NCP1377, NCP1377B
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4
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= 25°C, for min/max values T
J
= −40°C to +125°C, Max T
J
= 150°C, V
CC
= 11 V unless otherwise noted.)
Characteristic Pin Symbol Min Typ Max Unit
SUPPLY SECTION
V
CC
Increasing Level at which the Current Source Turns−Off 6 VCC
ON
11.6 12.5 13.7 V
Minimum Operating Voltage after Turn−On 6 VCC
OFF
7.0 7.5 8.2 V
V
CC
Decreasing Level at which the Latchoff Phase Ends 6 VCC
latch
− 5.6 − 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, Latchoff Phase, V
CC
= 6.0 V 6 ICC3 − 220 − mA
INTERNAL STARTUP CURRENT SOURCE
High−Voltage Current Source, V
CC
= 10 V, V
pin8
= 50 V 8 IC1 2.4 4.0 6.0 mA
High−Voltage Current Source, V
CC
= 0 V, V
pin8
= 50 V 8 IC2 − 4.5 − mA
Startup Leakage, V
pin8
= 500 V 8 I
HVLeak
− 30 70 mA
High Voltage Minimum Startup, V
CC
= V
CC(on)
−0.2 V, I
CC
= 1 mA 8 HV
min
− 20 23.5 V
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
Input Bias Current @ 1.0 V Input Level on Pin 3 3 I
IB
− 0.02 − mA
Maximum Internal Current Setpoint 3 I
Limit
0.9 1.0 1.1 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
Sampling Delay After ON Time NCP1377
NCP1377B
1
1
T
sample
−
−
4.5
1.5
−
−
ms
OVP Internal Reference Level 1 V
ref
6.4 7.2 8.0 V
FEEDBACK SECTION
Internal Pullup 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
Pin1 Internal Resistance 1 R
int
− 28 − kW
Demag Propagation Delay 1 T
dem
− 210 − ns
Timeout After Last Demag Transition 1 Tout − 5.0 − ms
Internal Input Capacitance at Vpin 1 = 1.0 V 1 C
par
− 10 − pF
Minimum T
OFF
(Internal Blanking Delay After T
ON
) NCP1377
NCP1377B
1
1
T
blank
−
−
8.0
3.0
−
−
ms
1. Max value at T
j
= −40°C, please see characterization curves.
