Texas Instruments LM78M05CDTX/NOPB

LM78M05CDTX/NOPB is the 5 V member of TI's LM78M05 three-terminal positive-regulator family. It accepts up to 35 V, supplies up to 500 mA with appropriate thermal design, and requires no external components for basic regulation.

Internal current limiting, thermal shutdown, and safe-operating-area compensation help protect the device against overloads. Input and output bypass capacitors are recommended when wiring or transient conditions require them.

• Fixed nominal 5 V output.
• Output current up to 500 mA with adequate heat sinking.
• Recommended input range from approximately 6.8 V to 35 V; 7.2 V required to maintain line regulation at 500 mA.
• Internal short-circuit current limiting.
• Internal thermal-overload protection.
• Output-transistor safe-operating-area compensation.
• Three-pin NDP TO-252 package on a 2,500-piece large reel.

TI specifies NDP, a three-pin TO-252 package. The catalog registry maps it to TO-252-3 / DPAK (two leads plus tab) / SC-63. Use the current TI NDP drawing for mechanical dimensions, pin orientation, and land-pattern decisions.

Layout checks

• Confirm the top-view orientation against TI's NDP drawing.
• Connect pin 2 and the tab to ground copper.
• Place bypass capacitors close to the regulator when used.
• Size copper area for the worst-case input-to-output voltage drop and load current.

The local and production package JPGs were visually checked and match byte-for-byte.

The exposed tab is electrically connected to ground, not to the output.

Electrical limits depend on the exact test conditions. Confirm allowable dissipation and junction temperature for the intended PCB.

Match the fixed 5 V output, 500 mA rating, 35 V input capability, input-ground-output pin order, ground-connected tab, TO-252 NDP footprint, thermal performance, operating temperature, and reel format. A similarly named regulator with an output-connected tab or different pin order is not a drop-in substitute.

No internal replacement link is asserted because no exact API-confirmed alternative was established for this run.

Texas Instruments lists LM78M05CDTX/NOPB as active production. The exact orderable uses the NDP three-pin TO-252 package, is supplied on a 2,500-piece large tape-and-reel carrier, operates from -40 degrees C to +125 degrees C, and has marking LM78M05 / CDT. The /NOPB option is listed as RoHS-compliant with a matte-tin lead finish.

Verify the complete LM78M05CDTX/NOPB order code, LM78M05 / CDT marking, NDP body, pin-one orientation, ground-connected tab, 2,500-piece reel label, finish, moisture-sensitivity handling, and lot traceability. The X suffix identifies the reel carrier option rather than a different electrical die.

Before release, verify input transients, dropout and line-regulation headroom, load steps, capacitor placement, short-circuit behavior, PCB copper area, ambient temperature, and junction temperature against the current TI data sheet and NDP package drawing.