MAX17761
PRODUCTION4.5V to 76V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter
76V Synchronous Buck Converter with Internal FETs Enables High Efficiency and Low Temperature Rise
- Part Models
- 2
- 1ku List Price
- Starting From $2.22
Overview
- Reduces External Components and Total Cost
- No Schottky—Synchronous Operation
- Internal Compensation Components
- All-Ceramic Capacitors, Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 76V Input
- Output Adjustable from 0.8V up to 90% of VIN
- Delivers up to 1A Over Temperature
- 200kHz to 600kHz Adjustable Frequency with External Clock Synchronization
- Programmable Current Limit
- Reduces Power Dissipation
- Peak Efficiency > 90%
- PFM Mode Enables Enhanced Light-Load Efficiency
- Auxiliary Bootstrap LDO for Improved Efficiency
- 5μA Shutdown Current
- Operates Reliably in Adverse Industrial Environments
- Adjustable Soft-Start and Prebiased Power-Up
- Built-in Output-Voltage Monitoring with Active-low RESET
- 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
The MAX17761, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 76V input. The converter can deliver up to 1A current. Output voltage is programmable from 0.8V up to 90% of VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.5%.
The device features a peak-current-mode control architecture and can be operated in either the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes.
The MAX17761 is available in a 12-pin (3mm x 3mm) TDFN package. Simulation models are available.
Applications
- Basestation Power Supplies
- Distributed Supply Regulation
- General-Purpose Point-of-Load
- High-Voltage, Single-Board Systems
- Industrial Control Power Supplies
- Wall Transformer Regulation
Documentation
Data Sheet 1
Evaluation Design File 2
Video 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX17761ATC+ | Thin Dual Flatpack No Leads | ||
| MAX17761ATC+T | Thin Dual Flatpack No Leads |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- MAX17761
ADI Power Studio™ Designer
ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.
Learn MoreSIMPLIS Models 1
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Evaluation Kit for the MAX17761 in 5V Output-Voltage Application
Resources
Evaluation Kit for the MAX17761 in 5V Output-Voltage Application
Evaluation Kit for the MAX17761 in 3.3V Output-Voltage Application
Resources
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