TPS61045 采用 QFN-8 封装的 28V 85% 效率的升压转换器，用于 LCD 应用领域
TPS61045 描述
The TPS61045 is a high frequency boost converter with digitally programmable output voltage and true shutdown. During shutdown, the output is disconnected from the input by opening the internal input switch. This allows a controlled power up/down sequencing of the display. The output voltage can be increased or decreased in digital steps by applying a logic signal to the CTRL pin. The output voltage range, as well as the output voltage step size, can be programmed with the feedback divider network. With a high switching frequency of up to 1 MHz, the TPS61045 allows the use of small external components and together, with the small 8-pin QFN package, a minimum system solution size is achieved.
|
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 |
TPS61045 特性
- Input Voltage Range . . .1.8 V to 6 V
- Output voltage of up to 28V possible
- Up to 85% Efficiency
- Digitally Adjustable Output Voltage Control
- Disconnects Output From Input During Shutdown
- Switching Frequency . . . Up to 1 MHz
- No Load Quiescent Current . . . 40 µA Typ
- Thermal Shutdown Mode
- Shutdown Current . . . 0.1 µA Typ
- Available in Small 3mm × 3mm QFN package
- APPLICATIONS
- LCD Bias Supply For Small to Medium LCD Displays
- OLED Display Power Supply
- PDA, Pocket PC, Smart Phones
- Handheld Devices
- Cellular Phones
TPS61045 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 |
| TPS61045DRBR |
ACTIVE |
-40 to 85 |
0.85 | 1ku |
SON (DRB) | 8 |
3000 | LARGE T&R |
BHS |
| TPS61045DRBRG4 |
ACTIVE |
-40 to 85 |
0.85 | 1ku |
SON (DRB) | 8 |
3000 | LARGE T&R |
BHS |
| TPS61045DRBT |
ACTIVE |
|
0.90 | 1ku |
SON (DRB) | 8 |
250 | SMALL T&R |
BHS |
| TPS61045DRBTG4 |
ACTIVE |
|
0.90 | 1ku |
SON (DRB) | 8 |
250 | SMALL T&R |
BHS |
TPS61045 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 |
| TPS61045DRBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS61045DRBR |
| TPS61045DRBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61045DRBRG4 |
TPS61045DRBRG4 |
| TPS61045DRBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS61045DRBT |
| TPS61045DRBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61045DRBTG4 |
TPS61045DRBTG4 |
TPS61045 应用技术支持与电子电路设计开发资源下载
- TPS61045 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)
TPS61045 相关工具
TPS61045 参考设计
| 说明 |
型号 |
公司 |
| 以太网电源 - 同步反向参考设计 |
PMP411 |
Texas Instruments |
