描述 Description

The MP24830 is a 90V white LED driver suitable for either step-down or inverting step up/down applications. It supports a wide input range with excellent load and line regulation. Its programmable current limit provides customized applications with a wide power range. Current mode operation provides a fast transient response and eases loop stabilization. Fault condition protection includes thermal shutdown, cycle?y?ycle peak-current limiting, open-string protection, and output short-circuit protection.?The MP24830 incorporates both DC and PWM dimming onto a single control pin. The separate input reference ground pin allows for direct enable and/or dimming control for a positive-to-negative power conversion.? The MP24830 requires a minimal number of readily-available external components. It is available in 14-pin SOIC and QFN packages.

特性 Features

● Programmable Maximum Output Current
● Unique Step-Up/Down Operation (Buck-Boost Mode)
● Wide 4.5V-to-90V Operating Input Range for Step-Down Applications (Buck Mode)
● Adjustable Switching Frequency
● Analog and PWM Dimming
● 0.2V Reference Voltage
● 10? Shutdown Mode
● No Minimum LED Quantity Required
● Stable with Low ESR Output Ceramic Capacitors
● Cycle-by-Cycle Over-Current Protection
● Thermal Shutdown Protection
● Open-String Protection
● Output Short-Circuit Protection
● Available in 14-Pin SOIC and QFN Packages

簡介

MP24830屬于集成電路（IC）的LED驅(qū)動器。由制造生產(chǎn)的MP24830LED 驅(qū)動器器件屬于 LED 驅(qū)動器電源管理集成電路 (PMIC) 系列，可通過標稱固定電壓的電源為負載（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?？蓪ζ骷ぷ鼽c進行外部控制，可在照明應用中用于實現(xiàn)調(diào)光功能。