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2.5V to 36V, 2.5MHz, PWM Boost Controller with 4μA Shutdown Current and Reduced EMI

High-Voltage Boost Controller Enables Small Solution Size

产品详情

主要特征

应用/用途

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 2.5
VIN (V) (max) 36
VOUT1 (V) (min) 4.5
VOUT1 (V) (max) 36
IOUT1 (A) (max) 50
Switch Type External
Output Adjust. Method Resistor
Power Good Signal Yes
ICC (mA) (typ) 0.75
Shutdown Mode Supply Current (µA) (typ) 4
Shutdown Mode Supply Current (µA) (max) 7
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools EE-Sim
Package/Pins TQFN-CU/12
UMAX/10
Budgetary
Price (See Notes)
1.76
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简化框图

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参量

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 2.5
VIN (V) (max) 36
VOUT1 (V) (min) 4.5
VOUT1 (V) (max) 36
IOUT1 (A) (max) 50
Switch Type External
Output Adjust. Method Resistor
Power Good Signal Yes
ICC (mA) (typ) 0.75
Shutdown Mode Supply Current (µA) (typ) 4
Shutdown Mode Supply Current (µA) (max) 7
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=6421', '')
Package/Pins TQFN-CU/12
UMAX/10
Budgetary
Price (See Notes)
1.76

主要特征

  • Reduces Solution Size and Cost
    • All-Ceramic Capacitor Solution Allows Ultra-Compact Solution Size
    • 100kHz to 1MHz (MAX17290) and 1MHz to 2.5MHz (MAX17292) Switching-Frequency with External Synchronization
  • Increases Design Flexibility
    • Bootstrapped Mode Allows Input Voltage to be 2.5V
    • Adjustable Slope Compensation
  • Reduces Power Dissipation
    • >90% Peak Efficiency
    • Low 4μA (typ.) Shutdown Current
  • Operates Reliably
    • 42V Input Voltage Transient Protection
    • Fixed 9ms Internal Software Start Reduces Input Inrush Current
    • PGOOD Output and Hiccup Mode for Enhanced System Protection
    • Overtemperature Shutdown
    • Reduced EMI Emission with Spread-Spectrum Control

应用/用途

  • Distributed Supply Regulation
  • General-Purpose Point-of-Load
  • Offline Power Supplies
  • Telecom Hardware

描述

The MAX17290/MAX17292 high-efficiency, synchronous step-up DC-DC controllers operate over a 4.5V to 36V input voltage range with 42V input transient protection. The input operating range can be extended to as low as 2.5V in Bootstrapped mode.

The MAX17290 and MAX17292 use a constant-frequency, pulse-width modulating (PWM), peak current-mode control architecture. There are multiple versions of the devices offering one or more of the following functions: a synchronization output (SYNCO) for 180° out-of-phase operation, an overvoltage protection function using a separate input pin (OVP), and a reference input pin (REFIN) to allow on-the-fly output voltage adjustment.

The MAX17290 and MAX17292 operate in different frequency ranges. All versions can be synchronized to an external master clock using the FSET/SYNC input.

The devices are available in a compact 12-pin (3mm x 3mm) TQFN and 10-pin μMAX packages. Both packages have exposed pads. -40°C to +85°C Operation.

简化框图

MAX17290, MAX17292: Functional Diagram MAX17290, MAX17292: Functional Diagram Zoom icon

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在Maxim的知识库中搜索技术问题的答案

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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