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TA7733F_06

更新时间：2025-07-04 06:15:44

品牌：TOSHIBA

描述：Functional Bridge Driver

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TA7733F_06 概述

Functional Bridge Driver 功能驱动桥

TA7733F_06 数据手册

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TA7733F/FG

TOSHIBA Bipolar Linear Integrated Circuit

Silicon Monolithic

TA7733F/FG

Functional Bridge Driver

The TA7733 is a low-voltage bridge driver IC offering four modes:

forward rotation, reverse rotation, stop, and brake.

Features

z Wide operating supply voltage range:

= 1.8~15 V

CC (opr.)

z Housed in a flat package (16-pin)

z Forward and reverse rotation, stop and brake modes are

available by means of rotation control signals.

z High efficiency is obtained

z Can be used as an interface driver.

Weight: 0.14 g (typ.)

Block Diagram

The TA7733FG is a Pb-free product.

The following conditions apply to solderability:

*Solderability

1. Use of Sn-37Pb solder bath

*solder bath temperature = 230°C

*dipping time = 5 seconds

*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

*number of times = once

*use of R-type flux

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TA7733F/FG

Pin Description

Pin No.

Symbol

Functional Description

Power supply voltage terminal

No connection

Signal input terminal

No connection

Truth table 1

GND 2

OUT a

OUT A

GND 1

OUT B

OUT b

Logic GND

Output A upper transistor drive terminal

Output A

Power GND terminal

Output B

Output B upper transistor drive terminal

Functions

(1) Bridge driver (truth table 1)

INPUT MODE

OUTPUT

OPERATING

CONTROL

NOTE

MODE

OUT A

OUT B

OUT a

OUT b

(−500 mA)

(−25 mA)

Forward

rotation

―

(−500 mA)

(−25 mA)

Reverse

rotation

―

2-input

control

(−500 mA)

―

Brake

Stop

―

(−500 mA)

(−25 mA)

A ON

1-input

control

(−500 mA)

(−25 mA)

―

B ON

(−500 mA)

HIGH

≥ 1.2 V

H / L

―

AB ON

LOW

≤ 0.6 V

―

INHIBIT

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TA7733F/FG

(2) Interface driver application

If IN and IN connect to “HIGH”, Out A and Out B can be used as interface driver outputs for each input.

(Connect Out a and Out b to GND.)

20 x 20 x 0.8 mm PCB mounting (at least

60% of which is occupied by copper)

Input-Output Circuit

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TA7733F/FG

Absolute Maximum Ratings (Ta = 25°C)

Characteristic

Peak supply voltage

Symbol

Rating

Unit

Output current

0.5

O (AVE.)

350 (Note 1)

550 (Note 2)

−30~75

Power dissipation

Operating temperature

Storage temperature

opr

°C

−55~150

stg

Note 1: No heat sink

Note 2: This rating is obtained when the product is mounted on a 50 × 50 × 1.6 mm PCB of which 60% or more is

occupied by copper.

Electrical Characteristics (unless otherwise specified, Ta = 25°C, V = 5 V)

Test

Circuit

Characteristic

Symbol

Test Condition

Min

Typ.

Max

Unit

Output open, CW / CCW mode

Output open, stop mode

Output open, brake mode

Inhibit (INPUT4 = “L”)

―

7.2

―

CC1

CC2

CC3

CC4

Supply current

19.2

2.4

= 500 mA, lower side (Output A,

―

0.4

―

sat1

sat2

OUTPUT saturation voltage

Output TR leakage current

= 25 mA, upper side (Output a, b)

―

0.5

―

= 15 V

µA

“H” level

Input voltage

―

1.2

―

IN 1, 2 (H)

“L” level

―

0.3

IN 1, 2 (L)

Input current

Input voltage

Input current

“L” level

“H” level

“L” level

“H” level

Input “L” (source current)

―

µA

IN1, 2

―

1.0

―

IN 3, 4 (H)

0.3

IN 3, 4 (L)

Input “H” (sink current) V = 1 V

―

µA

IN3, 4

Diode forward voltage

I = 0.5 A, V = 0 V

―

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TA7733F/FG

Tests Circuits

1. I_{CC1, 2, 3, 4}

2. V_{sat1, 2}

3. IL

IIN

5. VF

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TA7733F/FG

Notes on Using the TA7733F/FG

The TA7733F/FG functionable bridge driver is an IC specifically developed to control rotation switching in brush motors.

This IC has been carefully designed and strengthened to withstand counter-electromotive force or startup rush current,

which are problems often associated with driving brush motors.

However, as with other power ICs, application circuits must be designed not to apply surge voltage or excess current that

exceeds the standard values. In addition, when designing PCBs, make sure the wiring pattern does not cause oscillation,

which can result in equipment malfunction or destruction of the IC.

The following are notes on use of the TA7733F/FG. These should be reflected at the design stage.

(1) Power supply voltage

To avoid the motor current affecting the TA7733F/FG control-side power supply, we recommend you use two power

supplies: an external transistor power supply, and a TA7733F/FG control-side power supply. However, when using

a single power supply, connect as in the diagram below.

(2) Maximum voltage and current

The maximum supply voltage (pin 1) for the TA7733F/FG is 18 V. The operating supply voltage is in the range of

1.8~15 V. No voltage exceeding this range should be applied to pin 1.

The maximum current is 0.5 A (ave.) or 1.5 A (peak). The circuit should be designed so that rush current at startup

does not exceed peak current, and average current during steady operation does not exceed 0.5 A.

(3) External diodes

As the block diagram shows, the TA7733F/FG has internal diodes.

The lower two diodes, which are the IC’s internal parasitic diodes, have a relatively large capacitance. However,

when a motor with a large reactance such as a core motor is driven, the upper two diodes may be damaged by the

motor’s counter-electromotive force. In such a case, connect external diodes in parallel. The lower diodes should

not be subjected to high current. For brake operation, therefore, external diodes should be connected.

(4) PCB design

The following points concern the TA7733F/FG pattern design around the power supply line (pin 1) and the pattern

design of the GND (pin 8, pin 12 / 13).

a) Ensure that the bypass capacitor between pin 1, and GND does not share impedance with other lines.

b) The GND line should not be shared by other circuits.

c) The capacitance of the bypass capacitor should be as large as possible.

(5) Oscillation remedies

To prevent noise from sparks when using brush motors, a capacitor may be connected between both pins.

When using the TA7733F/FG, the capacitor is connected between outputs (pins 10 / 11, and pins 14 / 15). This may

cause oscillation. Therefore avoid connecting the capacitor where possible. If connection is necessary to overcome

noise, connect resistors in series as shown in the technical data.

The values for the capacitor and resistors must be determined according to the motor.

Note: Utmost care is necessary in the design of the output, V , V , and GND lines since the IC may be destroyed by

short-circuiting between outputs, air contamination faults, or faults due to improper grounding, or by

short-circuiting between contiguous pins.

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TA7733F/FG

Package Dimensions

SSOP16−P−225−1.00A

Unit: mm

Weight: 0.14 g (typ.)

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TA7733F/FG

Notes on Contents

1. Block Diagrams

Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified

for explanatory purposes.

2. Equivalent Circuits

The equivalent circuit diagrams may be simplified or some parts of them may be omitted for

explanatory purposes.

3. Timing Charts

Timing charts may be simplified for explanatory purposes.

4. Application Circuits

The application circuits shown in this document are provided for reference purposes only. Thorough

evaluation is required, especially at the mass production design stage.

Toshiba does not grant any license to any industrial property rights by providing these examples of

application circuits.

5. Test Circuits

Components in the test circuits are used only to obtain and confirm the device characteristics. These

components and circuits are not guaranteed to prevent malfunction or failure from occurring in the

application equipment.

IC Usage Considerations

Notes on handling of ICs

[1] The absolute maximum ratings of a semiconductor device are a set of ratings that must not be

exceeded, even for a moment. Do not exceed any of these ratings.

Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result

injury by explosion or combustion.

[2] Use an appropriate power supply fuse to ensure that a large current does not continuously flow in

case of over current and/or IC failure. The IC will fully break down when used under conditions that

exceed its absolute maximum ratings, when the wiring is routed improperly or when an abnormal

pulse noise occurs from the wiring or load, causing a large current to continuously flow and the

breakdown can lead smoke or ignition. To minimize the effects of the flow of a large current in case

of breakdown, appropriate settings, such as fuse capacity, fusing time and insertion circuit location,

are required.

[3] If your design includes an inductive load such as a motor coil, incorporate a protection circuit into

the design to prevent device malfunction or breakdown caused by the current resulting from the

inrush current at power ON or the negative current resulting from the back electromotive force at

power OFF. IC breakdown may cause injury, smoke or ignition.

Use a stable power supply with ICs with built-in protection functions. If the power supply is

unstable, the protection function may not operate, causing IC breakdown. IC breakdown may cause

injury, smoke or ignition.

[4] Do not insert devices in the wrong orientation or incorrectly.

Make sure that the positive and negative terminals of power supplies are connected properly.

Otherwise, the current or power consumption may exceed the absolute maximum rating, and

exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result

injury by explosion or combustion.

In addition, do not use any device that is applied the current with inserting in the wrong orientation

or incorrectly even just one time.

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TA7733F/FG

Points to remember on handling of ICs

(1) Heat Radiation Design

In using an IC with large current flow such as power amp, regulator or driver, please design the

device so that heat is appropriately radiated, not to exceed the specified junction temperature (T_J)

at any time and condition. These ICs generate heat even during normal use. An inadequate IC heat

radiation design can lead to decrease in IC life, deterioration of IC characteristics or IC breakdown.

In addition, please design the device taking into considerate the effect of IC heat radiation with

peripheral components.

(2) Back-EMF

When a motor rotates in the reverse direction, stops or slows down abruptly, a current flow back to the motor’s

power supply due to the effect of back-EMF. If the current sink capability of the power supply is small, the

device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid

this problem, take the effect of back-EMF into consideration in system design.

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TA7733F/FG

2006-3-2

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