TPS61040 采用 SOT-23 封装用于 LCD 和白光 LED 的 28V 400mA 开关升压转换器
TPS61040 描述
The TPS61040/41 is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is ideal to generate output voltages up to 28 V from a dual cell NiMH/NiCd or a single cell Li-Ion battery. The part can also be used to generate standard 3.3-V/5-V to 12-V power conversions.
The TPS61040/41 operates with a switching frequency up to 1 MHz. This allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin SON package, the TPS61040/41 gives a very small overall solution size. The TPS61040 has an internal 400 mA switch current limit, while the TPS61041 has a 250-mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications
|
TPS61040 |
TPS61041 |
TPS61042 |
TPS61043 |
TPS61045 |
| Topology |
Boost |
Boost |
Boost |
Boost |
Boost |
| Type |
Inductive |
Inductive |
Inductive |
Inductive |
Inductive |
| Vin(Min)(V) |
1.8 |
1.8 |
1.8 |
1.8 |
1.8 |
| Vin(Max)(V) |
6 |
6 |
6 |
6 |
6 |
| Switch Current Limit(Typ)(A) |
0.4 |
0.25 |
0.5 |
0.5 |
0.45 |
| Output Voltage(Max)(V) |
28 |
28 |
28 |
16.9 |
28 |
| Switching Frequency(Max)(kHz) |
1000 |
1000 |
1000 |
1000 |
1000 |
| LED(#) |
6 |
4 |
6 |
4 |
1 OLED or 6 |
| LED Configuration |
Series |
Series |
Series |
Series |
Series |
| Over-Voltage Protection(Min)(V) |
|
|
28 |
17 |
|
| Peak Efficiency(%) |
86 |
85 |
85 |
85 |
|
| Iq(Typ)(mA) |
0.028 |
0.028 |
0.038 |
0.038 |
0.04 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
5SOT-23, 6SON |
5SOT-23, 6SON |
8SON |
8SON |
8SON |
| Iout(Max)(A) |
0.09 |
0.05 |
0.03 |
0.03 |
0.02 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
TPS61040 特性
- 1.8-V to 6-V Input Voltage Range
- Adjustable Output Voltage Range up to 28 V
- 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current
- Up to 1-MHz Switching Frequency
- 28-µA Typical No-Load Quiescent Current
- 1-µA Typical Shutdown Current
- Internal Soft Start
- Available in SOT23-5 and 2 × 2 × 0.8-mm SON Packages
- APPLICATIONS
- LCD Bias Supply
- White-LED Supply for LCD Backlights
- Digital Still Camera
- PDAs, Organizers, and Handheld PCs
- Cellular Phones
- Internet Audio Player
- Standard 3.3-V/5-V to 12-V Conversion
TPS61040 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 |
| TPS61040DBVR |
ACTIVE |
-40 to 85 |
0.75 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
PHOI |
| TPS61040DBVRG4 |
ACTIVE |
-40 to 85 |
0.75 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
PHOI |
| TPS61040DRVR |
ACTIVE |
-40 to 85 |
0.75 | 1ku |
SON (DRV) | 6 |
3000 | LARGE T&R |
CCL |
| TPS61040DRVRG4 |
ACTIVE |
-40 to 85 |
0.75 | 1ku |
SON (DRV) | 6 |
3000 | LARGE T&R |
CCL |
| TPS61040DRVT |
ACTIVE |
-40 to 85 |
0.85 | 1ku |
SON (DRV) | 6 |
250 | SMALL T&R |
CCL |
| TPS61040DRVTG4 |
ACTIVE |
-40 to 85 |
0.85 | 1ku |
SON (DRV) | 6 |
250 | SMALL T&R |
CCL |
TPS61040 质量与无铅数据
TPS61040 应用技术支持与电子电路设计开发资源下载
- TPS61040 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)
TPS61040 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 免费工具：TPS61040 和 TPS6141 组件计算器 |
TPS6104XCALC |
Texas Instruments |
开发电路板/EVM |
| 用于 LCD 电源、18V/20mA 的 TPS61040 升压转换器评估模块 |
TPS61040EVM-001 |
Texas Instruments |
开发电路板/EVM |
| 用于白光 LED 电源的 TPS61040 升压转换器评估模块 |
TPS61040EVM-002 |
Texas Instruments |
计算实用程序 |
TPS61040 参考设计
