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14V Input, 3A High-Efficiency Buck Converter in WLP or QFN

High-Efficiency Buck Converter in Small 1.7mm x 1.7mm WLP

Product Details

Key Features

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Simplified Block Diagram

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Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 2.6
VIN (V) (max) 14
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 6
IOUT1 (A) (max) 3
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1500
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=18144', '')
Package/Pins FC2QFN/12
WLP/16
Budgetary
Price (See Notes)
0.48

Key Features

  • 3A Single-Channel Buck Regulator
  • 2.6V to 14V Input Voltage
  • 0.6V to 6V Output Voltage Range
  • 0.5MHz to 1.5MHz Fixed-Frequency Switching Options 
  • High Efficiency, Low IQ Extends Battery Life
    • 94% Peak Efficiency at 7.4VIN, 3.3VOUT (2520 Inductor)
    • 10μA ISUP (12VIN, 1.8VOUT)
    • OUT Powers VL Automatically (VOUT > 1.7V) for Low IQ
  • Enable Pin (EN) for Direct Hardware Control
  • Extenal Clock Synchronization Is Available Through the FPWM/SYNC Pin
  • Power-OK Output (POK) Monitors VOUT Quality (See Ordering Information)
  • Protection Features
    • Cycle-by-Cycle Inductor Current Limit
    • Short-Circuit Hiccup Mode, UVLO, and Thermal Shutdown Protection
    • Soft-Start 
  • FC2QFN or WLP Package Option
    • 2.5mm x 2.5mm (0.6mm max. height) 12-Lead FC2QFN, 0.5mm Pitch
    • 1.7mm x 1.7mm (0.7mm max. height) 16-Bump WLP, 0.4mm Pitch, 4 x 4 Array
  • All WLP Package Bumps (Except POK) Routeable on a Non-HDI PCB

Applications/Uses

  • 1- to 3-Cell Li+/Li-ion Battery-Powered Devices
  • Professional Radio, Handheld Computers
  • Mirrorless Cameras, DSLR, and Notebook Computers
  • Portable Scanners, POS Terminals, Printers
  • Space-Constrained Portable Electronics

Description

The MAX77504 is a synchronous 3A step-down DC-DC converter optimized for portable 2-cell and 3-cell battery-operated applications. The converter operates on an input supply between 2.6V and 14V. Output voltage is adjustable between 0.6V and 6V with external feedback resistors. The device features a low-IQ SKIP mode that allows excellent efficiency at light loads. The MAX77504 can be sychronized by driving the FPWM pin with an external clock.

Dedicated enable, power-OK, and FPWM pins allow simple hardware control. The SEL input easily configures switching frequency, gain, and output active discharge option. Built-in undervoltage lockout (UVLO), output active discharge, cycle-by-cycle inductor current limit, thermal shutdown, and short-circuit protection ensure safe operation under abnormal operating conditions.

The MAX77504 is offered in a small 1.7mm x 1.7mm, 16-bump, 0.4mm pitch wafer-level package (WLP) or a 2.5mm x 2.5mm, 12-lead, 0.5mm pitch flip-chip QFN (FC2QFN).

Simplified Block Diagram

MAX77504: Simplified Application Circuit MAX77504: Simplified Application Circuit 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.