MB3893A

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27800-2E ASSP For Power Management Applications (Mobile Phones) Power Management IC for Mobile Phone MB3893A s DESCRIPTION MB3893A is a multi-function power management IC chip with built-in 4-channel series regulator providing the output control functions and power supply drop detection circuits required for mobile phones. The MB3893A includes lithium-ion battery charge control functions and functions as a built-in power management system ideal for mobile phone devices. s FEATURES [Power Supply Control Unit] Supply voltage range : VCC = 3.1 V to 4.8 V Low power consumption current during standby : 110 µA (Max.) Built-in 4-channel low-saturation voltage type series regulator : 2.5 V/2 channels, 1.8 V/1 channels, 2.0 V/1 channels (1.9 V and 2.2 V available as mask options) Built-in interruption detection and supply recovery functions eliminate need for supplementary power supply Built-in On/Off switch circuit with accidental operation prevention function Accurate supply voltage drop detection Built-in power-on reset (OUT1) function Detection voltage with hysteresis [Charge Control Unit] Supply voltage range : VIN = 3.4 V to 5.9 V Built-in lithium-ion battery charge control functions Charging voltage : 4.1 V/4.2 V (switchable) Built-in preliminary charging function Built-in re-charging function Built-in timer functions Built-in battery temperature detection function s PACKAGES 48-pin plastic LQFP 48-pin pl...