NCP1205
ELECTRICAL CHARACTERISTICS (continued) (For typical values TA = 25°C, for min/max values TJ = 25°C to +125°C,
Max TJ = 150°C, VCC = 12 V unless otherwise noted.)
Pin No.
Characteristics
PDIP−8 PDIP−14 SOIC−16 Symbol Min Typ Max Unit
Current Sense Comparator (continued)
Propagation Delay from Current Detection to Gate OFF
6
11
12
Tdel
−
200 250 ns
State
Leading Edge Blanking (LEB)
Frequency Modulator
Minimum Frequency Operation @ Ct = 1.0 ηF and
VCC = 30 V
Maximum Frequency Operation @ Ct = 1.0 ηF and
VCC = 30 V
Minimum Ct Charging Current (Note 4)
Maximum Ct Charging Current (Note 4)
Discharge Time @ Ct = 1.0 ηF
6
11
12
Tleb
−
200
−
ns
4
5
4
5
4
5
4
5
4
5
6
Fmin
−
0
−
kHz
6
Fmax
90
110 125 kHz
6
ICtmin
−
0
−
mA
6
ICtmax 280
350
420
mA
6
−
−
500
−
ns
Drive Output
Output Voltage Rise Time @ CL = 1.0 ηF (DV = 10 V)
7
12
Output Voltage Fall Time @ CL = 1.0 ηF (DV = 10 V)
7
12
Clamped Output Voltage @ VCC = 30 V (Note 5)
7
12
Voltage Drop on the Stage @ VCC = 10 V (Note 5)
12
12
Undervoltage Lockout
Startup Threshold (VCC Increasing)
8
13
Minimum Operating Voltage (VCC Decreasing)
8
13
Startup Current Source
Maximum Voltage, Pin 1 Grounded
1
1
13
tr
−
30
50
ns
13
tf
−
30
50
ns
13
VDRV
11
13
16
V
12
VDRV
−
−
0.5
V
14
UVLOH 13.5
15
16.5
V
14
UVLOL 6.5
7.2
8.0
V
1
−
−
450
−
V
Maximum Voltage, Pin 1 Decoupled (470 mF)
Startup Current Source Flowing through Pin 1
Leakage Current in Offstate @ Vpin 1 = 500 V
1
1
1
1
1
1
1
−
−
500
−
V
1
−
2.3
3.0
4.8
mA
1
−
−
32
70
mA
Device Current Consumption
VCC less than UVLOH
8
13
14
−
−
1.5
1.8
mA
VCC = 30 V and Fsw = 2.0 kHz, CL = 1.0 ηF
8
13
14
−
−
1.2
3.0
mA
VCC = 30 V and Fsw = 125 kHz, CL = 1.0 ηF
8
13
14
−
−
3.0
4.0
mA
Startup Current to VCC Capacitor
8
13
14
−
1.4
−
−
mA
4. Typical capacitor swing is between 0.5 V and 3.5 V.
5. Guaranteed by design, TJ = 25°C.
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