LG Electronics KS360 service manual Power management IC, Block Description

3. TECHNICAL BRIEF

3.3Power management IC

3.3.1General Description

S-GOLDradio has a highly integrated Power and Battery Management block for mobile handsets.

Block Description

•Highly efficient step-down converter for main digital baseband supply including Core, DSP and memory interface (External Bus Unit).

•Support of S-GOLD standby power-down concept

•Low-drop-out (LDO) regulators for Flash and mobile RAM memory devices

•Voltage independent switching of two SIM cards

•LDO regulators for baseband I/O supply

•LDO regulator for analog mixed-signal section of S-GOLD

•Low-noise LDO regulators for RF devices

•Supply for Bluemoon Single, Infineon’s single chip solution for Bluetooth

•Audio amplifier 8 Ohms for handsfree operation and ringing

•Charge Control for charging Li-Ion/Polymer batteries under software control

•Pre-charge current generator with selectable current level

•RTC regulator with ultra-low quiescent current

•USB interface support for peripheral and mini-host mode

•Vibrator driver with adjustable voltage

•Fully controlable by software via I2C - Bus

•Temperature and battery voltage sensors

•Interrupt channels for peripherals

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