The LM43601 regulator is an easy to use synchronous step-down DC-DC converter capable of
driving up to 1 A of load current from an input voltage ranging from 3.5 V to 36 V (42 V
transient). The LM43601 provides exceptional efficiency, output accuracy, and dropout voltage in a
very small solution size. An extended family is available in 0.5-A, 2-A and 3-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 LM43601 device is available in the 16-leaded HTSSOP (PWP) package
(6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch. This device is pin-to-pin compatible with
LM46000, LM46001, LM46002, LM43600, LM43602, and LM43603.
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