Datasheet.kr   

A8904SLB-T 데이터시트 PDF




Allegro MicroSystems에서 제조한 전자 부품 A8904SLB-T은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 A8904SLB-T 자료 제공

부품번호 A8904SLB-T 기능
기능 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
제조업체 Allegro MicroSystems
로고 Allegro MicroSystems 로고


A8904SLB-T 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 18 페이지수

미리보기를 사용할 수 없습니다

A8904SLB-T 데이터시트, 핀배열, 회로
8904
3-PHASE BRUSHLESS DC MOTOR
CONTROLLER/DRIVER WITH BACK-EMF SENSING
A8904SLB (SOIC)
Absolute Maximum Ratings
The A8904SLB and A8904SLP are three-phase brushless dc motor
controller/drivers designed for applications where accurate control of high-
speed motors is required. The three half-bridge outputs are low on-resistance
n-channel DMOS devices capable of driving up to 1.2 A. The A8904 provides
complete, reliable, self-contained back-EMF sensing, motor startup and
running algorithms. A programmable digital frequency-locked loop speed
control circuit together with the linear current control circuitry provides
precise motor speed regulation.
A serial port allows the user to program various features and modes of
operation, such as the speed control parameters, startup current limit, sleep
mode, direction, and diagnostic modes.
The A8904 is fabricated in Allegro’s BCD (Bipolar CMOS DMOS)
process, an advanced mixed-signal technology that combines bipolar, analog
and digital CMOS, and DMOS power devices. The A8904SLB is provided in
a 24-lead wide-body SOIC batwing package. The A8904SLP is provided in a
thin (<1.2 mm), 28-lead SSOP package with an exposed thermal pad. Each
package type is available in a lead-free version (100% matte tin leadframe).
Load Supply Voltage, VBB . . . . . . . . . . . . 15 V
Output Current1, IOUT . . . . . . . . . . . . . . . . . . . . . ±1.4 A
Peak Output Current (Brake)2, IOUT(BRK) . ±3.0 A
Period2 for IOUT(BRK) to fall from
±3.0 A to ±1.4 A . . . . . . . . . . . . . . . 800 ms
Logic Supply Voltage, VDD . . . . . . . . . . . 7.0 V
Logic Input Voltage Range, VIN
(continuous) . . . . . . -0.3 V to VDD + 0.3 V
(tw <30 ns) . . . . . . . -1.0 V to VDD + 1.0 V
Package Power Dissipation, PD . . See Graph
Operating Temperature, TA . . . -20°C to +85°C
Junction Temperature3, TJ . . . . . . . . . +150°C
Storage Temperature,TS . . . . -55°C to +150°C
1Output 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.
2Peak output current is a transient condition that
occurs during braking when the motor acts as a
generator. The 3 A level is based on the maximum
peak of a sine wave that is damped. The maximum
period between the initial brake being applied and the
current through the drivers falling to 1.4 A should not
exceed 800 ms. See Braking section for more
information.
3Fault conditions that produce excessive junction
temperature will activate device thermal shutdown
circuitry. These conditions can be tolerated, but should
be avoided.
Features
„ Pin-for-pin replacement for A8902CLBA
„ Startup commutation circuitry
„ Sensorless commutation circuitry
„ Option of external sector data tachometer signal
„ Option of external speed control
„ Oscillator operation up to 20 MHz
„ Programmable overcurrent limit
„ Transconductance gain options: 500 mA/V or 250 mA/V
„ Programmable watchdog timer
„ Directional control
„ Serial Port Interface
„ TTL-compatible inputs
„ System diagnostics data out ported in real time
„ Dynamic braking through serial port or external terminal
Always order by complete part number:
Part Number Package
A8904SLB
24-pin batwing SOIC
A8904SLB-T 24-pin batwing SOIC; Lead-free
A8904SLP
28-pin SSOP with Exposed Thermal Pad
A8904SLP-T 24-pin SSOP with Exposed Thermal Pad; Lead-free




A8904SLB-T pdf, 반도체, 판매, 대치품
8904
3-PHASE BRUSHLESS DC
MOTOR CONTROLLER/DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25°C, VDD = 5.0 V
Characteristic
Logic Supply Voltage
Logic Supply Current
Undervoltage Threshold
Load Supply Voltage
Load Supply Current
Thermal Shutdown
Thermal Shutdown Hysteresis
Output Drivers
Output Leakage Current
Total Output ON Resistance
(source + sink + RS)
Output Sustaining Voltage
Clamp Diode Forward Voltage
Control Logic
Logic Input Voltage
Logic Input Current
BRAKE Threshold
BRAKE Hysteresis Current
BRAKE Current
DATA Output Voltage
CST Current
CST Threshold
Filter Current
Filter Threshold
CD Current
(CD1 or CD2)
CD Current Matching
CD Threshold
CD Input Leakage
Symbol
VDD
IDD
UVLO
VBB
IBB
TJ
TJ
IDSX
rDS(on)
VDS(sus)
VF
VIN(0)
VIN(1)
IIN(0)
IIN(1)
VBRK
IBRKL
IBRK
VOUT(0)
VOUT(1)
ICST
VCSTH
VCSTL
IFILTER
VFILTERTH
ICD
VCDTH
ICDIL
Test Conditions
Operating
Operating
Sleep mode
Decreasing VDD
Increasing VDD
Operating
Operating
Sleep mode
VBB = 14 V, VOUT = 14 V, sleep mode
VBB = 14 V, VOUT = 0 V
IOUT = 600 mA
VBB = 14 V, IOUT = IOUT(MAX), L = 3 mH
IF = 1.0 A
SECTOR DATA, RESET, CLK,
CHIP SELECT, OSC
VIN = 0 V
VIN = 5.0 V
VBRK = 750 mV
Brake set, D2 = 1, IBRK = 750 mV
IOUT = 500 µA
IOUT = -500 µA
Charging
Discharging, VCST = 2.5 V
High
Low
Charging
Discharging
Leakage, VFILTER = 2.5 V
Charging
Discharging
ICD(DISCHRG)/ICD(CHRG)
Min.
4.5
4.0
Limits
Typ. Max.
5.0 5.5
7.5 10
250 500
3.6 —
3.9 —
— 14
4.0 8.0
20 30
165 —
20 —
Units
V
mA
µA
V
V
V
mA
µA
°C
°C
— 200 300 µA
— -2.0 -15 µA
— 1.0 1.4
14 — —
— 1.25 1.5
V
V
2.0
1.5
3.5
-9.0
2.25
0.85
-9.0
9.0
1.57
-18
32
1.8
2.25
1.75
4.0
20
-10
500
2.5
1.0
-10
10
1.85
-20
40
2.0
2.5
0.8
-0.5
±1.0
2.0
1.5
-11
2.75
1.15
-11
11
±5.0
2.13
-22
48
2.2
2.75
1.0
V
V
µA
µA
V
µA
µA
V
V
µA
µA
V
V
µA
µA
nA
V
µA
µA
V
µA
Continued next page …
115 Northeast Cutoff, Box 15036
4 Worcester, Massachusetts 01615-0036 (508) 853-5000

4페이지










A8904SLB-T 전자부품, 판매, 대치품
8904
3-PHASE BRUSHLESS DC
MOTOR CONTROLLER/DRIVER
Terminal Functions
Terminal Name
Function
LOAD SUPPLY
CD2
VBB; the 5 V or 12 V motor supply.
One of two capacitors used to generate the ideal commutation points from
the back-EMF zero crossing points.
CWD Timing capacitor used by the watchdog circuit to blank out the back-EMF
comparators during commutation transients, and to detect incorrect motor
position.
CST Startup oscillator timing capacitor.
NC No( internal) connection.
OUTA
NC
Power amplifier A output to motor.
No (internal) connection.
GROUND
Power and logic ground and thermal heat sink.
POWER GROUND Power ground.
NC No (internal) connection.
OUTB
OUTC
CENTERTAP
Power amplifier B output to motor.
Power amplifier C output to motor.
Motor centertap connection for back-EMF detection circuitry.
BRAKE
Active low turns ON all three sink drivers shorting the motor windings to
ground. External capacitor and resistor at BRAKE provide brake delay.
The brake function can also be controlled via the serial port.
CRES
External reservoir capacitor used to hold charge to drive the source drivers’
gates. Also provides power for brake circuit.
ANALOG GROUND Analog ground.
FILTER
Analog voltage input/output to control motor current. Also, compensation node
for internal speed control loop.
SECTOR DATA
External tachometer input. Can use sector or index pulses from disk to
provide precise motor speed feedback to internal frequency-locked loop.
LOGIC SUPPLY
OSCILLATOR
VDD; the 5 V logic supply.
Clock input for the speed reference counter.
DATA OUT
Thermal shutdown indicator, FCOM, TACH, or SYNC signals available in
real time, controlled by 2-bit multiplexer via serial port.
NC No (internal) connection.
GROUND
Power and logic ground and thermal heat sink.
DIGITAL GROUND Logic ground.
RESET
NC
When pulled low forces the chip into sleep mode; clears all serial port bits.
No (internal) connection.
CHIP SELECT
CLOCK
Strobe input (active low) for data word.
Clock input for serial port.
DATA IN
Sequential data input for the serial port.
CD1 One of two capacitors used to generate the ideal commutation points from
the back-EMF zero crossing points.
* For the A8904SLP, ground terminals 1, 8, and 22 must be connected together externally.
A8904SLB
(SOIC)
1
2
3
4
5
6-7
8
9
10
11
12
13
14
15
16
17
18-19
20
21
22
23
24
A8904SLP
(HTSSOP)
15
16
17
18
19
20
21
22*
23
24
25
26
27
28
1*
2
3
4
5
6
7
8*
9
10
11
12
13
14
www.allegromicro.com
7

7페이지


구       성 총 18 페이지수
다운로드[ A8904SLB-T.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
A8904SLB-T

3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING

Allegro MicroSystems
Allegro MicroSystems

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵