MAX5949BESA datasheet, PDF - EEWORLD Datasheet

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MAX5949BESA: DescriptionHot Swap Voltage Controllers 48V- Hot-Swap Controller; CategoryPower/power management The power supply circuit; File Size193KB，18 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX5949BESA Overview

Hot Swap Voltage Controllers 48V- Hot-Swap Controller

MAX5949BESA Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Maxim
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Reach Compliance Code	not_compliant
ECCN code	EAR99
Adjustable threshold	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.9 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	245
power supply	48 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply current (Isup)	2 mA
Maximum supply voltage (Vsup)	80 V
Minimum supply voltage (Vsup)	20 V
Nominal supply voltage (Vsup)	48 V
surface mount	YES
technology	BICMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.9 mm

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19-3494; Rev 1; 8/11

-48V Hot-Swap Controllers

with External R

SENSE

General Description

The MAX5949A/MAX5949B are hot-swap controllers that

allow a circuit card to be safely hot plugged into a live

backplane. The MAX5949A/MAX5949B operate from

-20V to -80V and are well-suited for -48V power systems.

These devices are pin and function compatible with the

LT4250 and pin compatible with the LT1640.

The MAX5949A/MAX5949B provide a controlled turn-on

to circuit cards preventing glitches on the power-supply

rail and damage to board connectors and components.

The MAX5949A/MAX5949B provide undervoltage, over-

voltage, and overcurrent protection. These devices

ensure the input voltage is stable and within tolerance

before applying power to the load.

Both the MAX5949A and MAX5949B protect a system

against overcurrent and short-circuit conditions by turn-

ing off the external MOSFET in the event of a fault con-

dition. The MAX5949A/MAX5949B also provide

protection against input voltage steps. During an input

voltage step, the MAX5949A/MAX5949B limit the cur-

rent drawn by the load to a safe level without turning off

power to the load.

Both devices feature an open-drain power-good status

output (PWRGD for the MAX5949A or PWRGD for the

MAX5949B) that can be used to enable downstream

converters.

The MAX5949A/MAX5949B are available in an 8-pin SO

package. Both devices are specified for the extended

-40°C to +85°C temperature range.

Features

Allow Safe Board Insertion and Removal

from a Live -48V Backplane

Pin and Function Compatible with LT4250L

(MAX5949A)

Pin Compatible with LT1640L (MAX5949A)

Pin and Function Compatible with LT4250H

(MAX5949B)

Pin Compatible with LT1640H (MAX5949B)

Circuit-Breaker Immunity to Input Voltage Steps

and Current Spikes

Withstand -100V Input Transients with No

External Components

Programmable Inrush and Short-Circuit Current

Limits

Operate from -20V to -80V

Programmable Overvoltage Protection

Programmable Undervoltage Lockout

Power Up into a Shorted Load

Power-Good Control Output

MAX5949A/MAX5949B

Ordering Information

PART

MAX5949AESA+

MAX5949BESA+

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 SO

Applications

Telecom Line Cards

Network Switches/Routers

Central-Office Line Cards

Server Line Cards

Base-Station Line Cards

Central-Office Switching

-48V Distributed Power Systems

Negative Power-Supply Controls

+Denotes

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

Pin Configuration

TOP VIEW

DRAIN

GATE

SENSE

PWRGD

(PWRGD)

MAX5949A

MAX5949B

Typical Operating Circuit and Selector Guide appear at end

of data sheet.

( ) FOR MAX5949B.

________________________________________________________________

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.

MAX5949BESA Related Products

	MAX5949BESA	MAX5949AESA	MAX5949AESA-T	MAX5949BESA-T
Description	Hot Swap Voltage Controllers 48V- Hot-Swap Controller	Hot Swap Voltage Controllers -48V Hot-Swap Controllers with External RSENSE	Hot Swap Voltage Controllers	Hot Swap Voltage Controllers
Is it lead-free?	Contains lead	Contains lead	Contains lead	Contains lead
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible
Maker	Maxim	Maxim	Maxim	Maxim
Parts packaging code	SOIC	SOIC	SOIC	SOIC
package instruction	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25
Contacts	8	8	8	8
Reach Compliance Code	not_compliant	not_compliant	not_compliant	not_compliant
ECCN code	EAR99	EAR99	EAR99	EAR99
Adjustable threshold	YES	YES	YES	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
JESD-609 code	e0	e0	e0	e0
length	4.9 mm	4.9 mm	4.9 mm	4.9 mm
Number of channels	1	1	1	1
Number of functions	1	1	1	1
Number of terminals	8	8	8	8
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	SOP	SOP
Encapsulate equivalent code	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	245	245	245	245
power supply	48 V	48 V	48 V	48 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.75 mm	1.75 mm	1.75 mm	1.75 mm
Maximum supply current (Isup)	2 mA	2 mA	2 mA	2 mA
Maximum supply voltage (Vsup)	80 V	80 V	80 V	80 V
Minimum supply voltage (Vsup)	20 V	20 V	20 V	20 V
Nominal supply voltage (Vsup)	48 V	48 V	48 V	48 V
surface mount	YES	YES	YES	YES
technology	BICMOS	BICMOS	BICMOS	BICMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
width	3.9 mm	3.9 mm	3.9 mm	3.9 mm

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