Datasheet

LM2931XX, LM2931AXX33, LM2931AXX50 Electrical characteristics
Doc ID 6740 Rev 20 9/21
Refer to the application circuit Figure 4 with R
1
= 27 KΩ and R
2
= 40.5 kΩ, T
J
= 25 °C,
C
I
= 0.1 µF, C
O
= 100 µF, V
I
= 14 V, I
O
= 10 mA, V
INH
= 0 V, unless otherwise specified.
Table 6. Electrical characteristics of LM2931xx
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
I
Maximum operating input
voltage
I
O
= 10 mA, T
J
= -40 to 125°C 26 V
V
REF
Reference voltage
(1)
1.14 1.2 1.26 V
V
REF
Reference voltage
(1)
I
O
= 100 mA, T
J
= -40 to 125°C 1.08 1.2 1.32 V
ΔV
O
Line regulation V
I
= 3.6 to 26 V 0.6 4.5 mV
ΔV
O
Load regulation I
O
= 5 to 100 mA 9 30 mV
V
d
Dropout voltage
(1) (2)
I
O
= 10 mA 90 200
mV
I
O
= 100 mA 250 600
I
d
Quiescent current
ON MODE
I
O
= 100 mA 2.5 30 mA
OFF MODE V
INH
= 2.5 V, R
LOAD
= 300 Ω 0.3 1 mA
I
SC
Short circuit current 100 300 mA
SVR Supply voltage rejection
I
O
= 100 mA, V
I
= 14 ± 2 V
f = 120 Hz, T
J
= -40 to 125°C
55 80 dB
V
IL
Control input voltage low T
J
= -40 to 125°C 2 1.2 V
V
IH
Control input voltage high T
J
= -40 to 125°C 3.25 2 V
I
INH
Inhibit input current V
INH
= 2.5 V 22 50 µA
V
I
Transient input voltage R
LOAD
= 300 Ω, τ < 100ms 60 70 V
V
I
Reverse polarity input
voltage
V
O
= ± 0.3 V, R
LOAD
= 300 Ω -15 -50 V
V
I
Reverse polarity input
voltage transient
R
LOAD
= 300 Ω, τ < 100ms -50 V
eN Output noise voltage B = 10 Hz to 100 kHz 330 µV
RMS
1. Reference voltage is measured from V
OUT
to ADJ pin.
2. V
d
measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V.