TPS65170 具有用于外部充电泵的稳压器的 4 通道 LCD 偏置
TPS65170 描述
The TPS65170 provides a simple and economic power supply solution for a wide variety of LCD bias applications.
In typical display panel applications, the boost converter generates the display panel’s source voltage VS, the buck converter generates the system’s logic supply VLOGIC, and the two charge pump controllers regulate the external charge pumps generating the display transistors’ on and off supplies VGH and VGL.
By using external transistors to regulate the charge pump output voltage, power dissipation in the IC is significantly reduced, simplifying PCB thermal design and improving reliability.
The TPS65170 also provides a reset circuit that monitors the buck converter output (VLOGIC) and generates a reset signal for the timing controller during power-up
|
TPS65170 |
| Vin(Min)(V) |
8.6 |
| Vin(Max)(V) |
14.7 |
| Vout(Min)(V) |
15 |
| Vout(Max)(V) |
18.5 |
| DC/DC Converter |
2 |
| Charge Pump |
2 |
| Pin/Package |
28VQFN |
| Vlogic1 Ilim(Min)(A) |
Buck 1.5 |
| Vlogic1(Min)(V) |
Fixed 3.3 |
| VGH / Vpos (Igh) |
External Linear Regulator |
| VGL / Vneg (Igl) |
External Linear Regulator |
| Operating Temperature Range(°C) |
-40 to 85 |
| Switching Frequency(Typ)(kHz) |
750 |
| AVDD Ilim(Min)(A) |
2.8 |
| Analog Voltage AV/DD(Max)(V) |
18.5 |
| Over-Voltage Protection(Max)(V) |
5% of AVDD |
| Regulated Outputs(#) |
4 |
| Isolation Switch |
External |
| Rating |
Catalog |
| Topology |
Buck, Boost, Charge Pump |
| Special Function |
Reset Generator |
| Iout(Max)(A) |
2 |
| Iq(Typ)(mA) |
1 |
| Vout1(V) |
3.3 |
| Target Application |
TV, Monitor 12V |
TPS65170 特性
- 8.6V to 14.7V Input Voltage Range
- 2.8A Boost Converter Switch Current Limit
- Boost Converter Output Voltages up to 18.5V
- Boost and Buck Converter Short-Circuit Protection
- 1.5A Buck Converter Switch Current Limit
- Fixed 750kHz Switching Frequency for Buck and Boost Converters
- Fixed Buck Converter Soft-Start
- Programmable Boost Converter Soft-Start
- Two Charge Pump Controllers to Regulate VGH and VGL
- Control Signal for External High-Side MOSFET Isolation Switch
- Reset Signal With Programmable Reset Pulse Duration
- Thermal Shutdown
- 28-Pin 5×5 mm QFN Package
- APPLICATIONS
TPS65170 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 |
| TPS65170RHDR |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
VQFN (RHD) | 28 |
3000 | LARGE T&R |
|
| TPS65170RHDT |
ACTIVE |
-40 to 85 |
1.65 | 1ku |
VQFN (RHD) | 28 |
250 | SMALL T&R |
|
TPS65170 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 |
| TPS65170RHDR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS65170RHDR |
TPS65170RHDR |
| TPS65170RHDT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS65170RHDT |
TPS65170RHDT |
TPS65170 应用技术支持与电子电路设计开发资源下载
- TPS65170 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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