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Analog Devices MAX17501G
60V, 500mA, Ultra-Small, High-Efficiency,Synchronous Step-Down DC-DC Converter
Overview
| Topology | Other Topology |
| Switching frequency | 560-640 kHz |
| IC revision | 5 |
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
- Automotive
- HVACandBuildingControl
- HomeTheatre
- IndustrialProcessControl
- BaseStation,VOIP,Telecom
- General-PurposePoint-of-Load
- Battery-PoweredEquipment
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | Pins | Type | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | L1(µH) | L2(µH) | n | IR(A) | IR 2(A) | ISAT(A) | ISAT1(A) | ISAT2(A) | RDC1 typ(mΩ) | RDC2 typ(mΩ) | RDC1 max(mΩ) | RDC2 max(mΩ) | fres 1(MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]570 nm | Emitting ColorBright Green | Peak Wavelength [typ.]572 nm | Luminous Intensity [typ.]40 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | ||||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Super Red | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]630 nm | Emitting ColorSuper Red | Peak Wavelength [typ.]645 nm | Luminous Intensity [typ.]60 mcd | Forward Voltage [typ.]1.9 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | MountSMT | Length1.6 mm | Height0.7 mm | – | – | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
 | WE-TDC SMT Shielded Coupled Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TDC SMT Shielded Coupled Inductor | – | – | – | – | – | – | – | – | – | – | Length8 mm | Height1.8 mm | Rated Current0.7 A | – | Operating Temperature -40 °C up to +125 °C | Inductance 122 µH | Inductance 222 µH | Turns Ratio1:1 | Rated Current0.7 A | Rated Current 20.7 A | Saturation Current1.1 A | Saturation Current 11.1 A | Saturation Current 21.1 A | DC Resistance 1435 mΩ | DC Resistance 2435 mΩ | DC Resistance 1480 mΩ | DC Resistance 2480 mΩ | Self Resonant Frequency [1]17 MHz | ||||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | Pins1 | TypeStraight | MountTHT | Length2.54 mm | – | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | Pins2 | TypeStraight | MountTHT | Length5.08 mm | – | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | – | – |