TPS61195 96 LED、8 通道白光 LED 驱动器，用于具有 SMBus 接口的 LCD 背光
TPS61195 描述
The TPS61195 IC provides highly integrated solutions for large-size LCD backlighting. This device has a built-in high efficiency boost regulator with integrated 2.5A/50V power MOSFET. The eight current sink regulators provide high precision current regulation and matching. In total, the device can support up to 96 LEDs. Unused sinks are disabled by tying them to ground. The boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.
The TPS61195 supports multiple brightness dimming methods. During PWM dimming, each IFB pin’s current is turned on/off at the duty cycle and frequency determined by an integrated pulse width modulation (PWM). The frequency of this signal is resistor programmable, while the duty cycle is controlled directly either from an external PWM signal input to the DPWM pin or through the SMBUS interface
|
TPS61195 |
| Topology |
Boost |
| Type |
Inductive |
| Vin(Min)(V) |
4.5 |
| Vin(Max)(V) |
21 |
| Switch Current Limit(Typ)(A) |
2.5 |
| Output Voltage(Max)(V) |
45 |
| Switching Frequency(Max)(kHz) |
1000 |
| LED(#) |
96 |
| LED Configuration |
Series |
| Over-Voltage Protection(Min)(V) |
45 |
| Peak Efficiency(%) |
94 |
| Iq(Typ)(mA) |
3 |
| Operating Temperature Range(°C) |
-40 to 85 |
| Pin/Package |
28WQFN |
| Iout(Max)(A) |
0.24 |
| Regulated Outputs(#) |
8 |
TPS61195 特性
- 4.5V to 21V Input Voltage
- Integrated 2.5A 50V MOSFET
- 600kHz to 1MHz Programmable Switching Frequency
- Adaptive Boost Output for Best Efficiency
- Designed to Use Small L-C Components
- Internal Loop Compensation
- Eight Current Sinks of 30mA
- Support up to Total 96 LEDs
- 1% Current Matching
- PWM and SMBus Brightness Interface
- 8-bits (256 steps) Brightness Level
- Programmable Over Voltage Threshold
- Built-in WLED Open/Short Protection
- Over Thermal Protection
- 28L 4×4 WQFN
- APPLICATIONS
- Notebook/Netbook LCD Display Backlighting
TPS61195 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 |
| TPS61195RUYR |
ACTIVE |
-40 to 85 |
1.95 | 1ku |
WQFN (RUY) | 28 |
3000 | LARGE T&R |
|
| TPS61195RUYT |
ACTIVE |
-40 to 85 |
2.25 | 1ku |
WQFN (RUY) | 28 |
250 | SMALL T&R |
|
TPS61195 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 |
| TPS61195RUYR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61195RUYR |
TPS61195RUYR |
| TPS61195RUYT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61195RUYT |
TPS61195RUYT |
TPS61195 应用技术支持与电子电路设计开发资源下载
- TPS61195 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)
TPS61195 相关工具