Datasheet

Electrical characteristics L4940
8/22 DocID2141 Rev 13
Refer to test circuit, V
I
= 14 V, C
I
= 0.1 µF, C
O
= 22 µF, T
J
= 25 °C, unless otherwise
specified.
ΔV
O
/ ΔT Output voltage drift 0.8 mV/°C
SVR Supply voltage rejection f = 120 Hz, I
O
= 1 A 58 66 dB
V
d
Dropout voltage
I
O
= 0.5 A 200 400 mV
I
O
= 1.5 A 500 900 mV
I
sc
Short-circuit current
V
I
= 14 V 2 2.7
A
V
I
= 10.2 V 2.2 2.9
Table 5. L4940#85 electrical characteristics (continued)
Symbol Parameter Test conditions Min. Typ. Max. Unit
Table 6. L4940#12 electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage I
O
= 500 mA 11.75 12 12.25 V
V
O
Output voltage I
O
= 5 mA to 1.5 A, V
I
= 13.8 to 15 V 11.5 12 12.5 V
V
I
Maximum input voltage I
O
= 5 mA 17 V
ΔV
O
Line regulation V
I
= 13 to 17 V, I
O
= 5 mA 3 7 mV
ΔV
O
Load regulation
I
O
= 5 mA to 1.5 A 15 35 mV
I
O
= 0.5 A to 1 A 10 25 mV
I
q
Quiescent current
I
O
= 5 mA 4 8 mA
I
O
= 1.5 A, V
I
= 13.8 V 30 50 mA
ΔI
q
Quiescent current change
I
O
= 5 mA 1.5 mA
I
O
= 1.5 A, V
I
= 13.8 to 16 V 10 mA
ΔV
O
/ΔT Output voltage drift 1.2 mV/°C
SVR Supply voltage rejection f = 120 Hz, I
O
= 1 A 55 61 dB
V
d
Dropout voltage
I
O
= 0.5 A 200 400 mV
I
O
= 1.5 A 500 900 mV
I
sc
Short-circuit current V
I
= 14 V 2 2.7 A
Z
O
Output impedance f = 120 Hz, I
O
= 0.5 A 40 mΩ