SG3526
ELECTRICAL CHARACTERISTICS (continued)
Characteristics
PWM COMPARATOR SECTION (Note 10)
Minimum Duty Cycle
(VCompensation = +0.4 V)
Maximum Duty Cycle
(VCompensation = +3.6 V)
DIGITAL PORTS (SYNC, SHUTDOWN, RESET)
Output Voltage
(High Logic Level) (Isource = 40 μA)
(Low Logic Level) (Isink = 3.6 mA)
Input Current ⎯ High Logic Level
(High Logic Level) (VIH = +2.4 V)
(Low Logic Level) (VIL = +0.4 V)
CURRENT LIMIT COMPARATOR SECTION (Note 12)
Sense Voltage (RS ≤ 50 Ω)
Input Bias Current
SOFT−START SECTION
Error Clamp Voltage (Reset = +0.4 V)
CSoft−Start Charging Current (Reset = +2.4 V)
OUTPUT DRIVERS (Each Output, VC = +15 Vdc, unless otherwise noted.)
Output High Level
Isource = 20 mA
Isource = 100 mA
Output Low Level
Isink = 20 mA
Isink = 100 mA
Collector Leakage, VC = +40 V
Rise Time (CL = 1000 pF)
Fall Time (CL = 1000 pF)
Supply Current
(Shutdown = +0.4 V, VCC = +35 V, RT = 4.12 kΩ)
10. fosc = 40 kHz (RT = 4.12 kΩ ± 1%, CT = 0.01 μF ± 1%, RD = 0 Ω)
11. 0 V ≤ VCM ≤ +5.2 V
12. 0 V ≤ VCM ≤ +12 V
Symbol Min
Typ
Max Unit
DCmin
−
−
0
%
DCmax
45
49
−
%
V
VOH
2.4
4.0
−
VOL
−
0.2
0.4
μA
IIH
−
−125 −200
IIL
−
−225 −360
Vsense
IIB
80
100
120
mV
−
−3.0
−10
μA
−
0.1
0.4
V
ICS
50
100
150
μA
VOH
V
12.5 13.5
−
12
13
−
VOL
V
−
0.2
0.3
−
1.2
2.0
IC(leak)
−
50
150
μA
tr
−
0.3
0.6
μs
tf
−
0.1
0.2
μs
ICC
−
18
30
mA
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