STK672-340-E Просмотр технического описания (PDF) - SANYO -> Panasonic

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STK672-340-E

Two-Phase Stepping Motor Driver (Square Wave Drive) Output Current 2.2A

SANYO -> Panasonic 

STK672-340-E

Features

• The motor speed can be controlled by the frequency of an external clock signal (the CLOCK pin signal).

• The excitation type is switched according to the state (low or high) of the MODE pin. The mode is set to 2-phase or

1-2 phase excitation on the rising edge of the clock signal.

• A motor direction switching pin (the CWB pin) is provided.

• Supports Schmitt input for 2.5V High level input.

• The motor current can be set by changing the Vref pin voltage. Since a 0.14Ω current detection resistor is built in, a

current of 1A is set for each 0.14V of applied voltage.

• The input frequency range for the clock signal used for motor speed control is 0 to 50kHz.

• Supply voltage ranges: VCC = 10 to 42V, VDD = 5.0V ±5%

• This IC supports motor operating currents of up to 2.2A at Tc = 105°C, and of up to 3.6A at Tc = 25°C.

• Provides a function that, during clock input, forces all MOSFET devices to the off state when the ENABLE pin is set

low, and then, when ENABLE is set high, resumes operation continuing with the prior excitation timing.

Specifications

Absolute Maximum Ratings at Tc = 25°C

Parameter

Maximum supply voltage 1

Maximum supply voltage 2

Input voltage

Output current

Allowable power dissipation

Operating substrate temperature

Junction temperature

Storage temperature

Symbol

VCC max

VDD max

VIN max

IOH max

Pd max

Tc max

Tj max

Tstg

Conditions

No signal

No signal

Logic input pins

VDD = 5V, CLOCK ≥ 200Hz

With an arbitrarily large heat sink. Per MOSFET

Ratings

Unit

52

V

-0.3 to +7.0

V

-0.3 to +7.0

V

3.6

A

8

W

105

°C

150

°C

-40 to +125

°C

Allowable Operating Ranges at Ta = 25°C

Parameter

Operating supply voltage 1

Operating supply voltage 2

Input voltage

Output current 1

Output current 2

Symbol

VCC

VDD

VIH

IOH1

IOH2

CLOCK frequency

Phase driver withstand voltage

Recommended operating substrate

temperature

fCL

VDSS

Tc

Conditions

With signals applied

With signals applied

Tc=105°C, CLOCK≥200Hz

Tc=80°C, CLOCK≥200Hz,

See the motor current (IOH) derating curve

Minimum pulse width: at least 10μs

ID=1mA (Tc=25°C)

No condensation

Ratings

unit

10 to 42

V

5.0±5%

V

0 to VDD

V

2.2

A

2.7

A

0 to 50

kHz

100min

V

0 to 105

°C

Electrical Characteristics at Tc = 25°C, VCC = 24V, VDD = 5V

Parameter

Symbol

Conditions

VDD supply current

Output average current

FET diode forward voltage

Output saturation voltage

Input high voltage

Input low voltage

Input current

ICCO

Ioave

Vdf

Vsat

VIH

VIL

IIL

CLOCK=GND

With R/L=3Ω/3.8mH in each phase

Vref = 0.137V

If=1A (RL=23Ω)

RL=23Ω

Pins 8 to 12 (5 pins)

Pins 8 to 12 (5 pins)

With pins 8 to 12 at the ground level.

Vref input voltage

VrH

Pin 7

Vref input bias current

PWM frequency

IIB

With pin 7 at 1V

fc

Note: A fixed-voltage power supply must be used.

Rating

unit

min

typ

max

3.1

7

mA

0.52

0.58

0.64

A

1.1

1.7

V

0.31

0.44

V

2.5

V

0.6

V

10

μA

0

3.5

V

50

500

nA

35

45

55 kHz

No.A1254-2/13

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