A3966SLBTR-T Allegro, A3966SLBTR-T Datasheet

A3966SLBTR-T

Manufacturer Part Number

A3966SLBTR-T

Description

Manufacturer

Allegro

Datasheets

1.A3966SLBTR-T.pdf (8 pages)

2.A3966SLBTR-T.pdf (9 pages)

3.A3966SLBTR-T.pdf (9 pages)

4.A3966SLBTR-T.pdf (9 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

A3966SLBTR-T

Manufacturer:

ANAX

Quantity:

1 900

Company:

Meier Automation Equipment Co., Limited

Part Number:

A3966SLBTR-T

Manufacturer:

ALLEGRO/雅丽高

Quantity:

20 000

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REFERENCE

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage, V

Output Current, I

Logic Supply Voltage, V

Input Voltage, V

Sense Voltage, V

Package Power Dissipation (T

Operating Temperature Range,

Junction Temperature,

Storage Temperature Range,

Output current rating may be limited by duty cycle,

ambient temperature, and heat sinking. Under any set

of conditions, do not exceed the specified current rating

or a junction temperature of 150°C.

* Per SEMI G42-88 Specification, Thermal Test Board

Standardization for Measuring Junction-to-Ambient

Thermal Resistance of Semiconductor Packages.

ENABLE

GROUND

SUPPLY

PHASE

SENSE

(continuous) .............................. ±650 mA

A3966SA ..................................... 2.08 W*

A3966SLB ................................... 1.87 W*

OUT

LOAD

..................................... -20°C to +85°C

.................................................. +150°C

................................... -55°C to +150°C

A3966SLB (SOIC)

REF

LOGIC

OUT

........ -0.3 V to V

................................ 1.0 V

(peak) ........... ±750 mA

LOGIC

...................... 30 V

.................... 7.0 V

= 25°C), P

Dwg. PP-066-1

OUT

PHASE

ENABLE

GROUND

SENSE

LOGIC

SUPPLY

OUT

+ 0.3 V

footnote are in production but have been determined to be LAST TIME BUY. This

classification indicates that sale of this device is currently restricted to existing customer

applications. The variants should not be purchased for new design applications because

obsolescence in the near future is probable. Samples are no longer available. Status

change: October 31, 2006. Deadline for receipt fo LAST TIME BUY orders: April 27, 2007.

These variants include: A3966SA, A3966SLB, and A3966SLBTR.

Pb-based variants are being phased out of the product line. The variants cited in this

3966

phase bipolar stepper motor. Each device includes two H-bridges capable of

continuous output currents of ±650 mA and operating voltages to 30 V. Motor

winding current can be controlled by the internal fixed-frequency, pulse-width

modulated (PWM), current-control circuitry. The peak load current limit is set

by the user’s selection of a reference voltage and current-sensing resistors.

Except for package style and pinout, the two devices are identical.

network. The capacitor in the RC timing network also determines a user-

selectable blanking window that prevents false triggering of the PWM current-

control circuitry during switching transitions.

optimized for low saturation voltages. The sink drivers feature the Allegro

patented Satlington

voltage drop of a saturated transistor and the high peak current capability of a

Darlington.

appropriate source and sink driver pair. For each bridge, an ENABLE input, when

held high, disables the output drivers. Special power-up sequencing is not

required. Internal circuit protection includes thermal shutdown with hysteresis,

ground-clamp and flyback diodes, and crossover-current protection.

A3966SLB is supplied in a 16-lead plastic SOIC with copper heat sink tabs. The

power tab is at ground potential and needs no electrical isolation. The A3966SLB

is also available in a lead (Pb) free version, with 100% matte tin leadframe plating.

FEATURES

The A3966SA and A3966SLB are designed to drive both windings of a two-

The fixed-frequency pulse duration is set by a user-selected external RC timing

To reduce on-chip power dissipation, the H-bridge power outputs have been

For each bridge, a PHASE input controls load-current polarity by selecting the

The A3966SA is supplied in a 16-pin dual in-line plastic package. The

A 3 9 6 6 S L B T R -T

±650 mA Continuous Output Current

30 V Output Voltage Rating

Internal Fixed-Frequency PWM Current Control

Satlington Sink Drivers

User-Selectable Blanking Window

Internal Ground-Clamp & Flyback Diodes

Internal Thermal-Shutdown Circuitry

Crossover-Current Protection and UVLO Protection

A 3 9 6 6 S L B -T

P a rt N um b e r

DUAL FULL-BRIDGE PWM

output structure. The Satlington outputs combine the low

P b -fre e *

Ye s

1 6 -L e a d S O IC

P a c k a g e

MOTOR DRIVER

1 0 0 0 p e r re e l

4 7 p e r tub e

P a c k ing

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