TPS60252 具有 I2C 接口的用于 7 个 WLED 的高效充电泵
TPS60252 描述
The TPS60250/2 are high efficiency, constant frequency charge pump DC/DC converters that use dual mode 1× and 1.5× conversions to maximize efficiency over the input voltage range. The devices drive up to five white LEDs for the main display and up to two white LEDs for the sub display with regulated constant current for uniform intensity. By utilizing adaptive 1×/1.5× charge pump modes and very low-dropout current regulators, the TPS60250/2 achieve high efficiency over the full 1-cell lithium-battery input voltage range.
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) |
TPS60252 特性
- 3.0 V to 6.0 V Input Voltage Range
- ×1 and ×1.5 Charge Pump
- Fully Programmable Current with I2C
- 64 Dimming Steps with 25mA Maximum (Sub and Main Display Banks)
- 4 Dimming Steps with 80mA Maximum (DM5 for Auxiliary Application)
- 2% Current Matching for Sub LEDs at Light Load Condition (Each 100uA)
- 750 kHz Charge Pump Frequency
- Continuous 230mA Maximum Output Current
- Auto Switching Between ×1 and ×1.5 Mode for Maximum Efficiency
- Built-in Soft Start and Current Limit
- Open Lamp Detection
- 16-Pin 3mm x 3mm QFN
- TPS60250 (I2C Slave Address: 1110111)
- TPS60252 (I2C Slave Address: 1110110)
- APPLICATIONS
- Cellular Phones
- PDA, PMP, GPS (Up To 4 Inch LCD Display)
- Multidisplay Handheld Devices
TPS60252 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 |
| TPS60252RTER |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
BSR |
| TPS60252RTERG4 |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
WQFN (RTE) | 16 |
3000 | LARGE T&R |
BSR |
| TPS60252RTET |
ACTIVE |
-40 to 85 |
1.55 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
BSR |
| TPS60252RTETG4 |
ACTIVE |
-40 to 85 |
1.55 | 1ku |
WQFN (RTE) | 16 |
250 | SMALL T&R |
BSR |
TPS60252 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 |
| TPS60252RTER |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS60252RTER |
| TPS60252RTERG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60252RTERG4 |
TPS60252RTERG4 |
| TPS60252RTET |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS60252RTET |
| TPS60252RTETG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60252RTETG4 |
TPS60252RTETG4 |
TPS60252 应用技术支持与电子电路设计开发资源下载
- TPS60252 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)
TPS60252 相关工具