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參數(shù)資料
| 型號(hào)： | FAN8038C |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | 4-Channel Motor Drive IC |
| 中文描述： | 4 CHANNEL CD MOTOR DRIVER, PQFP44 |
| 封裝： | 10 X 10 MM, QFP-44 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 405K |
| 代理商： | FAN8038C |
FAN8038C
11
6. DC-DC CONVERTER CONTROL CIRCUIT
6-1. Set to output voltage
The DC-DC converter output voltage, SVCC1, is set by internal resistors R3 and R4 and the voltage, SVCC1, is defined as
follows.
This voltage, SVCC1, can be varied with the addition of an external resistors R1 and R2 as shown Figure.2 and the voltage
is defined as follows.
Where, R1 and R2 are exteranl resistors, and R3 and R4 are internal resistors.
Figure 2. Schematic of DC-DC Converter
6-2. Power-on Reset function
If the output voltage of DC-DC conver, SVCC1,is over than 90%, the RSTOUT(pin3) goes from low level to high level, and
RST (pin34) goes to high level to low level. The reset voltage has 50mV of hysteresis to prevent output chattering.
6-3. Delayed Short Circuit Protection
When the error amplifier output (pin6) become high level state during the abnormal conditions such as over load or short
ciruit, the exteral capacitor, C
SCP
, is charged, and when the SCP (pin8) voltage reaches 1.25V(typ.), the PWM comparator
output, BDSW(pin5), is shwitch-off.
]
[
267
.
4
3
1
1
V
R
R
SVCC
=
+
=
]
[
267
.
×
4
2
4
2
4
2
4
2
3
1
3
1
1
V
R
R
R
R
R
R
R
R
R
R
R
R
SVCC
+
+
+
+
=
7
6
Triangular
Waveform
1.25V
2
Short Circuit Protection
Error Amp
1.267V
10uA
C
SCP
9
4
R1
R2
R3
R4
5
V
BAT
12
=
K
=
R
K
5
R
30
4
30
3
PWM
Comp
1.267V
3
34
SVCC1
SVCC1
C
DEDSET
C
OSC
K
65
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8039BD3 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 4Ch BTL Driver 1Ch DC Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8039BD3TF | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 4Ch BTL Driver 1Ch DC Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8039D3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Servo/Spindle Motor Controller/Driver |
| FAN8040 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
| FAN8040G3 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
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