Specifications
| Type | Description |
|---|---|
| Part Number | LM1117MPX-3.3-NOPB |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package / Case | DCY (SOT-223, 4), 6.50 mm × 3.50 mm nominal body |
| Fixed Output Voltage | 3.3 V nominal; LM1117-3.3 fixed-output version |
| Output Current | 800 mA rated output current |
| Dropout Voltage | 1.2 V at IOUT = 800 mA |
| Output Voltage Accuracy | ±1% band-gap reference output voltage accuracy |
| Required Output Capacitor | 10 µF minimum tantalum capacitor required at output for transient response and stability |
| Available Fixed Output Voltages | 1.8 V, 2.5 V, 3.3 V, 5 V fixed-output device options |
| Adjustable Output Voltage Range | 1.25 V to 13.8 V using two external resistors |
| Protection Features | Current limiting and thermal shutdown integrated protection functions |
| Recommended Operating Temperature | 0°C to 125°C LM1117 junction temperature range |
| Absolute Maximum Input Voltage | 20 V, VIN to GND |
| Recommended Maximum Input Voltage | 15 V, VIN to GND |
| Junction Temperature | 150°C maximum absolute maximum rating, TJ |
| Storage Temperature | -65°C to 150°C, Tstg |
| ESD Rating | ±2000 V human-body model, ANSI/ESDA/JEDEC JS-001 |
| SOT-223 Junction-to-Ambient Thermal Resistance | 61.6°C/W, DCY package RθJA |
| SOT-223 Junction-to-Case Top Thermal Resistance | 42.5°C/W, DCY package RθJC(top) |
| SOT-223 Junction-to-Board Thermal Resistance | 10.4°C/W, DCY package RθJB |
| SOT-223 Junction-to-Top Characterization Parameter | 2.9°C/W, DCY package ψJT |
| SOT-223 Junction-to-Board Characterization Parameter | 10.3°C/W, DCY package ψJB |
| Output Voltage | 3.267 V min, 3.3 V typ, 3.333 V max; LM1117-3.3, IOUT = 10 mA, VIN = 5 V, TJ = 25°C |
| Output Voltage Over Temperature | 3.235 V min, 3.365 V max; LM1117-3.3, 0 ≤ IOUT ≤ 800 mA, 4.75 V ≤ VIN ≤ 10 V, 0°C to 125°C |
| Line Regulation | 1 mV typ, 6 mV max; LM1117-3.3, IOUT = 0 mA, 4.75 V ≤ VIN ≤ 15 V, TJ = 25°C and 0°C to 125°C |
| Load Regulation | 1 mV typ, 10 mV max; LM1117-3.3, VIN = 4.75 V, 0 ≤ IOUT ≤ 800 mA, TJ = 25°C and 0°C to 125°C |
| Dropout Voltage at 100 mA | 1.1 V typ, 1.2 V max; IOUT = 100 mA, TJ = 25°C and 0°C to 125°C |
| Dropout Voltage at 500 mA | 1.15 V typ, 1.25 V max; IOUT = 500 mA, TJ = 25°C and 0°C to 125°C |
| Dropout Voltage at 800 mA | 1.2 V typ, 1.3 V max; IOUT = 800 mA, TJ = 25°C and 0°C to 125°C |
| Current Limit | 800 mA min, 1200 mA typ, 1500 mA max; VIN - VOUT = 5 V, TJ = 25°C |
| Quiescent Current | 5 mA typ, 10 mA max; LM1117-3.3, VIN ≤ 15 V, TJ = 25°C and 0°C to 125°C |
| Thermal Regulation | 0.01 %/W typ, 0.1 %/W max; TA = 25°C, 30-ms pulse |
| Ripple Regulation | 75 dB typ, 60 dB min; fRIPPLE = 120 Hz, VRIPPLE = 1 VPP, VIN - VOUT = 3 V, TJ = 25°C and 0°C to 125°C |
| Temperature Stability | 0.5%, LM1117 electrical characteristic |
| Long-Term Stability | 0.3%; TA = 125°C, 1000 hours |
| RMS Output Noise | 0.003% of VOUT; 10 Hz ≤ f ≤ 10 kHz |
| Pin 1 Function | GND; fixed-output option, SOT-223 package |
| Pin 3 Function | VIN; SOT-223 package input voltage pin |
| Pin 2 and Tab Function | VOUT; SOT-223 package output voltage pin |
| Datasheet Status | request_only |
Product Overview
The LM1117MPX-3.3-NOPB is the Texas Instruments LM1117-3.3 fixed-output version, specified as an 800-mA low-dropout linear regulator for Power_Management designs. It provides a 3.3 V nominal output and is rated for 800 mA output current, with dropout specified at 1.2 V at 800 mA in the device overview and 1.2 V typical, 1.3 V maximum at 800 mA in the electrical characteristics.
This part is supplied in the DCY SOT-223, 4 package with a 6.50 mm × 3.50 mm nominal body. For the fixed-output SOT-223 option, pin 1 is GND, pin 3 is VIN, and pin 2 plus the tab are VOUT, supporting straightforward assembly into fixed 3.3 V regulator layouts.
Electrical limits include 3.267 V minimum, 3.3 V typical, and 3.333 V maximum output at 10 mA with 5 V input and 25°C junction temperature. Across 0 mA to 800 mA, 4.75 V to 10 V input, and 0°C to 125°C, output voltage is specified from 3.235 V to 3.365 V. A 10 µF minimum tantalum output capacitor is required for transient response and stability.
Key Features
- 3.3 V nominal fixed-output LM1117-3.3 regulator
- 800 mA rated output current capability
- 1.2 V dropout specified at 800 mA
- ±1% band-gap reference output voltage accuracy
- 10 µF minimum tantalum output capacitor required
- Current limiting and thermal shutdown protection
- 0°C to 125°C recommended junction temperature range
- 15 V recommended maximum input voltage to ground
- SOT-223 DCY package with VOUT tab connection
- 75 dB typical ripple regulation at 120 Hz
Typical Applications
- Fixed 3.3 V regulated rails
- 800 mA linear regulation
- SOT-223 power management layouts
- VIN to VOUT dropout-limited supplies
- Thermally protected regulator circuits
- Low-noise regulated output rails
- 120 Hz ripple rejection designs
Procurement Notes
When requesting a quote for LM1117MPX-3.3-NOPB, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What output voltage does LM1117MPX-3.3-NOPB provide?
LM1117MPX-3.3-NOPB is the LM1117-3.3 fixed-output version. It provides a 3.3 V nominal output, with 3.267 V minimum, 3.3 V typical, and 3.333 V maximum specified at 10 mA, 5 V input, and 25°C junction temperature.
What output capacitor is required for this regulator?
The extracted datasheet facts specify a 10 µF minimum tantalum capacitor at the output. This capacitor is required for transient response and stability, so it should be included in the output network for LM1117MPX-3.3-NOPB designs.
What are the SOT-223 pin functions for this part?
For the fixed-output SOT-223 package, pin 1 is GND, pin 3 is VIN, and pin 2 plus the tab are VOUT. The package is the DCY SOT-223, 4 case with a 6.50 mm × 3.50 mm nominal body.
What input voltage limits apply to LM1117MPX-3.3-NOPB?
VIN to GND is rated at 20 V as an absolute maximum input voltage. The recommended maximum input voltage is 15 V. Electrical line regulation for the LM1117-3.3 is specified with 4.75 V to 15 V input under the stated test condition.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.