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LTC1504

Linear Technology
Part Number LTC1504
Manufacturer Linear Technology
Description 500mA Low Voltage Step-Down Synchronous Switching Regulator
Published Mar 27, 2005
Detailed Description Final Electrical Specifications LTC1504 500mA Low Voltage Step-Down Synchronous Switching Regulator FEATURES s s s s s...
Datasheet PDF File LTC1504 PDF File

LTC1504
LTC1504

Overview
Final Electrical Specifications LTC1504 500mA Low Voltage Step-Down Synchronous Switching Regulator FEATURES s s s s s s s s s DESCRIPTION The LTC®1504 is a self-contained, high efficiency synchronous buck switching regulator.
It includes a pair of on-chip 1.
5Ω power switches, enabling it to supply up to 500mA of load current.
Efficiency peaks at 92%, minimizing heat and wasted power.
The synchronous buck architecture allows the output to source or sink current as required to keep the output voltage in regulation.
The LTC1504 is available in adjustable and fixed 3.
3V output versions.
An adjustable current limit circuit provides protection from overloads.
The internal 1% reference combined with a sophisticated voltage feedback loop provides optimum output voltage accuracy and fast load transient response.
The LTC1504 is specified to operate with input voltages between 4V and 10V.
Contact the LTC factory for guaranteed specifications at 2.
7V supply.
The LTC1504 is available in a plastic SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
500mA Output Current at 3.
3V Output Up to 92% Peak Efficiency 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 be Synchronized Up to 500kHz U APPLICATIONS s s s s Small Portable Digital Systems Control Outputs Daisy-Chained Active Termination Auxiliary Output Voltage Supplies Minimum Part Count/Size Switchers TYPICAL APPLICATION Minimum Part Count 5V to 3.
3V Regulator NC IMAX 5V SHUTDOWN SHDN SW LEXT 3.
3V AT 500mA EFFICIENCY (%) 100 90 80 70 60 50 40 30 20 1504 • TA01 5V to 3.
3V Efficiency + CIN VCC LTC1504-3.
3 GND SS SENSE COMP 1000pF + COUT CIN: AVX TPSC226M016R0375 COUT: AVX TAJC476M010 LEXT: COILTRONICS CTX50-1P NC 10 0 10 100 LOAD CURRENT (mA) 500 1504 • TA02 Information furnished by Linear Technology Corporation i...


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