TPS60255 用于 LED 背光的 7 通道 175mA 高效充电泵
TPS60255 描述
The TPS60255 is a high-efficiency, constant frequency charge pump DC/DC converter that uses 1× and 1.5× conversion to maximize efficiency for the input voltage range. By using adaptive 1×/1.5× charge-pump modes and very low dropout current regulators, the TPS60255 achieves high efficiency for the entire one-cell lithium battery range. The protection features include soft start, over-current limit, thermal shut down, and over-voltage detection. The device automatically detects and removes unused current sinks from the control loop.
This device drives six 25 mA current sinks and one 80 mA current sink. These current regulators are programmed by three independent brightness registers and five ON/OFF bits using a single-wire interface (EasyScale™).
Four enable inputs, ENmain, ENsub1, ENsub2, and ENaux, available through the I2C, are used for simple on/off controls for the independent main, sub1, sub2, and DM5 displays, respectively
|
TPS60250 |
TPS60251 |
TPS60252 |
TPS60255 |
| Topology |
Boost |
Boost |
Boost |
Boost |
| Type |
Capacitive |
Capacitive |
Capacitive |
Capacitive |
| Vin(Min)(V) |
3 |
3 |
3 |
2.7 |
| Vin(Max)(V) |
6 |
6 |
6 |
6 |
| Output Voltage(Max)(V) |
6.5 |
6.5 |
6.5 |
6.6 |
| Switching Frequency(Max)(kHz) |
750 |
750 |
750 |
750 |
| LED(#) |
4+2+1 |
4+2+1 |
4+2+1 |
4+2+1 |
| LED Configuration |
Parallel |
Parallel |
Parallel |
Parallel |
| Peak Efficiency(%) |
93 |
93 |
93 |
93 |
| Iq(Typ)(mA) |
0.068 |
0.068 |
0.068 |
0.068 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
16WQFN |
24QFN |
16WQFN |
16WQFN |
| Iout(Max)(A) |
0.23 |
0.23 |
0.23 |
0.23 |
| I2C Address |
1110111 |
1110111 |
1110110 |
EasyScale(TM) |
TPS60255 特性
- 2.7 V to 6.0 V Input Voltage Range
- 1× and 1.5× Charge Pump
- Auto Switching Between 1× and 1.5× Modes
- 750 kHz Charge Pump Frequency
- Seven Individually-regulated WLED Current Sinks
- Single- Wire Interface for Dimming and ON/OFF Control
- 25 mA max LED Current for Six Current Sinks
- One 80 mA Current Sink
- Open WLED Detection
- Built-in Soft Start and Current Limit
- 16-pin, 3 mm × 3 mm QFN Package
- APPLICATIONS
- Cellular Phones
- Portable Navigation Displays
- Multi-display Handheld Devices
TPS60255 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 |
| TPS60255RTER |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
BSR |
| TPS60255RTERG4 |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
BSR |
| TPS60255RTET |
ACTIVE |
-40 to 85 |
1.55 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
BSR |
| TPS60255RTETG4 |
ACTIVE |
-40 to 85 |
1.55 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
BSR |
TPS60255 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 |
| TPS60255RTER |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60255RTER |
TPS60255RTER |
| TPS60255RTERG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60255RTERG4 |
TPS60255RTERG4 |
| TPS60255RTET |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60255RTET |
TPS60255RTET |
| TPS60255RTETG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60255RTETG4 |
TPS60255RTETG4 |
TPS60255 应用技术支持与电子电路设计开发资源下载
- TPS60255 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)
- PowerPAD™ 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)
TPS60255 相关工具
