TPS61305是TI公司的一款相机闪光灯LED驱动器产品，TPS61305是具有 12CTM 兼容接口和 LED 温度监控的 1.5A/4.1A 多个 LED 摄像机闪存驱动器，本页介绍了TPS61305的产品说明、应用、特性等，并给出了与TPS61305相关的TI元器件型号供参考。
TPS61305 - 具有 12CTM 兼容接口和 LED 温度监控的 1.5A/4.1A 多个 LED 摄像机闪存驱动器 - 相机闪光灯LED驱动器 - LED驱动器 - TI公司（Texas Instruments，德州仪器）
The TPS6130x device is based on a high-frequency synchronous boost topology with constant current sinks to drive up to three white LEDs in parallel (400mA/800mA/400mA 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 TPS6130x 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 flashlight synchronization with the camera module, the device offers a trigger pin (FLASH_SYNC) 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
- Zero Latency Tx-Masking Input
- Hardware Voltage Mode Selection Input (TPS61300, TPS61301)
- DC Light Mode Selection Input (TPS61300, TPS61306)
- Hardware Reset Input (TPS61301, TPS61305)
- LED Temperature Monitoring (TPS61305)
- Privacy Indicator LED Output
- Integrated LED Safety Timer
- 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
- Audio Amplifier Power Supply
