CS3720 datasheet(2/4 Pages) CHERRY

2 / 4 page

Current flow through the two outputs COIL+ and COIL-

is controlled by the combined settings of ENABLE1,

ENABLE2 and DIRECTION (Table 1). The outputs will be

active only when ENABLE1 is low and ENABLE2 is high.

When DIRECTION is high, current flows out of COIL+

and into COIL-. When DIRECTION is low, current flows

out of COIL- and into COIL+. For any other combination

of ENABLE settings, the outputs are off.

Table 1. Logical Control Diagram

ENABLE1 ENABLE2

DIRECTION

COIL+

COIL-

Low

High

Low

High

Low

High

OFF

Low

OFF

Motor Direction Control

Electrical Characteristics: 5.5V ² VCC ² 17V; Ð40¡C ² TJ ² +150¡C; Ð40¡C ² TC ² +105¡C; Ð40¡C ² TA ² 105¡C; unless otherwise specified.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Package Lead Description

PACKAGE LEAD#

LEAD SYMBOL

FUNCTION

Application Hints

15 Lead

7 Lead

Power SIP

TO-220

D2PAK

ENABLE1

Enables output when held low and ENABLE 2 = High

DIRECTION

Determines the direction of current flow through COIL+ and

COIL- as long as ENABLE1 = Low and ENABLE2 = High

COIL+

Positive Output of H bridge to coil

Gnd

Ground connection

VSS

Supply voltage for IC

COIL-

Negative Output of H bridge to coil

ENABLE2

Enables output when held high and ENABLE 1 = Low

Output Stage

Quiescent Current

IOUT=0mA;

ENABLE1=DIRECTION= High

ENABLE2=Low

Output Saturation Voltage

IOUT=2A

3.2

IOUT=500mA

2.6

Output Leakage Current

IOUT=0mA

µA

Current Limit

3.0

Logic Control Functions

High Level Input Voltage

2.0

Low Level Input Voltage

0.8

High Level Input Current

µA

Low Level Input Current

-250

µA

Turn on Delay

RLOAD=30½; Coil=5mH;

µs

Guaranteed by design

CLOAD=15pF

Turn off Delay

RLOAD=30½; Coil=5mH;

µs

Guaranteed by design

CLOAD=15pF

Fault Protection Functions

Overvoltage Shutdown

IOUT = 500mA

18.0

21.5

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