Texas Instruments LP3985ITL-3.3/NOPB

Mfr. Part

LP3985ITL-3.3/NOPB

Manufacturer

Luminary Micro/Texas Instruments

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Detailed Description

3.3 V fixed-output low-dropout (LDO) linear regulator, 150 mA, single-channel, positive output, enable control, protections for over current, over temperature, and short circuit. Ultra-small 5-ball DSBGA/WFBGA package (1.41 x 1.08 mm) for space-constrained designs. RoHS3 compliant. Operating temperature -40°C to 125°C. Tape & Reel packaging. Base family LP3985. Ideal for clean, stable 3.3 V rails from inputs up to 6 V with low dropout of 0.1 V at 150 mA. Quantity available: 2698.

Key Features

Fixed 3.3 V output

150 mA output current

Very low dropout: 0.1 V at 150 mA

Input voltage up to 6 V

Positive output, single regulator channel

Enable pin for easy on/off control

PSRR: 50 dB at 1 kHz, 40 dB at 10 kHz

Protections: over current, over temperature, short circuit

Ultra-small 5-DSBGA (1.41 x 1.08 mm)

Surface-mount, WFBGA/DSBGA

RoHS3 compliant

Wide temp range: -40°C to 125°C

Tape & Reel for automated assembly

Key Advantages

Saves board space with tiny 5-ball chip-scale package

Low dropout helps maximize battery life and reduce heat

Good PSRR for cleaner rails in noise-sensitive circuits

Built-in protections improve system reliability

Simple, single-rail 3.3 V regulation with enable control

Broad input range supports many power sources (battery or adapter)

High temperature rating for harsh environments

Easy to assemble in high-volume production with Tape & Reel

Packaging

Type: 5-DSBGA / 5-WFBGA chip-scale package

Material: Molded chip-scale BGA with solder balls, silicon die on substrate

Size: 1.41 x 1.08 mm ultra-compact footprint; ultra-low profile

Pin configuration: 5-ball array; functions typically include VIN, VOUT, GND, EN, and possibly BYPASS (refer to datasheet ball map for exact assignment)

Thermal characteristics: Chip-scale package relies on PCB copper for heat spreading; design good copper area and thermal vias for best performance; operation rated up to 125°C ambient with proper layout

Electrical properties (as provided): Output 150 mA; Dropout 0.1 V at 150 mA; PSRR 50 dB at 1 kHz and 40 dB at 10 kHz; Input up to 6 V; Fixed output 3.3 V; Enable control; Protections for OC/OT/SC; Quiescent current listed as 150 A; Max supply current listed as 250 A (note: verify units and typical values in the datasheet)

Supplier device package: 5-DSBGA (1.41 x 1.08)

Package for shipment: Tape & Reel (TR)

Lifecycle

Current status: Active in TI’s LP3985 family based on available industry information

Not nearing discontinuation to the best of current public knowledge

Equivalent or alternative models (verify pinout, electrical ratings, and PSRR before use):

- Same family, different fixed outputs: LP3985ITL-1.8/NOPB, LP3985ITL-2.5/NOPB, LP3985ITL-3.0/NOPB (for designs needing other voltages)

- Similar TI LDO families: TLV700 series, TPS736 series, TPS7A02 series (alternative specs and packages)

- Other vendors’ low-noise 150 mA LDOs may be suitable depending on requirements

If you need a pin-to-pin or drop-in replacement, or confirmation of last-time-buy status, please contact our sales team via the Y-IC website for the latest details and tailored cross-references

Key Application Areas

Battery-powered devices and portable electronics

Wearables and handheld instruments

Microcontroller and DSP core rails at 3.3 V

Sensors, RF modules, wireless transceivers

Cameras, audio modules, and low-noise analog front-ends

IoT nodes, smart home devices, edge computing modules

Industrial control, test and measurement, medical portables

Telecom and networking auxiliary rails

Point-of-load regulation for FPGAs and ASIC support logic

Datasheet

Y-IC hosts the most authoritative datasheet for this exact model. For accurate specs, pin maps, layout guidance, and thermal data, download the datasheet from this page now for reference and design validation.

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