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 lowdropout
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 synchronous
rectification improves efficiency and eliminates
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 current.
The output voltages are pin selectable from 1.8V
to 3.3V for flexibility.
A microprocessor reset output (RESET-bar) monitors OUT1
and warns the system of impending power loss allowing
safe shutdown. RESET-bar asserts during power-up,
power-down, shutdown, and fault conditions where
VOUT1 is below its regulation voltage.
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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