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42V, 100mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22µA No-Load Supply Current

42V, Low IQ Synchronous Buck Regulator Enables High Efficiency

Product Details

Key Features

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4
VIN (V) (max) 42
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 37
IOUT1 (A) (max) 0.1
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 2200
Design Tools EE-Sim
Package/Pins TDFN/10
UMAX/10
Budgetary
Price (See Notes)
1.22
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Simplified Block Diagram

Technical Docs

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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.

Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4
VIN (V) (max) 42
VOUT1 (V) (min) 0.8
VOUT1 (V) (max) 37
IOUT1 (A) (max) 0.1
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 2200
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=5458', '')
Package/Pins TDFN/10
UMAX/10
Budgetary
Price (See Notes)
1.22

Key Features

  • Reduces External Components and Total Cost
    • No Schottky–Synchronous
    • Internal Compensation for Any Output Voltage
    • Built-In Soft-Start
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4V to 42V Input
    • Adjustable 0.8V to 0.9 x VIN Output
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • 22µA Quiescent Current
    • Peak Efficiency > 90%
    • PFM Enables Enhanced Light-Load Efficiency
    • 1.2µA Shutdown Current
  • Operates Reliably in Adverse Environments
    • Peak Current Limit Protection
    • Built-In Output Voltage Monitoring Active-Low RESET
    • Programmable EN/UVLO Threshold
    • Monotonic Startup Into Prebiased Load
    • Overtemperature Protection
    • -High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150° C Junction Temperature Range

Applications/Uses

Description

The MAX17532 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 42V input. The converter can deliver up to 100mA and generates output voltages from 0.8V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C.

The MAX17532 uses peak-current-mode control and can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes.

The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (3mm x 3mm) µMAX® packages. Simulation models are available.

Simplified Block Diagram

MAX17532: Block Diagram MAX17532: Block 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.