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FA5571A 데이터시트 PDF




Fuji에서 제조한 전자 부품 FA5571A은 전자 산업 및 응용 분야에서
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부품번호 FA5571A 기능
기능 Switching Power Supply Control IC
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FA5571A 데이터시트, 핀배열, 회로
FA557171A72737455705671
Fuji Switching Power Supply Control IC
Green mode Quasi-resonant IC
FA5571/71A/72/73/74/
5570/5671
Application Note
Fuji Electric Co., Ltd.
AN-022E Rev.1.5
April 2011
1
http://store.iiic.cc/
April 2011
Fuji Electric Co., Ltd.
http://www.fujielectric.co.jp/products/semiconductor/




FA5571A pdf, 반도체, 판매, 대치품
FA557171A72737455705671
1. Overview
FA5571/71A/72/73/74/70/5671 is a quasi-resonant type switching power supply control IC with excellent stand-by
characteristics. Though it is a small package with 8 pins, it has a lot of functions and enables to decrease external parts.
Therefore it is possible to realize a small footprint and a high cost-performance power supply.
2. Features
A quasi-resonant type switching power supply.
A power supply with excellent standby characteristics.
Low power consumption with a built-in startup circuit.
Low current consumption, in operation: 1.35mA
Built-in maximum frequency limitation function: 120kHz(FA5571/72/73/74/70), 170kHz(FA5571A/5671)
Operation at light load (FA5571/71A/72/70/5671: built-in burst function, FA5573/74: built-in frequency reduction
function)
Built-in drive circuit possible to connect to a power MOSFET directly. Output current: 0.5A (sink) 0.25A (source)
Built-in overload protection function (FA5571/71A/73/70/5671: auto restart, FA5572/74: timer latch)
Built-in latch protection function with the secondary over-voltage detection.
Built-in transformer short circuit protection function.
Built-in low voltage malfunction protection circuit.
Package: SOP-8
Function list by types
Type
Overload Light load operation Maximum ZCD pin timer IS pin latch VCC pin OVP IS pin OCP
protection
blanking
latch Delay
shutdown
threshold
threshold
frequency
time TLAT1
threshold
FA5571
Auto restart
FA5571A
Burst
120kHz(TYP)
170kHz(TYP)
2.3us(TYP)
4.5us(TYP)
2.0V(TYP)
2.0V(TYP)
nonfunctional 1.0V(TYP)
nonfunctional 1.0V(TYP)
FA5570
Auto restart
FA5671
Burst
120kHz(TYP) nonfunctional nonfunctional nonfunctional 1.0V(TYP)
170kHz(TYP) nonfunctional nonfunctional 28V(TYP) 0.5V(TYP)
FA5572 Timer latch
Burst
120kHz(TYP) 2.3us(TYP) 2.0V(TYP) nonfunctional 1.0V(TYP)
FA5573 Auto restart Frequency reduction 120kHz(TYP) 2.3us(TYP) 2.0V(TYP) nonfunctional 1.0V(TYP)
FA5574 Timer latch Frequency reduction 120kHz(TYP) 2.3us(TYP) 2.0V(TYP) nonfunctional 1.0V(TYP)
3. Outline drawings
SOP-8
0°~10°
1 PIN MARK
5.0±0.25
1.27
0.4±0.1
Fuji Electric Co., Ltd.
AN-022E Rev.1.5
April 2011
0.2±0.1
4
http://store.iiic.cc/
http://www.fujielectric.co.jp/products/semiconductor/

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FA5571A 전자부품, 판매, 대치품
FA557171A72737455705671
5. Functional description of pins
Pin number
1
2
3
4
5
6
7
8
Pin name
ZCD
FB
IS
GND
OUT
VCC
NC
VH
Pin function
Zero current detection input
Feed-back input
Current sense input
Ground
Output
Power supply
High voltage input
6. Rating and characteristics
* “+” shows sink and “–“ shows source in current prescription.
(1) Absolute maximum rating
Item
Power supply voltage
OUT pin output peak current
OUT pin voltage
FB, IS pin input voltage
ZCD pin current
VH pin input voltage
Total loss (Ta<25 )
Maximum junction temperature
Storage temperature
Symbol
VCC
IOH
IOL
VOUT
VLT
ISOZCD
ISIZCD
VVH
Pd
Tj
Tstg
Rating
30
-0.25
+0.5
-0.3 to VCC+0.3
-0.3 to 5.0
-2.0
+3.0
-0.3 to 500
400 (SOP-8)
125
40 to +150
Unit
V
A
A
V
V
mA
V
mW
* Allowable loss reduction characteristics
400mW(SOP)
0
-30 25
85 125
Ambient temperature Ta [ ]
Fuji Electric Co., Ltd.
AN-022E Rev.1.5
April 2011
7
http://store.iiic.cc/
http://www.fujielectric.co.jp/products/semiconductor/

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