MC33091AD Motorola, MC33091AD Datasheet

MC33091AD

Manufacturer Part Number

MC33091AD

Description

SOP8

Manufacturer

Motorola

Datasheet

1.MC33091AD.pdf (16 pages)

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High-Side TMOS Driver

automotive switching applications requiring the capability of handling high

voltages attributed to load and field dump transients, as well as reverse and

double battery conditions. Few external components are required to drive a

wide variety of N–Channel TMOS devices. The MC33091A, driving an

appropriate TMOS device, offers economical system solutions for high–side

switching large currents. The MC33091A has CMOS compatible input

control, charge pump to drive the TMOS power transistor, basic fault

detection circuit, V DS monitoring circuit used to detect a shorted TMOS load,

and overcurrent protection timer with associated current squaring circuitry.

to current converter drive an externally programmable integrator circuit. This

circuit affords fast detection of a shorted load while allowing difficult loads,

such as lamps having high in–rush currents, additional time to turn on.

requiring a single pull–up resistor for operation. A fault is reported whenever

the MOSFET on–current exceeds an externally programmed set level.

the plastic 8–Pin surface mount package.

MOTOROLA ANALOG IC DEVICE DATA

The MC33091A is a High–Side TMOS Driver designed for use in harsh

Short circuit protection is made possible by having a unique V DS voltage

The Fault output is comprised of an open collector NPN transistor

The MC33091A is available in the plastic 8–Pin DIP package as well as

Designed for Automotive High–Side Driver Applications

Works with a Wide Variety of N–Channel Power MOSFETs

Drives Inductive Loads with No External Clamp Circuitry Required

CMOS Logic Compatible Input Control

On–Board Charge Pump with No External Components Required

Shorted Load Detection and Protection

Forward Overvoltage and Reverse Battery Protection

Load and Field Dump Protection

Extended Operating Temperature Range

Fault Output to Report a MOSFET Overcurrent Condition

Input

Fault

MC33091A

Gnd

This device contains 54 active transistors.

Q R

Simplified Block Diagram

R T

Squaring

Current

Circuit

R X

DRN

I SQ

V T

Overvoltage

Shutdown

C T

Charge

C S

Pump

R S

V CC

Gate

SRC

Load

+V S

Motorola, Inc. 1996

MC33091AD

MC33091AP

Device

SRC

DRN

Gate

ORDERING INFORMATION

Gnd

MC33091A

Order this document by MC33091A/D

PIN CONNECTIONS

TMOS DRIVER

SEMICONDUCTOR

TECHNICAL DATA

PLASTIC PACKAGE

Temperature Range

T A = – 40 to +125 C

HIGH–SIDE

CASE 626

D SUFFIX

CASE 751

P SUFFIX

Operating

(Top View)

(SO–8)

V T

Input

Fault

V CC

Plastic DIP

Package

SO–8

Rev 0

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