描述 Description

The TLD1211SJ is an integrated adjustable constant current source realized in a bipolar IC technology. The IC is designed to supply LEDs under the severe conditions of automotive applications resulting in constant brightness and extended LED lifetime. The TLD1211SJ is capable to drive high current, high brightness LEDs up to 2.5 A by using additional external output stages as “booster“ transistors. For LED currents up to 85mA the IC can be used as a stand alone device and requires only one voltage sense resistor as an external component. Protection circuits prevent damage to the device in case of overload, short circuit, over voltage, and overtemperature. Furthermore, the temperature dependent current reduction is able to protect LEDs which are thermally coupled to the IC. The integrated EN input of the TLD1211SJ enables LED brightness control by pulse width modulation.

特性 Features

? Adjustable Constant Output Current up to 85 mA
? LED Current of 2.5 A possible by using external Power Transistors
? Voltage Drop across Sense Resistor typ. 0.15 V
? Internal Bandgap Voltage Reference enables High Output Current accuracy
? EN Input for PWM brightness control
? Overvoltage Protection
? Temperature dependent Output Current Reduction
? Very Low Standby Current
? Maximum Operating Voltage 28 V
? Small SMD Package
? Green Product (RoHS compliant)
? AEC Qualified

優(yōu)勢(shì):
? LED Controller for Automotive applications, Low- and High-Power LED
? Universal Constant Current Source
? Interior and Exterior Lighting
? Instrument backlighting
? Illumination

簡(jiǎn)介

TLD1211SJ屬于集成電路（IC）的LED驅(qū)動(dòng)器。由制造生產(chǎn)的TLD1211SJLED 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(chēng)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(lèi)似產(chǎn)品的主要區(qū)別在于，這類(lèi)器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通?？蓪?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。