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FA5310BP の電気的特性と機能

FA5310BPのメーカーはFuji Electricです、この部品の機能は「Bipolar IC For Switching Power Supply Control」です。


製品の詳細 ( Datasheet PDF )

部品番号 FA5310BP
部品説明 Bipolar IC For Switching Power Supply Control
メーカ Fuji Electric
ロゴ Fuji Electric ロゴ 




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FA5310BP Datasheet, FA5310BP PDF,ピン配置, 機能
FA531XFA531X series series
FA5310BP(S), FA5314P(S), FA5316P(S)
FA5311BP(S), FA5315P(S), FA5317P(S)
s Description
The FA531X series are bipolar ICs for switching power supply
control that can drive a power MOSFET.
These ICs contain many functions in a small 8-pin package.
With these ICs, a high-performance and compact power
supply can be created because not many external discrete
components are needed.
s Features
• Drive circuit for connecting a power MOSFET
• Wide operating frequency range (5 to 600kHz)
• Pulse-by-pulse overcurrent limiting function
• Overload cutoff function (Latch or non-protection mode
selectable)
• Output ON/OFF control function by external signal
• Overvoltage cutoff function in latch mode
• Undervoltage malfunction prevention function
• Low standby current (90µA typical)
• Exclusive choices by circuits (See selection guide on page 25)
• 8-pin package (DIP/SOP)
s Applications
• Switching power supply for general equipment
Bipolar IC
For Switching Power Supply Control
s Dimensions, mm
SOP-8
8
5
14
6.05
0.4±0.1 1.27±0.2
DIP-8
8
5
0.6
1 9.3 4
1.5
s Block diagram
FA5310BP(S)/FA5311BP(S)/FA5316P(S)/FA5317P(S)
2.54±0.25 0.5±0.1
0~15˚
7.6
0.3 +–00.1.05
0~15˚
Pin Pin
No. symbol
1 RT
2 FB
3 IS (+)
4 GND
5 OUT
6 VCC
7 CT
8 CS
Description
Oscillator timing resistor
Feedback
Overcurrent (+) detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
FA5314P(S)/FA5315P(S)
Pin Pin
No. symbol
1 RT
2 FB
3 IS (–)
4 GND
5 OUT
6 VCC
7 CT
8 CS
Description
Oscillator timing resistor
Feedback
Overcurrent (–) detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
1

1 Page





FA5310BP pdf, ピン配列
FA531X series
Overcurrent limiting circuit section
Item
Input threshold voltage (Pin 3)
Overcurrent detection terminal source current
Delay time
Latch-mode cutoff circuit section
Item
CS terminal sink current
Cutoff threshold voltage (Pin 8)
Overload cutoff circuit section
Item
Cutoff-start voltage (Pin 2)
Undervoltage lockout circuit section
Item
OFF-to-ON threshold voltage
ON-to-OFF threshold voltage
Output section
Item
L-level output Voltage
H-level output Voltage
Rise time
Fall time
Output ON/OFF circuit section
Item
CS terminal source current
OFF-to-ON threshold Voltage (Pin 8)
ON-to-OFF threshold Voltage (Pin 8)
Overall device
Item
Standby current
Operating-state supply current
OFF-state supply current
Cutoff-state supply current
Symbol
VTH IS
IIS
TPD IS
Test condition
Pin 3=0V
FA5310/11/16/17 FA5314/15
Unit
Min. Typ. Max. Min. Typ. Max.
0.21 0.24 0.27 –0.21 –0.17 –0.14 V
–300 –200 –100 –240 –160 –80 µA
150 200 ns
Symbol
ISINK CS
VTH CS
Test condition
Pin 8=6V, Pin 2=1V
Min.
25
6.5
Typ.
45
7.0
Max.
65
7.5
Unit
µA
V
Symbol Test condition
VTH FB
Min.
2.6
Typ.
2.8
Max.
3.1
Unit
V
Symbol
VCC ON
VCC OFF
Test condition
FA5310/11
FA5314/15/16/17 Unit
Min. Typ. Max. Min. Typ. Max.
15.5 16.0 16.5 14.8 15.5 16.2 V
8.20 8.70 9.20 7.70 8.40 9.10 V
Symbol
VOL
VOH
tr
tf
Test condition
FA5310/11/14/15 FA5316/17
IO=100mA
IO=50mA
IO=–100mA
IO=–50mA
VCC=18V
VCC=18V
No load
No load
No load
No load
Min.
16.0
Typ.
1.30
16.5
50
50
Max.
1.80
Unit
V
V
ns
ns
Symbol Test condition
Isource cs Pin 8=0V
VTH ON CS terminal voltage OFFON
VTH OFF CS terminal voltage ONOFF
Min.
–15
Typ.
–10
0.56
0.42
Max.
–5
Unit
µA
V
V
Symbol
ICC ST
ICC OP
ICC OFF
ICCL
Test condition
VCC=14V
Min.
Typ.
90
9
1.1
1.1
Max.
150
15
1.8
1.8
Unit
µA
mA
mA
mA
3


3Pages


FA5310BP 電子部品, 半導体
4.2 Overload shutdown
Figure 9 shows the overload shutdown circuit, and Figure 10 is
a timing chart which illustrates overload shutdown operation.
If the output voltage drops due to an overload or short-circuit,
the output voltage of the FB pin rises. If FB pin voltage
exceeds the reference voltage (2.8V) of comparator C3, the
output of comparator C3 switches low to turn transistor Q off.
In normal operation, transistor Q is on and the CS pin is
clamped at 3.6V by zener diode Zn. With Q off, the clamp is
released and the 10µA constant-current source begins to
charge capacitor CS again and the CS pin voltage rises. When
the CS pin voltage exceeds the reference voltage (7.0V) of
comparator C2, the output of comparator C2 switches high to
turn the bias circuit off. The IC then enters the latched mode
and shuts the output down. Shutdown current consumption is
400µA(VCC=9V). This current must be supplied through the
startup resistor. The IC then discharges the MOSFET gates.
Shutdown operation initiated by an overload can be reset by
lowering supply voltage VCC below VCC OFF or forcing the CS
pin voltage below 7.0V.
The period tOL from the time that the output is short-circuited to
the time that the bias circuit turns off is given by the following
equation:
tOL(mS)=340Cs(µF)................................ ........... (3)
4.3 Overvoltage shutdown
Figure 11 shows the overvoltage shutdown circuit, and Figure
12 is a timing chart which illustrates overvoltage shutdown
operation.
The optocoupler PC1 is connected between the CS and VCC
pins. If the output voltage rises too high, the PC1 turns on to
raise the voltage at the CS pin via resistor R6. When the CS
pin voltage exceeds the reference voltage (7.0V) of
comparator C2, comparator C2 switches high to turn the bias
circuit off. The IC then enters the latched mode and shuts the
output down. The shutdown current consumption of the IC is
400µA(VCC=9V). This current must be applied via startup
resistor R5.
The IC then discharges the MOSFET gates.
The shutdown operation initiated by an overvoltage condition
can be reset by lowering supply voltage VCC below VCC OFF or
forcing the CS pin voltage below 7.0V.
During normal operation, the CS pin is clamped by a 3.6V
zener diode with a sink current of 65µA max. Therefore, a
current of 65µA or more must be supplied by the optocoupler
in order to raise the CS pin voltage above 7.0V.
FA531X series
Fig. 9 Overload shutdown circuit
Fig. 10 Overload shutdown timing chart
Fig. 11 Overvoltage shutdown circuit
Fig. 12 Overvoltage shutdown timing chart
6

6 Page



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部品番号部品説明メーカ
FA5310BP

Bipolar IC For Switching Power Supply Control

Fuji Electric
Fuji Electric
FA5310BPS

Bipolar IC For Switching Power Supply Control

Fuji Electric
Fuji Electric


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