MAX17671

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

Highly Integrated Industrial PMIC Enables Small Solution Size


Please check latest availability status for a specific part variant.

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.

MAX17670, MAX17671, MAX17672: Simplified Application Circuit MAX17670, MAX17671, MAX17672: Simplified Application Circuit Enlarge+

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

See parametric specs for Step-Down Switching Regulators (408)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17670 4600.854-Preset or Adj0.15Internal---200EE-Sim
TDFN-CU/10
$1.45 @1k
MAX17671 555PresetYesYes1
200
212.5
220
250
300
330
400
440
450
490
500
550
560
600
700
800
900
1200
1250
1700
TDFN-CU/10
$1.52 @1k
MAX17672 0.854-Preset or AdjYesYes1200
TDFN-CU/10
$1.45 @1k

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.

MAX17671FEVKIT: Evaluation Kit for the MAX17671 5V Step-Down Converter and 3.3V Linear Regulator Output Voltage Application
MAX17670EEVKIT: Evaluation Kit for the MAX17670 3.3V Step-Down Converter Output Voltage and 3.0V Linear Regulator Output Voltage Application
MAX17672CEVKIT: Evaluation Kit for the MAX17672 5V Buck Output Voltage and 1.8V Linear Regulator Output Voltage

Tools & Models

  • EE-Sim: Design & Simulate MAX17671
  • MAX17671 SIMPLIS Schematic
  • Request Reliability Report for: MAX17671 
    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:
    Package:
    Temperature:

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    Type ID Title
    Evaluation Board9952MAX17671FEVKIT Evaluation Kit for the MAX17671 5V Step-Down Converter and 3.3V Linear Regulator Output Voltage Application
    Evaluation Board10426MAX17672CEVKIT Evaluation Kit for the MAX17672 5V Buck Output Voltage and 1.8V Linear Regulator Output Voltage
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