Global Mixed-mode Technology Inc. G2202/G2202B 7-Channel DC-DC Converter for DSC Features General Description 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+,CCDpower. 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. 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. Applications DSC Power Supply Ordering Information ORDER NUMBER MARKING G2202K11U 2202 TEMP. RANGE PACKAGE (Green) -20°C to +85°C TQFN4X4-32 G2202BK11U 2202B -20°C to +85°C TQFN4X4-32 G2202: CH1-CH2-CH4-CH3, G2202B:CH1-CH4-CH3-CH2 Note: K1: TQFN4X4-32 1: Bonding Code U: Tape & Reel LXSD PVSD G2202/G2202B SU Synchronous Rectified Current Mode Step-Up 25 26 PVSU LXSU SDOK FBSU 27 28 29 PVZ 31 30 32 LXZ Pin Configurations FBZ 1 24 FBSD ONLED 2 23 ONSU ISET 3 22 VBG VOLED 4 21 VSU LXLED 5 20 RTCOUT LXBST 6 19 FBINV VOBST 7 18 VOINV 8 17 BATT SD Synchronous Rectified Current Mode Step-Down DDRZ Synchronous Rectified Current Mode Step-Down 16 CCD INV Current Mode Inverting CCD BST Synchronous Rectified Current Mode Step-Up LXINV 15 CCDSEQ 13 14 FBM LXM PVM 12 11 10 FBLDO PVM U/D LDOOUT 9 FBBST Thermal Pad MAIN Current Mode Selectable Step-Up/StepDown LED Driver Boost or current Regulator G2202/G2202B TQFN4X4-32 HV LDO/RTC LDO Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. Ver: 1.0 May 23, 2011 TEL: 886-3-5788833 http://www.gmt.com.tw 1