LM340T-12 National Semiconductor, LM340T-12 Datasheet - Page 7
![IC, LINEAR VOLT REGULATOR, 12V, TO-220-3](/photos/19/7/190743/3833580_sml.gif)
LM340T-12
Manufacturer Part Number
LM340T-12
Description
IC, LINEAR VOLT REGULATOR, 12V, TO-220-3
Manufacturer
National Semiconductor
Datasheet
1.LM340MP-5.0NOPB.pdf
(17 pages)
Specifications of LM340T-12
Primary Input Voltage
27V
Output Voltage Fixed
12V
Dropout Voltage Vdo
2V
No. Of Outputs
1
No. Of Pins
3
Output Current
1A
Operating Temperature Range
0°C To +125°C
Current Rating
1A
Rohs Compliant
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM340T-12
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LM340T-12/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
V
∆V
∆V
V
I
∆I
V
∆V
V
R
I
I
∆V
Symbol
Q
OS
PK
O
O
N
DO
LM7808C
Electrical Characteristics
0˚C ≤ T
O
Note 6: All characteristics are measured with a 0.22 µF capacitor from input to ground and a 0.1 µF capacitor from output to ground. All characteristics except noise
voltage and ripple rejection ratio are measured using pulse techniques (t
must be taken into account separately.
Q
O
O
I
O
/∆V
/∆T
O
J
≤ +150˚C, V
Output Voltage
Line Regulation
Load Regulation
Output Voltage
Quiescent Current
Quiescent
Current Change
Noise
Ripple Rejection
Dropout Voltage
Output Resistance
Output Short Circuit Current
Peak Output Current
Average Temperature
Coefficient of Output Voltage
Parameter
I
= 14V, I
O
With Line
With Load
= 500 mA, C
T
T
T
11.5V ≤ V
T
11.5V ≤ V
5.0 mA ≤ I
T
f = 120 Hz, I
I
f = 1.0 kHz
T
T
I
O
O
I
J
J
J
J
A
J
J
= 0.33 µF, C
= 1.0A, T
= 5.0 mA
= 25˚C
= 25˚C
= 25˚C
= 25˚C
= 25˚C, V
= 25˚C
= 25˚C, 10 Hz ≤ f ≤ 100 kHz
I
I
O
w
≤ 23V, 5.0 mA ≤ I
≤ 25V
J
≤ 10 ms, duty cycle ≤ 5%). Output voltage changes due to changes in internal temperature
O
≤ 1.0A
I
= 25˚C
= 35V
= 350 mA, T
O
Conditions (Note 6)
= 0.1 µF, unless otherwise specified
7
J
= 25˚C
O
10.5V ≤ V
11.0V ≤ V
5.0 mA ≤ I
250 mA ≤ I
mA
≤ 1.0A, P ≤ 15W
I
I
O
O
≤ 25V
≤ 17V
≤ 1.5A
≤ 750
Min
7.7
7.6
56
LM7808C
0.45
Typ
8.0
6.0
2.0
4.0
4.3
2.0
2.2
0.8
12
52
72
16
Max
160
160
8.3
8.4
8.0
1.0
0.5
80
80
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mV/˚C
Units
mΩ
mV
mV
mA
mA
µV
dB
V
V
V
A
A