TPS61052
- Four Operational Modes
- Torch and Flash up to ILED = 1200 mA
- Voltage-Regulated Boost Converter: 4.5 V,
5 V, and 5.25 V - Shutdown: 0.3 µlA (Typical)
- Total Solution Circuit Area < 25 mm2
- Up to 96% Efficiency
- I2C-Compatible Interface up to 400 kbps
- Integrated LED Turnon Safety Timer
- Zero Latency TX-Masking Input (TPS61050)
- Hardware Voltage Mode Selection Input
(TPS61052) - Integrated ADC for LED VF Monitoring
- Integrated Low Light Dimming Mode
- LED Disconnect During Shutdown
- Open and Shorted LED Protection
- Overtemperature Protection
- Available in a 12-Pin NanoFree™ (CSP) and
10-Pin QFN Packaging
The TPS6105x device is based on a high-frequency synchronous-boost topology with constant current sink to drive single white LEDs. The device uses an inductive fixed-frequency PWM control scheme using small external components, minimizing input ripple current.
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 only a 250-mV LED feedback voltage.
The TPS6105x device not only operates as a regulated current source, but also as a standard voltage-boost regulator. This additional operating mode can be useful to supply other high-power devices in the system, such as a hands-free audio power amplifier, or any other component requiring a supply voltage higher than the battery voltage (refer to TPS61052).
For highest flexibility, the LED current or the desired output voltage can be programmed through an I2C compatible interface. To simplify flash synchronization with the camera module, the device offers a trigger pin (FLASH_SYNC) for fast LED turnon time.
When the TPS6105x is not in use, it can be put into shutdown mode through the I2C-compatible interface, reducing the input current to 0.3 µA (typical). During shutdown, the LED pin is high impedance to avoid leakage current through the LED.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS6105x 1.2-A High-Power White LED Driver 2-MHz Synchronous Boost Converter With I2C Compatible Interface 数据表 (Rev. A) | PDF | HTML | 2015-9-30 | ||
| 白皮书 | 常见 LED 功能和 LED 驱动器设计注意事项 | 英语版 | 2020-9-21 | |||
| 应用手册 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018-12-11 | ||||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) | 2017-11-29 | ||||
| 应用手册 | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 2017-6-15 | ||||
| 应用手册 | 最小化升压转换器开关节点处的振铃 | 英语版 | 2008-7-15 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
SLUC569 — TPS61050/TPS61052 GUI Software
TPS6105XEVM-SW — TPS6105x 评估模块用软件
The TPS6105x EVM Software provides a software interface for the TPS6105x EVM boards. Use this software to change the TPS6105x IC registers via the USB Interface Adapter.
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| DSBGA (YZG) | 12 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |