NCP1072P100G(2012) 查看數據表（PDF） - ON Semiconductor
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NCP1072P100G Datasheet PDF : 26 Pages
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NCP1072, NCP1075
ELECTRICAL CHARACTERISTICS
(For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, VCC = 8 V unless otherwise noted)
Symbol
Rating
Pin
Min
Typ
Max
Unit
FREQUENCY FOLDBACK & SKIP
IFBfold Start of frequency foldback feedback level
IFBfold(end) End of frequency foldback feedback level, Fsw = Fmin
Fmin
The frequency below which skip−cycle occurs
IFBskip The feedback level to enter skip mode
Ifreeze Internal minimum current setpoint (IFB = −90 mA) in NCP1072
Ifreeze Internal minimum current setpoint (IFB = −90 mA) in NCP1075
RAMP COMPENSATION
4
−68
mA
4
−100
mA
−
21
25
29
kHz
4
−120
mA
88
mA
168
mA
Sa(65) The internal ramp compensation in NCP1072 (65 kHz version)
−
Sa(65) The internal ramp compensation in NCP1075 (65 kHz version)
−
Sa(100) The internal ramp compensation in NCP1072 (100 kHz version)
−
Sa(100) The internal ramp compensation in NCP1075 (100 kHz version)
−
Sa(130) The internal ramp compensation in NCP1072 (130 kHz version) (Note 4)
−
Sa(130) The internal ramp compensation in NCP1075 (130 kHz version)
−
PROTECTIONS
4.2
kA/s
7.5
kA/s
6.5
kA/s
11.5
kA/s
8.4
kA/s
15
kA/s
tSCP
trecovery
IOVP
tOVP
VHV(EN)
Fault validation further to error flag assertion
OFF phase in fault mode
VCC clamp current at which the switcher stops pulsing
The filter of VCC OVP comparator
The drain pin voltage above which allows MOSFET operate, which is
detected after TSD, UVLO, SCP, or VCC OVP mode.
−
40
53
ms
−
420
ms
1
6.0
8.5
11
mA
−
80
ms
5
72
91
110
V
TEMPERATURE MANAGEMENT
TSD Temperature shutdown (Guaranteed by design)
−
150
°C
Hysteresis in shutdown (Guaranteed by design)
−
50
°C
3. The final switch current is: IIPK(0) / (Vin/LP + Sa) x Vin/LP + Vin/LP x tprop, with Sa the built−in slope compensation, Vin the input voltage, LP
the primary inductor in a flyback, and tprop the propagation delay..
4. NCP1072 130 kHz on demand only.
5. Oscillator frequency is measured with disabled jittering.
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