SG6905SZ Fairchild Semiconductor, SG6905SZ Datasheet - Page 12

• Manufacturer Part Number: SG6905SZ
• Description: IC PWM CTLR PFC/FLYBACK 20-SOP
• Manufacturer: Fairchild Semiconductor

Specifications of SG6905SZ

• Mode: Average Current
• Frequency - Switching: 65kHz
• Current - Startup: 10µA
• Voltage - Supply: 16 V ~ 20 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2007 Fairchild Semiconductor Corporation
SG6905 • Rev. 1.1.2
Function Protection Table
PFC_ON exceed V
OTP
Brownout
OVP(PFC)
UVP(PFC)
IMP open
PWM open loop
SS Pin pull low(=0V)
RI Pin open
Note:
1. The PFC stage is disabled, whenever the voltage at PFC_ON pin exceeds V
2. The RDY Pin is reset, whenever the voltage at PFC_ON pin exceeds V
Green Mode Function
occur, IC V
DD
PFC_OFF
PFC_ON
Item
reaches V
Item
OFF
DD-MIN
.
PWM GATE
No change
No change
No change
No change
OFF
OFF
OFF
OFF
OFF
PWM
12
PFC GATE
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
or UVP
OFF
.
FBPFC
, OVP
Short to ground
Short to ground
Short to ground
Open drain
Short to ground
Short to ground
Short to ground
Short to ground
Short to ground
FBPFC
PFC
RDY Pin
, V
IMP
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, V
RMS-UVP