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Dual-Output 4A, 3MHz, 2.7V to 16V Step-Down Switching Regulator

Shrink Your Designs With the Smallest and Fastest Two Regulators in One Package.

产品详情

主要特征

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 16
VOUT1 (V) (min) 0.5
VOUT1 (V) (max) 5.8
IOUT1 (A) (max) 4
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 3000
Design Tools EE-Sim
Package/Pins FC2QFN/21
Budgetary
Price (See Notes)
2.79
缩小

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参量

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 16
VOUT1 (V) (min) 0.5
VOUT1 (V) (max) 5.8
IOUT1 (A) (max) 4
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 3000
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=29591', '')
Package/Pins FC2QFN/21
Budgetary
Price (See Notes)
2.79

主要特征

  • High-Power Density with Low Component Count
    • Dual-Output or Dual-Phase Operation
    • Single-Supply Operation with Integrated LDO for Bias Generation
    • Optional 2.5V to 5.5V External Bias for Higher Efficiency
    • Compact 3.5mm x 4.6mm, 21-Pin, FC2QFN Package
    • Internal Compensation
  • Wide Operating Range
    • 2.7V to 16V Input Voltage Range
    • 0.5V to 5.8V Output Voltage Range
    • 500kHz to 3MHz Configurable Switching Frequency
    • -40°C to +125°C; Junction Temperature Range
    • Three Pin-Strap Programming Pins to Select Different Configurations
    • Independent Enable and Power Good for Each Output
  • Optimized Performance and Efficiency
    • 92.5% Peak Efficiency with VDDH = 12V, VOUT = 1.8V, and fSW = 1MHz
    • Interleaved 180° Out-of-Phase Operation
    • Selectable AMS to Improve Load Transient
    • Selectable DCM to Improve Light Load Efficiency
    • Active Current Balancing for Dual-Phase Operation (MAX20808 only)

应用/用途

  • Data Center Power
  • Communications Equipment
  • Networking Equipment
  • Servers and Storage
  • Point-of-Load Voltage Regulators

描述

The MAX20808/MAX20808T are dual-output, fully integrated, highly efficient, step-down DC-DC switching regulators. The regulators are able to operate from 2.7V to 16V input supplies, and each output can be regulated from 0.5V to 5.8V, delivering up to 4A of load current per output. With the MAX20808, the two outputs can be connected in parallel as a single-output, dual-phase regulator that supports up to 8A load current. The switching frequency of the devices can be configured from 500kHz to 3MHz and provides the capability of optimizing the design in terms of solution size and performance.

The MAX20808/MAX20808T utilize fixed-frequency, current-mode control with internal compensation. The dual-switching regulators operate 180° out-of-phase. The MAX20808/MAX20808T feature a selectable advanced modulation scheme (AMS) to provide improved dynamic load transient performance. The devices also feature selectable discontinuous current mode (DCM) operation to improve light load efficiency. Operation settings and configurable features can be selected by connecting pin-strap resistors from the PGM_ pins to ground.

The MAX20808/MAX20808T have an internal 1.8V low-dropout (LDO) output to power the gate drives (VCC) and internal circuitry (AVDD). The devices also have an optional LDO input pin (LDOIN), allowing connection from a 2.5V to 5.5V bias input supply for optimized efficiency.

The MAX20808/MAX20808T integrate multiple protections including positive and negative overcurrent protection, output overvoltage protection, and overtemperature protection to ensure a robust design.

The MAX20808/MAX20808T are available in compact 3.5mm x 4.6mm FC2QFN packages that support -40°C to +125°C junction temperature operation. The MAX20808 package has an open top, and MAX20808T package has a closed top.

简化框图

MAX20808: Block Diagram MAX20808: 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