NCP1207A, NCP1207B
www.onsemi.com
5
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 2)
mA
Internal IC Consumption, 1.0 nF Output Load on Pin 5,
F
SW
= 60 kHz
6 ICC2 − 1.6 2.0
(Note 2)
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 − Tss − 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
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
2. Max value at T
J
= 0°C.
