View ltc14334fa datasheet:

LTC1433/LTC1434 450mA, Low Noise Current Mode Step-Down DC/DC Converters DESCRIPTION FEATURES High Efficiency: Up to 93% The LTC®1433/LTC1434 are monolithic pulse width modu- Constant Frequency Adaptive PowerTM Operation lated step-down DC/DC converters. By utilizing current Input Voltage Range: 3V to 13.5V mode switching techniques, they provide excellent AC and Internal 0.6? Power Switch (VIN = 10V) DC load and line regulation. Both devices operate at a fixed Low Dropout Operation: 100% Duty Cycle frequency with the LTC1434 phase-lockable to an external Low-Battery Detector clock signal. Internal Power-On Reset Timer Both devices incorporate two internal P-channel power Current Mode Operation for Excellent Line and Load MOSFETs with a parallel combined resistance of 0.6? (