MAX8554EEE datasheet, PDF - EEWORLD Datasheet

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MAX8554EEE: DescriptionSwitching Controllers; CategoryPower/power management The power supply circuit; File Size827KB，24 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX8554EEE Overview

Switching Controllers

MAX8554EEE Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Maxim
Parts packaging code	SSOP
package instruction	0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16
Contacts	16
Reach Compliance Code	not_compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	28 V
Minimum input voltage	4.5 V
Nominal input voltage	12 V
JESD-30 code	R-PDSO-G16
JESD-609 code	e0
length	4.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Encapsulate equivalent code	SSOP16,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	245
Certification status	Not Qualified
Maximum seat height	1.75 mm
surface mount	YES
Switch configuration	PUSH-PULL
Maximum switching frequency	550 kHz
technology	BICMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.9 mm

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19-3017; Rev 1; 5/05

4.5V to 28V Input, Synchronous PWM Buck Controllers

for DDR Termination and Point-of-Load Applications

General Description

The MAX8553 is a 4.5V to 28V input-voltage, synchro-

nous step-down controller that provides a complete

power-management solution for DDR memory. The

MAX8553 generates 1/2 V

REFIN

voltage for VTT and

VTTR. The VTT and VTTR tracking voltages are main-

tained within 1% of 1/2 V

REFIN

. The MAX8554 is a 4.5V to

28V input voltage, nontracking step-down controller with

a low 0.6V feedback threshold voltage. The MAX8553/

MAX8554 use Maxim’s proprietary Quick-PWM™ archi-

tecture for fast transient response and operate with

selectable pseudo-fixed frequencies. Both controllers

can operate without an external bias supply.

The controllers operate in synchronous-rectification mode

to ensure balanced current sourcing and sinking capabili-

ty of up to 25A. The MAX8553/MAX8554 also provide up

to 95% efficiency, making them ideal for server and point-

of-load applications. Additionally, a low 5µA shutdown

current allows for longer battery life in notebook applica-

tions. Lossless current monitoring is achieved by monitor-

ing the low-side MOSFET’s drain-to-source voltage. The

MAX8553/MAX8554 have an adjustable foldback current

limit to withstand a continuous output overload and short

circuit. Digital soft-start provides control of inrush current

during power-up. Overvoltage protection shuts the con-

verter down and discharges the output capacitor. The

MAX8553/MAX8554 come in space-saving 16-pin QSOP

packages.

♦

Up to 25A Output-Current Capability

♦

Quick-PWM Control for Fast Loop Response

♦

Up to 95% Efficiency

♦

4.5V to 28V Input Voltage Range

♦

No External Bias Supply Required

♦

0 to 3.6V Input REFIN Range (MAX8553)

♦

Automatically Sets VTT and VTTR to within

±1%

of 1/2 V

REFIN

- (MAX8553)

♦

Low 0.6V Feedback Threshold (MAX8554)

♦

200kHz/300kHz/400kHz/550kHz Selectable

Switching Frequencies

♦

Adjustable Foldback Current Limit

♦

Overvoltage Protection

♦

Digital Soft-Start

Features

MAX8553/MAX8554

Typical Operating Circuit

VIN

+5V

EN/HSD

Applications

Wide-Input Power Supplies

Servers and Storage Applications

ASIC and CPU Core Voltages

Notebook and LCD-PC Power Supplies

DDR I and DDR II Memory Power Supplies

AGTL Bus Termination Supplies

POK

REFIN

MAX8553

REFIN

V+

BST

VOUT

V+

REF

Ordering Information

PART

MAX8553EEE

MAX8554EEE

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

16 QSOP

ILIM

FSEL

GND

PGND

VTT

VTTR

Pin Configurations appear at end of data sheet.

Quick-PWM is a trademark of Maxim Integrated Products, Inc.

________________________________________________________________

Maxim Integrated Products

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.

MAX8554EEE Related Products

	MAX8554EEE	MAX8553EEE-T	MAX8554EEE-T	MAX8553EEE+	MAX8553EEE+T
Description	Switching Controllers	Switching Controllers	Switching Controllers	Switching Controllers 4.5-28V Input Synch Buck Controller	Switching Controllers 4.5-28V Input Synch Buck Controller
Is it lead-free?	Contains lead	Contains lead	Contains lead	Lead free	Lead free
Is it Rohs certified?	incompatible	incompatible	incompatible	conform to	conform to
Maker	Maxim	Maxim	Maxim	Maxim	Maxim
Parts packaging code	SSOP	SSOP	SSOP	SSOP	SSOP
package instruction	0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16	0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16	0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16	SSOP, SSOP16,.25	SSOP, SSOP16,.25
Contacts	16	16	16	16	16
Reach Compliance Code	not_compliant	not_compliant	not_compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
control mode	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	28 V	28 V	28 V	28 V	28 V
Minimum input voltage	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Nominal input voltage	12 V	12 V	12 V	12 V	12 V
JESD-30 code	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16
JESD-609 code	e0	e0	e0	e3	e3
length	4.9 mm	4.9 mm	4.9 mm	4.9 mm	4.89 mm
Humidity sensitivity level	1	1	1	1	1
Number of functions	1	1	1	1	1
Number of terminals	16	16	16	16	16
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SSOP	SSOP	SSOP	SSOP	SSOP
Encapsulate equivalent code	SSOP16,.25	SSOP16,.25	SSOP16,.25	SSOP16,.25	SSOP16,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	245	240	240	260	260
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.73 mm
surface mount	YES	YES	YES	YES	YES
Switch configuration	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL
Maximum switching frequency	550 kHz	550 kHz	550 kHz	550 kHz	550 kHz
technology	BICMOS	BICMOS	BICMOS	BICMOS	BICMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.635 mm	0.635 mm	0.635 mm	0.635 mm	0.635 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
width	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm

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