回到顶部

Dual 36V Input Voltage, 8A Synchronous Buck Converters with Multiphase Capability and ASIL B

High Power Density and Scalable Power Conversion for Automotive Off-Battery Applications from Dual 6A to Single 32A

产品详情

主要特征

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3
VIN (V) (max) 42
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 14
IOUT1 (A) (max) 8
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Adjustable
Factory configured
Preset or Adj
Synchronous Switching? Yes
Power Good Signal Yes
IQ (mA) (typ) 0.012
Switching Frequency (kHz) 2100
400
Package/Pins FC2QFN/23
Budgetary
Price (See Notes)
3.32
缩小

简化框图

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com

参量

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3
VIN (V) (max) 42
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 14
IOUT1 (A) (max) 8
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Adjustable
Factory configured
Preset or Adj
Synchronous Switching? Yes
Power Good Signal Yes
IQ (mA) (typ) 0.012
Switching Frequency (kHz) 2100
400
Package/Pins FC2QFN/23
Budgetary
Price (See Notes)
3.32

主要特征

  • Dual Buck Converter
    • Wide Input Range from 3.0V to 36V (42V, max)
    • Low Shutdown Supply Current (6.5µA, max)
    • Low Operating Quiescent Current with One Channel ON (12µA, typ)
    • Programmable VOUT from 0.8V to 14V
    • Up to 8A per Channel
    • 180° Out-of-Phase Operation between Two Converters
    • 24ns (typ) Minimum On-Time
  • Dual/Quad Phase Operation
    • Ability to Operate Two ICs in Parallel for Quad-Phase Operation
    • ±10% Current Sharing Accuracy
    • Supports up to 16A in Dual-Phase and 32A in Quad-Phase
  • Diagnostics and Redundant Circuits (MAX25255)
    • ASIL B Compliant
    • Redundant Reference
    • Die Temperature Monitor
    • Precision Overvoltage and Undervoltage Protection
  • General
    • 23-Pin, 4.50mm x 5.75mm FC2QFN Package
    • -40°C to +125°C Operating Ambient Temperature
    • AEC-Q100 Rating
    • 200kHz, 400kHz, 1MHz, or 2MHz Switching Frequency Options
    • Spread Spectrum

应用/用途

  • Front-End Power Supply for Head Units
  • ASIL Applications
  • General-Purpose Dual Buck Converters
  • Telematics Modules
  • Front Camera Power

描述

The MAX25254/MAX25255 are small, synchronous dual buck converters with integrated high-side and low-side switches. The ICs are designed to deliver up to 8A per channel with input voltages from 3V to 36V while using only 12µA quiescent current at no load. Voltage quality can be monitored by observing the PGOOD signals. The MAX25254/MAX25255 can regulate the output voltage in the dropout region by running at 99% of the duty cycle, making them ideal for automotive and industrial applications.

The MAX25254/MAX25255 offer two fixed output voltages of 5V and 3.3V. Four fixed frequency options allow for small external components and reduced output ripple, and also guarantee no AM interference. The MAX25254/MAX25255 can enter skip mode at light loads with ultra-low quiescent current of 12µA at no load. The MAX25254/MAX25255 can be ordered with spread spectrum enabled for optimum EMI performance.

Two buck converters within the MAX25254D and MAX25255D can be configured for dual-phase operation with up to 16A output load capability. Furthermore, the MAX25254D/MAX25255D and the MAX25254Q/MAX25255Q can be used in parallel to provide 4-phase operation that supports up to 32A (max) output current.

The MAX25254/MAX25255 are available in a small, 4.50mm x 5.75mm, 23-pin FC2QFN package and use very few external components.

简化框图

MAX25254, MAX25255: Simplified Block Diagram MAX25254, MAX25255: Simplified Block Diagram Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com