ADP2386 20 V, 6 A, Synchronous Step-Down DC-to-DC Regulator

The ADP2386 is a synchronous step-down, dc-to-dc regulator with an integrated 44 mΩ, high-side power MOSFET and an 11 mΩ, synchronous rectifier MOSFET to provide a high efficiency solution in a compact 4 mm × 4 mm LFCSP package. This device uses a peak current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The switching frequency of the ADP2386 can be programmed between 200 kHz to 1.4 MHz. To minimize system noise, the synchronization function allows the switching frequency to be synchronized to an external clock.

The ADP2386 requires minimal external components and operates from an input voltage of 4.5 V to 20 V. The output voltage can be adjusted from 0.6 V to 90% of the input voltage and delivers up to 6 A of continuous current. Each IC draws less than 110 μA current from the input source when it is disabled.

This regulator targets high performance applications that require high efficiency and design flexibility. External compensation and an adjustable soft start function provide design flexibility. The power-good output and precision enable input provide simple and reliable power sequencing.

Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP) and thermal shutdown (TSD).

The ADP2386 operates over the −40°C to +125°C junction temperature range and is available in a 24-lead, 4 mm × 4 mm LFCSP package.

Applications

Communications infrastructure
Networking and servers
Industrial and instrumentation
Healthcare and medical
Intermediate power rail conversion
DC-to-dc point-of-load applications

Features and Benefits

Input voltage: 4.5 V to 20 V

Integrated MOSFET: 44 mΩ/11 mΩ

Reference voltage: 0.6 V ± 1%

Continuous output current: 6 A

Programmable switching frequency: 200 kHz to 1.4 MHz

Synchronizes to external clock: 200 kHz to 1.4 MHz

180° out of phase clock synchronization

Precision enable and power good

External compensation

Internal soft start with external adjustable option

Startup into a precharged output

Supported by ADIsimPower design tool

Power Management

Switching Regulators

Building Technology

LED General Lighting

Design Tools

Data Sheets

Document	note
ADP2386: 20 V, 6 A, Synchronous Step-Down DC-to-DC Regulator Data Sheet (Rev. C)	PDF 615 kB

Application Notes

Document	note
AN-1168: Designing an Inverting Power Supply Using the ADP2384/ADP2386 Synchronous Step-Down DC-to-DC Regulators (Rev. 0)	PDF 193 kB

User Guides

Document	note
UG-466: Evaluation Board for the ADP2384/ADP2386, 20 V, 4 A/6 A Synchronous Step-Down DC-to-DC Regulators	PDF 878 kB
UG-525: Inverting Buck-Boost Evaluation Board for the ADP2386, 20 V, 6 A Synchronous Step-Down DC-to-DC Regulator	PDF 515 kB