參數(shù)資料
型號: FAN6921MRMY
廠商: Fairchild Semiconductor
文件頁數(shù): 10/24頁
文件大小: 1210K
描述: IC CTLR PFC/FLYBACK 16-SOICN
標準包裝: 2,500
模式: 臨界傳導(CRM)
電流 - 啟動: 10µA
電源電壓: 8.5 V ~ 25 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC N
包裝: 帶卷 (TR)
 
?2009 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN6921MR Rev. 1.0.4
10
Electrical Characteristics (Continued)
V
DD
=15 V, T
A
=-40癈 ~105癈 (T
A
=T
J
), unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.     Units
PWM STAGE
Feedback Input Section
A
V
Input-Voltage to Current Sense
Attenuation
(4)
 
A
V
=砎
CSPWM
 /砎
FB
,
0
CSPWM
<0.9 
1/2.75 
1/3.00 
1/3.25 
V/V 
Z
FB
Input Impedance
(4)
 
FB>V
G
 
3
5
7
k&
I
OZ
Bias Current
FB=V
OZ
 
 
1.2
2.0
mA
V
OZ
 
Zero Duty-cycle Input Voltage
 
0.7
0.9
1.1
V
V
FB-OLP
 
Open-Loop Protection Threshold
Voltage
 
3.9
4.2
4.5
V
t
FB-OLP
 
The Debounce Time for Open
Loop Protection
 
40
50
60
ms
t
FB-SS
 
Internal Soft-Start Time
(4)
 
V
FB
=0 V~3.6 V
8.5
9.5
10.5
ms
DET Pin OVP and Valley Detection Section
V
DET-OVP
Comparator Reference Voltage     
2.45
2.50 
2.55 
V 
Av
Open-Loop Gain
(4)
 
 
 
60
 
dB
BW
Gain Bandwidth
(4)
 
 
 
1
 
MHz
t
DET-OVP
Output OVP(Latched) Debounce
Time
 
100
150
200
I
DET-SOURCE
    Maximum Source Current
V
DET
=0 V
 
 
1
mA
V
DET-HIGH
     Upper Clamp Voltage
I
DET
=-1 mA
 
 
5
V
V
DET-LOW
     Lower Clamp Voltage
I
DET
=1 mA
0.5
0.7
0.9
V
t
VALLEY-DELAY
 
Delay Time from Valley Signal
Detected to Output Turn-on
(4)
 
 
150
200
250
ns
t
OFF-BNK
 
Leading-Edge Blanking Time for
DET-OVP (2.5 V) and Valley
Signal when PWM MOS Turns
Off
(4)
 
 
3
4
5
t
TIME-OUT
 
Time-Out After t
OFF-MIN
 
8
9
10
PWM Oscillator Section
t
ON-MAX-PWM
    Maximum On Time
 
38
45
52
t
OFF-MIN
Minimum Off Time
V
FB
gV
N
, T
A
=25癈
 
 
7
8
9
V
FB
=V
G
 
32
37
42
V
N
 
Beginning of Green-On Mode at
FB Voltage Level
 
1.95
2.10
2.25
V
V
G
 
Beginning of Green-Off Mode at
FB Voltage Level
 
1.00
1.15
1.30
V
V
G
 
Hysteresis for Beginning of
Green-Off Mode at FB Voltage
Level
 
 
0.1
 
V
Continued on the following page&
 
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