MAX8794ETB(2006) 查看數據表（PDF） - Maxim Integrated

零件编号

产品描述 (功能)

生产厂家

MAX8794ETB
(Rev.:2006)

Low-Voltage DDR Linear Regulator

Maxim Integrated 

19-0584; Rev 0; 8/06

EVAALVUAAILTAIOBNLEKIT

Low-Voltage DDR Linear Regulator

General Description

The MAX8794 DDR linear regulator sources and sinks up

to 3A peak (typ) using internal n-channel MOSFETs. This

linear regulator delivers an accurate 0.5V to 1.5V output

from a low-voltage power input (VIN = 1.1V to 3.6V). The

MAX8794 uses a separate 3.3V bias supply to power the

control circuitry and drive the internal n-channel MOSFETs.

The MAX8794 provides current and thermal limits to pre-

vent damage to the linear regulator. Additionally, the

MAX8794 generates a power-good (PGOOD) signal to

indicate that the output is in regulation. During startup,

PGOOD remains low until the output is in regulation for 2ms

(typ). The internal soft-start limits the input surge current.

The MAX8794 powers the active-DDR termination bus

that requires a tracking input reference. The MAX8794

can also be used in low-power chipsets and graphics

processor cores that require dynamically adjustable

output voltages. The MAX8794 is available in a 10-pin,

3mm x 3mm, TDFN package.

Applications

Notebook/Desktop Computers

DDR Memory Termination

Active Termination Buses

Graphics Processor Core Supplies

Chipset/RAM Supplies as Low as 0.5V

Features

♦ Internal Power MOSFETs with Current Limit (3A typ)

♦ Fast Load-Transient Response

♦ External Reference Input with Reference

Output Buffer

♦ 1.1V to 3.6V Power Input

♦ ±15mV (max) Load-Regulation Error

♦ Thermal-Fault Protection

♦ Shutdown Input

♦ Power-Good Window Comparator with 2ms (typ)

Delay

♦ Small, Low-Profile, 10-Pin, 3mm x 3mm TDFN

Package

♦ Ceramic or Polymer Output Capacitors

Ordering Information

PART

TEMP PIN-

RANGE PACKAGE

TOP

MARK

MAX8794ETB+

-40°C to

+85°C

10 TDFN

(3mm x 3mm)

ABD

+Denotes lead-free package.

PKG

CODE

T1033-1

Pin Configuration

TOP VIEW

REFOUT 1

VCC 2

AGND 3

REFIN 4

PGOOD 5

MAX8794

10 IN

9 OUT

8 PGND

7 SHDN

6 OUTS

TDFN

3mm x 3mm

Typical Operating Circuit

VIN

(1.1V TO 3.6V)

IN

OUT

OUTS

VOUT = VTT

VBIAS

(2.7V TO 3.6V)

VDDQ

(2.5V OR 1.8V)

MAX8794

VCC

PGND

SHDN

AGND

PGOOD

REFIN

REFOUT

VREFOUT = VTTR

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Share Link: