Update: 30 September, 2023
The MAX8620Y micro-power-management integrated circuit (µPMIC) powers low-voltage microprocessors or DSPs in portable devices. The µPMIC includes a high- efficiency step-down DC-DC converter, two low-dropout linear regulators (LDOs), a microprocessor reset output, and power-on/off control logic. This device maintains high efficiency at light loads with a low 115µA supply current, and its miniature TDFN package makes it ideal for portable devices. The MAX8620Y’s step-down DC-DC converter utilizes a proprietary 4MHz hysteretic-PWM control scheme that allows for ultra-small external components. Internal syn- chronous rectification improves efficiency and elimi- nates the external Schottky diode that is required in conventional step-down converters. The output voltage is adjustable from 0.6V to 3.3V, with guaranteed output current up to 500mA. The MAX8620Y’s two LDOs offer low 45µVRMS output noise and a low dropout of only 200mV at 200mA. Each LDO delivers at least 300mA of continuous output cur- rent. The output voltages are pin selectable from 1.8V to 3.3V for flexibility. A microprocessor reset output (RESET) monitors OUT1 and warns the system of impending power loss allow- ing safe shutdown. RESET asserts during power-up, power-down, shutdown, and fault conditions where VOUT1 is below its regulation voltage. Applications Cellular Handsets Smart Phones/PDA Phones PDAs Wireless LAN Microprocessor and DSP Solutions including MSM™, XScale™, ARM™, and OMAP™ Fe
File format: PDF
Size: -
MD5 Checksum: 1896B03CCB51B98D65A752CB6A25D8F8
Publication date: 09 May, 2012
Downloads: -
PDF Link: MAXIM MAX8620Y PMIC for Microprocessors or DSPs in Portable Equipment handbook PDF