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Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

Highly Integrated Industrial PMIC Enables Small Solution Size

Product Details

Key Features

Applications/Uses

Parametric specs for Multifunction PMICs
VIN (V) (min) 4
VIN (V) (max) 60
# Step-Down Outputs 1
# LDO Outputs 1
VOUT (V) (min) 1.2
VOUT (V) (max) 5
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
1.52
Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4
VIN (V) (max) 60
VOUT1 (V) (min) 5
VOUT1 (V) (max) 5
IOUT1 (A) (max) 0.15
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Preset
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 200
900
1200
1250
1700
220
250
300
330
400
440
450
490
500
550
560
600
700
800
Design Tools EE-Sim
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
1.52
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Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Multifunction PMICs
VIN (V) (min) 4
VIN (V) (max) 60
# Step-Down Outputs 1
# LDO Outputs 1
VOUT (V) (min) 1.2
VOUT (V) (max) 5
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
1.52
Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4
VIN (V) (max) 60
VOUT1 (V) (min) 5
VOUT1 (V) (max) 5
IOUT1 (A) (max) 0.15
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Preset
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 200
900
1200
1250
1700
220
250
300
330
400
440
450
490
500
550
560
600
700
800
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=9838', '')
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
1.52

Key Features

  • Reduces External Components and Total Cost
    • No Schottky–Synchronous Operation
    • Internal Compensation
    • Built-In Soft-Start
    • All-Ceramic Capacitors, Compact Layout
    • Protection against Inductive Short at Step-Down Converter Output
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4V to 60V Input Range for the Step-Down Converter Regulator
    • Up to 98% Duty-Cycle Step-Down Operation
    • 200kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization for Step-down Converter
    • 2.35V to 5.5V Input Range for the Linear Regulator
    • Linear Regulator with up to 50mA Load Current Capability
  • Reduces Power Dissipation
    • 50μA No-Load Supply Current
    • PFM Enables Enhanced Light-Load Efficiency
    • 2.5μA Shutdown Current
    • Bootstrap Bias Input for Improved Efficiency
  • Reliable Operation in Adverse Environments
    • Peak Current-Limit Protection
    • Built-In Output-Voltage Monitoring with active-low RESET
    • Resistor 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

  • Battery-Powered Equipment
  • High-Voltage Linear Regulator Replacement
  • HVAC and Building Control
  • Industrial Sensors and Process Control

Description

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. MAX17670, MAX17671, and MAX17672 are dual-output regulators integrating a 4V to 60V, 150mA high-voltage, high-efficiency, Himalaya synchronous step-down converter with internal MOSFETs and a high-PSRR, low-noise, 2.35V to 5.5V, 50mA linear regulator. The MAX17670 and MAX17671 provide fixed step-down converter output voltages of 3.3V and 5V, respectively. The output voltage of the MAX17672 step-down converter is adjustable (0.8V up to 90% of VIN). 3.3V (MAX17671 and MAX17672 only), 3.0V, 2.5V, 1.8V, 1.5V, and 1.2V linear regulator output voltage options are supported.

The feedback-voltage regulation accuracy over -40°C to +125°C temperature range for the linear regulator is ±1.3% and for the step-down converter is ±2%. The devices are available in a compact 10-pin (3mm x 3mm) TDFN package. Simulation models are available.

Simplified Block Diagram

MAX17670, MAX17671, MAX17672: Simplified Application Circuit MAX17670, MAX17671, MAX17672: Simplified 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 .