SG6905SZ Fairchild Semiconductor, SG6905SZ Datasheet - Page 11

• 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
Electrical Characteristics
V
Symbol
RDY Section
OTP Section
Soft-Start Section
V
V
V
I
DD
FB-RDY-
OTP-OFF
FB-RDY-
OTP-ON
HIGH
HIGH
I
V
t
R
OTP
I
=15V, T
otp
SS
OL
D
RDY is a High Impedance at the Voltage of
FBPFC>V
The Leakage Current of RDY is a High
Impedance at the Voltage of FBPFC
Output-Voltage Low for RDY is Failed
OTP Pin Output Current
Recovery Level on OTP
OTP Threshold Voltage
OTP Debounce Time
Constant Current Output for Soft-Start
Discharge R
A
=25°C, unless otherwise noted.
FB-RDY-HIGH
DSon
Parameter
and PFC_ON Low
Figure 5. PWM Frequency
FBPFC=2V
I
R
R
RT=24kΩ
FBPWM=FB
SINK
I
I
=24kΩ
=24kΩ
11
=1mA
Conditions
OPEN-LOOP
Min.
1.35
1.15
2.6
90
44
8
Typ.
1.40
1.20
100
470
2.7
50
Max.
1.45
1.25
110
2.8
0.5
10
25
56
www.fairchildsemi.com
Units
μA
μA
µA
μs
Ω
V
V
V
V