NCP348, NCP348AE
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (Min/Max limits values (−40°C < T
A
< +85°C) and V
in
= +5.0 V. Typical values are T
A
= +25°C,
unless otherwise noted.)
Characteristic Symbol Conditions Min Typ Max Unit
Input Voltage Range V
in
− 1.2 − 28 V
Undervoltage Lockout Threshold (Note 4) UVLO − 3.0 3.25 3.5 V
Undervoltage Lockout Hysteresis UVLO
hyst
− 20 50 100 mV
Overvoltage Lockout Threshold (Note 4)
NCP348MTT
NCP348AEMTT
OVLO V
in
rises up OVLO threshold
6.0
5.7
6.4
6.02
6.8
6.4
V
Overvoltage Lockout Hysteresis
NCP348MTT
NCP348AEMTT
OVLO
hyst
−
50
30
100
60
150
90
mV
V
in
versus V
out
Resistance R
DS(on)
V
in
= 5.0 V, EN = GND,
Load connected to V
out
− 65 120 mW
Supply Quiescent Current Idd No load. EN = 5.0 V − 90 150 mA
No load. EN = Gnd − 170 250 mA
UVLO Supply Current Idd
uvlo
V
IN
= 2.9 V − 70 100 mA
FLAG Output Low Voltage Vol
flag
1.2 V < V
IN
< UVLO
Sink 50 mA on/FLAG pin
− 20 400 mV
V
IN
> OVLO
Sink 1.0 mA on FLAG pin
− − 400 mV
FLAG Leakage Current FLAG
leak
FLAG level = 5.0 V − 1.0 − nA
EN Voltage High
Vih − 1.2 − − V
EN Voltage Low
Vol − − − 0.4 V
EN Leakage Current
EN
leak
EN = 5.0 V or GND − 1.0 − nA
TIMINGS
Startup Delay ton From V
in
: (0 to (OVLO − 300 mV)
< V
in
< OVLO) to V
out
= 0.3 V
Rise time<4ms (See Figures 3 & 7)
30 55 70 ms
FLAG Going Up Delay tstart From V
out
= 0.3 V to FLAG = 1.2 V
(See Figures 3 & 9)
30 50 70 ms
Output Turn Off Time toff From V
in
> OVLO to V
out
< = 0.3 V
(See Figures 4 & 8)
V
in
increasing from 5.0 V to 8.0 V at
3.0 V/ms, Rload connected on V
out
− 1.5 5.0 ms
Alert Delay tstop From V
in
> OVLO to FLAG < = 0.4 V
(See Figures 4 & 10)
V
in
increasing from 5.0 V to 8.0 V at
3.0 V/ms, Rload connected on V
out
− 1.0 − ms
Disable Time tdis From EN > = 1.2 V to V
out
< 0.3 V
Rload = 5.0 W
(See Figures 5 & 12)
− 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.
