MAX20074

Single 2A/3A 2.2MHz Low-Voltage Step-Down DC-DC Converters

Small and Efficient Synchronous Buck Converter with Low IQ for Point-of-Load Applications


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Description

The MAX20073/MAX20074 high-efficiency switching regulator family delivers up to 3A load current from 0.5V to 3.8V. The devices operate from an input voltage range of 2.7V to 5.5V, making them ideal for on-board point-of-load and post-regulation applications. Total output error is less than ±1.5% over load, line, and temperature.

The devices feature fixed-frequency PWM mode of operation, with a 2.2MHz switching frequency. High-frequency operation enables an all-ceramic capacitor design and small external components.

The low-resistance on-chip switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Following a simple layout and footprint ensures first-pass success in new designs.

The devices provide an enable input, spread-spectrum enable input, and active-low RESET output. The output voltage can be preset at the factory to allow customers to achieve ±1.5% output-voltage accuracy without using expensive 0.1% external resistors. In addition, the output voltage can be set to any customer value by using two external resistors at the feedback with 0.5V internal reference. The device offers a fixed 0.85ms soft-start time.

The 10-pin TDFN exposed pad devices include overtemperature shutdown and overcurrent limiting. All devices are designed to operate over the -40°C to +125°C ambient temperature range.

Design Solution: Why Automotive ECUs Need a High-Performance POL Converter ›

Key Features

  • High-Feature Set in Ultra-Small Footprint
    • High-Efficiency DC-DC Converter
    • Up to 3A Output Current
    • 2.7V to 5.5V Operating Supply Voltage
    • Resistor-Adjustable or Factory-Preset Output Voltage
    • Synchronizable, 2.2MHz Switching-Frequency Enable Input
    • Active-Low RESET Output
    • Spread-Spectrum Enable Input
    • Forced-PWM and Skip Modes
    • Current-Mode Architecture
    • 3mm × 3mm × 0.85mm 10-Pin TDFN
  • High Precision
    • 107% Overvoltage Monitor
    • 93% Undervoltage Monitor
    • ±1.5% Output-Voltage Accuracy
    • Excellent Load Transient Performance
    • Overtemperature and Short-Circuit Protection
    • -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Automotive
  • Point-of-Load
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX20073 2.760.53.83.3
Preset
Resistor
2InternalYesYes12200EE-Sim
TDFN-CU/10
$1.20 @1k
MAX20074 3
TDFN-CU/10
-
See All Step-Down Switching Regulators (388)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX20073EVKIT: Evaluation Kit for the MAX20073
MAX20074EVKIT: Evaluation Kit for the MAX20074

Quality and Environmental Data

Request Reliability Report for: MAX20074 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Design Solution: Why Automotive ECUs Need a High-Performance POL Converter ›


Tools & Models

  • EE-Sim: Design & Simulate MAX20074
  • MAX20074 SIMPLIS Schematic
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
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