STCF07中文资料High buck-boost power white LED driver数据手册ST规格书

描述 Description

The STCF07 is a dedicated, size-optimized solution for driving a power LED. The device is a buck-boost converter which guarantees proper LED current control over all possible battery voltage and LED forward voltage conditions. The output current control ensures good current regulation over the forward voltage spread characteristics of high-brightness LEDs. The device includes various functions to protect the chip and the power LEDs. These include soft-start control as well as detection and protection of chip overtemperature and shorted LEDs. An optional external NTC is supported to protect the LEDs against overheating. It is possible to separately program the current intensity in HIGH and LOW mode using the SEL pin. The device is housed in a 16-lead QFN16 (4 x 4 mm) package with a height less than 1 mm.

特性 Features

Buck-boost DC-DC converter
Drives one power LED up to 1 A in flash mode
Drives one power LED up to 800 mA in continuous mode
LED temperature protection
Output current control
1.8 MHz (typ.) fixed frequency PWM
Synchronous rectification
High efficiency across the total input voltage range
Operational modes:Shutdown mode
High current mode: up to 1 A
Low current mode: from 20 mA

Adjustable current in both modes
Peak inductor limited to 2.3 A (typ.)
LED disconnected from the battery in shutdown mode
NTC LED temperature protection
Overvoltage protection: 5.3 V
Short-circuit protection
Overtemperature protection
ULVLO function
1 μA max shutdown current
QFN16 (4 x 4 x 1 mm) 16 leads

简介

STCF07属于集成电路（IC）的LED驱动器。由制造生产的STCF07LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。