Switching regulators enable high-density point-of-load designs

Analog Devices Inc. (ADI) introduces the ADP2119 and ADP2120 dc-to-dc switching regulators. The highly integrated 2 A/1.25 A, step-down, dc-to-dc synchronous regulators include low on-resistance switching FETs (field-effect transistors) that deliver power conversion efficiencies up to 93%.

Internal loop compensation and integrated soft-start circuitry are also featured and enable high-density solutions for point-of-load applications. The ADP2119 and ADP2120 accommodate a diversity of point-of-load applications with a 1.2-MHz fixed switching frequency and a wide 2.3 to 5.5 V operating range. Output voltage is adjustable from 0.6 V to input voltage (VIN), and available in preset output voltage options of 3.3, 2.5, 1.8, 1.5, 1.2, and 1.0 V. The ADP2119 and ADP2120 regulators are available in small 3 x 3 mm LFCSP (lead-frame chip-scale package) packages.

ADP2119 and ADP2120 features and benefits:

• Current-mode, fixed-frequency PWM (pulse-width modulation) architecture provides excellent stability and transient response
• Power-good output, precision-enable, and voltage tracking features enable a simple and reliable start-up sequence
• Regulators can be synchronized to eliminate beat frequencies between converters and remove the possibility of audible system noise
• OVP (over-voltage protection), OCP (over-current protection), UVLO (under-voltage lockout), and TSD (thermal shutdown) enhance system reliability and protection.