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SDC11557 の電気的特性と機能

SDC11557のメーカーはSDCです、この部品の機能は「Single-Phase Full-Wave Motor Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 SDC11557
部品説明 Single-Phase Full-Wave Motor Driver
メーカ SDC
ロゴ SDC ロゴ 




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SDC11557 Datasheet, SDC11557 PDF,ピン配置, 機能
Single-Phase Full-Wave Motor Driver
Datasheet
SDC11557
General Description
The SDC11557 is a single phase full wave motor driver for
DC fan motors, and can apply to three type speed control
methods. The output signals of this IC are the
amplifications of hall input signals. It is suitable for both
game machine and CPU cooler that need silent fans. The
device is built-in lock protection. When the fan is locked,
the device will enter the lockup protection mode. It is also
with thermal shutdown function. In normal operation, the
supply current is less than 5mA. The SDC11557 is available
in MSOP-8 package.
Features
Silent driver
Built-in lock protection and auto restart function
Low standby current (PWM=0), supply current less
than 200uA
FG output
Built-in thermal protection circuit(RoHS Compliant)
Low duty start up
Applications
Motor drivers for silent fan motors
Pin Configuration
MSOP-8
Pin Number
1
2
3
4
5
6
7
8
OUT2 1
VCC 2
IN+ 3
IN- 4
8 GND
7 OUT1
6 PWM
5 FG
Figure 1. Pin Configuration
Pin Name
OUT2
VCC
IN+
IN-
FG
PWM
OUT1
GND
Function
Motor output terminal 2
Power supply terminal
Hall input terminal+
Hall input terminal-
FG signal output terminal
PWM signal input terminal
Motor output terminal 1
GND terminal
Table 1. Pin Description
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/8
www.sdc-semi.com

1 Page





SDC11557 pdf, ピン配列
Single-Phase Full-Wave Motor Driver
Datasheet
SDC11557
Absolute Maximum Ratings (Note: Stresses greater than those listed under Absolute Maximum Ratings may cause
permanent damage to the device.)
Parameter
Symbol
Conditions
Min Max Unit
VCC pin supply voltage VCC - -0.3 8.0 V
Output pin maximum output current
I OUT
-
- 1.0 A
Output pin output voltage
V OUT
-
-0.3 8.0 V
FG pin output voltage
VFG - -0.3 8.0 V
FG pin maximum output sink current
I FG
-
- 10.0 mA
Storage temperature range
T STG
-
-65 150 °C
Maximum lead soldering
temperature, 10 seconds
T SDR
-
- 260 °C
Maximum junction temperature
range
TJ
- -40 150 °C
Table 2. Absolute Maximum Ratings
Recommended Operating Conditions
Parameter
Symbol
VCC pin supply voltage range
Hall input voltage range
Ambient temperature
V CC
V HALL
Ta
Conditions
-
-
-
Min Max Unit
2.0 6.0 V
0.4
VCC-1.1
V
-40 105 °C
Table 3. Recommended Operating Conditions
Electrical Characteristics (Ta=25°C, VCC=5V, unless otherwise specified)
Parameter
Symbol
Conditions
Operating current
I CC1
Rotation mode and lock
protection mode
ICC2 Standby mode (PWM=0)
Lock detection on time
t ON
-
Lock detection off time
t OFF
-
Output driver saturation voltage
VO
IOUT = 250mA,
upper and lower total
FG pin low voltage
VFG IFG = 5mA
FG pin leakage current
I FGL
VFG= 5V
Input - output gain
GIO VOUT/(VIN+~VIN-)
PWM input high level voltage
V PWMH
-
PWM input low level voltage
V PWML
-
Min
-
-
0.35
3.5
-
-
-
44
0.5xVCC
0
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
Typ Max Unit
4 5 mA
0.1 0.2 µA
0.5 0.65 S
5 6.5 S
0.3 0.44 V
0.2 0.4 V
<0.1 1 µA
45 46 dB
-
VCC+0.5
V
-
0.2xVCC
V
3/8
www.sdc-semi.com


3Pages


SDC11557 電子部品, 半導体
Single-Phase Full-Wave Motor Driver
Datasheet
SDC11557
Quick Start and Standby Mode
This IC would enter standby mode when the PWM input
keeps low level for more than 66.5ms(TYP.). In standby
mode, it will shutdown amplifier and FG. Thus, the
PWM
supply current is around 100mA. In standby mode, the
lock protection function doesn’t work, therefore,
starting fan is unobstructed when releasing standby
mode.
66.5ms
(TYP.)
Lock protect
enable (internal)
enable
disable
(standby mode)
enable
Figure 6. Quick Start Waveform
Output Drivers
All four drivers in the bridge output are designed for
single phase full wave motor driver for fan motor. The
linear output architecture is used as output driver.
Low Duty Start up Function
When motor start-up from stop condition, outputs are
driven in not less than PWM 50% duty until detecting
motor rotation(max 250 ms). Even if input duty of PWM
is low, the motor can be started by this function. And if
input duty of PWM is high, this function can limited the
output current at starting moment, avoiding the impact
of the power. When the IC is in lock protection mode,
this function can also reduce the temperature rise.
If VCC is greater than 4V, outputs are driven in PWM 50%
and 25 kHz frequency when motor start-up or restart
from lock protection mode.
If VCC is less than 4V, this function guarantees outputs
keep continuous conduction 20 us at every rising edge of
PWM signal, after whether conduction is determined by
PWM signal: If FPWM is not less than 25 kHz and input
duty of PWM is lower than 50%, the function will
guarantee the starting duty greater than or equal to
50%;If input duty of PWM is higher than the guaranteed
duty, then the starting duty will be equal to PWM signal
duty; If FPWM is 50 kHz, the starting duty will be
100%;The opposite, if FPWM is less than 25 kHz and
input duty of PWM is lower than 50%,the starting duty
will be lower than 50%.
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
6/8
www.sdc-semi.com

6 Page



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部品番号部品説明メーカ
SDC11556

Single-Phase Full-Wave Motor Driver

SDC
SDC
SDC11557

Single-Phase Full-Wave Motor Driver

SDC
SDC
SDC11558

Single-Phase Full-Wave Motor Driver

SDC
SDC


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