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부품번호 | FA5640 기능 |
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기능 | Switching Power Supply Control IC | ||
제조업체 | Fuji | ||
로고 | |||
전체 35 페이지수
FA5640/41/42
Fuji Switching Power Supply Control IC
Green mode Quasi-resonant IC
FA5640/41/42
Application Note
Fuji Electric Co., Ltd.
AN-064E Rev.1.1
April 2011
April 2011
Fuji Electric Co., Ltd.
1 http://www.fujielectric.co.jp/products/semiconductor/
FA5640/41/42
1. Overview
FA5640 series are 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 size 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 achieved by integrated startup circuit
• Low current consumption, During operation: 0.85 mA
• Control of number of bottom skips by on-off width detection
• Burst operation function under light load
• Built-in drive circuit directly connectable to a power MOSFET, Output current: 0.5 A (sink)/0.25 A (source)
• Built-in overload protection function
• Built-in latch protection function based on overvoltage detection on the secondary side
• Maximum input threshold voltage of IS pin and threshold voltage of stopping on-pulse are compensated by detecting
high-line voltage.
• Built-in under voltage lock out function, ON threshold voltage: 14 V and 10 V
• Package: SOP-8
Function list by types (Lineup is under review.)
Type
Overload
protection
ON threshold
voltage
Operation
compensation
Minimum
switching
frequency
Delay time of
restart
FA5640 Auto recovery
14V
Yes
No
25us
FA5641 Auto recovery
14V
Yes
25kHz
7.6us
FA5642 Auto recovery
10V
No
No
25us
* See 10. (9) “Other advice on designing” for details of the lineup without the minimum oscillating frequency function.
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-064E Rev.1.1
April 2011
0.2±0.1
4
http://www.fujielectric.co.jp/products/semiconductor/
4페이지 FA5640/41/42
5. Functional description of pins
Pin number
1
2
3
4
5
6
7
8
Pin name
ZCD
FB
IS
GND
OUT
VCC
(N.C.)
VH
Pin function
Zero current detection, OVP detection
Feedback input, OLP detection, Burst operation control
Current sense input, Over-current limiter, Standby signal detection
Ground
Output
Power supply, UVLO, VH pin current control
(No connection)
High voltage input
6. Rating and characteristics
* “+” shows sink and “–“ shows source in current prescription.
(1) Absolute maximum ratings
Item
Symbol
Rating
Unit
Supply voltage
Peak current at OUT pin (Note 1)
The voltage at OUT pin
Input voltage at FB and IS pin
The current at FB and IS pin
The current at ZCD pin
The voltage at ZCD pin
Input voltage at VH pin
Power dissipation(Ta=25℃)
Operating junction temperature
Storage temperature
Vcc
IoH
IoL
Vout
Vfb, Vis
Ifb, Iis
IsoZCD
IsiZCD
Vzcd
VVH
Pd
Tj
Tstg
28
-0.25
+0.5
-0.3 to Vcc+0.3
-0.3 to 5.0
-0.3 to +0.3
-2.0
+3.0
-2 to +8
-0.3 to 500
400
-40 to +125
-40 to +150
V
A
A
V
V
mA
mA
mA
V
V
mW
℃
℃
Note 1) Please consider power supply voltage and load current well and use this IC within maximum power
dissipation, operating junction temperature and recommended ambient temperature in operation. The IC
may cross over maximum power dissipation at normal operating condition by power supply voltage or load
current within peak current absolute maximum rating.
* Allowable loss reduction characteristics
400
Package thermal resistor
θj-a= 250℃/W
0
-40 25
85 125
周囲温度
Ambiance temperature Ta [℃]
Fuji Electric Co., Ltd.
AN-064E Rev.1.1
April 2011
7
http://www.fujielectric.co.jp/products/semiconductor/
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부품번호 | 상세설명 및 기능 | 제조사 |
FA5640 | Switching Power Supply Control IC | Fuji |
FA5641 | Switching Power Supply Control IC | Fuji |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |