Wide VIN 800mA Synchronous Buck Regulator
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Overview
Description
The ISL85418 is a 800mA synchronous buck regulator with an input range of 3V to 40V. It provides an easy-to-use, high efficiency low BOM count solution for a variety of applications. The ISL85418 integrates both high-side and low-side NMOS FETs and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is needed. The ISL85418 switches at a default frequency of 500kHz; however, it can also be programmed using an external resistor from 300kHz to 2MHz. The ISL85418 has the ability to use internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, which reduces the BOM count and design complexity. With a wide VIN range and reduced BOM, the ISL85418 provides an easy to implement design solution for a variety of applications while giving superior performance. The ISL85418 provides a very robust design for high-voltage industrial applications and an efficient solution for battery powered applications. The ISL85418 is available in a small Pb-free 4mmx3mm DFN plastic package with an operation temperature range of -40°C to +125°C.
Features
- Wide input voltage range: 3V to 40V
- Synchronous operation for high efficiency
- No compensation required
- Integrated high-side and low-side NMOS devices
- Selectable PFM or forced PWM mode at light loads
- Internal fixed frequency (500kHz) or adjustable switching frequency (300kHz to 2MHz)
- Continuous output current up to 800mA
- Internal or external soft-start
- Minimal external components required
- Power-good and enable functions available
Applications
| Multi-Sensor Module for Industrial Ethernet | |
| Wi-SUN FAN-Based High Output Sub-GHz Wireless Communication | |
| All-in-One Smart Pressure Cooking Pot |
Applications
- Industrial control
- Medical devices
- Portable instrumentation
- Distributed power supplies
- Cloud infrastructure
Documentation
| Document title | Document type
|
Date Date | |
|---|---|---|---|
| PDF 2.32 MB | Datasheet | ||
| PDF 592 KB | Application Note | ||
| PDF 2.35 MB | Application Note | ||
| PDF 509 KB | Application Note | ||
| PDF 397 KB | Application Note | ||
| PDF 650 KB | Application Note | ||
| PDF 387 KB | Application Note | ||
| PDF 349 KB | Application Note | ||
| PDF 5.35 MB 日本語 | Brochure | ||
| PDF 326 KB | Product Change Notice | ||
| PDF 226 KB | Product Change Notice | ||
| PDF 1.07 MB | White Paper | ||
| PDF 468 KB | White Paper | ||
| PDF 337 KB 简体中文 | White Paper | ||
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Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
|
Simulator | Renesas |
1 item
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Boards & Kits
Boards & Kits
800mA Synchronous Buck Regulator Demonstration Board
The ISL85418DEMO1Z board is intended for use in point-of-load applications sourcing from 3V to 40V. The board is used to demonstrate the performance of the ISL85418...
Featured Documents:
Wide VIN 800mA Synchronous Buck Regulator Evaluation Board
The ISL85418EVAL1Z evaluation kit is intended for use for point-of-load applications sourcing from 3V to 40V.
The ISL85418 wide VIN, low quiescent current,...
Featured Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| DFN | Tube | 1500 | Get Samples, | |
ISL85418FRZ-T Active Samples Available |
DFN | Reel | 6000 | Get Samples, |
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