NCP1205 ON Semiconductor, NCP1205 Datasheet - Page 7

• Manufacturer Part Number: NCP1205
• Description: Single Ended Pwm Controller Featuring Qr Operation And Soft Frequency Foldback
• Manufacturer: ON Semiconductor

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