lm5064pmhx National Semiconductor Corporation, lm5064pmhx Datasheet

lm5064pmhx

Manufacturer Part Number

lm5064pmhx

Description

Negative High Voltage System Power Management And Protection Ic With Pmbus

Manufacturer

National Semiconductor Corporation

Datasheet

1.LM5064PMHX.pdf (4 pages)

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Negative High Voltage System Power Management and

Protection IC with PMBus

General Description

The LM5064 combines a high performance hot swap con-

troller with a PMBus compliant SMBus/I

rately measure, protect and control the electrical operating

conditions of systems connected to a backplane power bus.

The LM5064 continuously supplies real-time power, voltage,

current, temperature and fault data to the system manage-

ment host via the SMBus interface.

The LM5064 control block includes a unique hot swap archi-

tecture that provides current and power limiting to protect

sensitive circuitry during insertion of boards into a live system

backplane, or any other "hot" power source. A fast acting cir-

cuit breaker prevents damage in the event of a short circuit

on the output. The input under-voltage and over-voltage lev-

els and hysteresis are configurable, as well as the insertion

delay time and fault detection time. A temperature monitoring

block on the LM5064 interfaces with a low-cost external diode

for monitoring the temperature of the external MOSFET or

other thermally sensitive components. The PGD output pro-

vides a fast indicator when the input and/or output voltages

are outside their programmed ranges.

The LM5064 monitoring block computes both the real-time

and average values of subsystem operating parameters

averaging is accomplished by averaging the product of the

input voltage and current. A black box (Telemetry/Fault Snap-

shot) function captures and stores telemetry data and device

status in the event of a warning or a fault.

Simplified Application Circuit

, I

, P

, V

OUT

) as well as the peak power. Accurate power

C interface to accu-

301584

LM5064

Features

■

Applications

■

Input voltage range: -10V to -80V

Programmable 26 mV or 50 mV Current Limit Threshold

with Power Limiting (MOSFET Power Dissipation Limiting)

Real time monitoring of V

resolution and 1 kHz sampling rate

Configurable Circuit Breaker protection for hard shorts

Configurable Under-Voltage and Over-Voltage protection

Remote temperature sensing with programmable warning

and shutdown thresholds

Detection and notification of damaged MOSFET condition

True Input Power averages dynamic power readings

Averaging of V

interval ranging from 0.001 to 4 seconds

Programmable WARN and FAULT thresholds with

SMBA notification

Black box capture of telemetry measurements and device

status triggered by WARN or FAULT condition

structure

Full featured application development software

eTSSOP-28 package

Base Station Power Distribution Systems

Intelligent Solid State Circuit Breaker

-24V/-48V Industrial Systems

C/SMBus interface and PMBus compliant command

, I

, P

, and V

, V

OUT

, I

PRELIMINARY

over programmable

, P

, V

301584001

June 21, 2011

AUX

www.national.com

with 12-bit

Related parts for lm5064pmhx

lm5064pmhx Summary of contents

Page 1

... A black box (Telemetry/Fault Snap- shot) function captures and stores telemetry data and device status in the event of a warning or a fault. Simplified Application Circuit © 2011 National Semiconductor Corporation LM5064 Features ■ Input voltage range: -10V to -80V ■ ...

Page 2

... Connection Diagram Ordering Information Order Number LM5064PMH LM5064PMHE LM5064PMHX www.national.com Top View 28-Lead eTSSOP Package Number MXA28A Package Type NSC Package Drawing eTSSOP-28 MXA28A 2 301584002 Supplied As 48 units in rail 250 units in tape & reel 2500 units in tape & reel ...

Page 3

Physical Dimensions inches (millimeters) unless otherwise noted 28-Lead eTSSOP Package NS Package Number MXA28A 3 www.national.com ...

Page 4

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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