MAX8855AETJ+T datasheet, PDF - EEWORLD Datasheet

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MAX8855AETJ+T: Descriptionvoltage regulators - switching regulators dual 5A 2mhz step-down regulator; CategoryPower/power management The power supply circuit; File Size287KB，20 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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MAX8855AETJ+T Overview

voltage regulators - switching regulators dual 5A 2mhz step-down regulator

MAX8855AETJ+T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Maxim
package instruction	HVQCCN,
Reach Compliance Code	compliant
ECCN code	EAR99
Factory Lead Time	21 weeks
Other features	OPERATES IN ADJUSTABLE MODE FROM 0.6V TO 3.24V
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER
control mode	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	3.6 V
Minimum input voltage	2.25 V
Nominal input voltage	3.3 V
JESD-30 code	S-XQCC-N32
length	5 mm
Number of functions	1
Number of terminals	32
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output current	9.6 A
Package body material	UNSPECIFIED
encapsulated code	HVQCCN
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height	0.8 mm
surface mount	YES
Switch configuration	PHASE-SHIFT
Maximum switching frequency	2200 kHz
technology	BICMOS
Temperature level	INDUSTRIAL
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
width	5 mm

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19-0726; Rev 4; 10/11

KIT

ATION

EVALU

BLE

AVAILA

Dual, 5A, 2MHz Step-Down Regulators

General Description

Features

27mΩ On-Resistance Internal MOSFETs

Dual, 5A, PWM Step-Down Regulators

Fully Protected Against Overcurrent,

Short Circuit, and Overtemperature

±1% Output Accuracy Over Load, Line,

and Temperature

Operates from 2.25V to 3.6V Supply

REFIN on One Channel for Tracking or

External Reference

Integrated Boost Diodes

Adjustable Output from 0.6V to 0.9 x V

Soft-Start Reduces Inrush Supply Current

0.5MHz to 2MHz Adjustable Switching,

or FSYNC Input

All-Ceramic-Capacitor Design

180° Out-of-Phase Operation Reduces Input

Ripple Current

Individual Enable Inputs and PWRGD Outputs

Safe-Start into Prebiased Output

Available in 5mm x 5mm Thin QFN Package

Sink/Source Current in DDR Applications

MAX8855/MAX8855A

The MAX8855/MAX8855A high-efficiency, dual step-down

regulators are capable of delivering up to 5A at each out-

put. The devices operate from a 2.25V to 3.6V supply, and

provide output voltages from 0.6V to 0.9 x V

, making them

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

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

The MAX8855/MAX8855A operate 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

internal 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 MAX8855/

MAX8855A are available in a 32-pin TQFN (5mm x 5mm)

package with 0.8mm max height.

Ordering Information

PART

MAX8855ETJ+

MAX8855AETJ+

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

32 TQFN-EP*

Applications

ASIC/CPU/DSP Power Supplies

DDR Power Supplies

Set-Top Box Power Supplies

Printer Power Supplies

Network Power Supplies

+Denotes

a lead(Pb)-free/RoHS-compliant package.

*EP

= Exposed pad.

Typical Operating Circuit

INPUT1

2.25V TO 3.6V

IN1 IN2

BST1

BST2

LX1

LX2

INPUT2

2.25V TO 3.6V

OUTPUT1

1.2V / 5A

OUTPUT2

1.5V / 5A

PGND1

PGND2

MAX8855/

MAX8855A

FB1

FB2

COMP1

TYPE III

COMPENSATION

COMP2

TYPE III

COMPENSATION

PWRGD1 PWRGD2

OFF

EN1

GND

EN2

OFF

Pin Configuration appears at end of data sheet.

________________________________________________________________

Maxim Integrated Products

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.

MAX8855AETJ+T Related Products

	MAX8855AETJ+T	MAX8855AETJ+	MAX8855ETJ+T
Description	voltage regulators - switching regulators dual 5A 2mhz step-down regulator	voltage regulators - switching regulators dual 5A 2mhz step-down regulator	voltage regulators - switching regulators dual 5A 2mhz step-down regulator
Is it Rohs certified?	conform to	conform to	conform to
Maker	Maxim	Maxim	Maxim
package instruction	HVQCCN,	HVQCCN, LCC32,.2SQ,20	QCCN, LCC32,.2SQ,20
Reach Compliance Code	compliant	compli	compliant
ECCN code	EAR99	EAR99	EAR99
Factory Lead Time	21 weeks	21 weeks	22 weeks
control mode	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE
JESD-30 code	S-XQCC-N32	S-XQCC-N32	S-PQCC-N32
Number of terminals	32	32	32
Maximum operating temperature	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C
Package body material	UNSPECIFIED	UNSPECIFIED	PLASTIC/EPOXY
encapsulated code	HVQCCN	HVQCCN	QCCN
Package shape	SQUARE	SQUARE	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER
surface mount	YES	YES	YES
Maximum switching frequency	2200 kHz	2200 kHz	1100 kHz
technology	BICMOS	BICMOS	BICMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	NO LEAD	NO LEAD	NO LEAD
Terminal pitch	0.5 mm	0.5 mm	0.5 mm
Terminal location	QUAD	QUAD	QUAD
Other features	OPERATES IN ADJUSTABLE MODE FROM 0.6V TO 3.24V	ALSO OPERATES IN ADJUSTABLE MODE FROM 0.6V TO 3.24V	-
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	-
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	-
Maximum input voltage	3.6 V	3.6 V	-
Minimum input voltage	2.25 V	2.3 V	-
Nominal input voltage	3.3 V	3.3 V	-
length	5 mm	5 mm	-
Number of functions	1	1	-
Maximum output current	9.6 A	9.6 A	-
Maximum seat height	0.8 mm	0.8 mm	-
Switch configuration	PHASE-SHIFT	PHASE-SHIFT	-
width	5 mm	5 mm	-
Is it lead-free?	-	Lead free	Lead free
Humidity sensitivity level	-	1	1
Encapsulate equivalent code	-	LCC32,.2SQ,20	LCC32,.2SQ,20
Peak Reflow Temperature (Celsius)	-	NOT SPECIFIED	225
Certification status	-	Not Qualified	Not Qualified
Maximum time at peak reflow temperature	-	NOT SPECIFIED	NOT SPECIFIED

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