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Automotive 36V, 2.5A/3.5A, Fully Integrated Synchronous Buck Converters

High-Efficiency, Low-EMI, Synchronous Buck Converter for Automotive Off-Battery Applications

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) 12
IOUT1 (A) (max) 3.5
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
IQ (mA) (typ) .01
# DC-DC Outputs 1
Switching Frequency (kHz) 2100
400
Design Tools EE-Sim
Package/Pins FC2QFN/15
Budgetary
Price (See Notes)
1.16
缩小

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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) 12
IOUT1 (A) (max) 3.5
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
IQ (mA) (typ) .01
# DC-DC Outputs 1
Switching Frequency (kHz) 2100
400
Design Tools generateDesignEESIMUrl('httpss://maxim.transim.com/pwm2/designreq/Index?partId=29754', '')
Package/Pins FC2QFN/15
Budgetary
Price (See Notes)
1.16

主要特征

  • Multiple Functions for Small Size
    • Operating Input Voltage Range: 3V to 36V
    • Synchronous DC-DC Converter with Integrated FETs up to 2.5A/3.5A
    • 10μA Quiescent Current in Skip Mode
    • 3MHz/2.1MHz/400kHz Switching Frequency
    • Spread-Spectrum Option
    • Fixed 2.5ms Internal Soft-Start
    • Programmable 0.8V to 12V Output Voltage Range or Fixed 5V/3.3V Options Available
    • 99% Duty Cycle Operation with Low Dropout
  • High Precision for Safety Critical Applications
    • ±1.5% Output Voltage Accuracy in FPWM
    • Precision Enable Thresholds for Fully Programmable UVLO Thresholds
    • Accurate Windowed PGOOD
  • Robust for the Automotive Environment
    • Average Current Mode, Forced-PWM, and Skip Operation
    • Overtemperature, Overvoltage, and Short-Circuit Protection
    • 3mm x 3mm FC2QFN
    • -40°C to +125°C Operating Temperature Range
    • 42V Load-Dump Tolerant
    • AEC-Q100 Qualified

应用/用途

  • Automotive Applications
  • ADAS Systems
  • Radar Modules
  • Infotainment
  • Industrial Applications
  • High-Voltage DC-DC Converters

描述

The MAX20402/MAX20403 IC are tiny synchronous buck converters with integrated high-side and low-side switches. The MAX20402/MAX20403 deliver up to 2.5A/3.5A over a wide 3V to 36V input voltage range. Voltage quality can be monitored by observing the PGOOD signal. These ICs can operate in dropout by running at 99% duty cycle, making them ideal for automotive and industrial applications.

The MAX20402/MAX20403 offer externally programmable or internally fixed output voltages of 5V and 3.3V. Fixed internal frequency options of 3MHz/2.1MHz/400kHz are available, which allow for small external components and reduced output ripple, and also guarantee no AM interference.

When SYNC is low, the MAX20402/MAX20403 automatically enter skip mode at light loads with an ultra-low quiescent current of 10μA at no load. A pin-selectable forced-PWM mode is also available, which helps improve EMI performance. The devices have a spread-spectrum frequency modulation option designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX20402/MAX20403 are available in a small, 3mm x 3mm FC2QFN package and use very few external components.

简化框图

MAX20402, MAX20403: Simplified Block Diagram MAX20402, MAX20403: 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