Electrical Characteristics ( Control Part )
TC=25 °C unless otherwise specified
Symbol
Parameter
Test Conditions
Min
Typ
Max Units
UVLO Section
VSTART Start Threshold Voltage
VSTOP Stop Threshold Voltage
14
15
9
16
V
V
VFB = GND
VFB = GND
8.4
9.6
Oscillator Section
FOSC
Initial Accuracy
57
--
64
±5
77
71
±10
82
KHz
%
--
Frequency Change With
Temperature (Note 2)
-25°C ≤ Ta ≤ +85°C
DMAX
Maximum Duty Cycle
73
%
FEEDBACK Section
IFB
Feedback Source Current
Ta=25°C, 0V<Vfb<3V
Vfb>6.5V
0.7
5.4
4
0.9
6
1.1
6.6
6
mA
V
VSD
Shutdown Feedback Voltage
Shutdown Delay Current
Idelay
5
mA
Ta=25°C, 5VδVfbδVSD
Reference Section
VREF
Reference Output Voltage (Note 1) Ta=25°C
4.8
--
5
5.2
0.6
V
mV/°C
A
Vref/∆T Temperature Stability (Note 1 , 2)
IOVER Peak Current Limit
-25°C ≤ Ta ≤ +85°C
0.3
2.0
Max. inductor current
1.62
2.38
Protection Section
VOVP
Over Voltage Protection
VCC > 20V
20
--
23
--
V
TSD
Thermal Shutdown Temperature
(Tj) (Note 1)
--
140
160
°C
Protection Section
ISTART
Start-up Current
VCC = 14V
--
--
100
3
170
6
µΑ
IOP
Operating Supply Current
(Control Part Only)
mA
VCC < 20V
Notes ;
1. These parameters, although guaranteed, are not 100% tested in production
2. These parameters, although guaranteed, are tested in EDS(water test) process
◎ SEMIHOW REV.PLIMILARY”DEC 2009
SEMIHOW [ SEMIHOW CO.,LTD. ]
