Electronic Drivers

Electronic Drivers

LED Driver ICs enhance edge- and direct-lit LCD TVs.

Available in 0.5 mm pitch QFN and 0.8 mm pitch LQFP packages, 16-channel AS3820 and 12-channel AS3821 offer ±0.2% channel-to-channel accuracy for optimal light uniformity and picture quality. ICs can be used for driving external power MOSFETs or, due to base current error compensation, low beta bipolar transistors. Products are programmable via SPI port and provide built-in safety features,...

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Six-Channel LED Driver delivers robust fault protection.
Electronic Drivers

Six-Channel LED Driver delivers robust fault protection.

Providing protection from faulty LED strings, HV9957 combines switch-mode boost converter and 6 low dropout, linear current regulators to deliver efficiency and precise current control. Temperature-triggered fault protection and outlier approach are used to identify faulty strings, which are turned off only when absolutely necessary. Remaining strings continue normal operation. RoHS-compliant IC...

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Multi-String LED Drivers promote power efficiency for displays.
Electronic Drivers

Multi-String LED Drivers promote power efficiency for displays.

Intelligent multi-string LED drivers use efficiency optimizer (EO) technology to decrease power consumption to lowest practical level. Capabilities enable LCD TVs to achieve 10M:1 dynamic contrast and minimal motion-blur. ICs also provide over 10,000:1 PWM dimming range for PC monitors and industrial displays. In solid state lighting applications, ICs and MCUs allow dynamic white-point setting,...

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Electronic Drivers

Half-Bridge Gate Driver IC supports GaN power FETs.

Optimized for use with enhancement-mode GaN power FETs in high-voltage power converters, 100 V Model LM5113 regulates high side floating bootstrap capacitor voltage at approximately 5.25 V. Device features independent sink and source outputs for flexibility of turn-on strength with respect to turn-off strength. Low impedance pull down path of 0.5 W provides reliable turn-off mechanism. Housed in...

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Half-Bridge Gate Driver IC reduces component count, PCB area.
Electronic Drivers

Half-Bridge Gate Driver IC reduces component count, PCB area.

Supplied in 10-pin, 4 x 4 mm LLP, LM5113 high- and low-side GaN FET driver lends to density of power brick and communications infrastructure equipment. This 100 V bridge driver IC regulates high side floating bootstrap capacitor voltage at ~5.25 V to drive enhancement-mode Gallium-Nitride (GaN) power FETs without exceeding max gate-source voltage rating. Other features include independent sink...

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LED Backlight Driver IC meets needs of medium/large displays.
Electronic Drivers

LED Backlight Driver IC meets needs of medium/large displays.

Suited for backlighting LCD monitors and TVs, A8516 WLED/RGB driver helps designers reduce component count by integrating boost controller to drive external MOSFET and 6 internal current sink channels capable of up to 80 mA each. Channels can be combined to achieve higher currents, and boost converter operates in constant frequency (programmable) current mode control. LED sink current is set by...

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Electronic Drivers

RGB LED Driver targets portable projectors.

Accepting 2.7-5.5 V input voltage, 2 A Model LM3435 drives 3 common anode RGB high-brightness LEDs sequentially with single inductor, powering one after another at 60 Hz and above to match LCoS or DLP devices. Switching-mode, constant current regulator integrates all active components, including N-Channel main MOSFET, P-Channel synchronous MOSFET, and 3 N-channel pass switches. Level of current...

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Single-Inductor, 2 A RGB LED Driver suits portable projectors.
Electronic Drivers

Single-Inductor, 2 A RGB LED Driver suits portable projectors.

Supplied in 40-pin thermally enhanced LLP, LM3435 drives 3 common anode RGB high-brightness LEDs sequentially with one inductor. LEDs are powered one after another at 60 Hz and above to match operation requirements of liquid crystal on silicone (LCoS) or digital light processing (DLP) image devices. Along with I-²C control interface, this switching-mode constant current regulator integrates all...

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Electronic Drivers

White LED Driver features automatic phase shifting.

Suited for LCD backlighting in tablet computers, Model AAT1451 drives up to 4 LED strings at up to 93% efficiency. Device uses 32 kHz PWM operating frequency to ensure silent operation and has switching frequency of 600 kHz to 1 MHz. To ensure accurate backlight color temperature and uniform brightness, driver has 4 current sinks that are programmable up to 30 mA per string at ±2% accuracy with...

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Electronic Drivers

Linear LED Driver facilitates area-lighting design.

Integrating 70 V, 1.5 A N-channel MOSFET and featuring input range of 6-70 V, Model LM3466 uses 1 resistor and 1 capacitor to drive LED string from any AC/DC constant-current power supply. Dynamic current equalizing control scheme enables communication between each LED driver to divide current amongst multiple active LED strings. During open string state, each LM3466 automatically equalizes...

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