NCP348 데이터 시트보기 (PDF) - ON Semiconductor
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NCP348 Datasheet PDF : 13 Pages
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NCP348, NCP348AE
ELECTRICAL CHARACTERISTICS (Min/Max limits values (−40°C < TA < +85°C) and Vin = +5.0 V. Typical values are TA = +25°C,
unless otherwise noted.)
Characteristic
Symbol
Conditions
Min
Typ Max Unit
Input Voltage Range
Vin
−
1.2
−
28
V
Undervoltage Lockout Threshold (Note 4)
UVLO
−
3.0
3.25 3.5
V
Undervoltage Lockout Hysteresis
UVLOhyst
Overvoltage Lockout Threshold (Note 4)
NCP348MTT
NCP348AEMTT
OVLO
−
Vin rises up OVLO threshold
20
50
100 mV
V
6.0
6.4
6.8
5.7
6.02 6.4
Overvoltage Lockout Hysteresis
OVLOhyst
−
NCP348MTT
NCP348AEMTT
mV
50
100 150
30
60
90
Vin versus Vout Resistance
Supply Quiescent Current
RDS(on)
Idd
Vin = 5.0 V, EN = GND,
Load connected to Vout
No load. EN = 5.0 V
−
65
120 mW
−
90
150
mA
No load. EN = Gnd
−
170
250
mA
UVLO Supply Current
FLAG Output Low Voltage
Idduvlo
Volflag
VIN = 2.9 V
1.2 V < VIN < UVLO
Sink 50 mA on/FLAG pin
−
70
100
mA
−
20
400 mV
VIN > OVLO
Sink 1.0 mA on FLAG pin
−
−
400 mV
FLAG Leakage Current
EN Voltage High
FLAGleak
Vih
FLAG level = 5.0 V
−
−
1.0
−
nA
1.2
−
−
V
EN Voltage Low
Vol
−
−
−
0.4
V
EN Leakage Current
TIMINGS
Startup Delay
ENleak
EN = 5.0 V or GND
−
1.0
−
nA
ton
From Vin: (0 to (OVLO − 300 mV)
30
55
70
ms
< Vin < OVLO) to Vout = 0.3 V
Rise time<4ms (See Figures 3 & 7)
FLAG Going Up Delay
tstart
From Vout = 0.3 V to FLAG = 1.2 V
30
(See Figures 3 & 9)
50
70
ms
Output Turn Off Time
Alert Delay
Disable Time
toff
From Vin > OVLO to Vout < = 0.3 V
−
(See Figures 4 & 8)
Vin increasing from 5.0 V to 8.0 V at
3.0 V/ms, Rload connected on Vout
tstop
From Vin > OVLO to FLAG < = 0.4 V
−
(See Figures 4 & 10)
Vin increasing from 5.0 V to 8.0 V at
3.0 V/ms, Rload connected on Vout
tdis
From EN > = 1.2 V to Vout < 0.3 V
−
Rload = 5.0 W
(See Figures 5 & 12)
1.5
5.0
ms
1.0
−
ms
1.0
5.0
ms
NOTE: Electrical parameters are guaranteed by correlation across the full range of temperature.
4. Additional UVLO and OVLO thresholds ranging from UVLO and from OVLO can be manufactured. Contact your ON Semiconductor
representative for availability.
http://onsemi.com
4
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