Linear Technology has announced the LT3932, a monolithic, synchronous, step-down DC-DC converter with internal 36V, 2A power switches and an internal PWM generator.
Its fixed frequency, peak current mode control accurately regulates current within ±1.5% for strings of up to 2A LEDs. Its integrated PWM generator offers a 128:1 dimming ratio. The device’s 3.6V to 36V input voltage range is ideal for a wide variety of applications, including automotive, industrial and architectural lighting.
The combination of its Silent Switcher topology and spread spectrum frequency modulation minimizes EMI concerns.
The device can drive up to eight 2A white LEDs from a nominal 32V input, delivering in excess of 50 watts.
