MAX20048

Automotive 40V, 55µA IQ, 2.2MHz, H-Bridge Buck-Boost Controller

Industry's Lowest IQ Buck-Boost Controller with Best in Class Transient Response


Please check latest availability status for a specific part variant.

Description

The MAX20048 is a current‐mode buck‐boost controller. The device operates with input voltages from 4.5V to 36V while using only 55µA quiescent current at no load. Once the start‐up conditions are satisfied, the device can operate over an extended input voltage range of 2V to 36V. The switching frequency is resistor programmable from 220kHz to 2.2MHz and can be synchronized to an external clock.

The device output voltage is available as 5V fixed or adjustable from 4V to 25V. The wide input voltage range, along with its ability to maintain constant output voltage during battery transients, makes the device ideal for automotive applications. In light load applications, a logic input (FSYNC) allows the devices to operate either in skip mode for reduced current consumption, or fixed‐frequency, forced‐ PWM mode to eliminate frequency variation and help minimize EMI. Protection features include cycle‐by‐cycle current limit, and thermal shutdown with automatic recovery.

The MAX20048 is available in a small 4mm x 4mm 24-pin TQFN-EP SW package.

Key Features

  • Meets Stringent Automotive Quality and Reliability Requirements
    • Operating VIN Range: 2V to 36V Allows Operation in Cold-Crank Conditions
    • Tolerates Input Transients to 40V
    • EN Pin Compatible from +3.3V to +40V
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
  • Efficient Solution in a Small Solutions Size
    • Skip Mode for Efficient Low Power Operation
    • Fixed 5V Output Voltage and Adjustable 4V to 25V
    • High Switching Frequency Allows Use of Small External Components
    • Small 4mm x 4mm 24-Pin SWTQFN Package
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements
    • 55µA Quiescent Current When in Stand-By Mode
    • 10µA (max) Quiescent Current in Shutdown
  • EMI Mitigation to meet CISPR25 Class 5 Requirements
    • 220kHz to 2.2MHz Operating Frequency
    • Fixed-Frequency PWM Mode
    • External Frequency Synchronization or SYNC OUT Capability (Selectable by OTP Option)
    • Spread Spectrum Can Be Enabled or Disabled for the IC by OTP Option

Applications/Uses

  • Instrument Cluster
  • Point of Load Power Supply
  • Remote Display
  • Start-Stop Systems
  • USB Power

See parametric specs for Step-Down/Up Switching Regulators (31)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
IOUT1
(A)
Switch TypeOper. Freq.
(kHz)
FeaturesDesign ToolsPackage/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxminmaxmaxSee Notes
MAX20048 24042525External
300
400
500
1000
2200
2500
External Sync.
Fixed Freq./PWM
Reset Output
EE-Sim
TQFN-CU/24
-40 to +85
-40 to +125
$2.89 @1

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.

MAX20048EVKIT: Evaluation Kit for the MAX20048

Tools & Models

  • EE-Sim: Design & Simulate MAX20048
  • Request Reliability Report for: MAX20048 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    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 >

     
    Status:
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    Temperature:

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