600 mA step-down DC-DC maintains full-range efficiency
The AP3405 current mode, PWM synchronous, step-down converter operates with a 2.3V to 5.5V VIN range and supplies an output from 0.7V to 5.5V, accurate to ±1.5%, up to 600 mA. 32 µA quiescent current draw helps extend battery life and internal MOSFETs with low RDS(ON) enable high efficiency under all load conditions.
Protection features take care of both the end system and the device itself. These include hiccup mode short-circuit protection (SCP), under-voltage lock-out (UVLO), over-temperature protection (OTP) and over-current protection (OCP). The AP3405 in the U-DFN2020-8 package is priced at $0.33 (1000).
Diodes Inc.; www.diodes.com