Datasheet MAX17579, MAX17580 (Analog Devices)

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MAX17579/MAX17580 4.5V to 60V, 300mA High-Efficiency, Synchronous, Inverting Output DC-DC Converters General Description Benefits and Features
The Himalaya series of voltage regulator ICs, power mod- ● Reduces External Components and Total Cost ules, and chargers enable cooler, smaller, and simpler • Synchronous Operation power-supply solutions. The MAX17579 and MAX17580 • All-Ceramic Capacitors, Compact Layout are high-efficiency, high-voltage, inverting, Himalaya syn- • Internal Loop Compensation chronous DC-DC converters with integrated MOSFETs • System Ground Referenced I/O Pins (EN/UVLO, and internal compensation. The devices generate output RESET) voltages (VOUT) from -0.9V to -36V and can deliver up to ● Flexibility to Support Multiple Rails in a System 300mA of load current from a wide 4.5V to (60V-|VOUT|) • Adjustable Output Voltage Range from -0.9V to input-voltage range. -36V The devices feature peak current-mode control architec- • Wide 4.5V to (60V-|VOUT|) Input-Voltage Range ture. The MAX17579 operates in continuous conduction • Up to 300mA Output Current mode (CCM) at all loads, thus, providing a constant fre- • 400kHz to 2.2MHz Adjustable Frequency with quency operation. The MAX17580 operates in discontinu- External Clock Synchronization ous conduction mode (DCM) for superior efficiency at light ● Reduces Power Dissipation loads. Low minimum on-time allows higher switching fre- • 88.4% Peak Efficiency quencies and small solution sizes. • DCM for Superior Light-Load Efficiency The devices allow the EN/UVLO, RESET and RT/SYNC • 6.2μA Shutdown Current pins to be driven by signals that are referenced to system ● Operates Reliably in Adverse Industrial Environments ground, eliminating the need for external-level shifter cir- • Hiccup-Mode Overload Protection cuits. The feedback-voltage regulation accuracy is ±1.3% • Adjustable Soft-Start over a wide -40°C to +125°C temperature range. The de- • Monotonic Startup with Prebiased Output Voltage vices are available in a compact 12-pin (3mm x 3mm) • Built-in Output Voltage Monitoring with RESET TDFN-EP package. Simulation models are available. • Programmable EN/UVLO Threshold • Overtemperature Protection
Applications
• Wide -40°C to +125°C Ambient Operating ● Industrial Control Power Supply Temperature Range / -40°C to +150°C Junction ● General Purpose Point-of-Load Temperature Range ● Gate-Drive Circuits ● Motion Control ● Wall-Transformer Regulation ● High-Voltage, Single-Board System
Simplified Application Circuit
VIN IN RESET EN/UVLO BST
MAX17579/ MAX17580
RT/SYNC LX VCC FB FB SS GND FB SOUT EP OUT VOUT
Ordering Information
appears at end of data sheet. 19-101006; Rev 1; 4/22 © 2022 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. | Tel: 781.329.4700 | © 2022 Analog Devices, Inc. All rights reserved. Document Outline General Description Applications Benefits and Features Simplified Application Circuit Absolute Maximum Ratings Package Information TDFN-EP Electrical Characteristics Electrical Characteristics (continued) Typical Operating Characteristics Typical Operating Characteristics (continued) Pin Configuration MAX17579, MAX17580 Pin Description Functional Diagrams MAX17579/MAX17580 Block Diagram Detailed Description Switching Frequency and External Clock Synchronization Linear Regulator (VCC) Operating Input-Voltage Range Overcurrent Protection (OCP)/Hiccup Mode RESET Output Prebiased Output Thermal-Shutdown Protection Applications Information Inductor Selection Load Current Capability (IOUT(MAX)) Input Capacitor Selection Output Capacitor Selection Soft-Start Capacitor Selection Adjusting Output Voltage Setting the Input Undervoltage-Lockout Level Soft-Start Inductive Output Short-Circuit Protection Power Dissipation PCB Layout Guidelines Typical Application Circuits -5V Typical Application Circuits Typical Application Circuits (continued) -15V Typical Application Circuit Ordering Information Revision History