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FAN6862 Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part # FAN6862
Description  Highly Integrated Green-Mode PWM Controller
Download  15 Pages
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN6862 Datasheet(HTML) 5 Page - Fairchild Semiconductor

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© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6862 • Rev. 1.0.1
5
Electrical Characteristics
VDD = 15V and TA = 25°C unless otherwise noted.
Symbol
Parameter
Test Condition
Min.
Typ. Max. Unit
VDD Section
VDD-OP
Continuously Operating Voltage
24
V
VDD-ON
Turn-on Threshold Voltage
15
16
17
V
VDD-OFF
Turn-off Voltage
7.5
8.5
9.5
V
VDD-OVP
VDD Over-Voltage Protection (Latch-Off)
24
25
26
V
VDD-LH
Threshold voltage for Latch-Off release
3
4
5
V
IDD-ST
Startup Current
VDD-ON–0.16V
8
30
μA
IDD-OP
Normal Operating Supply Current
CL=1nF
3
4
mA
IDD-BM
Green-Mode Operating Supply Current
GATE open, VFB=VFB-G
2.5
mA
VDD-OVP
VDD Over-Voltage Protection
24
25
26
V
tD-VDDOVP
VDD OVP Debounce Time
30
50
μs
IDD-LH
Latch-Off Holding Current
VDD=5V
40
65
μA
Feedback Input Section
AV
Input-Voltage to Current-Sense
Attenuation
1/4
1/3.5
1/3
V/V
ZFB
Input Impedance
5.5
kΩ
VFB-OPEN
FB Pin Open Voltage
5.0
5.2
5.4
V
VFB-OLP
Threshold Voltage for Open-Loop
Protection
4.3
4.6
4.9
V
tD-OLP
Open-Loop Protection Delay Time
53
56
60
ms
Current Sense Section
tPD
Delay to Output
100
250
ns
tLEB
Leading-Edge Blanking Time
270
360
ns
VSTHFL
Flat Threshold Voltage for Current Limit
Duty>51%
0.5
V
VSTHVA
Valley Threshold Voltage for Current Limit Duty=0%
0.44
V
VSLOPE
Slope Compensation
Duty=DCYMAX
0.273
V
tSOFT-START
Period During Startup time
4
ms
Oscillator Section
fOSC
Normal PWM Frequency
Center Frequency
VFB>VFB-N
62
65
68
Hopping Range
VFB≥VFB-N
±
4.2
Hopping Range
VFB=VFB-G
±
2.9
thop-1
Hopping Period 1
VFB≥VFB-N
4.4
ms
thop-3
Hopping Period 3
VFB=VFB-G
11.5
ms
fOSC-G
Green Mode Minimum Frequency
22.5
kHz
VFB-N
FB Threshold Voltage For Frequency
Reduction
2.2
V
VFB-G
FB Voltage at fOSC-G
2.1
V
VFB-ZDC
FB Threshold Voltage for Zero Duty
1.7
V
fDV
Frequency Variation vs. VDD Deviation
VDD=11.5V to 20V
0
0.02
2.00
%
fDT
Frequency Variation vs. Temperature
Deviation
TA= -40 to +105°C
2
%
Continued on the following page…


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