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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-20 V |
| Switching frequency | 200-1400 kHz |
| Output 1 | 6 A |
| IC revision | B |
Description
The ADP2387 is a synchronous step-down, dc-to-dc regulator with an integrated 44 mΩ, high-side power, metal oxide semiconductorfield effect transistor (MOSFET) and an 11 mΩ, synchronousrectifier MOSFET to provide a high efficiency solution in acompact 4 mm × 4 mm LFCSP. This device uses a peak currentmode, constant frequency pulse-width modulation (PWM)control scheme for excellent stability and transient response.The switching frequency of the ADP2387 can be programmedbetween 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 canbe 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 μAcurrent from the input source when it is disabled. This regulator targets high performance applications that requirehigh efficiency and design flexibility. External compensationand an adjustable soft start function provide design flexibility. The power-good output and precision enable input provide simple and reliable power sequencing. The programmablecurrent-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 mmLFCSP.
Features
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 AProgrammable current-limit thresholdProgrammable switching frequency: 200 kHz to 1400 kHz Precision enable and power good External compensationInternal soft start with external adjustable optionStartup into a precharged outputSupported by ADIsimPower design tool
Typical applications
- Healthcare and medical
- Intermediate power rail conversion,DC-to-dc point of load applications
- Industrial and instrumentation
- Communications infrastructure,Networking and servers
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 1.2 µH, 32.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance1.2 µH | Performance Rated Current32.6 A | Saturation Current @ 10%12 A | Saturation Current @ 30%25 A | DC Resistance1.8 mΩ | Self Resonant Frequency75 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 1.8 µH, 22.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance1.8 µH | Performance Rated Current22.1 A | Saturation Current @ 10%7 A | Saturation Current @ 30%18 A | DC Resistance3.5 mΩ | Self Resonant Frequency70 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 2.4 µH, 18.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance2.4 µH | Performance Rated Current18.6 A | Saturation Current @ 10%6.9 A | Saturation Current @ 30%17 A | DC Resistance4.75 mΩ | Self Resonant Frequency67 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 16.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance3.3 µH | Performance Rated Current16.6 A | Saturation Current @ 10%5 A | Saturation Current @ 30%15 A | DC Resistance5.9 mΩ | Self Resonant Frequency54 MHz | MaterialSuperflux | ||||
| WE-HCI SMT Flat Wire High Current Inductor, 4.2 µH, 15.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance4.2 µH | Performance Rated Current15.4 A | Saturation Current @ 10%5 A | Saturation Current @ 30%14 A | DC Resistance7.1 mΩ | Self Resonant Frequency33 MHz | MaterialSuperflux |