A8925CEB Allegro Microsystems Inc, A8925CEB Datasheet

A8925CEB

Manufacturer Part Number

A8925CEB

Description

Manufacturer

Allegro Microsystems Inc

Datasheet

1.A8925CEB.pdf (8 pages)

Specifications of A8925CEB

Lead Free Status / Rohs Status

Not Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

A8925CEB

Manufacturer:

ALLEGRO

Quantity:

5 510

Current page: 1 of 8
Download datasheet (87Kb)

8925

3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER

WITH LINEAR CURRENT CONTROL

AND POWER DMOS OUTPUTS

GROUND

POWER

Load Supply Voltage, V

Output Current, I

Logic Supply Voltage, V

Logic Input Voltage Range,

Package Power Dissipation,

Operating Temperature Range,

Junction Temperature, T

Storage Temperature Range,

† Fault conditions that produce excessive

junction temperature will activate device thermal

shutdown circuitry. These conditions can be

tolerated, but should be avoided.

Output current rating may be restricted to a value

determined by system concerns and factors.

These include: system duty cycle and timing,

ambient temperature, and use of any heatsinking

and/or forced cooling. For reliable operation, the

specified maximum junction temperature should

not be exceeded.

3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER

SUB

......................................... See Graph

..................................... 0 C to +70 C

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

................................ -0.3 V to +6.0 V

OUT

.......................... 4.0 A

............... +150 C†

..................... 14 V

SUB

Dwg. PP-034

GROUND

POWER

WITH LINEAR CURRENT CONTROL

8925

troller/driver designed for use in Winchester disk drives and other data

storage applications. The power output stages are capable of 4 A

output currents and have DMOS power outputs with less than 0.25

diodes protect the output drivers when switching inductive loads.

Thermal shutdown circuitry is provided to protect the device from ex-

cessive junction temperature.

current and control motor speed. Internal current-sensing circuitry

eliminates the need for external sense resistors. Analog and digital

control circuitry provide complete sequencing of the output drivers as

well as providing brake, disable, and tachometer functions. A FAULT

output flag indicates the presence of an under-voltage condition on the

12 V supply, excessive junction temperature, or an invalid Hall input

combination. The A8925CEB’s commutation logic is compatible with

motors that have digital Hall-effect sensors with 120 of electrical

separation. Internal charge pump circuitry is provided to drive the N-

channel DMOS source drivers to their required gate voltages.

surface-mount applications. The copper batwing provides for maxi-

mum allowable package power dissipation in the smallest possible

construction.

Always order by complete part number: A8925CEB .

DS(on)

DMOS Outputs

Low r

Linear Current Control

Internal Commutation Circuitry

Internal Current Sensing

Thermal Shutdown Circuitry

Under Voltage Detection Circuitry

Fault Output Flag

Power Surface-Mount Package

The A8925CEB is a DMOS three-phase brushless dc motor con-

A transconductance amplifier is used to linearly regulate the load

The A8925CEB is provided in a 44-lead PLCC power package for

for low power dissipation. Intrinsic ground clamp and flyback

DS(on)

AND POWER DMOS OUTPUTS

- 0.25

Maximum

Related parts for A8925CEB

A8925CEB Summary of contents

Page 1

... Internal charge pump circuitry is provided to drive the N- channel DMOS source drivers to their required gate voltages. The A8925CEB is provided in a 44-lead PLCC power package for surface-mount applications. The copper batwing provides for maxi- mum allowable package power dissipation in the smallest possible construction ...

Page 2

BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OUTPUTS Characteristic Logic Supply Voltage Load Supply Voltage Supply Current Thermal Shutdown Output ON Resistance Output Sustaining Voltage Clamp Diode Forward Voltage Output Leakage Current Logic Input ...

Page 3

BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OUTPUTS Characteristic Logic Output Voltage (FAULT, TACH) Input Bias Current Input Offset Voltage Input Common-Mode Voltage Range Error Voltage Gain Unity Gain Bandwidth Common-Mode Rejection Ratio Power ...

Page 4

... Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Power Outputs (OUT , OUT A B OUT ). The power outputs of the A8925CEB C are DMOS transistors with a maximum r of 0.25 . Intrinsic ground clamp and flyback diodes clamp transient voltage spikes when switching inductive loads. Internal charge ...

Page 5

... LOGIC SUPPLY (V A8925CEB and powers all circuitry except the power outputs and brake control circuitry. LOGIC GROUND. This must be connected to the power ground terminals in systems that do not use separate power and logic grounds ...

Page 6

BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OUTPUTS 0.319 0.291 0.021 0.013 0.319 0.291 0.050 BSC 8.10 7.39 0.533 0.331 8.10 7.39 1.27 BSC NOTES: 1. Webbed lead frame. Leads 7 through 17 and ...

Page 7

BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OUTPUTS Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifica- tions as may be required to permit improvements ...

Page 8

BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OUTPUTS 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ...

Related keywords

A8925CEB datasheet
A8925CEB data sheet
A8925CEB pdf datasheet
A8925CEB component
A8925CEB part
A8925CEB distributor
A8925CEB RoHS
A8925CEB datasheet download