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FSB127H Datenblatt(PDF) 8 Page - Fairchild Semiconductor

Teilenummer FSB127H
Bauteilbeschribung  mWSaver Fairchild Power Switch
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Hersteller  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FSB127H Datenblatt(HTML) 8 Page - Fairchild Semiconductor

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© 2011 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSB117H / FSB127H / FSB147H • Rev. 1.0.7
8
Electrical Characteristics (Continued)
VDD=15 V, TA=25C unless otherwise specified.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
Feedback Input Section
AV
Internal Voltage Dividing Factor of FB Pin
(12)
1/4.5
1/4.0
1/3.5
V/V
ZFB
Pull-Up Impedance of FB Pin
15
21
27
kΩ
VFB-OPEN
FB Pin Pull-Up Voltage
FB Pin Open
5.2
5.4
5.6
V
VFB-OLP
FB Voltage Threshold to Trigger Open-Loop
Protection
4.3
4.6
4.9
V
tD-OLP
Delay of FB Pin Open-Loop Protection
46
56
66
ms
VFB-N
FB Voltage Threshold to Exit Green Mode
VFB is Rising
2.4
2.6
2.8
V
VFB-G
FB Voltage Threshold to enter Green Mode
VFB is Falling
VFB-N-0.2
V
VFB-ZDC
FB Voltage Threshold to Enter Zero-Duty
State
VFB is Falling
1.95
2.05
2.15
V
VFB-ZDCR
FB Voltage Threshold to Exit Zero-Duty State VFB is Rising
VFB-ZDC
+0.1
V
IPK Pin Section
VIPK-OPEN IPK Pin Open Voltage
3.0
3.5
4.0
V
VIPK-H
Internal Upper Clamping Voltage of IPK Pin
3
(12)
V
VIPK-L
Internal Lower Clamping Voltage of IPK Pin
1.5
(12)
V
IPK
Internal Current Source of IPK Pin
TA=-40 to 105°C,
VIPK=2.25 V
45
50
55
µA
ILMT-FL-H
Current Limit Plateau when IPK
Pin Voltage is Internally Clamped
to Upper Limit
FSB117H
VIPK=3 V,
Duty>40%
0.72
0.80
0.88
A
FSB127H
0.90
1.00
1.10
FSB147H
1.35
1.50
1.65
ILMT-VA-H
Initial Current Limit when IPK Pin
Voltage is Internally Clamped to
Upper Limit
FSB117H
VIPK=3 V,
Duty=0%
ILMT-FL-H
-0.20
A
FSB127H
ILMT-FL-H
-0.25
FSB147H
ILMT-FL-H -
0.37
ILMT-FL-L
Current Limit Plateau when IPK
Pin Voltage is Internally Clamped
to Lower Limit
FSB117H
VIPK=1.5 V,
Duty>40%
0.36
0.40
0.44
A
FSB127H
0.45
0.50
0.55
FSB147H
0.67
0.75
0.83
ILMT-VA-L
Initial Current Limit when IPK Pin
Voltage is Internally Clamped to
Lower Limit
FSB117H
VIPK=1.5 V,
Duty=0%
ILMT-FL-L
-0.10
A
FSB127H
ILMT-FL-L
-0.12
FSB147H
ILMT-FL-L -
0.18
Continued on the following page…


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