Texas Instruments LP3999ITL-1.8/NOPB

Mfr. Part

LP3999ITL-1.8/NOPB

Manufacturer

Texas Instruments (Luminary Micro legacy)

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Detailed Description

Single-channel positive low-dropout linear regulator with a fixed 1.8 V output and up to 150 mA load current. Ultra-small 5-ball DSBGA chip-scale package measuring 1.41 mm x 1.08 mm for dense designs. Wide input voltage headroom up to 6 V. Very low dropout of 100 mV at 150 mA. Enable control for simple power sequencing. Solid noise rejection with about 60 dB PSRR from 1 kHz to 10 kHz. Built-in protection for over-temperature and short circuit. Surface-mount and tape-and-reel for automated assembly. Category Integrated Circuits ICs. Subclass PMIC LDO Voltage Regulators.

Key Features

Fixed 1.8 V output

150 mA continuous output current

Low dropout 0.1 V at 150 mA

Positive regulator single channel

Enable pin for on off control and sequencing

PSRR about 60 dB from 1 kHz to 10 kHz

Low quiescent current around 150 µA typical with supply current up to about 200 µA

Operating temperature range from -40 °C to +85 °C

Surface-mount footprint and tape-and-reel packing

RoHS3 compliant and lead-free

Supplier device package 5-DSBGA 1.41 x 1.08 mm

Base product number LP3999

Key Advantages

Ultra-compact 5-ball chip-scale package saves PCB area in wearables and IoT nodes

Low dropout reduces wasted power and heat and helps extend battery life

Good PSRR improves rail cleanliness for RF analog and high-speed digital blocks

Simple design with fixed 1.8 V no external feedback network required

Enable pin supports low-power standby and staged power-up

Robust protections improve system reliability

Wide input headroom up to 6 V fits common battery and 5 V rails

Packaging

Type 5-ball DSBGA wafer level chip-scale BGA

Size 1.41 mm x 1.08 mm ultra-thin profile

Material silicon die with lead-free SnAgCu solder balls compliant with RoHS3

Mounting surface-mount compatible with standard reflow processes

Shipment tape and reel TR for automated pick-and-place

Pin count and typical functions 5 balls often include VIN VOUT GND EN BYPASS refer to the datasheet for the exact ball map

Thermal characteristics rated for -40 °C to +85 °C ambient follow TI layout and copper area guidelines for best thermal dissipation

Electrical highlights fixed 1.8 V output up to 150 mA max input 6 V dropout about 0.1 V at 150 mA PSRR near 60 dB enable control and built-in over-temperature and short-circuit protection

Lifecycle

Status active production and broadly available

Not nearing discontinuation based on current portfolio information

Equivalent or alternative models to consider

- TI TPS73118 150 mA fixed 1.8 V low dropout SOT-23

- TI LP5907-1.8 250 mA very low noise available in WSON and DSBGA

- TI TPS7A02-1.8 200 mA ultra-low IQ very small packages

- Microchip MCP1703A-1802 250 mA SOT-223 or SOT-23 confirm dropout and input limits

- Microchip MIC5205-1.8 150 mA SOT-23 confirm PSRR and noise

- Analog Devices ADP160-1.8 150 mA tiny packages

- onsemi NCP4681DSQ18 150 mA low quiescent current

- Notes specs pinouts noise PSRR dropout and packages differ verify against your requirements and datasheets

For drop-in alternatives in the 5-ball DSBGA form factor or exact pinout compatibility contact the Y-IC sales team via our website for tailored recommendations

Key Application Areas

Wearables and portable electronics requiring small size and low power

IoT sensors and wireless modules with 1.8 V rails

Smartphones tablets and accessories

MCU DSP FPGA and ASIC core or I O rails at 1.8 V

Camera sensors image processors and memory rails

Audio RF and mixed-signal circuits needing clean low-noise 1.8 V supplies

Industrial and medical devices operating from multi-cell batteries or 5 V sources

Datasheet

Y-IC hosts the most authoritative and up-to-date datasheet for LP3999ITL-1.8/NOPB on our website. Download it from this page to get pinout electrical curves layout guidance and full packaging details.

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