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 sections 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
2. Block Diagram
Figure 2-1. Functional Block Diagram
IMAX = 0.8A
GATE-CHG Battery Charger CHG_IN Battery Charger Controller VBAT
VBAT Li-Ion Battery
GND
Over Voltage
1MΩ 1%
BATMON
To ADC fo Digital MCU for Battery Monitoring
GND
Under Voltage
1MΩ 1% GND GND VBAT
DIGITAL
CHG
GND
DIGITAL
FLASH_LED LED-OUT GND
VPAD EN POR PMC STATE MACHINE 10 kHz OSC LS SPI reset EN Over-Temp VBAT > 3.2V RESET GENERATOR 35 ms State Machine Reset en_vcore en_vpad CORE DC/DC VIN LP EN DCDC LX FB GND LX VCORE GND1 RESET-B
VPAD
DC-ON DC-ON UP-ON/OFF UP-ON/OFF ON/OFF ON/OFF
RESET-B
DGND
VCORE 1.9/2.5V/300 mA GND
CREF
CREF GND ECO-MODE
EN Vref
ECO -MODE ANALOG LDO VIN VBAT en_vcore AGND EN-ANALOG-B VBAT VIN-REG2 VBAT RTC SUPPLY BLOCK BAT-RTC 2.47V/2.66V 5 mA VCC-RTC 1.72V/2.7V 0.5 mA GND GND en_vcore EN-VIB GND BB1 TEST GND GND GND GND BAT-RTC VCC-RTC VBACK VIN LDO4 LDO5 AGND1 GND 2.7V BB1 DEEP DISCHARGED EN 2.6V GND BB1 VVIB VBAT VIBRATOR LDO VIN LDO3 EN GND DGND GND VOUT VIB-OUT V-VIB 2.8V/130 mA VIN LP EN GND EN-ANALOG-B VIN-REG1 EN BB1 PAD LDO VOUT LDO2 GND GND V-PAD V-PAD 2.8V/80 mA LDO1 2.8V GND AGND AGND VOUT AVCC AVCC 2.7/2.8V/130 mA
EN
2
AT73C214 Summary
6232AS–PMAAC–24-May-06
AT73C214 Summary
3. Ordering Information
Ordering Code AT73C214J
Package TFBGA 49
Package Type Green
Tempeature Opeating Range -40°C to +85°C
3
6232AS–PMAAC–24-May-06
Revision History
Doc. Rev 6232AS
Date 03-May-06 24-May-06
Comments First issue Qualified
Change Request Ref.
4
AT73C214 Summary
6232AS–PMAAC–24-May-06
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6232AS–PMAAC–24-May-06