TPS61183 具有 PWM 接口和可编程 PWM 明暗调节的、用于笔记本电脑的 WLED 驱动器
TPS61183 描述
The TPS61183 IC provides a highly integrated WLED driver solution for notebook LCD backlight. This device has a built-in high efficiency boost regulator with integrated 2.0A/40V power MOSFET. The six current sink regulators provide high precision current regulation and matching. In total, the device can support up to 60 WLEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to optimize efficiency.
The TPS61183 supports the programmable brightness dimming method. In this configuration, the dimming duty cycle of the WLED current is controlled by the input PWM signal but the dimming frequency is fixed and set by an external resistor. During direct PWM dimming, the WLED current completely synchronized with the input PWM signal’s duty cycle and frequency
|
TPS61183 |
| Topology |
Boost |
| Type |
Inductive |
| Vin(Min)(V) |
4.5 |
| Vin(Max)(V) |
24 |
| Switch Current Limit(Typ)(A) |
2.5 |
| Output Voltage(Max)(V) |
38 |
| Switching Frequency(Max)(kHz) |
1200 |
| LED(#) |
60 |
| LED Configuration |
Series |
| Over-Voltage Protection(Min)(V) |
38 |
| Peak Efficiency(%) |
94 |
| Operating Temperature Range(°C) |
-40 to 85 |
| Pin/Package |
20QFN |
TPS61183 特性
- 4.5 V to 24 V Input Voltage
- 38 V Maximum Output Voltage
- Integrated 2.0 A 40 V MOSFET
- 300 kHz to 1 MHz Programmable Switching Frequency
- Adaptive Boost Output to WLED Voltages
- Wide PWM Dimming Frequency Range
- 100 Hz to 50 KHz for Direct PWM Mode
- 100 Hz to 22 KHz for Frequency Programmable Mode
- 100:1 Dimming Ratio at 20 kHz
- 10000:1 Dimming Ratio at 200 Hz (Direct PWM mode)
- Small External Components
- Integrated Loop Compensation
- Six Current Sinks of 30 mA Max
- 1.5% (Typ) Current Matching
- PWM Brightness Interface Control
- PWM Programmable Mode Brightness Dimming Method
or Direct PWM Dimming Method
- 4 kV HBM ESD Protection
- Programmable Over Voltage Threshold
- Built-in WLED Open/Short Protection
- Thermal Shutdown
TPS61183 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 |
| TPS61183RTJR |
ACTIVE |
-40 to 85 |
1.85 | 1ku |
QFN (RTJ) | 20 |
3000 | LARGE T&R |
|
| TPS61183RTJT |
ACTIVE |
-40 to 85 |
2.25 | 1ku |
QFN (RTJ) | 20 |
250 | SMALL T&R |
|
TPS61183 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 |
| TPS61183RTJR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61183RTJR |
TPS61183RTJR |
| TPS61183RTJT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61183RTJT |
TPS61183RTJT |
TPS61183 应用技术支持与电子电路设计开发资源下载
- TPS61183 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)
TPS61183 相关工具