o 90% Efficient, 500mA Step-Down Converter o Two 100mA DAC-Controlled LDOs One 200mA DAC-Controlled LDO One 20mA DAC-Controlled LDO o 3 to 6-Cell NiCd or NiMH Operation 1 or 2-Cell Li-Ion Operation o +2.7V to +12V Input Voltage Range o 250µA Standby ...