SG6846 데이터 시트보기 (PDF) - Fairchild Semiconductor
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SG6846 Datasheet PDF : 16 Pages
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Electrical Characteristics
VDD = 15V and TA = 25°C unless otherwise noted.
Symbol
Parameter
VDD Section
VDD-OP Continuously Operating Voltage
VDD-ON Turn-On Threshold Voltage
VDD-OFF Turn-Off Voltage
VDD-TH-G
Low-Threshold Voltage for VDD to Exit
Green-OFF Mode
VDD-LH Threshold Voltage for Latch-Off Release
IDD-ST
Startup Current
IDD-OP
Operating Supply Current
VDD-OVP VDD Over-Voltage Protection (Latch Off)
tD-VDDOVP VDD OVP Debounce Time
IDD-H
VDD OVP Latch-Off Holding Current
VIN Section
VIN-OFF PWM Turn-Off Threshold Voltage
Conditions
VDD-ON – 0.16V
GATE Open
RI = 26kΩ
VDD = 5V, TA=27 oC
VIN-ON PWM Turn-On Threshold Voltage
Feedback Input Section
AV
Input-Voltage to Current-Sense Attenuation
ZFB
Input Impedance
VFBO
FB-Pin Open Voltage
Current Sense Section
ZSENSE
tPD
Input Impedance
Delay to Output
tLEB
VSTH1V
VSTH3V
VSTH1V-2/3
VSTH3V-2/3
Leading-Edge Blanking Time
Threshold Voltage for Current Limit
Threshold Voltage for Current Limit
OCP Threshold Voltage for Current Limit
OCP Threshold Voltage for Current Limit
VIN = 1V, RI = 26kΩ
VIN = 3V, RI = 26kΩ
VIN = 1V, RI = 26kΩ
VIN = 3V, RI = 26kΩ
tD-OCP
Delay Time for OTP
RI = 26kΩ
Min. Typ. Max. Unit
20
V
15.5 16.5 17.5 V
9.5 10.5 11.5 V
VDD-OFF
+1.25V
V
3
4
5
V
8
30 µA
3.7
5.0 mA
22.6 23.6 24.6 V
100
µs
45
µA
0.67 0.72 0.77 V
VIN-OFF
+0.20
V
1/4.2
V/V
4.0
5.5
7.0 kΩ
6.2
V
12
kΩ
100 200 ns
360
ns
0.78 0.83 0.88 V
0.65 0.70 0.75 V
0.56 0.61 0.66 V
0.46 0.51 0.56 V
82
96
110 ms
Continued on following page…
© 2008 Fairchild Semiconductor Corporation
SG6846 • Rev. 1.3.1
6
www.fairchildsemi.com
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