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Texas Instruments LM2596T-ADJ/LB05 — Power Management (PMIC / Gate Driver)

LM2596T-ADJ/LB05 SIMPLE SWITCHER Buck Regulator, 3A, 150kHz

MPNLM2596T-ADJ/LB05
Obsolete

Texas Instruments SIMPLE SWITCHER® series, LM2596T-ADJ/LB05, Step-Down, Buck, Adjustable, 1 Output, 3A, 150kHz, Through Hole, TO-220-5 Formed Leads, -40°C~125°C.

$1.0000Ref. price · indicative, final on quote
Texas Instruments LM2596T-ADJ/LB05 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2596T-ADJ/LB05 specifications
ParameterValue
SeriesSIMPLE SWITCHER®
Output typeAdjustable
MountingThrough Hole
Voltage - input4.5V
Voltage - output37V
Voltage - output (Min (Fixed))1.2V
Output current3A
Frequency150kHz
I/O channels1
Operating temperature-40°C~125°C(TJ)
PackageTube
FunctionStep-Down
TopologyBuck
CaseTO-220-5 Formed Leads
Output configurationPositive
Synchronous rectifierNo

Product details

3 A output, 150 kHz buck — the workhorse regulator that went EOL

The LM2596T-ADJ/LB05: Switching at 150 kHz, it uses an external diode and inductor — no synchronous rectifier — keeping the BOM simple but limiting efficiency at very low output voltages.

What the 150 kHz switching frequency means for your power stage

At 150 kHz, the inductor and output capacitor values are larger than those for a higher-frequency regulator.

Obsolete — no official successor on record

No direct replacement order code is published by TI.

TO-220-5 formed leads — through-hole for prototyping and repair

The TO-220-5 formed-leads package is a through-hole footprint, common in bench power supplies, evaluation boards, and rework scenarios. The tab is the output pin; the five leads are staggered for clearance.

Frequently asked questions

What is the current output of LM2596T-ADJ/LB05?

The LM2596T-ADJ/LB05 is rated for 3 A continuous output current. That 3 A is the practical load ceiling before the thermal limit in the TO-220-5 package becomes the binding constraint.

What is the closest pin-compatible alternative for LM2596T-ADJ/LB05?

Texas Instruments has not published a direct pin-compatible replacement for the LM2596T-ADJ/LB05. The LM2596HV series offers a higher input voltage rating but shares the same footprint and pinout — verify the HV variant's availability before committing.