MAX8833 Maxim Integrated Products, MAX8833 Datasheet

MAX8833

Manufacturer Part Number

MAX8833

Description

2MHz Step-Down Regulator

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX8833.pdf (21 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX8833ETJ+

Manufacturer:

Maxim Integrated Products

Quantity:

620

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The MAX8833 high-efficiency, dual step-down regulator

is capable of delivering up to 3A at each output. The

device operates from a 2.35V to 3.6V supply, and pro-

vides output voltages from 0.6V to 0.9 x V

ideal for on-board point-of-load applications. Total output

error is less than ±1% over load, line, and temperature.

The MAX8833 operates in PWM mode with a switching

frequency ranging from 0.5MHz to 2MHz, set by an

external resistor. It can also be synchronized to an

external clock in the same frequency range. Two inter-

nal switching regulators operate 180° out-of-phase to

reduce the input ripple current, and consequently

reduce the required input capacitance. The high

operating frequency minimizes the size of external

components. High efficiency, internal dual-nMOS

design keeps the board cool under heavy loads. The

voltage-mode control architecture and the high-band-

width (> 15MHz typ) voltage-error amplifier allow a type

III compensation scheme to be utilized to achieve fast

response under both line and load transients, and also

allow for ceramic output capacitors.

Programmable soft-start reduces input inrush current.

Two enable inputs allow the turning on/off of each out-

put individually, resulting in great flexibility for system-

level designs. A reference input is provided to facilitate

output-voltage tracking applications. The MAX8833 is

available in a 32-pin thin QFN (5mm x 5mm) package

with 0.8mm max height.

19-0725; Rev 0; 8/07

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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________________________________________________________________ Maxim Integrated Products

General Description

Dual, 3A, 2MHz Step-Down Regulator

Applications

, making it

o 35mΩ On-Resistance Internal MOSFETs

o Dual, 3A, PWM Step-Down Regulators

o Fully Protected Against Overcurrent,

o ±1% Output Accuracy over Load, Line,

o Operates from 2.35V to 3.6V Supply

o REFIN on One Channel for Tracking or

o Integrated Boost Diodes

o Adjustable Output from 0.6V to 0.9 x V

o Soft-Start Reduces Inrush Supply Current

o 0.5MHz to 2MHz Adjustable Switching,

o All-Ceramic-Capacitor Design

o 180° Out-of-Phase Operation Reduces Input

o Individual Enable Inputs and PWRGD Outputs

o Available in 5mm x 5mm Thin QFN Package

Note: The device is specified over the -40°C to +85°C extended

temperature range.

+ Denotes a lead-free package.

MAX8833ETJ+

Short Circuit, and Overtemperature

and Temperature

External Reference

or FSYNC Input

Ripple Current

OUTPUT1

1.2V / 3A

OFF

PART

TYPE III

COMPENSATION

2.35V TO 3.6V

INPUT1

Typical Operating Circuit

PIN-PACKAGE

32 Thin QFN

(5mm x 5mm)

Ordering Information

LX1

PGND1

FB1

PWRGD1 PWRGD2

EN1

BST1

COMP1

MAX8833

IN1 IN2

GND

COMP2

PGND2

BST2

EN2

LX2

FB2

TYPE III

COMPENSATION

INPUT2

2.35V TO 3.6V

OFF

Features

PKG CODE

T3255-4

OUTPUT2

1.5V / 3A

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