NCP374 데이터 시트보기 (PDF) - ON Semiconductor
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NCP374 Datasheet PDF : 11 Pages
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NCP374
ELECTRICAL CHARACTERISTICS Min / Max limits values (−40°C < TA < +85°C) and IN = +5 V (Unless otherwise noted). Typical
values are TA = +25°C
Characteristics
Symbols
Conditions
Min
Typ
Max
Unit
FLAG Output Low Voltage
Volflag
Fault mode
Sink 1 mA on FLAG pin
400
mV
FLAG Leakage Current
DIR Voltage High
FLAGleak
FLAG level = 5.5 V
1
nA
Vih
1.2
V
DIR Voltage Low
Vol
0.4
V
DIR Leakage Current
DIRleak
DIR = 5.5 V
300
nA
EN Voltage High
EN Voltage Low
EN Leakage Current
Vih
Vol
ENleak
EN = 5.5 V
1.2
V
0.4
V
300
nA
Thermal Shutdown temperature
Thermal Shutdown Hysteresis
TIMINGS
TSD
TSDHYST
150
°C
30
°C
Vbus Mode
Start Up Delay
TonVbus
IN >= 2.5 V, from EN = 1.2 to 0.4 to
0.6
1.2
1.8
ms
Vbus >= 0.3 V
Vbus Mode
FLAG going up Delay
Tstartvbus
From IN >= 0.3 V FLAG = 1.2 V,
Vbus Mode
0.6
1.2
1.8
ms
Rearming Delay
tRRD
IN > .2.5 V, Rin = 1 W Vbus Mode,
15
30
45
ms
after fault
Over Current Regulation Time
treg
IN > 2.6, Vbus > 0.3 V Vbus Mode
0.5
1.2
1.8
ms
OCP delay time
Vbus Disable time
tOCP
From I Vbus > Ilim, 1 A/1 ms
5
ms
TVbusDIS
From EN = 0.4 V to 1.2 V, to Vbus <
165
ms
0.3 V. IN = 5 V
Turn off delay
toff
From IN > OVLO toVbus ≤ 0.3 V
Vin increasing from 5V to 8V at
3 V/ms
1.5
5
ms
Charging Mode
Start Up Delay
ton
From Vbus>UVLO to IN=0.3V ,
15
30
45
ms
charging mode
FLAG going up Delay
tstart
From IN > 0.3 V to FLAG = 1.2 V
15
30
45
ms
Turn off delay
toff
From Vbus > OVLO to IN ≤ 0.3 V
Vin increasing from 5 V to 8 V at
3 V/ms
1.5
5
ms
Alert delay
tstop
From Vbus > OVLO to FLAG ≤ 0.4 V
1.5
ms
See Figures 3 and 9
Vin increasing from 5 V to 8 V at
3 V/ms
Disable time
tdis
EN = 1.2 V, From DIR = 0.4 to 1.2 V
2.5
ms
to IN ≤ 0.3 V
NOTE: Electrical parameters are guaranteed by correlation across the full range of temperature.
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