Product Summary

The LM338K is a 5-Amp Adjustable Regulator. It is capable of supplying in excess of 5A over a 1.2V to 32V output range. Besides replacing fixed regulators or discrete designs, the LM338K is useful in a wide variety of other applications. The applicatios of the LM338K are Adjustable power supplies, Constant current regulators, Battery chargers. It is supplied in a standard 3-lead transistor package.

Parametrics

LM338K absolute maximum ratings: (1)Power Dissipation:Internally limited; (2)Input/Output Voltage Differential:+40V, -0.3V; (3)Storage Temperature:-65℃ to +150℃; (4)Lead Temperature: Metal Package (Soldering, 10 seconds):300℃, Plastic Package (Soldering, 4 seconds):260℃; (5)ESD Tolerance:TBD.

Features

LM338K features: (1)Guaranteed 7A peak output current; (2)Guaranteed 5A output current; (3)Adjustable output down to 1.2V; (4)Guaranteed thermal regulation; (5)Current limit constant with temperature; (6)P+ Product Enhancement tested; (7)Output is short-circuit protected.

Diagrams

LM338K circuit diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM338K
LM338K
STMicroelectronics
Linear Regulators - Standard 1.2-32V Adj Positive
Data Sheet
0-1: $5.69
1-10: $4.70
10-100: $4.21
100-250: $3.88
LM338K/STEEL
LM338K/STEEL

IC REG LDO ADJ 5A TO-3
Data Sheet
0-1: $30.41
1-10: $28.44
10-25: $26.30
25-100: $24.66
100-250: $23.02
250-500: $21.87
500-1000: $21.04
1000-2500: $20.39
2500-5000: $19.73
LM338KSTEEL/NOPB
LM338KSTEEL/NOPB
National Semiconductor (TI)
Linear Regulators - Standard
Data Sheet
0-1: $31.24
1-25: $27.29
25-100: $25.48
100-250: $23.84
LM338KSTEEL
LM338KSTEEL
National Semiconductor (TI)
Linear Regulators - Standard
Data Sheet
0-50: $26.30
50-100: $24.66
100-250: $23.02
LM338K STEEL/NOPB
LM338K STEEL/NOPB
National Semiconductor (TI)
Linear Regulators - Standard
Data Sheet
Negotiable 
LM338K STEEL
LM338K STEEL
National Semiconductor (TI)
Linear Regulators - Standard
Data Sheet
Negotiable