LM7912CT/NOPB National Semiconductor, LM7912CT/NOPB Datasheet - Page 5
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LM7912CT/NOPB
Manufacturer Part Number
LM7912CT/NOPB
Description
IC VOLT REG NEG 12V 1.5A TO220-3
Manufacturer
National Semiconductor
Type
Voltage Regulatorr
Specifications of LM7912CT/NOPB
Regulator Topology
Negative Fixed
Voltage - Output
-12V
Voltage - Input
-19 ~ -35 V
Voltage - Dropout (typical)
1.1V @ 1A
Number Of Regulators
1
Current - Output
1.5A
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Current, Output
1.5 A
Current, Supply
1.5 mA
Package Type
TO-220
Regulation, Line
5 mV
Regulation, Load
15 mV
Regulator Type
Negative Voltage Out
Resistance, Thermal, Junction To Case
3 °C/W
Temperature, Operating, Range
0 to +125 °C
Voltage, Dropout
1.1 V
Voltage, Input
-35 V
Voltage, Noise
300 μV
Voltage, Output
-12 V
Voltage, Supply, Rejection Ratio
70 dB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Other names
*LM7912CT
*LM7912CT/NOPB
LM7912
LM7912CT
UA7912
UA7912CT
UA7912CU
*LM7912CT/NOPB
LM7912
LM7912CT
UA7912
UA7912CT
UA7912CU
Typical Applications
*Improves transient response and ripple rejection. Do not increase beyond 50 µF.
Select R2 as follows:
*
†
*
†
Lamp brightness increase until i
Necessary only if raw supply filter capacitor is more that 2" from LM7905CT
Lamp brightness increases until i
Necessary only if raw supply filter capacitor is more that 2" from LM7905
LM7905CT
LM7912CT
LM7915CT
300
750
1k
I
= i
i
= 5V/R1 (I
Q
( 1 mA) + 5V/R1.
(Continued)
i
can be set as low as 1 µA)
Light Controller Using Silicon Photo Cell
High-Sensitivity Light Controller
Variable Output
5
DS007340-2
DS007340-9
DS007340-8
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