LTC1504 Datasheet | Linear Technology

Final Electrical Specifications LTC1504 500m A 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 500m A 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 bined 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. 500m A 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 ponents Input Voltage Range: 4V to 10V Adjustable Current Limit Small SO-8 Package 200k Hz Switching Frequency Can be Synchronized Up to 500k Hz 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 500m A EFFICIENCY (%) 100 90 80 70 60 50 40 30 20 - TA01 5V to 3.3V Efficiency + LTC1504-3.3 GND SS SENSE P 1000p F + COUT CIN: AVX TPSC226M016R0375 COUT: AVX TAJC476M010 LEXT: COILTRONICS CTX50-1P 10 0 10 100 LOAD CURRENT (m A) 500 - TA02 Information furnished by Linear Technology Corporation...