AT73C214 Datasheet, PDF (1/5 Pages) ATMEL Corporation – Power Management and Battery Charger for Wireless Devices

Features
• Li-Ion or Li-polymer Battery Charger Controller
• DC to DC 1.9V/2.5V (VCORE)
• LDO 2.7V/2.8V (AVCC)
• LDO 2.8V (V-PAD)
• LDO 2.8V (V-VIB)
• LDO 2.47V/2.66V (BAT-RTC) - Backup Battery Supply
• LDO 1.72V/2.66V (VCC-RTC) - RTC Supply
• Power Management Startup Controller and Reset Generation
1. Description
The AT73C214 is designed to supply digital, analog, interface, RF and backup sec-
tions of generic wireless devices and in particular battery powered applications. It can
be used to supply a CPU with a high efficiency DC-to-DC Converter, Radio Frequency
transceivers with high PSRR and noise performance LDOs, Memories and Analog
Sections with independent LDO channels.
In addition the AT73C214 integrates LDOs to recharge backup elements and convert
voltage to microcontroller RTC supply.
The AT73C214 also includes a low-cost battery charger, using a simple external PNP
transistor for Li-Ion or Li-Polymer batteries. The battery-safe operating conditions are
fully under hardware control during the start up procedure (i.e., when the device is
turned on or a charger is plugged in). The battery precharge is integrated and self
operated by the AT73C214. Then the fast-charge phase and end-of-charge procedure
are transferred to the external microcontroller software.
LDO and DC-to-DC output voltage can be programmed by mask change.
Power
Management for
Mobiles (PM)
AT73C214
Power
Management and
Battery Charger
for Wireless
Devices
Summary
6232AS–PMAAC–24-May-06