous buck switching regulator. It includes a pair of  
on-chip 1.3Ω power switches, enabling it to supply up to  
500mA of load current. Efficiency peaks at 92%, minimiz-  
ing heat and wasted power. The synchronous buck archi-  
tecture allows the output to source or sink current as  
required to keep the output voltage in regulation. 100%  
duty cycle operation minimizes dropout voltage.  
■
500mA Output Current at 3.3V Output  
Up to 92% Peak Efficiency  
100% Maximum Duty Cycle  
Internal Reference Trimmed to 1%  
Output Can Source or Sink Current  
Requires as Few as Four External Components  
Input Voltage Range: 4V to 10V  
Adjustable Current Limit  
■
■
■
■
■
■
■
■
Small SO-8 Package  
200kHz Switching Frequency Can Typically be  
The LTC1504A is available in adjustable and fixed 3.3V  
output versions. An adjustable current limit circuit pro-  
vides protection from overloads. The internal 1% refer-  
encecombinedwithasophisticatedvoltagefeedbackloop  
provides optimum output voltage accuracy and fast load  
transient response. The LTC1504A is specified to operate  
with input voltages between 4V and 10V. Contact the LTC  
factory for guaranteed specifications at 2.7V supply.  
■
Synchronized Up to 500kHz  
U
APPLICATIONS  
Daisy-Chained Control Outputs  
■
Small Portable Digital Systems  
Active Termination  
Auxiliary Output Voltage Supplies  
Minimum Part Count/Size Switchers  
■
■
The LTC1504A is a pin-compatible, functional upgrade to  
the LTC1504.  
■
The LTC1504A is available in a plastic SO-8 package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Minimum Part Count 5V to 3.3V Regulator  
5V to 3.3V Efficiency  
100  
NC SHUTDOWN  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
L
50µH  
EXT  
I
SHDN  
SW  
MAX  
3.3V AT 500mA  
5V  
V
CC  
+
C
22µF  
IN  
LTC1504A-3.3  
GND  
SS  
SENSE  
COMP  
+
C
OUT  
47µF  
NC  
1000pF  
C
: AVX TPSC226M016R0375  
: AVX TAJC476M010  
: COILTRONICS CTX50-1P  
IN  
C
OUT  
1504A • TA01  
L
EXT  
10  
100  
500  
LOAD CURRENT (mA)  
1504 • TA02  
1
1234567...12

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