NS LM1117IMP-1.8/NOPB

Mfr. Part

LM1117IMP-1.8/NOPB

Manufacturer

Texas Instruments (Luminary Micro/TI). Y-IC is a quality distributor of Texas Instruments. We deliver genuine TI parts fast and support you with expert service and dependable logistics.

Detailed Description

LM1117IMP-1.8/NOPB is a fixed 1.8 V, low-dropout (LDO) linear regulator rated up to 800 mA. It comes in a compact SOT-223 package for surface-mount assembly. Dropout is about 1.2 V at full load, making it ideal for stepping 3.3 V rails down to 1.8 V. The device includes internal current limit and thermal shutdown for protection. Lead-free NOPB finish.

Key Features

Fixed 1.8 V output

Up to 800 mA output current

Low dropout around 1.2 V at 800 mA

Stable operation with proper input and output capacitors (typically 10 µF)

Internal current limiting and thermal shutdown

Wide input voltage capability up to 15 V

Simple, two-capacitor design

SOT-223 package with large thermal pad for better heat spreading

Lead-free NOPB plating

Key Advantages

Easy drop-in power rail for 1.8 V logic, MCUs, FPGAs, sensors

Proven, widely used LM1117 family reduces design risk

Cost-effective versus more complex regulators

Robust protection features improve reliability in harsh conditions

Simple layout and BoM keep development quick and maintenance minimal

Packaging

Type SOT-223 surface-mount, TI package code IMP, case reference 585

Material Molded epoxy encapsulation with copper leadframe, matte tin plating, RoHS compliant and Pb-free NOPB

Size Approx 6.7 mm x 3.5 mm x 1.8 mm body, low profile for compact boards

Pin configuration Pin 1 GND, Pin 2 VOUT, Pin 3 VIN, Tab is tied to VOUT (thermal pad)

Thermal characteristics Typical SOT-223 thermal resistance RθJA about 80–100 °C/W depending on PCB copper area and airflow. RθJC about 15–20 °C/W typical for SOT-223. Includes thermal shutdown.

Electrical properties Input up to 15 V, fixed 1.8 V output, 800 mA max load, typical dropout ~1.2 V at 800 mA, line regulation ~0.1 percent/V, load regulation ~0.2 percent, quiescent current typically a few mA. Requires low-ESR output capacitor around 10 µF for stability.

Lifecycle

Status Active and widely available. Not nearing discontinuation based on current industry availability.

Equivalent or alternative models (verify pinout and stability requirements before substitution)

- Texas Instruments TLV1117-18 (similar family and functionality)

- STMicroelectronics LD1117-1.8

- onsemi NCP1117LP-1.8

- Diodes Incorporated AP1117-1.8 and AZ1117-1.8

- Analog Devices LT1117-1.8

- Advanced Monolithic Systems AMS1117-1.8 (popular second-source, check capacitor ESR guidance)

Notes Alternatives may differ in dropout, output accuracy, stability with different capacitor types, thermal performance, and protections. If you need a verified drop-in or enhanced-spec replacement, contact our sales team via the Y-IC website for detailed cross-reference support.

Key Application Areas

1.8 V rails for microcontrollers, DSPs, FPGAs, ASICs, memory, sensors

Post-regulation after DC/DC converters for cleaner 1.8 V supplies

Consumer electronics, IoT nodes, routers, access points

Industrial control, test and measurement, communication modules

General-purpose linear regulation where simplicity and reliability matter

Datasheet

Y-IC hosts the most authoritative datasheet for LM1117IMP-1.8/NOPB on our product page. Download it now to get precise electrical specs, thermal data, recommended capacitors, and layout guidance.

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