The 20V 1.2A step-down, dc-to-dc switching regulators integrate a high-side MOSFET that delivers power conversion efficiencies greater than 90 percent. The regulators also feature internal loop compensation, integrated soft-start circuitry and bootstrap diodes to enable high-density products for intermediate bus generation and point-of-load regulation. The ADP2300 and ADP2301 are available in small TSOT packages.

The ADP2300 and ADP2301 support a wide input voltage range from 3 V to 20 V to accommodate a diversity of point-of-load applications, including consumer electronics and industrial and communications infrastructure equipment. This output voltage is adjustable from 0.8 V to 90 percent of input voltage (VIN).

The regulators' current-mode, fixed-frequency PWM (pulse-width modulation) architecture provides high stability and transient response. Under light loads, the regulators automatically operate in PFM (pulse frequency modulation) to reduce light load losses. A precision enable pin allows the regulator to be turned on at a precise input voltage for sequencing of multiple devices. System reliability and protection are enhanced further through OCP (overcurrent protection), UVLO (undervoltage lockout) and TSD (thermal shutdown).

Pricing: $1.01 each in 100,000-unit quantities.
Availability: Now.
Datasheets: ADP2300 and ADP2301.

Analog Devices, www.analog.com