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4.5V–16V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Resistor Programmability

Highly Customizable Buck Regulator Can Be Configured for Two Independent 3A Outputs or a Dual-Phase 6A Single Output

Product Details

Key Features

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.9
VOUT1 (V) (max) 5
IOUT1 (A) (max) 3
Switch Type Internal
Preset VOUT (V) 20mV steps
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 1500
2000
500
1000
Design Tools EE-Sim
Package/Pins TQFN-CU/32
Budgetary
Price (See Notes)
3.19
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Simplified Block Diagram

Technical Docs

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Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.9
VOUT1 (V) (max) 5
IOUT1 (A) (max) 3
Switch Type Internal
Preset VOUT (V) 20mV steps
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 1500
2000
500
1000
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=2222', '')
Package/Pins TQFN-CU/32
Budgetary
Price (See Notes)
3.19

Key Features

  • Reduces Number of DC-DC Regulators in Inventory
    • Output Voltage (0.904V to 3.782V and 4.756V to 5.048V with 20mV Resolution)
    • Configurable Two Independent Outputs (3A/3A) or a Dual-Phase Single Output (6A)
  • Mitigate Noise Concerns and EMI
    • Adjustable Switching Frequency with Selectable 0/180° Phase Shift
    • External Frequency Synchronization
    • Adjustable Switching Slew Rate
    • Passes EN55022 (CISPR22) Class-B Radiated and Conducted EMI Standard
  • Ease of System Design
    • All Ceramic Capacitors Solution
    • Auto-Configured Internal Compensation
    • Selectable Hiccup or Brickwall Mode
    • Adjustable Soft-Start Rise/Fall Time with Soft Stop Modes and Prebias Startup
    • -40°C to +125°C Operation
  • Reliable Operation
    • Robust Fault Protections (VIN_UVLO, UV/OV, UC/OC, OT)
    • Power Good

Applications/Uses

  • Base Station Point-of-Load Regulator
  • FPGA and DSP Core Power
  • Industrial Control Equipment
  • Multiple Point-of-Load (POL) Power Supplies

Description

The MAX17509 integrates two 3A internal switch step-down regulators with programmable features. The device can be configured as two single-phase independent, 3A power supplies or as a dual-phase, single-output 6A power supply. The device operates from 4.5V to 16V input and generates independently adjustable output voltage in the ranges of 0.904V to 3.782V and 4.756V to 5.048V, with ±2% system accuracy.

This device provides maximum flexibility to the end-user by allowing to choose multiple programmable options by connecting resistors to the configuration pins. Two key highlights of the device are the self-configured compensation for any output voltage and the ability to program the slew rate of LX switching nodes to mitigate noise concerns. In noise-sensitive applications, such as high-speed multi-gigabit transceivers in FPGAs, RF, and audio benefit from this unique slew rate control. SYNC input is provided for synchronized operation of multiple devices with system clocks.

MAX17509 offers output overvoltage (OV) and undervoltage (UV) protection, as well as overcurrent (OC) and undercurrent (UC) protection with a selectable hiccup/latch option. It operates over the -40°C to +125°C temperature range, with thermal sensing and shutdown provided for overtemperature (OT) protection. The device is available in a 32-pin 5mm x 5mm TQFN package.

Simplified Block Diagram

MAX17509: Functional Diagram MAX17509: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.