TPS62751 效率高达 92% 的 2.25MHz 降压转换器，具有可编程平均 输入电流限制，适用于 USB 应用
|
TPS62750 |
TPS62751 |
| Iout(Max)(A) |
1.5 |
1.5 |
| Vin(Min)(V) |
2.9 |
2.9 |
| Vin(Max)(V) |
6 |
6 |
| Vout(Min)(V) |
0.8 |
0.8 |
| Vout(Max)(V) |
5.1 |
5.1 |
| Preset Vout(V) |
0.78 |
0.78 |
| Iq(Typ)(mA) |
2250 |
2250 |
| Switching Frequency(Typ)(kHz) |
2.4 |
2.4 |
| Switch Current Limit(Typ)(A) |
Buck |
Buck |
| Topology |
-40 to 85 |
-40 to 85 |
| Operating Temperature Range(°C) |
10SON |
10SON |
| Pin/Package |
Catalog |
Catalog |
| Rating |
100 |
100 |
| Regulated Outputs(#) |
1 |
1 |
TPS62751 描述
The TPS6275x device is a highly efficient synchronous step down dc-dc converter optimized for USB powered portable applications. It can provide up to 1300mA average input current and is ideal for applications connected to a USB host.
With an input voltage range of 2.9 V to 6.0V, the device supports batteries with extended voltage range and is ideal for powering USB applications where USB compliance is required.
The TPS62751 operates at 2.25-MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The TPS62751 operates in Forced PWM mode allowing use in applications that are noise sensitive. An output discharge allows the load to discharge in shutdown.
TPS62751 特性
- Efficiency > 90% at Nominal Operating Conditions
- Programmable Average Input Current Limits for USB Applications
- 50mA to 300mA for Low Current Limit Range
- 300mA to 1.3A for High Current Limit Range ±10% Current Accuracy
- Stable Output Voltage for Load Transients to Minimize Overshoot at Load Step Response
- Hot Plug and Reverse Current Protection
- Automatic PFM/PWM Mode transition (TPS62750)
- Forced PWM for Noise Sensitive Applications (TPS62751)
- VIN Range From 2.9V to 6V
- Adjustable VOUT From 0.8V to 0.85×VIN
- Softstart for Inrush Current Prevention
- 2.25 MHz Fixed Frequency Operation
- Short Cicruit and Thermal Shutdown Protection
- Available in a 2.5 × 2.5 10 pin SON Package
- APPLICATIONS
- USB Wireless Modems
- Portable USB peripherals
- Handheld Computers
TPS62751 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS62751DSKR |
ACTIVE |
-40 to 85 |
1.05 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
GE |
| TPS62751DSKT |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
GE |
TPS62751 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 |
| TPS62751DSKR |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-1-260C-UNLIM |
TPS62751DSKR |
TPS62751DSKR |
| TPS62751DSKT |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-1-260C-UNLIM |
TPS62751DSKT |
TPS62751DSKT |
TPS62751 应用技术支持与电子电路设计开发资源下载
- TPS62751 数据资料 dataSheet 下载.PDF
- TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Understanding Boost Power Stages In Switchmode Power Supplies
(PDF 149 KB)
- Understanding Buck Power Stages In Switchmode Power Supplies
(PDF 173 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)
TPS62751 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS62751 评估模块 |
TPS62751EVM-413 |
Texas Instruments |
开发电路板/EVM |
| SwitcherPro(TM) 开关电源设计工具 |
SWITCHERPRO |
Texas Instruments |
应用软件 |
TPS62751 参考设计
| 说明 |
型号 |
公司 |
| LDO、降压/升压、2 相同步降压、同步升压参考设计 |
PR038 |
Texas Instruments |
| 以太网电源 - 同步反向参考设计 |
PMP386 |
Texas Instruments |
| 同步 降压，两个输入电压 4.5-5.5V 的升压 多输出电压 3.3V、5V 和 12V |
PMP146 |
Texas Instruments |
| 降压/升压参考设计 |
PMP379 |
Texas Instruments |
