Maxim > Products > Power and Battery Management > MAX8523

MAX8523

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters

Highest Accuracy, Scalable, VRD/VRM-10 Power Chipset Reduces Capacitance by 60% in Servers and Desktops

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX8523 dual-phase gate driver, along with the MAX8524/MAX8525 multiphase controllers, provides flexible 2- to 8-phase CPU core-voltage supplies. The 0.5Ω/0.95Ω driver resistance allows up to 30A output current per phase.

Each MOSFET driver in the MAX8523 can drive 3000pF capacitive loads with only 15ns propagation delay and 11ns typical rise and fall times, allowing operations up to 1.2MHz per phase. Adaptive dead time controls low-side MOSFET turn-on, and user-programmable dead time controls high-side MOSFET turn-on. This maximizes converter efficiency while allowing operation with a variety of MOSFETs and controller ICs. An undervoltage lockout (UVLO) circuit allows proper power-on sequencing. PWM_ signal inputs are TTL and CMOS compatible.

The MAX8523 is available in a space-saving 16-pin QSOP package and specified for -40°C to +85°C operation.

Data Sheet

Download	Rev 0	(PDF, 220kB)
E-Mail

Key Features

6A Peak Gate-Drive Current
Up to 1.2MHz Operation
Up to 6.5V Gate-Drive Voltage
0.5Ω /0.95Ω Low-Side Drivers
Capable of 30A Output per Phase
Adaptive Shoot-Through Protection
User-Programmable Delay Time
TTL and CMOS Input Compatible
UVLO for Proper Sequencing
Flexible 2- to 8-Phase Implementation with MAX8524 and MAX8525
Space-Saving (4.9mm x 6mm) 16-Pin QSOP Package

Applications/Uses

Core Voltage Supplies for Pentium® IV Microprocessors
DC-to-DC Regulator Modules
Desktop Computers
Servers and Workstations
Switches, Routers, and Storage
Voltage Regulator Modules (VRMs)

Key Specifications:

Step-Down Switching Regulators

Part Number

V_IN
(V)

Max. I_OUT
(A)

DC-DC Outputs

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

≤

max w/pins

See Notes

MAX8523

4.5

13.2

QSOP/16

30.9

$0.93 @1k

See All Step-Down Switching Regulators (288)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

More Information

New Product Press Release

[ 2003-10-20 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2860 Rev 0; 2003-05-19
This page last modified: 2008-02-21