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TPS61305 - 产品图解:
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
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TI产品 - TPS61305介绍
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

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)

产品描述

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.

产品特性

  • 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

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