TPS60255 - 用于 LED 背光的 7 通道 175mA 高效充电泵

TPS60255是TI德州仪器公司的一款背光产品，TPS60255是用于 LED 背光的 7 通道 175mA 高效充电泵，本站介绍了TPS60255的封装应用图解、特点和优点、功能等，并给出了与TPS60255相关的TI元器件型号供参考。

TPS60255 - 用于 LED 背光的 7 通道 175mA 高效充电泵 - 背光 - LED驱动器 - 德州仪器

产品描述

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™). This offers flexible applications for a variety of lighting control in portable devices.

产品特性

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

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