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3. TECHNICAL BRIEF
3.3 Power management IC
3.3.1 General 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
LGE Internal Use Only
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Only for training and service purposes