TPS61181 适用于笔记本电脑的 1.5A 白光 LED 驱动器
TPS61181 描述
The TPS61180/1/2 ICs provide highly integrated solutions for media size LCD backlight. These devices have a built-in high efficiency boost regulator with integrated 1.5A/40V power MOSFET. The six current sink regulators provide high precision current regulation and matching. In total, the device can support up to 60 WLED. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.
The devices support pulse width modulation (PWM) brightness dimming. During dimming, the WLED current is turned on/off at the duty cycle and frequency determined by the PWM signal input on the DCRTL pin. One potential issue of PWM dimming is audible noises from the output ceramic capacitors.
|
TPS61180 |
TPS61181 |
TPS61182 |
| Topology |
Boost |
Boost |
Boost |
| Type |
Inductive |
Inductive |
Inductive |
| Vin(Min)(V) |
5 |
5 |
5 |
| Vin(Max)(V) |
24 |
24 |
24 |
| Switch Current Limit(Typ)(A) |
2 |
2 |
2 |
| Output Voltage(Max)(V) |
39 |
39 |
39 |
| Switching Frequency(Max)(kHz) |
1000 |
1000 |
1300 |
| LED(#) |
10 |
10 |
10 |
| LED Configuration |
Series |
Series |
Series |
| Over-Voltage Protection(Min)(V) |
38 |
38 |
38 |
| Peak Efficiency(%) |
90 |
90 |
90 |
| Iq(Typ)(mA) |
2 |
2 |
2 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
16WQFN |
16WQFN |
16WQFN |
| Iout(Max)(A) |
1.5 |
1.5 |
1.5 |
TPS61181 特性
- 5 V to 24 V Input Voltage
- Integrated 1.5 A 40 V MOSFET
- 1.0 MHz/1.3 MHz Switching Frequency
- Boost Output Auto-Adaptive to WLED Voltages
- Small External Components
- Integrated Loop Compensation
- Six Current Sink of 25 mA
- Up to 10 WLED in Series
- Less Than 3% Current Matching and Accuracy
- Up to 1000:1 PWM Brightness DImming Range
- Minimized Output Ripple Under PWM Dimming
- Driver for Input/Output Isolation PFET
- True Shutdown
- Over Voltage Protection
- WLED Open/Short Protection
- Built-in Soft Start
- 16L 3 mm×3 mm QFN
- APPLICATIONS
- Notebook LCD Display Backlight
- UMPC LCD Display Backlight
TPS61181 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 |
| TPS61181RTER |
ACTIVE |
-40 to 85 |
1.65 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
CCG |
| TPS61181RTERG4 |
ACTIVE |
-40 to 85 |
1.65 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
CCG |
| TPS61181RTET |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
CCG |
| TPS61181RTETG4 |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
CCG |
TPS61181 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 |
| TPS61181RTER |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61181RTER |
TPS61181RTER |
| TPS61181RTERG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61181RTERG4 |
TPS61181RTERG4 |
| TPS61181RTET |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61181RTET |
TPS61181RTET |
| TPS61181RTETG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61181RTETG4 |
TPS61181RTETG4 |
TPS61181 应用技术支持与电子电路设计开发资源下载
- TPS61181 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)
TPS61181 相关工具