IC POS VOLT REG 12V 1.5A TO220-3

UA7812CKC

Manufacturer Part NumberUA7812CKC
DescriptionIC POS VOLT REG 12V 1.5A TO220-3
ManufacturerTexas Instruments
UA7812CKC datasheet
 


Specifications of UA7812CKC

Regulator TopologyPositive FixedVoltage - Output12V
Voltage - Input14.5 ~ 30 VVoltage - Dropout (typical)2V @ 1A
Number Of Regulators1Current - Output1.5A (Max)
Operating Temperature0°C ~ 125°CMounting TypeThrough Hole
Package / CaseTO-220-3 (Straight Leads)PolarityPositive
Number Of Outputs1Output TypeFixed
Output Voltage12 VOutput Current1.5 A
Line Regulation240 mVLoad Regulation240 mV
Dropout Voltage (max)2 VInput Voltage Max25 V
Maximum Operating Temperature+ 125 CMinimum Operating Temperature0 C
Mounting StyleThrough HoleLead Free Status / RoHS StatusLead free / RoHS Compliant
Current - Limit (min)-Other names296-11111-5
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20-V Input
0.33 F
−20-V Input
Operation With a Load Common to a Voltage of Opposite Polarity
In many cases, a regulator powers a load that is not connected to ground but, instead, is connected to a voltage
source of opposite polarity (e.g., operational amplifiers, level-shifting circuits, etc.). In these cases, a clamp diode
should be connected to the regulator output as shown in
reversals during startup and short-circuit operation.
+V
Figure 6. Output Polarity-Reversal-Protection Circuit
Reverse-Bias Protection
Occasionally, the input voltage to the regulator can collapse faster than the output voltage. This can occur, for
example, when the input supply is crowbarred during an output overvoltage condition. If the output voltage is
greater than approximately 7 V, the emitter-base junction of the series-pass element (internal or external) could
break down and be damaged. To prevent this, a diode shunt can be used as shown in
Copyright © 1976–2009, Texas Instruments Incorporated
1N4001
A7815C
0.1 F
0.1 F
1 F
2 F
A7915C
1N4001
Figure 5. Regulated Dual Supply
Figure
6. This protects the regulator from output polarity
A78xx
I
1N4001
or
Equivalent
V
A78xx
I
Figure 7. Reverse-Bias-Protection Circuit
A7800 SERIES
SLVS056M – MAY 1976 – REVISED JANUARY 2009
V
= 15 V
O
1N4001
1N4001
V
= −15 V
O
+V
O
−V
O
Figure
7.
+V
O
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