NCP1207A, NCP1207B
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (For typical values T
J
= 25°C, for min/max values T
J
= 0°C to +125°C, Max T
J
= 150°C,
V
CC
= 11 V unless otherwise noted)
Rating
Pin Symbol Min Typ Max Unit
DYNAMIC SELF-SUPPLY
V
CC
Increasing Level at which the Current Source Turns-off 6 VCC
OFF
10.8 12 12.9 V
V
CC
Decreasing Level at which the Current Source Turns-on 6 VCC
ON
9.1 10 10.6 V
V
CC
Decreasing Level at which the Latchoff Phase Ends 6 VCC
latch
- 5.3 - V
V
CC
Level at which Output Pulses are Disabled 6 UVLO - VCC
ON
-200mV
- V
Internal IC Consumption, No Output Load on Pin 5,
F
SW
= 60 kHz
6 ICC1 - 1.0 1.3
(Note 1)
mA
Internal IC Consumption, 1.0 nF Output Load on Pin 5,
F
SW
= 60 kHz
6 ICC2 - 1.6 2.0
(Note 1)
mA
Internal IC Consumption in Latchoff Phase 6 ICC3 - 330 -
mA
INTERNAL STARTUP CURRENT SOURCE (T
J
u 0°C)
High-voltage Current Source, V
CC
= 10 V 8 IC1 4.3 7.0 9.6 mA
High-voltage Current Source, V
CC
= 0 8 IC2 - 8.0 - mA
DRIVE OUTPUT
Output Voltage Rise-time @ CL = 1.0 nF, 10-90% of Output Signal
5 T
r
- 40 - ns
Output Voltage Fall-time @ CL = 1.0 nF, 10-90% of Output Signal 5 T
f
- 20 - ns
Source Resistance 5 R
OH
12 20 36
W
Sink Resistance 5 R
OL
5.0 10 19
W
CURRENT COMPARATOR (Pin 5 Unloaded)
Input Bias Current @ 1.0 V Input Level on Pin 3
3 I
IB
- 0.02 -
mA
Maximum Internal Current Setpoint 3 I
Limit
0.92 1.0 1.12 V
Propagation Delay from Current Detection to Gate OFF State 3 T
DEL
- 100 160 ns
Leading Edge Blanking Duration 3 T
LEB
- 380 - ns
Internal Current Offset Injected on the CS Pin during OFF Time 3 Iskip - 200 -
mA
OVERVOLTAGE SECTION (V
CC
= 11 V)
Sampling Delay after ON Time NCP1207A
NCP1207B
1 T
sample
- 4.5
1.5
-
ms
OVP Internal Reference Level 1 V
ref
6.4 7.2 8.0 V
FEEDBACK SECTION (V
CC
= 11 V, Pin 5 Loaded by 1.0 kW)
Internal Pull-up Resistor
2 Rup - 20 -
kW
Pin 3 to Current Setpoint Division Ratio - Iratio - 3.3 - -
Internal Soft-start - Ts s - 1.0 - ms
DEMAGNETIZATION DETECTION BLOCK
Input Threshold Voltage (Vpin 1 Decreasing)
1 V
th
35 50 90 mV
Hysteresis (Vpin 1 Decreasing) 1 V
H
- 20 - mV
Input Clamp Voltage High State (Ipin 1 = 3.0 mA)
Low State (Ipin 1 = -2.0 mA)
1
1
VC
H
VC
L
8.0
-0.9
10
-0.7
12
-0.5
V
V
Demag Propagation Delay 1 T
dem
- 210 - ns
Internal Input Capacitance at Vpin 1 = 1.0 V 1 C
par
- 10 - pF
Minimum T
OFF
(Internal Blanking Delay after T
ON
) NCP1207A
NCP1207B
1 T
blank
-
3.5
8.0
4.5
-
5.5
ms
Timeout After Last Demag Transition 1 T
out
- 5.0 -
ms
Pin 1 Internal Impedance 1 R
int
- 28 -
kW
1. Max value at T
J
= 0°C.
