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3.4.1 Features
Handles all GSM/GPRS Baseband Power Management
Input range: 2.8 V ~ 5.0 V
Charger input of up to 15 V
11 LDOs optimized for specific GSM/GPRS subsystems
2-step RTC LDO
600 mW Class AB audio amplifier
Booster for series backlight LED driver
Charge pump for parallel backlight LED driver
SPI interface
Pre-charge indication
Li-ion battery charge function
SIM card interface
RGB LED driver
Vcore for power-saver mode
Over-current and thermal overload protection
Programmable under voltage lockout protection
Power-on reset and start-up timer
96-pin TFBGA package
3.4.2 Applications
GSM/GPRS mobile handsets, basic phones and high-end phones.
3.4.3 General Description
The MT6318 is a power management system chip optimized for GSM/GPRS handsets,
especially those based on the MediaTek MT621x/MT622x system solution. MT6318 contains 11
LDOs, one to power each of the critical GSM/GPRS sub-blocks. Sophisticated controls are
available for power-up during battery charging, for the keypad interface, and for the RTC alarm.
The MT6318 is optimized for maximum battery life.
The 2-step RTC LDO design allows the RTC circuit to stay alive without a battery for several
hours.
The MT6318 battery charger can be used with a lithium-ion (Li+) battery.
The SIM interface provides the level shift between SIM card and microprocessor.
The MT6318 is available in a 96-pin TFBGA package.
The operating temperature range is -25°C to +85°C.
3.4.4 Ordering Information
ORDER # MARKING
MT6318A MT6318A/AY -25°C to +85°C
TEMP. RANGE
PACKAGE
TFBGA - 96L
-27-
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