General Description

The G2205 provide a complete power supply solution for digital cameras. They improve performance, component count, and size compared to other multi-channel controllers in 2-cell AA, 1-cell Li-Ion, and multi-battery designs. On-chip MOSFETs provide up to 92~95 efficiency for critical power supplies. All channels DC/DC operate at one fixed frequency of 1.5MHz/750KHz to optimize size, cost, and efficiency. All Synchronous converters operate at pulse skipping mode at light load. They also feature True-Shutdown as well as internal compensation to minimize external component count..

Features

■ 1.5V ~ 5.5V Input Voltage Operation.

■ 95 Efficient DC/DC Converter

■ Highly Integrated 7-CH DC/DC with integrated Power MOSFETs

■ Main Channel Selectable Buck or Boost for 2*AA or Li-Ion Application

■ Built-in 6 Channel Synchronous Rectified Current-Mode PWM/PSM Converter, 1 Channel Non-Synchronous Rectified Current-Mode PWM Converter.

■ Boost Type with LED open protection LED Driver

■ 32-steps brightness control by I2C for LED Driver

■ Built-in HV LDO and RTC LDO

■ Built-in 4 LDO regulators

■ Low Power Consumption ( Sleep Mode ) < 10µA.

■ Built-In Selectable Power ON/OFF Sequence for 4 Channel Synchronous Rectified Converter.

■ Built-In Power ON/OFF Sequence by I2C for CCD+,CCD- power, and HVLDO.

■ Built-In Short Circuit Protection (SCP) & Under Voltage Protection (UVP)

■ Cycle-by-Cycle current limit for DC/DC Converter

■ Built-In Thermal Shutdown Function.

■ Built-In Battery OVP Function.

■ Built-In Soft-Start Function.

■ Built-In True Shutdown in Boost Converter.

■ Fixed 1.5MHz/750KHz Operating Frequency.

■ TQFN40 Package (5mmx5mm).

Applications

DSC and DV Power Supply