TPS65251 具有 3 个 DC/DC 转换器和充电泵的 PMU，输入电压高达 18V
TPS65251 描述
The TPS65251 features three synchronous wide input range high efficiency buck converters. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application.
The converters can operate in 5-, 9-, 12-, 15- and 18-V systems and have integrated power transistors. The output voltage can be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. Each converter features enable pin that allows a delayed start-up for sequencing purposes, soft start pin that allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIMx) pin that enables designer to adjust current limit by selecting an external resistor and optimize the choice of inductor
|
TPS65250 |
TPS65251 |
| Vin(Min)(V) |
4.5 |
4.5 |
| Vin(Max)(V) |
18 |
18 |
| Step-Down DC/DC Converter |
3 |
3 |
| Pin/Package |
40VQFN |
40VQFN |
| Topology |
Multi-Channel |
Multi-Channel |
| Regulated Outputs(#) |
3 |
3 |
TPS65251 特性
- Wide Input Supply Voltage Range
(4.5 V – 18 V)
- 0.8 V, 1% Accuracy Reference
- Continuous Loading: 3 A (Buck 1),
2 A (Buck 2 and 3)
- Maximum Current: 3.5 A (Buck 1),
2.5 A (Buck 2 and 3)
- Adjustable Switching Frequency
300 kHz – 2.2 MHz Set By External Resistor
- External Synchronization Pin for Oscillator
- External Enable/Sequencing and Soft Start Pins
- Adjustable Current Limit Set By External Resistor
- Soft Start Pins
- Current-Mode Control With Simple Compensation Circuit
- Power Good and Reset Generator
- Storage and Release Circuit Optimized for Reduction of
Storage Capacitance in Dying Gasp Mode (Option)
- Low Power Mode Set By External Signal
- QFN Package, 40-Pin 6 mm × 6 mm RHA
- APPLICATIONS
- xDSL/xPON Modems
- Cable Modems
- Power Line Modem
- Home Gateway and Access Point Networks
- Wireless Routers
TPS65251 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） | Quantity |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS65251RHAR |
ACTIVE |
-10 to 125 |
3.20 | 1ku |
VQFN (RHA) | 40 |
2500 | LARGE T&R |
TPS
65251 |
| TPS65251RHAT |
ACTIVE |
-10 to 125 |
3.70 | 1ku |
VQFN (RHA) | 40 |
250 | SMALL T&R |
TPS
65251 |
TPS65251 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 |
| TPS65251RHAR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS65251RHAR |
TPS65251RHAR |
| TPS65251RHAT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS65251RHAT |
TPS65251RHAT |
TPS65251 应用技术支持与电子电路设计开发资源下载
- TPS65251 数据资料 dataSheet 下载.PDF
- TI 德州仪器应用处理器的集成电源管理产品选型与价格 . xls
TPS65251 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 用于 TPS65251 2 通道电源管理 IC 的评估模块 |
TPS65251EVM-515 |
Texas Instruments |
开发电路板/EVM |
| TPS65251 EVM 评估软件 |
TPS65251EVM-SW |
Texas Instruments |
应用软件 |