描述 Description

The NCP1370 is a PWM current mode controller targeting isolated
flyback and non?isolated constant current topologies. The controller
operates in a quasi?resonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to precisely regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, biasing and an opto?coupler.
The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
the design. This device supports analog/digital dimming and both
modes can be combined to enhance dimming precision. The NCP1370
has a programmable peak current limit to optimize design
compatibility over a wide range of applications. The controller
features a standby mode with reduced current consumption.

特性 Features

? Accurate Primary Side Sensing
? No opto coupler needed & Current regulation within ± 1%
? Quasi?resonant Peak Current?mode Control Operation
? High efficiency
? Line Feed?forward
? Improved regulation accuracy
? Programmable Cycle?by?Cycle Peak Current Limit
? Improved driver reliability
? Analog and/or PWM dimming
? Increased flexibility for different TV LED dimming technique's
? Secondary Diode Short Protection
? Avoids overheating in fault condition
? VCC Undervoltage and overvoltage protection
? Robust fault handling
? Open and Shorted Output LED Protection
? Robust fault handling of common LED system faults
? Brown?out
? Robust protection in case of low Ac mains

應(yīng)用 Application

? LED TV's Backlight Controller
? LED TV's
? LED Power supply
? LED Light Engines

簡(jiǎn)介

NCP1370屬于集成電路（IC）的LED驅(qū)動(dòng)器。由制造生產(chǎn)的NCP1370LED 驅(qū)動(dòng)器器件屬于 LED 驅(qū)動(dòng)器電源管理集成電路 (PMIC) 系列，可通過(guò)標(biāo)稱固定電壓的電源為負(fù)載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通常可對(duì)器件工作點(diǎn)進(jìn)行外部控制，可在照明應(yīng)用中用于實(shí)現(xiàn)調(diào)光功能。