ca3272aq Intersil Corporation, ca3272aq Datasheet

ca3272aq

Manufacturer Part Number

ca3272aq

Description

Quad-gated Inverting Power Drivers With Fault Mode Diagnostic Flag Output

Manufacturer

Intersil Corporation

Datasheet

1.CA3272AQ.pdf (10 pages)

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Download datasheet (107Kb)

July 1997

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

http://www.intersil.com or 407-727-9207

Features

• Load Current Switching 600mA

• Suitable for Resistive or Inductive Loads

• Fault Mode Diagnostic Flag Output

• CA3292A Over-Voltage Zener Clamp

• Independent Over-Current Limiting

• Independent Over-Temperature Shutdown

• Temperature Shutdown Hysteresis

• 5V CMOS or TTL Input Logic

• High Dissipation Power-Frame Package

• Operating Temperature Range -40

Applications

• Solenoids

• Relays

• Lamps

• Steppers

• Injectors

• Motors

Ordering Information

Pinouts

CA3272AQ

CA3292AQ

CA3272AM

CA3292AM

PART NUMBER

INDEX

GND

CA3272A, CA3292A (PLCC)

RANGE (

12 13 14 15 16 17 18

-40 to 125

TEMP.

TOP VIEW

System Applications

• Automotive

• Appliance

• Industrial Control

• Robotics

28 Ld PLCC

28 Ld SOIC

PACKAGE

C to 125

Intersil Corporation 1999

CA3272A, CA3292A

GND

Quad-Gated Inverting Power Drivers with Fault

N28.45

M28.3

PKG.

NO.

Description

The CA3272A and CA3292A are Quad-Gated Inverting Power

Drivers for interfacing low-level logic to inductive and resistive

loads such as: relays, solenoids, AC and DC motors and resis-

tive loads such as incandescent lamps and other power drivers.

Each output is an open collector protected power transistor

driver. The CA3292A is similar to the CA3272A, except for an

added collector-to-base Zener diode that provides over-voltage

clamping protection on each power switching output. The

CA3292A block diagram is shown for one switching channel

with fault detection logic plus the output fault driver circuit for all

four switching channels. The FAULT output pin provides a ﬂag

output when a fault condition occurs. All four Output Power

Driver stages are shown in the Block Diagrams.

The ENABLE input is common to each of the four power

switches and when low, disables the FAULT output. From the

Input to Output, each switch is inverting. When IN is high, OUT

is low and the transistor switch is “ON” (conducting). The block

diagram shows the functional logic associated with fault detec-

tion. The Fault Sense circuit detects the IN and OUT states and

switches Q

transistor Q

pin. A resistive load from the FAULT pin to the power supply is

used to detect a fault as a low state. Both shorted and open

load conditions are detected.

Note: The CA3272A replaces the CA3272 for new designs.

Refer to the Fault Sink Current speciﬁcations when making

design changes. The CA3272A and CA3292A have increased

pull-down current drive from the FAULT output pin.

OUT B

OUT C

GND

“ON” if a fault is detected. When a fault is detected,

activates a current sink pull-down at the FAULT

Mode Diagnostic Flag Output

CA3272A, CA3292A (SOIC)

TOP VIEW

File Number

OUT A

FAULT

IN A

IN B

ENABLE

GND

IN C

IN D

OUT D

2223.7

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ca3272aq Summary of contents

Page 1

... Appliance • Lamps • Industrial Control • Steppers • Robotics • Injectors • Motors Ordering Information TEMP. o PART NUMBER RANGE ( C) CA3272AQ -40 to 125 28 Ld PLCC CA3292AQ -40 to 125 28 Ld PLCC CA3272AM -40 to 125 28 Ld SOIC CA3292AM -40 to 125 28 Ld SOIC Pinouts ...

Page 2

Block Diagram of the CA3272A ENABLE FAULT Block Diagram of the CA3292A ( Outputs Shown with Expanded Fault Logic) NOTE: The CA3292A is identical to the CA3272A except for the ...

Page 3

... For surface mount without added copper ground area: CA3272AQ, CA3292AQ (PLCC CLAMP CA3272AM, CA3292AM (SOIC For surface mount with 2 sq. in. of added copper ground area: CA3272AQ, CA3292AQ (PLCC CA3272AM, CA3292AM (SOIC See Maximum Power Dissipation vs Temperature Curves, Figures 6 and 7. Maximum Junction Temperature (Plastic Packages 150 Maximum Storage Temperature Range ...

Page 4

Electrical Speciﬁcations T = -40 A PARAMETER Output Driver Fault Sense, Low Threshold (Short) PROTECTION PARAMETERS Over-Current Limiting Over-Temperature Limiting (Junction Temperature) Over-Temperature Limiting, Hysteresis DESIGN PARAMETERS Input Capacitance Enable Capacitance NOTES: 1. Output Transient Currents are controlled by on-chip ...

Page 5

Applications The CA3272A and CA3292A are quad-gated inverting low- side power drivers with a fault diagnostic ﬂag output. Both o circuits are rated for 125 C ambient temperature applica- tions and have current limiting and thermal shutdown. While functionally similar ...

Page 6

The output will continue to turn on and off for as long as the shorted condition exists or until shutdown by the input logic. The resulting frequency and duty cycle of the output current ﬂow is determined by the ambient ...

Page 7

R (max (min (max LOAD SUPPLY THD R (max) = (6.5V - 5.5V) / 100 A = 10k LOAD Since the CA3272A do not have on-chip diodes to clamp voltage spikes which may be ...

Page 8

... PLCC 0 -50 C 100 C 150 C FIGURE 7. MAXIMUM POWER DISSIPATION RATING vs TEMPERATURE FOR THE CA3272AQ, CA3292AQ PLCC PACKAGE AND THE CA3272AM, CA3292AM SOIC PACKAGE WITH 2 SQ. IN OZ. COPPER PC BOARD AREA FOR HEAT SINKING MAX LIMIT V BATT R 100 SOIC/PLCC ...

Page 9

Small Outline Plastic Packages (SOIC INDEX xx 0.25(0.010) H AREA - SEATING PLANE - - 0.10(0.004) 0.25(0.010 ...

Page 10

... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certiﬁcation. Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or speciﬁcations at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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