TPS61310 Series

1.5A multiple LED Camera flash driver with I2C compatible interface

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Key Features

• Operational Modes:Video Light and Flash StrobeVoltage Regulated Converter: 3.8 V to 5.7 V With Down ModeStandby: 2 µA (Typical)LED VFMeasurementPower-Save Mode for Improved Efficiency at Low Output Power, Up to 95% EfficiencyI2C Compatible Interface up to 3.4 MbpsDual Wire Camera Module InterfaceZero Latency Tx-Masking InputHardware Reset InputPrivacy Indicator LED OutputGPIO and Power Good OutputVarious Safe Operation and Robust Handling Features:LED Temperature MonitoringOpen and Shorted LED Detection and ProtectionIntegrated LED Safety TimerAutomatic Battery Voltage Droop Monitoring and ProtectionSmooth LED Current Ramp-Up and Ramp-DownUndervoltage LockoutTotal Solution Size of Less Than 25 mm2Available in a 20-Pin NanoFree™ DSBGA PackageOperational Modes:Video Light and Flash StrobeVoltage Regulated Converter: 3.8 V to 5.7 V With Down ModeStandby: 2 µA (Typical)LED VFMeasurementPower-Save Mode for Improved Efficiency at Low Output Power, Up to 95% EfficiencyI2C Compatible Interface up to 3.4 MbpsDual Wire Camera Module InterfaceZero Latency Tx-Masking InputHardware Reset InputPrivacy Indicator LED OutputGPIO and Power Good OutputVarious Safe Operation and Robust Handling Features:LED Temperature MonitoringOpen and Shorted LED Detection and ProtectionIntegrated LED Safety TimerAutomatic Battery Voltage Droop Monitoring and ProtectionSmooth LED Current Ramp-Up and Ramp-DownUndervoltage LockoutTotal Solution Size of Less Than 25 mm2Available in a 20-Pin NanoFree™ DSBGA Package

Description

The TPS6131x family is an integrated solution with a wide feature set for driving up to three LEDs for still-camera flash strobe and video-camera lighting applications. It is based on a high efficiency synchronous boost topology with combinable current sinks to drive up to three white LEDs in parallel. The 2-MHz switching frequency allows the use of small and low-profile 2.2-µH inductors. To optimize overall efficiency, the device operates with a low LED-feedback voltage and regulated output-voltage adaptation. The device integrates a control scheme that automatically optimizes the LED current flash budget as a function of the battery voltage condition. The TPS6131x not only operates as a regulated current source, but also as a standard voltage boost regulator. The device enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. These operating modes can be useful to supply other high power devices in the system (for example, a hands-free audio PA). To simplify video light and flash synchronization with the camera module, the device offers a dedicated control interface (STRB0, STRB1) for zero latency LED turnon time. The TPS6131x family is an integrated solution with a wide feature set for driving up to three LEDs for still-camera flash strobe and video-camera lighting applications. It is based on a high efficiency synchronous boost topology with combinable current sinks to drive up to three white LEDs in parallel. The 2-MHz switching frequency allows the use of small and low-profile 2.2-µH inductors. To optimize overall efficiency, the device operates with a low LED-feedback voltage and regulated output-voltage adaptation. The device integrates a control scheme that automatically optimizes the LED current flash budget as a function of the battery voltage condition. The TPS6131x not only operates as a regulated current source, but also as a standard voltage boost regulator. The device enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. These operating modes can be useful to supply other high power devices in the system (for example, a hands-free audio PA). To simplify video light and flash synchronization with the camera module, the device offers a dedicated control interface (STRB0, STRB1) for zero latency LED turnon time.