Step-down DC-DC synchronous regulator enabling high-density POL design with high integration rate
- ADI's new ADP2119 and ADP2120 5V 2A/1.25A switching regulators,
Provides up to 93% power conversion efficiency

Analog Devices announced DC-DC synchronous regulators (ADP2119, ADP2120) boasting a high integration rate.

ADI's new step-down DC-DC synchronous regulator includes low-on-resistance switching FETs (Field-Effect Transistors) to provide power conversion efficiency of up to 93%. In addition, internal loop compensation and an integrated soft-start circuit are integrated, enabling the implementation of a highly integrated solution for Point-of-Load (POL) applications.

The ADP2119 and ADP2120 can be utilized in various POL applications based on a fixed frequency of 1.2 MHz and a wide operating range of 2.3 V to 5.5 V. The output voltage is provided with preset output voltage options of 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V, and the output voltage is adjustable from 0.6 V to the input voltage (VIN). The ADP2119 and ADP2120 regulators are supplied in a small 3 mm x 3 mm LFCSP (Lead-Frame Chip-Scale Package) package.

Martin Ng, Marketing Director at Analog Devices, stated, “Design engineers looking to more economically replace low-efficiency low-voltage drop regulators will be able to very easily utilize the ADP2119 and ADP2120 regulators in the online ADIsimPower™ design tool,” adding, “ADI’s goal is to solve customers’ power management problems by providing products that reduce space and shorten time-to-market.”

Specifications and Benefits of ADP2119 and ADP2120 DC-DC Switching Regulators
• Provides excellent stability and transient response characteristics with a current mode fixed-frequency pulse-width modulation (PWM) architecture
• Implements a simple and reliable startup sequence through Power-Good output, Precision-Enable, and voltage tracking specifications.
• Eliminates beat frequency between converters and the potential for audible system noise through regulator synchronization
• Enhanced system stability and protection levels through Over-Voltage Protection (OVP), Over-Current Protection (OCP), Under-Voltage Lockout (UVLO), and Thermal Shutdown (TSD).