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4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

Save Space and Reduce Heat, 300mA Synchronous Buck, Highly Efficient, Power Module in our uSLIC Package

Product Details

The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler powersupply solutions. The MAXM17901/MAXM17903 are a family of high-efficiency, synchronous step-down DC-DC modules with integrated controller, MOSFETs, compensation components, and inductor that operate over a wide input-voltage range. The modules operate from 4.5V to 24V input and deliver up to 300mA output current. The MAXM17901 is a fixed 3.3V output modules. The MAXM17903 is an adjustable output (0.9V to 5V) module. The modules significantly reduce design complexity, manufacturing risks, and offer a true plug and play power/supply solution, reducing time-to-market.

Both modules employ peak-current-mode control architecture. To reduce input inrush current, the modules offer a fixed 4.1ms soft-start time.

The MAXM17901/03 modules is available in a low profile, compact 10-pin, 2.6mm × 3mm × 1.5mm, uSLIC™ package.


Solve Space and Thermal Challenges with uSLIC Power Modules

Key Features

  • Easy to use
    • Wide 4.5V to 24V Input
    • Adjustable 0.9V to 5V Output
    • Fixed 3.3V Output (MAXM17901)
    • ±1.5% Feedback Accuracy
    • Up to 300mA Output-Current Capability
    • Internally Compensated
    • All Ceramic Capacitors
  • High Efficiency
    • Selectable PWM- or PFM-Mode of Operation
    • Shutdown Current as Low as 2.2µA (typ)
  • Flexible Design
    • Internal Soft-Start and Prebias Startup
    • Open-Drain Power Good Output (Active-Low RESET Pin)
    • Programmable EN/UVLO Threshold
  • Robust Operation
    • Hiccup Overcurrent Protection
    • Overtemperature Protection
    • -40°C to +125°C Ambient Operating Temperature/-40°C to +150°C Junction Temperature
  • Rugged
    • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions
    • Passes Drop, Shock, and Vibration Standards: JESD22-B103, B104, B111

Applications/Uses

  • 4-20mA Current-Loop Powered Sensors
  • Battery-Powered Equipment
  • General Purpose Point-of-Load
  • HVAC and Building Control
  • Industrial Sensors and Encoders
  • LDO Replacement
  • USB Type-C Powered Loads
Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 24
VOUT1 (V) (min) 0.9
VOUT1 (V) (max) 3.3
IOUT1 (A) (max) 0.3
Switch Type Internal
Preset VOUT (V) -
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) -
Design Tools EE-Sim
Package/Pins EMGA/10
Budgetary
Price (See Notes)
$1.55 @1k
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Simplified Block Diagram

MAXM17903: Typical Application Circuit MAXM17903: Typical Application Circuit Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAXM17903 1.5V output evaluation kit (EV kit) provides a proven design to evaluate the MAXM17903 high-voltage, high-efficiency, synchronous step-down DC-DC module. The EV kit is programmed to deliver 1.5V output for loads up to 300mA. The EV kit features an adjustable input undervoltage lockout, selectable mode, and open-drain active-low RESET signal. The MAXM17903 data sheet provides a complete description of the module that should be read in conjunction with this EV kit data sheet prior to modifying the demo circuit. For full module features, benefits and parameters, refer to the MAXM17903 data sheet.

View Details

Features

  • Highly Integrated Solution
  • Wide 4.5V to 21.5V Input Range
  • Programmed 1.5V Output, Delivers Up To 300mA Output Current
  • High 75.50% Efficiency (VIN = 12V, VOUT = 1.5V at 100mA)
  • 500kHz Switching Frequency
  • ENABLE/UVLO Input, Resistor-Programmable UVLO Threshold
  • PFM Feature for Better Light-Load Efficiency
  • Fixed Internal 4.1ms Soft-Start Time
  • RESET Output, with Pullup Resistor to VCC
  • Overcurrent and Overtemperature Protection (OCP and OTP)
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions

Description

The MAXM17901 3.3V output evaluation kit (EV kit) provides a proven design to evaluate the MAXM17901 high-voltage, high-efficiency, synchronous step-down DC-DC module. The EV kit is programmed to deliver 3.3V output for loads up to 300mA. The EV kit features an adjustable input undervoltage lockout, selectable mode, and open-drain active-low RESET signal. The MAXM17901 data sheet provides a complete description of the module that should be read in conjunction with this EV kit data sheet prior to modifying the demo circuit. For full module features, benefits and parameters, refer to the MAXM17901 data sheet.

View Details

Features

  • Highly Integrated Solution
  • Wide 5.5V to 24V Input Range
  • Fixed 3.3V Output, Delivers Up To 300mA Output Current
  • High 85.51% Efficiency (VIN = 12V, VOUT = 3.3V at 100mA)
  • 500kHz Switching Frequency
  • ENABLE/UVLO Input, Resistor-Programmable UVLO Threshold
  • PFM Feature for Better Light-Load Efficiency
  • Fixed Internal 4.1ms Soft-Start Time
  • Active-Low RESET Output, with Pullup Resistor to VCC
  • Overcurrent and Overtemperature Protection (OCP and OTP)
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions

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Tools & Models

EE-Sim: Design & Simulate MAXM17903

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Support & Training

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Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 24
VOUT1 (V) (min) 0.9
VOUT1 (V) (max) 3.3
IOUT1 (A) (max) 0.3
Switch Type Internal
Preset VOUT (V) -
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) -
Design Tools EE-Sim
Package/Pins EMGA/10
Budgetary
Price (See Notes)
$1.55 @1k

Key Features

  • Easy to use
    • Wide 4.5V to 24V Input
    • Adjustable 0.9V to 5V Output
    • Fixed 3.3V Output (MAXM17901)
    • ±1.5% Feedback Accuracy
    • Up to 300mA Output-Current Capability
    • Internally Compensated
    • All Ceramic Capacitors
  • High Efficiency
    • Selectable PWM- or PFM-Mode of Operation
    • Shutdown Current as Low as 2.2µA (typ)
  • Flexible Design
    • Internal Soft-Start and Prebias Startup
    • Open-Drain Power Good Output (Active-Low RESET Pin)
    • Programmable EN/UVLO Threshold
  • Robust Operation
    • Hiccup Overcurrent Protection
    • Overtemperature Protection
    • -40°C to +125°C Ambient Operating Temperature/-40°C to +150°C Junction Temperature
  • Rugged
    • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions
    • Passes Drop, Shock, and Vibration Standards: JESD22-B103, B104, B111

Applications/Uses

  • 4-20mA Current-Loop Powered Sensors
  • Battery-Powered Equipment
  • General Purpose Point-of-Load
  • HVAC and Building Control
  • Industrial Sensors and Encoders
  • LDO Replacement
  • USB Type-C Powered Loads

Description

The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler powersupply solutions. The MAXM17901/MAXM17903 are a family of high-efficiency, synchronous step-down DC-DC modules with integrated controller, MOSFETs, compensation components, and inductor that operate over a wide input-voltage range. The modules operate from 4.5V to 24V input and deliver up to 300mA output current. The MAXM17901 is a fixed 3.3V output modules. The MAXM17903 is an adjustable output (0.9V to 5V) module. The modules significantly reduce design complexity, manufacturing risks, and offer a true plug and play power/supply solution, reducing time-to-market.

Both modules employ peak-current-mode control architecture. To reduce input inrush current, the modules offer a fixed 4.1ms soft-start time.

The MAXM17901/03 modules is available in a low profile, compact 10-pin, 2.6mm × 3mm × 1.5mm, uSLIC™ package.


Solve Space and Thermal Challenges with uSLIC Power Modules

Simplified Block Diagram

MAXM17903: Typical Application Circuit MAXM17903: Typical 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