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Maxim Integrated MAX17501G

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

Overview

TopologyOther Topology
Switching frequency560-640 kHz
IC revision5

Description

The MAX17501 high-efficiency, high-voltage, synchro nous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. It delivers output currents up to 500mA at output voltages of0.9V to 92%VIN . 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 anoutput enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired inputvoltage level. An open-drain RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.

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 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 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 RESET Pin)
  • Resistor-Programmable EN/UVLO Threshold
  • Adjustable Soft-Start and Prebiased Power-Up
  • -40°C to+125°C Industrial Temperature Range

Typical applications

  • HVACandBuildingControl
  • Automotive
  • General-PurposePoint-of-Load
  • Battery-PoweredEquipment
  • HomeTheatre
  • IndustrialProcessControl
  • BaseStation,VOIP,Telecom

Products

Order Code Data­sheet Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
L1
(µH)
L2
(µH)
IR 1
(A)
IR 2
(A)
ISAT 1
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres 1
(MHz)
PinsRowsGenderTypeIR
(A)
Packaging Samples
150060VS75000SPEC
7 files WL-SMCW SMT Mono-color Chip LED Waterclear 570 Bright Green 572 40 2 AlInGaP 140 Tape and Reel
150060SS75000SPEC
7 files WL-SMCW SMT Mono-color Chip LED Waterclear 630 Super Red 645 60 1.9 AlInGaP 140 Tape and Reel
74489430220SPEC
6 files WE-TDC SMT Shielded Coupled Inductor 22 22 0.7 0.7 1.1 0.435 0.435 0.48 0.48 17 0.7
61300111121SPEC
6 files WR-PHD 2.54 mm THT Pin Header 1 Single Pin Header Straight 3 Bag
61300211121SPEC
6 files WR-PHD 2.54 mm THT Pin Header 2 Single Pin Header Straight 3 Bag
Samples
Order Code Data­sheet Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
L1
(µH)
L2
(µH)
IR 1
(A)
IR 2
(A)
ISAT 1
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres 1
(MHz)
PinsRowsGenderTypeIR
(A)
Packaging Samples