TPS61305
- Four Operational Modes
- DC Light and Flashlight
- Voltage Regulated Converter: 3.8 V to 5.7 V
- Standby: 2 µA (Typical)
- 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 3.4 Mbits/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 (< 1 mm
height) - Available in a 20-Pin NanoFree™ (DSBGA)
The TPS6130xx device is based on a high-frequency synchronous boost topology with constant current sinks to drive up to three white LEDs in parallel (400-mA, 800-mA, and 400-mA maximum flash current). The extended high-current mode (HC_SEL) allows up to 1025-mA, 2050-mA, and 1025-mA 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 2.2-µH inductors. To optimize overall efficiency, the device operates with a 400-mV LED feedback voltage.
The TPS6130xx 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 turnon time.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS6130xx 1.5-A and 4.1-A Multiple LED Camera Flash Driver With I2C Compatible Interface datasheet (Rev. E) | PDF | HTML | 2016/4/26 | ||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 應用說明 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018/12/11 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs | 2011/9/19 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 20 | Ultra Librarian |