NCP1215A
ELECTRICAL CHARACTERISTICS (VCC = 12 V, for typical values TJ = 25°C, for min/max values TJ = 0°C to +105°C, unless
otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
VOLTAGE FEEDBACK
Offset Voltage
Maximum CT Pin Voltage at FB Current = 25 mA (Including Voffset)
Maximum CT Pin Voltage at FB Current = 50 mA (Including Voffset)
CT PIN − OFF TIME CONTROL
Voffset
1.05
1.19
1.34
V
VCT−25mA
2.4
3.1
4.3
V
VCT−50mA
3.6
4.6
6.2
V
Source Current (CT Pin Grounded)
Source Current Maximum Voltage Capability
Minimum CT Pin Voltage (Pin Unloaded, Discharge Switch Turned On)
CURRENT SENSE
ICT
8.0
VCT−max
−
VCT−min
−
9.8
11.5
mA
6.5
−
V
−
20
mV
Minimum Source Current (IFB = 180 mA, CT Pin Grounded)
Maximum Source Current (IFB = 0 mA, CT Pin Grounded)
Comparator Threshold Voltage
Propagation Delay (CS Falling Edge to Gate Output)
GATE DRIVE
ICS−min
8.0
ICS−max
40
Vth
15
tdelay
−
12.5
49
42
215
16
mA
58
mA
80
mV
310
ns
Sink Resistance (Isink = 30 mA)
Source Resistance (Isource = 30 mA)
POWER SUPPLY
ROL
25
ROH
55
40
90
W
80
130
W
VCC Startup Voltage
Undervoltage Lockout Threshold Voltage
Hysteresis (Vstartup − VUVLO)
VCC Startup Current Consumption (VCC = 8.0 V)
VCC Steady State Current Consumption
(CGATE = 1.0 nF, fSW = 100 kHz, FB open)
Vstartup
VUVLO
Vhys
ICC−start
ICC−SW
−
7.2
2.2
−
0.55
12.5
9.0
3.5
2.8
0.9
14.2
V
−
V
−
V
6.5
mA
1.75
mA
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