STEF4S Datasheet, PDF (6/22 Pages) STMicroelectronics – Electronic fuse for 3.3 V and 5 V lines

Electrical characteristics
4
Electrical characteristics
STEF4S
Unless otherwise specified, typical values are referred to V_IN = 5 V for V_CP = V_IN and
V_IN = 3.3 V for V_CP = GND,C_IN = C_OUT = 22 µF, T = 25 ºC, min. and max. values are referred
to T = - 40 ºC to 85 ºC.
Table 5. STEF4S electrical characteristic
Symbol
Parameter
Test conditions
V_IN
V_Clamp
V_UVLO
V_Hyst
V_Clamp
V_UVLO
V_Hyst
Operating input voltage
Under/overvoltage protection, 3.3 V mode
Output clamping voltage
Under voltage lockout
V_IN = 10 V, V_CP = GND
V_CP = GND,
Turn-on, voltage going up
UVLO hysteresis
V_CP = GND
Under/overvoltage protection, 5 V mode
Output clamping voltage
Under voltage lockout
V_IN = 10 V, V_CP = V_IN
V_CP = V_IN,
Turn-on, voltage going up
UVLO hysteresis
V_CP = V_IN
Power MOSFET
R_DS(on)
ON-resistance
R_DS(on) = (V_IN-V_OUT)/I_OUT
T_j = 85 °C⁽¹⁾
Current limit
I_OL
I_Lim
I_Short
T_ss
V_EN-L
V_EN-H
V_CP-L
V_CP-H
Protection trip current
Overload current limit
Short-circuit current limit
V_OUT = 0 V
Soft-start circuit
Output voltage ramp time
From V_IN= V_UVLO to V_OUT = 90 %,
no C_SS
From V_IN = V_UVLO to V_OUT = 90 %,
C_SS = 100 nF
Enable pin thresholds
Enable pin switch-off voltage Output disabled
Enable pin switch-on voltage Output enabled
V_CP pin thresholds
3.3 V mode selection threshold 3.3 V mode enabled
5 V mode selection threshold 5 V mode enabled
Total device
Min.
3.6
2.2
50
5.4
3.4
60
5
16
2
2
Typ. Max. Unit
10 V
3.8 4.0 V
2.3 2.4 V
90 130 mV
5.7 6.0 V
3.6 3.8 V
105 150 mV
40
mΩ
70
5
A
7
9
A
3
A
0.6
ms
23 30
0.4 V
V
0.4 V
V
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DocID025259 Rev 2