Datasheet
LM2931-N
www.ti.com
SNOSBE5G –MARCH 2000–REVISED APRIL 2013
ELECTRICAL CHARACTERISTICS FOR FIXED 3.3V VERSION (continued)
V
IN
= 14V, I
O
= 10mA, T
J
= 25°C, C
2
= 100μF (unless otherwise specified)
(1)
LM2931-N-3.3
Parameter Conditions Units
Limit
Typ
(2)
Dropout Voltage I
O
= 10mA 0.05 0.2
V
MAX
I
O
= 100mA 0.30 0.6
Maximum Operational Input Voltage 33 26 V
MIN
Maximum Line Transient R
L
= 500Ω, V
O
≤ 5.5V, 70 50 V
MIN
T = 1ms, τ ≤ 100ms
Reverse Polarity Input Voltage, DC V
O
≥ −0.3V, R
L
= 500Ω −30 −15 V
MIN
Reverse Polarity Input Voltage, T = 1ms, τ ≤ 100ms, R
L
= 500Ω −80 −50 V
MIN
Transient
ELECTRICAL CHARACTERISTICS FOR FIXED 5V VERSION
V
IN
= 14V, I
O
= 10mA, T
J
= 25°C, C2 = 100 μF (unless otherwise specified)
(1)
LM2931A-5.0 LM2931-N-5.0
Parameter Conditions Units
Limit Limit
Typ Typ
(2) (2)
Output Voltage 5 5.19 5 5.25 V
MAX
4.81 4.75 V
MIN
6.0V ≤ V
IN
≤ 26V, I
O
= 100mA 5.25 5.5 V
MAX
−40°C ≤ T
J
≤ 125°C 4.75 4.5 V
MIN
Line Regulation 9V ≤ V
IN
≤ 16V 2 10 2 10
mV
MAX
6V ≤ V
IN
≤ 26V 4 30 4 30
Load Regulation 5 mA ≤ I
O
≤ 100mA 14 50 14 50 mV
MAX
Output Impedance 100mA
DC
and 10mA
rms
, 200 200 mΩ
100Hz -10kHz
Quiescent Current I
O
≤ 10mA, 6V ≤ V
IN
≤ 26V 0.4 1.0 0.4 1.0 mA
MAX
−40°C ≤ T
J
≤ 125°C
I
O
= 100mA, V
IN
= 14V, T
J
= 25°C 15 30 15 mA
MAX
Output Noise Voltage 10Hz -100kHz, C
OUT
= 100μF 500 500 μV
rms
Long Term Stability 20 20 mV/1000
hr
Ripple Rejection f
O
= 120 Hz 80 55 80 dB
MIN
Dropout Voltage I
O
= 10mA 0.05 0.2 0.05 0.2
V
MAX
I
O
= 100mA 0.3 0.6 0.3 0.6
Maximum Operational Input 33 26 33 26 V
MIN
Voltage
Maximum Line Transient R
L
= 500Ω, V
O
≤ 5.5V,
70 60 70 50 V
MIN
T = 1ms, τ ≤ 100ms
Reverse Polarity Input Voltage, V
O
≥ −0.3V, R
L
= 500Ω −30 −15 −30 −15 V
MIN
DC
Reverse Polarity Input Voltage, T = 1ms, τ ≤ 100ms, R
L
= 500Ω −80 −50 −80 −50 V
MIN
Transient
(1) See circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.
(2) All limits are specified for T
J
= 25°C (standard type face) or over the full operating junction temperature range of −40°C to +125°C (bold
type face).
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