MAX17620
PRODUCTION4MHz, Miniature 600mA, Synchronous Step-Down DC-DC Converter with Integrated MOSFETs
High-Efficiency Synchronous Buck Regulator Offers Balance of High Performance, Wide Temperature Range, and Small Size
- Part Models
- 2
- 1ku List Price
- Starting From $1.05
Overview
- Minimizes External Components, Reducing Total Cost
- Synchronous Operation for High Efficiency and Reduced Cost
- Internal Compensation for Stable Operation at Any Output Voltage
- All-Ceramic Capacitor Solution
- 4MHz Operation
- Only 5 External Components Required
- Total Solution Size is 12mm2 (Sum of the Components Area)
- Reduces Number of DC-DC Regulators to Stock
- Wide 2.7V to 5.5V Input Voltage Range
- Adjustable 1.5V to 100% VIN Output Voltage Range
- Delivers Up to 600mA Load Current
- 100% Duty-Cycle Operation
- +1%/-0.75% Reference Voltage Accuracy
- Available in a 2mm x 2mm TDFN Package
- Reduces Power Dissipation
- Peak Efficiency 91%
- Skip Mode for High Light-Load Efficiency
- Shutdown Current = 0.1µA
- Operates Reliably
- Peak Current-Limit Protection
- Soft-Start Reduces Inrush Current During Startup
- Built-In Output-Voltage Monitoring (Open-Drain PGOOD Pin)
- -40°C to +125°C Operation
The MAX17620 is a high-frequency, high-efficiency synchronous step-down DC-DC converter with integrated MOSFETs that operates over a 2.7V to 5.5V input voltage range. The device supports up to 600mA load current and 1.5V to 100% VIN output voltage. High-frequency operation enables the use of small, low-cost inductors and capacitors.
The device features selectable PWM/skip mode of operation at light loads and operates at a 4MHz fixed-frequency in PWM mode. Skip mode improves system efficiency at light loads, while PWM mode maintains a constant switching frequency over the entire load. In skip mode, the device draws only 40µA of quiescent current from the supply input. In shutdown mode, the current consumption is reduced to 0.1µA.
The device also features a soft-start feature to reduce the inrush current during startup, and also incorporates an enable (EN) pin to turn on/off the device. An open-drain PGOOD pin provides power-good signal to the system upon achieving successful regulation of the output voltage.
The MAX17620 is available in an 8-pin, 2mm x 2mm TDFN package and operates over the -40°C to +125°C temperature range.
Applications
- Battery-Powered Instruments
- Distributed Power Systems
- Point-of-Load Power Supply
- Standard 5V Rail Supplies
Documentation
Data Sheet 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 |
|---|---|---|---|
| MAX17620ATA+ | LFCSP | ||
| MAX17620ATA+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571D PIN/ERRATA |
||
| MAX17620ATA+ | PRODUCTION | |
| MAX17620ATA+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Evaluation Kits
Evaluation Kit for the MAX17620