The LM46000 regulator is an easy-to-use synchronous step-down DC-DC converter capable of
driving up to 500 mA of load current from an input voltage range of 3.5 V to 60 V. The LM46000
provides exceptional efficiency, output accuracy and dropout voltage in a very small solution size.
An extended family is available in 1 A and 2 A load current options in pin-to-pin compatible
packages. Peak current mode control is employed to achieve simple control loop compensation and
cycle-by-cycle current limiting. Optional features such as programmable switching frequency,
synchronization, power-good flag, precision enable, internal soft start, extendable soft start, and
tracking provide a flexible and easy-to-use platform for a wide range of applications.
Discontinuous conduction and automatic frequency modulation at light loads improve light load
efficiency. The family requires few external components and pin arrangement allows simple, optimum
PCB layout. Protection features include thermal shutdown, VCC undervoltage
lockout, cycle-by-cycle current limit, and output short-circuit protection. The LM46000 device is
available in the 16-pin leaded HTSSOP (PWP) package (6.6 mm × 5.1 mm × 1.2 mm) with
0.65-mm lead pitch. Pin-to-pin compatible with LM46001, LM46002, LM43603, LM43602, LM43601, and
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