TA8428FG(O,EL) Datasheet TA8428FG(O,EL), TA8428K(O,S) | P1-P3

TA8428K/FG

2010-02-23

TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC

TA8428K, TA8428FG

DC MOTOR FULL-BRIDGE (H-BRIDGE) DRIVER ICs

(Forward/reverse switching driver ICs)

The TA8428K, TA8428FG is Full Bridge Driver IC for Brush

Motor Rotation Control.

Forward Rotation, Reverse Rotation, Stop and Braking

operations are available.

FEATURES

z Output Current : TA8428K 1.5 A (AVE.), 3.0 A (PEAK)

TA8428FG 0.8 A (AVE.), 2.4 A (PEAK)

z 4 modes (forward/reverse/short brake and stop) are available

with 2 TTL compatible inputs control. Free-wheeling diodes

for back-EMF protection are equipped.

z Thermal shutdown and overcurrent protection circuits

z Operating voltage range: V

= 7.0 V to 27.0 V

The TA8428FG is RoHS compatible.

The TA8428K is a Sn-plated product. (The Pb-containing materials

with a high melting point that are exempted from RoHS directives are used inside the IC.)

Weight

HSIP7−P−2.54 : 1.88 g (Typ.)

HSOP20−P−450−1.00 : 0.79 g (Typ.)

About solderability, following conditions were confirmed

• Solderability

(1) Use of Sn-37Pb solder Bath

· solder bath temperature: 230°C

· dipping time: 5 seconds

· the number of times: once

· use of R-type flux

(2) Use of Sn-3.0Ag-0.5Cu solder Bath

· solder bath temperature: 245°C

· dipping time: 5 seconds

· the number of times: once

· use of R-type flux

TA8428FG

TA8428K

Terminals of TA8428 written below are sensitive to electrostatic discharge. When handling this product, ensure that the

environment is protected against electrostatic discharge by using an earth strap, a conductive mat and an ionizer. Ensure

also that the ambient temperature and relative humidity are maintained at reasonable levels.

Terminals which are sensitive to electrostatic discharge: No. 1 and 2 (TA8428K）, No. 8 and 9 (TA8428FG)

The IC should be installed correctly. Otherwise, the IC or peripheral parts and devices may be degraded or permanently

dama

ed.

TA8428K/FG

2010-02-23

BLOCK DIAGRAM

PIN FUNCTION

PIN No.

K FG

SYMBOL FUNCTIONAL DESCRIPTION

1 8 IN1 TTL compatible control inputs.

2 9 IN2

(PNP type low active comparator inputs)

3 15 OUTA

Connection pin for a DC motor, which can sink and

source currents of up to 1.5 A (TA8428K) or 0.8 A

(TA8428FG). Two free-wheeling diodes are internally

connected to this pin; one is between this pin and GND

and the other is between this pin and V

4 Fin GND GND terminal

5 16 OUT A

Connection pin for a DC motor. This pin has the same

function as the OUT A pin.

6 Other pin N.C Non connection

7 1, 3 V

Supply voltage terminal for control and motor drive.

MULTI-PROTECTION CIRCUITS

TA8428K, TA8428FG has 2 build−in protective functions which work independently.

These circuit operations are as follows.

Note 1: These protection features are provided to temporarily avoid abnormal conditions such as output short circuits

and are not guaranteed to prevent the IC from being damaged.

Note 2: These features do not operate outside the guaranteed operating ranges and the IC may be permanently

damaged in case of output short circuits.

TA8428K

TA8428FG

TA8428K/FG

2010-02-23

THERMAL SHUTDOWN (TSD)

• Basic Operation

When the junction temperature (chip temperature) is equal to or lower than the TSD threshold, output signals

are controlled by input signals. However, when the junction temperature exceeds the threshold, output pins

are put into a high-impedance state regardless of input signals.

• Functional Description

Temperature sensing is performed by monitoring the V

voltage at an on-chip diode. When V

is low

compared to the internal reference voltage, the TSD circuit sends a signal to the control logic to turn off the

output transistors. Otherwise, the control logic is controlled by the IN1 and IN2 inputs.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15

TA8428FG(O,EL)

Mfr. #:

Buy TA8428FG(O,EL)

Manufacturer:

Description:

Motor / Motion / Ignition Controllers & Drivers DC Motor H-Bridge IC 0.8A Avg 2.4APeak

Lifecycle:

New from this manufacturer.

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TA8428FG(O,EL)

TA8428FG(O,EL)

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