AT9917

Automotive LED Driver IC w/ High Current Accuracy; Switch mode controller for boost, SEPIC & buck converters\nClosed loop control of output current\nHigh PWM dimming ratio\nInternal 40V linear regulator\nInternal 3% voltage reference \nConstant frequency operation with programmable slope compensation\nLinear and PWM dimming\nProgrammable jitter to reduce EMI\n+/-1.0A MOSFET gate driver\nOutput short circuit protection\nOutput over voltage protection\nProgrammable hiccup timer\nTemperature fold-back with external NTC resistor\nSoft start\nMeets AEC-Q100 requirements;

The AT9917 is an advanced fixed frequency PWM IC designed to control single-switch, boost, SEPIC, and buck LED drivers in a constant current mode. The controller uses a peak current-mode control scheme (with programmable slope compensation) and includes an internal transconductance amplifier to control the output current with high accuracy. The IC includes a +/-1A gate driver that makes the AT9917 suitable for high power applications. An internal 40V linear regulator powers the IC eliminating the need for a separate power supply for the IC. The IC provides a FAULT output, which can be used to disconnect the LEDs in case of a fault condition (such as an alternator load dump in automobiles) using an external disconnect FET. AT9917 also provides a TTL compatible, low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to several kilohertz. Temperature foldback of the output current is possible, using an external NTC resistor.The AT9917-based LED driver is suited for automotive LED driver applications. The AT9917 based LED lamp drivers can achieve efficiencies in excess of 90% when buck or boost topologies are used.

AT9917

Automotive LED Driver IC with High Current Accuracy

AT9917TS-G

Automotive LED Driver IC with High Current Accuracy

AT9917TS-G

Package：24-TSSOP（0.173"，4.40mm 寬）；包裝：卷帶（TR） 類別：集成電路（IC） LED 驅(qū)動(dòng)器 描述：IC LED DRIVER CTRLR PWM 24TSSOP

AT9917TS-GVAO

包裝：卷帶（TR）剪切帶（CT）Digi-Reel? 得捷定制卷帶 類別：集成電路（IC） LED 驅(qū)動(dòng)器 描述：AUTOMOTIVE LED DRIVER IC