MAX17501

60V, 500mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter

60V Synchronous Buck Converter with Internal FETs Enables High Efficiency


Please check latest availability status for a specific part variant.

Description

The MAX17501 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. This device is offered in a fixed 3.3V , 5V or adjustable output voltage (0.9V to 92%VIN) while delivering up to 500mA of current. The output voltage is accurate to within ±1.7% over -40°C to +125°C. The MAX17501 is available in a compact TDFN package. Simulation models are available.

The device features peak-current-mode control with pulse-width modulation (PWM). Users can choose devices with either pulse frequency modulation (PFM) or forced PWM scheme. PFM devices skip pulses at light load for higher efficiency, while forced-PWM devices operate with fixed switching frequency at any load for noise sensitive-applications. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout.

A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.

MAX17501: Typical Operating Circuit MAX17501: Typical Operating Circuit Enlarge+

Key Features

  • Eliminates External Components and Reduce Total Cost
    • No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
    • Internal Compensation and Feedback Divider for 3.3V and 5V Fixed Outputs
    • All-Ceramic Capacitors, Ultra-Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input Voltage Range
    • 0.9V to 92%VIN Adjustable Output Voltage
    • Delivers up to 500mA
    • 600kHz and 300kHz Switching Frequency Options
    • Available in a 10-Pin, 3mm x 2mm TDFN Package
  • Reduces Power Dissipation
    • Peak Efficiency > 90%
    • PFM Feature for High Light-Load Efficiency
    • Shutdown Current = 0.9µA (typ)
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Current Limit, Sink Current Limit, and Autoretry Startup
    • Built-In Output-Voltage Monitoring (Open-Drain Active-Low RESET Pin)
    • Resistor-Programmable EN/UVLO Threshold
    • Adjustable Soft-Start and Prebiased Power-Up
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

Applications/Uses

  • Base Station, VOIP, Telecom
  • Battery-Powered Equipment
  • General-Purpose Point-of-Load
  • Home Theater
  • HVAC and Building Control
  • Industrial Process Control
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17501 4.5600.955
3.3
5
Preset
Resistor
0.5InternalYes1600EE-Sim
TDFN/10
TSSOP/14
$1.60 @1k
See All Step-Down Switching Regulators (404)
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.


MAX17501BTEVKIT: Evaluation Kit for the MAX17501B and MAX17501F
MAX17501FTEVKIT: Evaluation Kit for the MAX17501B and MAX17501F
MAX17501ATEVKIT: Evaluation Kit for the MAX17501A and MAX17501E
MAX17501ETEVKIT: Evaluation Kit for the MAX17501A and MAX17501E
MAX17501HTEVKIT: Evaluation Kit for the MAX17501H
MAX17501GTEVKIT: Evaluation Kit for the MAX17501G
MAX17501GTEVKITE: Evaluation Kit for the MAX17501 in TDFN Package

Tools & Models

  • EE-Sim: Design & Simulate MAX17501
  • MAX17501 SIMPLIS Schematic
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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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