TPS65530A

TPS65530A www.ti.com............................................................................................................................................................ SLVS835C – APRIL 2008 – REVISED APRIL 2009 FULLY INTEGRATED 8-CHANNEL DC/DC CONVERTER FOR DIGITAL STILL CAMERAS FEATURES 1 2 8-Channel DC/DC Converter and Low Dropout (LDO) Integrated Power MOSFET Switch Except CH8 – Boost (CH5/7) – Buck (CH1/3) – Buck-Boost (CH2/4) – Invert (CH6) Low-Power Suspend Mode (Sleep Mode) Power ON/OFF Sequence (CH1/2/3 and CH5/6) LED-Back Light Brightness Control (CH7) Fixed Switching Frequency (CH1–4: 1.5 MHz, CH5–8: 750 kHz) Fixed Max Duty Cycle Internally Soft Start Undervoltage Lockout (UVLO) Protection – Thermal Shutdown (TSD) – Overvoltage Protection (OVP) – Overcurrent Protection (OCP) Except CH8 Supply Voltage Range: 1.5 V to 5.5 V Operating Temperature Range: –25°C to 85°C 6 × 6 mm, 0.4-mm Pitch, 48-Pin QFN Package APPLICATIONS Digital Still Cameras (DSCs) Portable Electronics Equipment DESCRIPTION/ ORDERING INFORMATION The TPS65530A is a fully integrated 8-channel switching dc/dc converter, and seven channels have integrated power FET. CH2/4 are configured for H bridge for buck-boost topology and single inductor supports. These channels achieve higher efficiency in spite of input/output voltage conditions. CH7 has a brightness control and drives white LED by constant current. Also, CH7 supports overvoltage protection (OVP) for open l...