LP2950CDTX-3.3/NOPB

LP2950CDTX-3.3/NOPB is a fixed 3.3V low-dropout regulator (LDO) from TI/National Semiconductor. It provides a regulated 3.3V output from a higher input rail with simple 3-pin packaging. Key points:
- Fixed output: 3.3V
- Typical dropout around 0.5V at modest load; low quiescent current
- Output current typically around 100 mA (some variants support more)
- Protection: current limit and thermal shutdown
- Input must be higher than 3.3V plus dropout; exact max Vin and other specs vary by package and revision—consult the datasheet for specifics
- Packaging: Pb-free (NOPB), CDTX code indicates package type
Common use: supplying a stable 3.3V rail to microcontrollers, sensors, and other ICs in battery-powered or portable electronics. Pinout depends on package; verify with the specific datasheet for LP2950CDTX-3.3/NOPB.

Common equivalents (3.3V fixed LDOs, similar current):
- AMS1117-3.3
- LM1117-3.3
- MCP1700-33 (MCP1700-3302E)
- TLV70033
- MIC5205-3.3
- XC6206P332MR
Note: Dropout and quiescent current differ slightly between parts; verify in-circuit requirements.

LP2950CDTX-3.3/NOPB Features:
- Fixed 3.3 V output regulator
- Output current up to 100 mA
- Low dropout: ≈0.5 V at 100 mA
- Very low quiescent current (typ. ~100 µA)
- Internal current limit and thermal shutdown protection
- Wide input range up to 26 V
- Good line and load regulation with fast transient response
- Requires an output capacitor for stability (typ. ≥10 µF, ESR within spec)
- Pb-free, NOPB package (and rated for -40°C to +125°C)

3 pins. It is a fixed three-terminal low-dropout regulator (3.3 V output). Typical pinout (TO-92 style): Pin 1 = Ground, Pin 2 = Output, Pin 3 = Input. (Package pinouts may vary by variant; consult datasheet for the exact orientation.)

- Manufacturer: Texas Instruments (TI). The LP2950CDTX-3.3/NOPB is a TI part (the LP2950 LDO family originated with National Semiconductor, which TI acquired in 2011).
- What kind of company: TI is a multinational American semiconductor company that designs and manufactures integrated circuits, with a strong focus on analog, mixed-signal, and digital ICs. It is one of the world's largest semiconductor makers.

Common application areas for LP2950CDTX-3.3/NOPB:
- Local 3.3V regulator for microcontrollers, DSPs, memories and other digital ICs
- Power rail for battery-powered portable devices and handheld instruments
- Post-regulation in embedded systems and development boards
- Sensor, analog front-end and op-amp supplies requiring a stable 3.3V
- Consumer electronics, telecom/networking gear, and instrumentation equipment
- Prototyping, retrofits, and space-constrained designs where a simple LDO is preferred

TO-92 (3-pin) plastic package, Pb-free (NOPB).