Analog Devices introduced the ADP2441, a 36 V, 1 A step-down regulator integrating both low-on-resistance and high-side and low-side power switches to provide compact point-of-load design and more than 94% efficiency.
Under light load conditions, the IC will automatically operate in PSM (pulse-skip mode) to reduce switching losses and improve energy efficiency.
The device supports a wide input range from 4,5 V to 36 V to accommodate a diversity of point-of-load applications including industrial and communication equipment and healthcare electronics. Output voltage is adjustable from 0,6 V to 90% of input voltage.
The new regulator also offers low minimum on-time of 50 ns, saving board space and cost through its suitability for single-stage, high-input to low-output power conversion.
By using a current-mode constant frequency PWM (pulse-width modulation) control scheme, the ADP2441 offers excellent stability and transient response to minimise output voltage ripple. The switching frequency of the regulator can be adjusted from 300 kHz to 1 MHz.
The chip offers precision enable, voltage tracking and power-good features to enable a simple and reliable startup sequence. System reliability and protection are enhanced further through over-current protection, under-voltage lockout and thermal shutdown. Operating over the -40°C to +125°C junction temperature range, the ADP2441 is available in a 3 x 3 mm 12-lead LFCSP package.
Analog Devices’ integrated power management switching regulators are also supported by the ADIsimPower design tools, which simplify selecting components, simulating power supply performance and building evaluation circuits.
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