The TPS6132x device is based on a high-frequency synchronous boost topology with constant current sinks to drive up to three white LEDs in parallel (445mA/890mA/445mA maximum flash current). The extended high-current mode (HC_SEL) allows up to 1025mA/2050mA/1025mA flash current out of the storage capacitor.

The high-capacity storage capacitor on the output of the boost regulator provides the high-peak flash LED current, thereby reducing the peak current demand from the battery to a minimum.

The 2-MHz switching frequency allows the use of small and low profile 2.2µH inductors. To optimize overall efficiency, the device operates with a 400mV LED feedback voltage.

The TPS6132x device not only operates as a regulated current source, but also as a standard voltage boost regulator. The device keeps the output voltage regulated even when the input voltage exceeds the nominal output voltage. The device enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

To simplify DC light and flashlight synchronization with the camera module, the device offers a dedicated control interface (STRB0, STRB1) for zero latency LED turn-on time.

• Four Operational Modes
  • DC Light and Flashlight
  • Voltage Regulated Converter: 3.8V...5.7V
  • Standby: 2µA (typ.)
• Storage Capacitor Friendly Solution
• Automatic VF and ESR Calibration
• Power-Save Mode for Improved Efficiency at Low Output Power, Up to 95% Efficiency
• Output Voltage Remains Regulated When Input Voltage Exceeds Nominal Output Voltage
• I2C Compatible Interface up to 3.4Mbits/s
• Dual Wire Camera Module Interface
• Zero Latency Tx-Masking Input
• LED Temperature Monitoring
• Privacy Indicator LED Output
• Integrated LED Safety Timer
• GPIO/Flash Ready Output
• Total Solution Size of Less Than 25 mm2 (<1mm height)
• Available in a 20-Pin NanoFree (CSP)
• APPLICATIONS
  • Single/Dual/Triple White LED Flashlight Supply for Cell Phones and Smart-Phones
  • LED Based Xenon "Killer" Flashlight