TPS60231 采用 3x3 QFN 封装、用于 LED 背光的 3 通道、稳定电流为 75mA 的充电泵
TPS60231 描述
The TPS60231 charge pump is optimized for white LED supplies in color display backlight applications. The device provides a constant current for each LED, which the initial value can be set by an external resistor. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or alkaline battery cells. Over an input voltage range from 3.1 V to 6.5 V, the device provides a high output current of up to 25 mA per LED with a total of 75 mA. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combination with very low dropout current sources. In addition, the current controlled charge pump ensures low input current ripple and EMI.
|
TPS60230 |
TPS60231 |
| Iout(Max)(A) |
0.125 |
0.075 |
| Iq(Typ)(mA) |
0.16 |
0.2 |
| Vin(Min)(V) |
2.7 |
2.7 |
| Vin(Max)(V) |
6.5 |
6.5 |
| Preset Vout(V) |
5.5 |
5.5 |
| Switching Frequency(Max)(kHz) |
1250 |
1250 |
| Efficiency(Typ)(%) |
90 |
90 |
| Topology |
Boost |
Boost |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
| Pin/Package |
16QFN |
16QFN |
| Regulated Outputs(#) |
1 |
1 |
TPS60231 特性
- Regulated Output Current With 0.4% Matching
- Drives up to 3 LEDs at 25 mA Each
- LED Brightness Control Through PWM Control Signal
- High Efficiency by Fractional Conversion With 1x and 1.5x Modes
- 1 MHz Switching Frequency
- 2.7 V to 6.5 V Operating Input Voltage Range
- Internal Softstart Limits Inrush Current
- Low Input Ripple and Low EMI
- Overcurrent and Overtemperature Protected
- Undervoltage Lockout With Hysteresis
- Ultra-Small 3mm x 3mm QFN Package
- APPLICATIONS
- White LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and Camcorders
- Keypad Backlight
TPS60231 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 |
| TPS60231RGTR |
ACTIVE |
-40 to 85 |
0.60 | 1ku |
QFN (RGT) | 16 |
3000 | LARGE T&R |
BIZ |
| TPS60231RGTRG4 |
ACTIVE |
-40 to 85 |
0.60 | 1ku |
QFN (RGT) | 16 |
3000 | LARGE T&R |
BIZ |
| TPS60231RGTT |
ACTIVE |
-40 to 85 |
0.65 | 1ku |
QFN (RGT) | 16 |
250 | SMALL T&R |
BIZ |
| TPS60231RGTTG4 |
ACTIVE |
-40 to 85 |
0.65 | 1ku |
QFN (RGT) | 16 |
250 | SMALL T&R |
BIZ |
TPS60231 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 |
| TPS60231RGTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS60231RGTR |
| TPS60231RGTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60231RGTRG4 |
TPS60231RGTRG4 |
| TPS60231RGTT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS60231RGTT |
| TPS60231RGTTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS60231RGTTG4 |
TPS60231RGTTG4 |
TPS60231 应用技术支持与电子电路设计开发资源下载
- TPS60231 数据资料 dataSheet 下载.PDF
- TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Understanding Boost Power Stages In Switchmode Power Supplies
(PDF 149 KB)
- Understanding Buck Power Stages In Switchmode Power Supplies
(PDF 173 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)
TPS60231 相关工具
TPS60231 参考设计
| 说明 |
型号 |
公司 |
| Spartan™-3 电源管理解决方案（设计 1） |
PR213 |
Texas Instruments |
| Spartan™-II 电源管理解决方案（设计 3） |
PR211 |
Texas Instruments |
| Spartan™-IIE 电源管理解决方案（设计 3） |
PR212 |
Texas Instruments |
