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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 696kB) Download   E-Mail

Description

The MAX5948A/MAX5948B are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane. The MAX5948A/MAX5948B operate from -20V to -80V and are well-suited for -48V power systems. The MAX5948A is pin- and function-compatible with both the LT1640AL and LT1640L. The MAX5948B is pin- and function-compatible with both the LT1640AH and LT1640H. The MAX5948A/MAX5948B provide a controlled turn-on to circuit cards preventing glitches on the power-supply rail and damage to board connectors and components. The MAX5948A/MAX5948B provide undervoltage, overvoltage, and overcurrent protection. These devices ensure the input voltage is stable and within tolerance before applying power to the load. Both the MAX5948A and MAX5948B protect a system against overcurrent and short-circuit conditions by turning off the external MOSFET in the event of a fault condition. Both devices feature an open-drain power-good status output, PWRGD-bar for MAX5948A or PWRGD for MAX5948B, that can be used to enable downstream converters. The MAX5948A/MAX5948B are available in an 8-pin SO package. Both devices are specified for the extended -40°C to +85°C temperature range.

Key Features		Applications/Uses
Allow Safe Board Insertion and Removal from a Live -48V Backplane Pin- and Function-Compatible with LT1640AL/LT1640L (MAX5948A) Pin- and Function-Compatible with LT1640AH/LT1640H (MAX5948B) Withstand -100V Input Transients with No External Components Operate from -20V to -80V Programmable Inrush and Short-Circuit Current Limits Programmable Overvoltage Protection Programmable Undervoltage Lockout Power Up into a Shorted Load Power-Good Control Output		Base-Station Line Cards Central-Office Switching Network Routers and Switches Server Line Cards

Diagram

Block Diagram

Design Guides

Power Management for Battery-Powered Equipment (PDF)

Reliability Reports

Reliability Report: MAX5948B.pdf Show FIT data for: MAX5948 Request Reliability Report for: MAX5948A MAX5948

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX5948A	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5948AESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5948AESA-T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5948AESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5948AESA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5948B	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5948BESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5948BESA-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5948BESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5948BESA+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

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