G2204/G2204B G2204C/G2204D 7-Channel DC-DC Converter for DSC
●General Description
■The G2204 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 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.
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G2204 、 G2204B 、 G2204C 、 G2204D 、 G2204K11U 、 G2204BK11U 、 G2204CK11U 、 G2204DK11U |
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[ digital cameras ][ DSC Power Supply ] |
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Datasheet |
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Please see the document for details |
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TQFN4X4-32 |
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English Chinese Chinese and English Japanese |
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May 26, 2011 |
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Ver: 0.1 |
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90 KB |
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