TPS61325 具有 12C 兼容接口的 1.5A/4.1A 多个 LED 摄像机闪存驱动器
TPS61325 描述
The TPS6132x device is based on a high-frequency synchronous boost topology with constant current sinks to drive up to three white LEDs in parallel (445mA/890mA/445mA 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 2.2uH inductors. To optimize overall efficiency, the device operates with a 400mV LED feedback voltage.
The TPS6132x device not only operates as a regulated current source, but also as a standard voltage boost regulator
|
TPS61325 |
| Topology |
Boost |
| Type |
Inductive |
| Vin(Min)(V) |
2.5 |
| Vin(Max)(V) |
5.5 |
| Switch Current Limit(Typ)(A) |
1.6 |
| Output Voltage(Max)(V) |
5.7 |
| Switching Frequency(Max)(kHz) |
1920 |
| LED(#) |
3 |
| LED Configuration |
Parallel |
| Over-Voltage Protection(Min)(V) |
4.5 or 5.8 |
| Peak Efficiency(%) |
95 |
| Iq(Typ)(mA) |
0.59 |
| Operating Temperature Range(°C) |
-40 to 85 |
| Pin/Package |
20DSBGA |
| Regulated Outputs(#) |
4 |
TPS61325 特性
- Four Operational Modes
- DC Light and Flashlight
- Voltage Regulated Converter: 3.8V...5.7V
- Standby: 2uA (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
- Dual Wire Camera Module Interface
- Zero Latency Tx-Masking Input
- LED Temperature Monitoring
- Privacy Indicator LED Output
- Integrated LED Safety Timer
- GPIO/Flash Ready Output
- 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
TPS61325 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS61325YFFR |
ACTIVE |
-40 to 85 |
1.70 | 1ku |
DSBGA (YFF) | 20 |
3000 | LARGE T&R |
|
| TPS61325YFFT |
ACTIVE |
-40 to 85 |
2.00 | 1ku |
DSBGA (YFF) | 20 |
250 | SMALL T&R |
|
TPS61325 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| TPS61325YFFR |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-1-260C-UNLIM |
TPS61325YFFR |
TPS61325YFFR |
| TPS61325YFFT |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-1-260C-UNLIM |
TPS61325YFFT |
TPS61325YFFT |
TPS61325 应用技术支持与电子电路设计开发资源下载
- TPS61325 数据资料 dataSheet 下载.PDF
- TI 德州仪器照明解决方案产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
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