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PDF SDC11170 Data sheet ( Hoja de datos )
| Número de pieza | SDC11170 | |
| Descripción | Single-Phase Full-Wave Motor Driver | |
| Fabricantes | SDC | |
| Logotipo |  |
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Single-phase Full-wave Motor Driver
Datasheet
SDC11170
General Description
SDC11170 is a single-phase full-wave driver for fan motor.
It features a variable speed control method using both
PWM input and thermistor and a high-efficiency driver
architecture. An external filter is introduced to reduce the
vibration and acoustic noise. SDC11170 is ideal for a quiet
and high-efficiency cooler fan.
Applications
CPU cooler fan motor
Features
Single-phase full-wave drive(18V~1.2A output
transistor incorporated)
Triangular wave oscillation voltage and minimum
speed settable
6V , Hall bias and FG output
Kick-back absorption circuit incorporated
Ineffective current reduced during phase shift
Regeneration diodes incorporated with less external
parts
Pin Configuration
SSOP-20
OUT2 1
VM 2
VCC 3
WH 4
WL 5
VTH 6
RMI 7
PWM 8
CPWM 9
FD 10
Figure 1. Pin Configuration
20 PGND
19 OUT1
18 SGND
17 6VREG
16 CT
15 IN-
14 HB
13 IN+
12 FG
11 FO
Pin Number
1
2
3
4
5
6
7
8
9
10
Pin Name
OUT2
VM
VCC
WH
WL
VTH
RMI
PWM
CPWM
FD
Function
Output 2
Motor power
Chip power
Triangular wave oscillation upper voltage
Triangular wave oscillation lower voltage
Thermistor input
Minimum pulse width setting
PWM input
Triangular wave oscillation capacitor
External filter driver
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/10
www.sdc-semi.com
1 page  
Single-phase Full-wave Motor Driver
CT IN- IN+
HL
L
L
H
H
L
LH
H
H
L
L
H
FO-L: FO<CPWM ; FO-H: FO>CPWM
FO
L
H
X
Power Dissipation Curve
Pd(mW80)0
700
600
500
400
300
200
100
OUT1
H
L
OFF
L
H
OFF
OUT2
L
H
L
OFF
OFF
H
Table 5. Truth Table
FG
L
OFF
L
OFF
L
OFF
0 20 40 60 80 90 100 120 Ta(°C)
Typical Application
Figure 3. Power Dissipation Curve(SSOP-20)
Datasheet
SDC11170
Mode
Running-drive
Running-regeneration
Lock protection
VCC
R1
R2
CP
R4
R9
CF
R3 R5
R6
0
12
HALL
0
R10
R7
CT
R11
R8
NTC
14 HB
15 IN-
3
VCC
13 IN+
17
4
6VREG
WH
5 WL
9
11
10
CPWM
FO
FD
6 VTH
7 RMI
16 CT GND
18
2
VM
FG 12
OUT1 19
OUT2 1
PWM 8
GND
20
CM
FG
PWM
Figure 4. Typical Application
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/10
www.sdc-semi.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SDC11170.PDF ] | |
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