LM338T/NOPB Power Management ICs - PMIC by Texas Instruments

IC V REG LINEAR ADJ

Semiconductors - ICs
> Power Management ICs - PMIC
> Voltage Regulators
> Linear Voltage Regulators
Status: Unknown
Series: LM138
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock
The LM138 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 5 A over a 1.2-V to 32-V output range. They are exceptionally easy to use and require only 2 resistors to set the output voltage. Careful circuit design has resulted in outstanding load and line regulation, comparable to many commercial power supplies. The LM138 family is supplied in a standard 3-lead transistor package. A unique feature of the LM138 family is timedependent current limiting. The current limit circuitry allows peak currents of up to 12 A to be drawn from the regulator for short periods of time. This allows the LM138 to be used with heavy transient loads and speeds start-up under full-load conditions. Under sustained loading conditions, the current limit decreases to a safe value protecting the regulator. Also included on the chip are thermal overload protection and safe area protection for the power transistor. Overload protection remains functional even if the adjustment (ADJ) pin is accidentally disconnected. Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed. An output capacitor can be added to improve transient response, while bypassing the adjustment pin increases the ripple rejection of the regulator. Besides replacing fixed regulators or discrete designs, the LM138 is useful in a wide variety of other applications. Because the regulator is floating and receives only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input to output differential is not exceeded; do not short-circuit output to ground. The part numbers in the LM138 series which have a K suffix are packaged in a standard steel TO-CAN package, while those with a T suffix are packaged in a TO-220 plastic package. The LM138 is rated for TJ = –55°C to 150°C, and the LM338 is rated for TJ = 0°C to 125°C.
Distributor Price Stock
Logo for Farnell Farnell US$2.90
No stock
Buy Now
Logo for Texas Instruments Texas Instruments US$1.76
40,402
Buy Now
View Full Pricing & Stock Comparison

Specifications

Fixed Output Voltage Nom. -
Adjustable Output Voltage Min 1.2V
Adjustable Output Voltage Max 37V
Input Voltage Min 4.2V
Input Voltage Max 40V
Product Range LM138
Output Current 5A
Output Type Adjustable
Linear Regulator Case Style TO-220
No. of Pins 3Pins
Operating Temperature Min 0°C
Operating Temperature Max 125°C
Automotive Qualification Standard -
MSL -
SVHC No SVHC (27-Jun-2018)
No. of Outputs 1Outputs
Operating Temperature Range 0°C to +125°C
Output Voltage Adjustable Range 1.2V to 32V
Output Voltage Max 37V
Output Voltage Min 1.2V
Primary Input Voltage 35V
Supply Voltage Max 40V
Supply Voltage Min 3V
Termination Type Through Hole
Voltage Regulator Type 3-Terminal Adjustable Positive

Alternative Descriptions

5-A, 40-V, low-IQ, adjustable linear voltage regulator | Texas Instruments
IC: voltage regulator | Transfer Multisort Elektronik
IC, V REG, LINEAR, ADJ | Farnell
Standard Regulator Pos 1.2V to 32V 5A 3-Pin(3+Tab) TO-220 Rail | Avnet America
Ic, V Reg, Linear, Adj | Newark Electronics
Featured content from Future

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LM338T/NOPB?

Additional datasheets, footprints and schematics for LM338T/NOPB are listed on our Part Details page. You can also find images and similar parts to LM338T/NOPB on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LM338T/NOPB on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LM338T/NOPB price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LM338T/NOPB fall under?

The LM338T/NOPB is listed under Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators.

Can I view similar or alternative parts?

You can view similar parts to LM338T/NOPB when available in the Voltage Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the LM338T/NOPB you can contact the distributor directly for product support, shipping queries etc.

Is the LM338T/NOPB RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for LM338T/NOPB have stock available?

Authorised distributors including Texas Instruments have stock available or on a lead time for LM338T/NOPB.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for LM338T/NOPB often in real-time on the comparison pages.

What if I can't find stock of LM338T/NOPB?

You can fill out our help required form which you can use to request a quote for LM338T/NOPB from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay