SP6878 Datasheet, PDF (5/8 Pages) SYNC POWER Crop. – Quasi-Resonant PWM Controller

SP6878
Quasi-Resonant PWM Controller
TOFF
Maximum OFF Time
RFR = 20 KΩ
40 55 75 uS
Over Temp Protection ( OT Pin )
V_OT_open OT pin open voltage
VTH(OTP) OTP Threshold Voltage
IOT
Output Current of OT pin
RFR = 20KΩ
3.5
V
1.00 1.05 1.10 V
100
uA
Soft Start
T_soft
Internal soft startup
4
mS
Note: The OLP delay time is proportional to the period of switching cycle. So that, the lower FR resistor value will set the
higher switching frequency and the shorter OLP delay time.
2013/8/1 V3
Page 5