NCP391
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS − NCP391FCCADT2G (Min/Max limits values (−40°C < T
A
< +85°C) and V
in
= +4.2 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 5) UVLO V
in
falls below UVLO threshold
from 4.2 V to 2.7 V 2.8 2.95 3.1
V
Undervoltage Lockout Hysteresis UVLO
hyst
V
in
rises above UVLO + UVLO
hyst
30 60 90 mV
Overvoltage Lockout Threshold (Note 5) OVLO V
in
rises above OVLO threshold
4.8 4.95 5.1
V
Overvoltage Lockout Hysteresis OVLO
hyst
V
in
falls below OVLO + OVLO
hyst
50 100 150
mV
V
in
versus V
out
Resistance R
DS(on)
V
in
= 4.2 V, EN = GND,
Load connected to V
out
− 120 200 mW
Supply Quiescent Current Idd No load. EN = 4.2 V − 70 150 mA
No load. EN = Gnd − 90 170 mA
UVLO Supply Current Idd
uvlo
V
IN
= 2.7 V − 60 − mA
MOSFET Leakage I
vdss
V
IN
= 28 V − 10 500 nA
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 = 4.2 V − 1.0 − nA
EN Voltage High
Vih − 1.2 − 4.95 V
EN Voltage Low
Vol − − − 0.4 V
EN Leakage Current
EN
leak
EN = 4.2 V or GND − 1.0 − nA
Thermal Shutdown Temperature t
SD
− − 150 − °C
Thermal Shutdown Hysteresis t
SDhyst
− − 15 − °C
TIMINGS
Startup Delay ton From V
in
> UVLO to V
out
= 0.3 V
(See Figures 3 & 7)
6.0 10 14 ms
FLAG Going Up Delay tstart From V
out
= 0.3 V to FLAG = 1.2 V
(See Figures 3 & 9)
6.0 10 14 ms
Output Turn Off Time toff From V
in
> OVLO to V
out
< = 0.3 V
(See Figures 4 & 8)
V
in
increasing from 4.2 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 4.2 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.
5. Additional UVLO and OVLO thresholds ranging from UVLO and from OVLO can be manufactured. Contact your ON Semiconductor
representative for availability.
