Datasheet Summary
19-1489; Rev 0; 12/00
GSM Cellular/PCN Handset RF Power Management IC
General Description
The MAX1727 is a radio frequency (RF) power-management IC intended for Global Satellite Mobile (GSM) munication cellular and personal cellular network (PCN) handsets using a single lithium-ion (Li+) cell battery with inputs from +3.1V to +5.5V. The IC contains four low-noise, low-dropout (LDO) linear regulators to provide all the supply voltage requirements for the RF portion of the handset, and two high-speed, wide-bandwidth op amps for the power amplifier (PA) power control loop.
Each LDO has its own individual on/off control to maximize design flexibility. All LDOs are internally...