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2.2MHz Sync Boost and Dual Step-Down Converters

Small PMIC for All Automotive Applications

Product Details

Key Features

Applications/Uses

Parametric specs for Multifunction PMICs
VIN (V) (min) 3
VIN (V) (max) 5.5
# Step-Down Outputs 2
# Step-Up Outputs 1
VOUT (V) (min) 0.8
VOUT (V) (max) 3.8
8.5
Package/Pins TQFN-CU/24
Budgetary
Price (See Notes)
2.52
Parametric specs for Step-Down/Up Switching Regulators
VIN (V) (min) 3
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 8.5
IOUT1 (A) (max) 0.75
Switch Type Internal
Preset VOUT (V) 5
VOUT1 Tolerance (±%) 2
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 3
Alternate Topology Step-Down
Step-Up
Switching Frequency (kHz) 2000
2200
Design Tools EE-Sim
Package/Pins TQFN-CU/24
Oper. Temp. (°C) -40 to +125
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Simplified Block Diagram

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Parameters

Parametric specs for Multifunction PMICs
VIN (V) (min) 3
VIN (V) (max) 5.5
# Step-Down Outputs 2
# Step-Up Outputs 1
VOUT (V) (min) 0.8
VOUT (V) (max) 3.8
8.5
Package/Pins TQFN-CU/24
Budgetary
Price (See Notes)
2.52
Parametric specs for Step-Down/Up Switching Regulators
VIN (V) (min) 3
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 8.5
IOUT1 (A) (max) 0.75
Switch Type Internal
Preset VOUT (V) 5
VOUT1 Tolerance (±%) 2
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 3
Alternate Topology Step-Down
Step-Up
Switching Frequency (kHz) 2000
2200
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=9186', '')
Package/Pins TQFN-CU/24
Oper. Temp. (°C) -40 to +125

Key Features

  • Multiple Functions for Small Size
    • Synchronous 750mA Boost Converter
      • Fixed from 3.8V to 8.5V in 100mV Steps
    • Dual Synchronous Buck Converters Up to 3A
      • Factory-Configurable Output Voltages from 0.8V to 3.8V in 25mV Steps
      • Resistor Adjustable
    • 3.0V to 5.5V Operating Supply Voltage
    • 2.2MHz Operation
    • Undervoltage Threshold of 93% ±3%
    • Overvoltage Threshold of 107% ±3%
    • Individual Active-Low RESET_ Outputs
  • High-Precision
    • ±1.5% Output-Voltage Accuracy
    • Good Load Transient Performance for Buck Converters
  • Robust for the Automotive Environment
    • Current Mode, Forced-PWM, and Skip Operation
    • Overtemperature and Short-Circuit Protection
    • 4mm × 4mm 24-Pin TQFN
    • -40°C to +125°C Automotive Temperature Range

Applications/Uses

  • All Automotive

Description

The MAX20014 is a high-efficiency three-output low-voltage DC-DC converter. OUT1 boosts the input supply up to 8.5V at up to 750mA, while two synchronous step-down converters operate from a 3.0V to 5.5V input voltage range and provides a 0.8V to 3.8V output voltage range at up to 3A. The boost converter achieves ±2% and the buck converters achieve ±1.5% output error over load, line, and temperature range.

The device features a 2.2MHz fixed-frequency pulse-width modulation (PWM) mode for better noise immunity and load transient response, and a pulse-frequency modulation mode (skip) for increased efficiency during light-load operation. The 2.2MHz frequency operation allows for the use of all-ceramic capacitors and minimizes external components footprint. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low RDS(ON) switches improve efficiency at heavy loads and make the layout a much simpler task with respect to discrete solutions.

The device is offered with factory-preset output voltages or resistor-adjustable output voltages. Other features include soft-start, overcurrent, and overtemperature protections.

Design Solution: How to Shrink Your ADAS ECUs: Wrap the Power Management Around the Signal Chain ›

Simplified Block Diagram

MAX20014: Typical Operating Circuit MAX20014: Typical Operating Circuit Zoom icon

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 .