LM340T-12/NOPB National Semiconductor, LM340T-12/NOPB Datasheet - Page 7
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LM340T-12/NOPB
Manufacturer Part Number
LM340T-12/NOPB
Description
IC REGULATOR POSIT 12V TO220-3
Manufacturer
National Semiconductor
Type
Voltage Regulatorr
Specifications of LM340T-12/NOPB
Regulator Topology
Positive Fixed
Voltage - Output
12V
Voltage - Input
14.6 ~ 35 V
Voltage - Dropout (typical)
2V @ 1A
Number Of Regulators
1
Current - Output
1.5A
Current - Limit (min)
2.4A
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Current, Output
1 A
Current, Supply
6 mA
Package Type
TO-220
Regulation, Line
4 mV
Regulation, Load
12 mV
Regulator Type
Positive Voltage Out
Resistance, Thermal, Junction To Case
4 °C/W
Temperature, Operating, Range
0 to +125 °C
Voltage, Dropout
2 V
Voltage, Input
19 V
Voltage, Noise
75 μV
Voltage, Output
12 V
Voltage, Supply, Rejection Ratio
72 dB
Primary Input Voltage
27V
Output Voltage Fixed
12V
No. Of Outputs
1
No. Of Pins
3
Output Current
1A
Operating Temperature Range
0°C To +125°C
Msl
MSL 1 - Unlimited
Current Rating
1A
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM340T-12
*LM340T-12/NOPB
LM340T-12
LM7812
LM7812CT
LM7812T
UA7812
UA7812CT
UA7812CU
*LM340T-12/NOPB
LM340T-12
LM7812
LM7812CT
LM7812T
UA7812
UA7812CT
UA7812CU
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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
www.national.com
mV/˚C
Units
mΩ
mV
mV
mA
mA
µV
dB
V
V
V
A
A