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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 232kB) Download   E-Mail

Description

The MAX1624/MAX1625 are ultra-high-performance, step-down DC-DC controllers for CPU power in high-end computer systems. Designed for demanding applications in which output voltage precision and good transient response are critical for proper operation, they deliver over 35A from 1.1V to 3.5V with ±1% total accuracy from a +5V ±10% supply. Excellent dynamic response corrects output transients caused by the latest dynamically clocked CPUs. These controllers achieve over 90% efficiency by using synchronous rectification. Flying-capacitor bootstrap circuitry drives inexpensive, external N-channel MOSFETs. The switching frequency is resistor programmable from 100kHz to 1MHz. High switching frequencies allow the use of a small surface-mount inductor and decrease output filter capacitor requirements, reducing board area and system cost. The MAX1624 is available in a 24-pin SSOP and offers additional features such as a digitally programmable output in 100mV increments; adjustable transient response; selectable 0.5%, 1%, or 2% AC load regulation; and gate drive for a current-boost MOSFET. The MAX1625 is resistor adjustable and comes in a 16-pin narrow SO package. Other features in both controllers include internal digital soft-start, a power-good output, and a 3.5V ±1% reference output. For a similar controller compatible with the latest Intel® VRM/VID specification, see the MAX1638 data sheet.

An evaluation kit is available:  MAX1624EVKIT   MAX1625EVKIT  

Key Features		Applications/Uses
Better than ±1% Output Accuracy Over Line and Load 90% Efficiency Excellent Transient Response Resistor-Programmable Fixed Switching Frequency from 100kHz to 1MHz Over 35A Output Current Digitally Programmable Output from 1.1V to 3.5V in 100mV Increments (MAX1624) Resistor-Adjustable Output down to 1.1V (MAX1625) Remote Sensing Adjustable AC Loop Gain (MAX1624) GlitchCatcher™ Circuit for Fast Load-Transient Response (MAX1624) Power-Good (PWROK) Output Current-Mode Feedback Digital Soft-Start Strong 2A Gate Drivers Current-Limited Output		Computers: Desktop, Workstation, Server GTL Bus Termination Industrial Computers LAN Servers Pentium®

Diagram

Typical Operating Circuit

Evaluation Kits

MAX1624EVKIT MAX1625EVKIT

Reliability Reports

Show FIT data for: MAX1624 MAX1625 Request Reliability Report for: MAX1624 MAX1625

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX1624	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1624EAG			Active	SSOP;24 pin;65.8 mm² Outline Drawing: 21-0056 (PDF) Land Pattern: 90-0110 (PDF) Use pkgcode/variation: A24-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1624EAG-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1624EAG+			Active	SSOP;24 pin;65.8 mm² Outline Drawing: 21-0056 (PDF) Land Pattern: 90-0110 (PDF) Use pkgcode/variation: A24+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1624EAG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1625	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1625ESE			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1625ESE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1625ESE+			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1625ESE+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes and Comments

High-accuracy Pentium Pro VID programming, power-good output (MAX1624) High accuracy, power-good output (MAX1625)

Related Products

MAX1638 High-Speed Step-Down Controller with Synchronous Rectification for CPU Power MAX1639 High-Speed Step-Down Controller with Synchronous Rectification for CPU Power More Like This: View Product Families for Similar Products See All Step-Down Switching Regulators (273 Products)

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