TPS61311 - 具有 I2CTM 兼容接口的 1.5A 多重 LED 摄像机闪存驱动器。

TPS61311是TI德州仪器公司的一款相机闪光灯LED驱动器产品，TPS61311是具有 I2CTM 兼容接口的 1.5A 多重 LED 摄像机闪存驱动器。，本站介绍了TPS61311的封装应用图解、特点和优点、功能等，并给出了与TPS61311相关的TI元器件型号供参考。

TPS61311 - 具有 I2CTM 兼容接口的 1.5A 多重 LED 摄像机闪存驱动器。 - 相机闪光灯LED驱动器 - LED驱动器 - 德州仪器

产品描述

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 2MHz switching frequency allows the use of small and low-profile 2.2µH 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 (e.g. 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 turn-on time.

产品特性

Operational Modes:
- Video Light and Flash Strobe
- Voltage Regulated Converter: 3.8V...5.7V with Down Mode
- Standby: 2µA (typ.)
LED VF Measurement
Power-Save Mode for Improved Efficiency at Low Output Power, Up to 95% Efficiency
I2C Compatible Interface up to 3.4Mbits/s
Dual Wire Camera Module Interface
Zero Latency Tx-Masking Input
Hardware Reset Input
Privacy Indicator LED Output
GPIO/Power Good Output
Various Safe Operation and Robust Handling Features:
- LED Temperature Monitoring
- Open/Short LED Detection/Protection
- Integrated LED Safety Timer
- Automatic Battery Voltage Droop Monitoring and Protection
- Smooth LED Current Ramp-Up/Down
- Undervoltage Lockout
Total Solution Size of Less Than 25mm2
Available in a 20-Pin NanoFree (CSP)
APPLICATIONS
- Single/Dual/Triple White LED Flash Supply for Cell Phones and Smart-Phones
- Video Lighting for Digital Video Applications
- General Lighting Applications
- Audio Amplifier Power Supply

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