Dual Channel Switch Interface IC

A6850

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Terminal List Table

Name

Number

Description

ENABLE1

1

Digital input pulled to ground

SENSE1

2

Sensed current output

ENABLE2

3

Digital input pulled to ground

SENSE2

4

Sensed current output

VIN

5

Chip power supply voltage

OUTPUT2

6

Switchable voltage supply to sensor IC

GROUND

7

Ground reference

OUTPUT1

8

Switchable voltage supply to sensor IC

2

3

4

1

7

6

5

8

ENABLE1

SENSE1

ENABLE2

SENSE2

OUTPUT1

GROUND

OUTPUT2

VIN

Switch

Switch

Control

The A6850 eliminates the need for the external series shunt resistor

in Hall device applications by incorporating an integrated current

the SENSE1 or SENSE2 output pin. A low current Sleep mode is

available (<15 μA) by driving both ENABLE pins low. Also, the

A6850 can be used to interface to mechanical switches.

The A6850 is supplied in an 8-pin Pb (lead) free SOIC package,

with 100% matte tin leadframe plating.

Description (continued)

Pin-out Diagram

Selection Guide

Part Number

Packing

A6850KLTR-T

13-in. reel, 3000 pieces/reel

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

40

V

Output Voltage

–0.3 to 40

V

SENSEx Voltage Range

–0.3 to 7

V

ENABLEx Voltage Range

–0.3 to 7

V

Operating Ambient Temperature

–40 to 150

ºC

Maximum Junction Temperature

150

ºC

Storage Temperature

–55 to 150

ºC

ESD Rating - Human Body Model

HBM

AEC-Q100-002; OUTPUT1 and OUTPUT2

4.5

kV

AEC-Q100-002; all other pins

2.5

kV

ESD Rating - Charged Device Model

CDM

AEC-Q100-011; all pins

1050

V

THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information

Characteristic

Symbol

Test Conditions*

Value

Units

Package Thermal Resistance

4-layer PCB based on JEDEC standard

80

ºC/W

1-layer PCB with copper limited to solder pads

140

ºC/W

*Additional thermal data available on the Allegro Web site.