ADP2387 20 V, 6 A, Synchronous, Step-Down DC-to-DC Regulator

The ADP2387 is a synchronous step-down, dc-to-dc regulator with an integrated 44 mΩ, high-side power, metal oxide semiconductor field effect transistor (MOSFET) and an 11 mΩ, synchronous rectifier MOSFET to provide a high efficiency solution in a compact 4 mm × 4 mm LFCSP. 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 ADP2387 can be programmed between 200 kHz to 1400 kHz.

The ADP2387 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. The programmable current-limit function allows the inductor to be optimized by output current.

Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP), and thermal shutdown (TSD). The ADP2387 operates over the −40°C to +125°C junction temperature range and is available in a 24-lead, 4 mm × 4 mm LFCSP.

Applications

Features and Benefits

Input voltage range: 4.5 V to 20 V

Integrated MOSFET: 44 mΩ typical/11 mΩ typical

Reference voltage: 0.6 V ± 1%

Continuous output current: 6 A

Programmable current-limit threshold

Programmable switching frequency: 200 kHz to 1400 kHz

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

Data Sheets

Document	note
ADP2387: 20 V, 6 A, Synchronous, Step-Down DC-to-DC Regulator Data Sheet (Rev. B)	PDF 547.17 K

User Guides

Document	note
UG-786: Evaluation Board for the ADP2387 20 V, 6 A Synchronous, Step-Down, DC-to-DC Regulator (Rev. A)	PDF 251.88 K

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADP2387ACPZN-R7 Production	24 ld LFCSP (4x4mm w/1.5x2.7 and 0.95x2.7mm EP)	REEL 1500	-40 to 125C	0	2.04	Y

Evaluation Boards

Part Number	Description	Price	RoHS
ADP2387-EVALZ	Evaluation Board	60	Y

ADP2387: 20 V, 6 A, Synchronous, Step-Down DC-to-DC Regulator Data Sheet (Rev. B) adp2387

UG-786: Evaluation Board for the ADP2387 20 V, 6 A Synchronous, Step-Down, DC-to-DC Regulator (Rev. A) adp2387