General Description

The G2202/G2202B 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. Except for CCDBST and LED Driver, All channels DC/DC operate at one fixed frequency of 1.5MHz to optimize size, cost, and efficiency. 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 Converter, 1 Channel Non-Synchronous Rectified Current-Mode PWM Converter.

■ Selectable Boost Type with LED open protection or Current Regulation Type LED Driver.

■ 32-steps brightness control for LED Driver

■ Built-in HV LDO and RTC LDO

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

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

■ Built-In Power ON Sequence for CCD+,CCD power.

■ 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.

■ TQFN4x4-32 Package.

Applications

■ DSC Power Supply