Example of ASIC developed: 2.5G PMU for Mobiles optimized for handset and handheld devices

Application examples:

Digital Still Camera (DSC), CD players, PDAs,
Smartphones, Portable devices
Power management section details:
- Supply from 2 x Cells Alkaline /
  NiMh, or 1 x rechargeable Li-Ion batteries
- Battery Charger Interface

7 X DC to DC Power Supplies:

SW1: 1.2V to 1.8V – 100mV step and 2.5V / 300mA fully integrated STEP DOWN DC to DC Converter with low power mode for Core Processing Unit
PWM1: 2.1V to 5.0V – 100mV step and 5.25V / 1200mA BOOST DC to DC Converter for IO processing Unit
PWM2: 2.1V to 5.0V – 100mV step and 5.25V / 1200mA BOOST DC to DC Converter (Motor, Main supply, ..)
PWM3: INVERTER Controller e.g. –7V / 30mA for Imager negative voltage generation
PWM4: STEP UP Controller e.g. +15V / 30mA for Imager positive voltage generation
PWM5: STEP UP Controller e.g. +15V / 30mA for LCD/Imager high voltage generation
PWM6: STEP UP Controller e.g. +15V / 30mA for auxiliary voltages

5 X Voltage linear regulators:

VSAVE LDO: 2V / 2mA regulator for internal supply (state machine, power on reset, oscillators)
VBACKUP LDO: 2V to 3V (2.2V and 2.5V steps) / 500µA regulator for back-up battery or super Cap
VRTC LDO: 1.8V / 50µA regulator for external low voltage RTC supply
VANA LDO: 2.8V / 100mA low noise (< 25uVrms) high PSRR regulator for external analog
LDO1: 1.8V to 5.0V – 100mV step and 5.25V / 1200mA Voltage regulator with external FET for DDR supply and DDR voltage reference
LDO2: 1.8V to 5.0V – 100mV step and 5.25V / 1200mA Voltage regulator with external FET for system supply
LDO3: 1.8V to 5.0V – 100mV step and 5.25V / 1200mA Voltage regulator with external FET for supply any kind of interface on board

Auxiliary cells: