NCV887001 Просмотр технического описания (PDF) - ON Semiconductor
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NCV887001 Datasheet PDF : 11 Pages
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NCV8870
ELECTRICAL CHARACTERISTICS (−40°C < TJ < 150°C, 3.2 V < VIN < 40 V, unless otherwise specified) Min/Max values are
guaranteed by test, design or statistical correlation.
Characteristic
Symbol
Conditions
Min Typ Max Unit
VOLTAGE ERROR OPERATIONAL TRANSCONDUCTANCE AMPLIFIER
Transconductance
VEA output resistance
VFB input bias current
Reference voltage
VEA maximum output voltage
VEA minimum output voltage
VEA sourcing current
VEA sinking current
GATE DRIVER
gm,vea
Ro,vea
Ivfb,bias
Vref
Vc,max
Vc,min
Isrc,vea
Isnk,vea
VFB – Vref = ± 20 mV
Current out of VFB pin
VEA output current, Vc = 2.0 V
VEA output current, Vc = 0.7 V
0.8
1.2
1.5
mS
2.0
−
−
MW
−
0.5
2.0
mA
1.176 1.200 1.224
V
2.5
−
−
V
−
−
0.3
V
80
100
−
mA
80
100
−
mA
Sourcing current
Isrc
VDRV ≥ 6 V, VDRV − VGDRV = 2 V
NCV887000
NCV887001
mA
600 800
−
600 800
−
Sinking current
Isink
VGDRV ≥ 2 V
NCV887000
NCV887001
mA
500 600
−
500 600
−
Driving voltage dropout
Driving voltage source current
Backdrive diode voltage drop
Driving voltage
Vdrv,do
Idrv
Vd,bd
VDRV
VIN − VDRV, IvDRV = 10 mA
VIN − VDRV = 1 V
VDRV − VIN, Id,bd = 5 mA
IVDRV = 0.1 − 25 mA
NCV887000
NCV887001
−
0.2 0.35
V
10
15
−
mA
−
−
0.7
V
V
10
10.5
11
10
10.5
11
UVLO
Undervoltage lock−out,
Threshold voltage
Vuvlo
VIN falling
3.0
3.1
3.2
V
Undervoltage lock−out,
Hysteresis
Vuvlo,hys
VIN rising
50
125 200
mV
SHORT CIRCUIT PROTECTION
Startup blanking period
Hiccup−mode period
Short circuit threshold voltage
Short circuit delay
THERMAL SHUTDOWN
%tscp,dly
%thcp,dly
%Vscp
tscp
From start of soft−start, Percent of tss
From shutdown to start of soft−start,
Percent of tss
VFB as percent of Vref
From VFB < Vscp to stop switching
100 120 150
%
65
80
95
%
60
67
75
%
−
35
100
ns
Thermal shutdown threshold
Thermal shutdown hysteresis
Thermal shutdown delay
Tsd
Tsd,hys
tsd,dly
TJ rising
TJ falling
From TJ > Tsd to stop switching
160 170 180
°C
10
15
20
°C
−
−
100
ns
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