Texas Instruments LP3985IBP-3.3/NOPB

Mfr. Part

LP3985IBP-3.3/NOPB

Manufacturer

Luminary Micro Texas Instruments

Y-IC is a quality distributor for Texas Instruments. We deliver genuine TI products and provide customers with top-tier service, technical support, and fast logistics

Detailed Description

Low dropout linear voltage regulator for 3.3 V rails, rated up to 150 mA output current. Ultra-compact 5-ball DSBGA package for space-limited designs. Positive output configuration with enable control, robust protections, and RoHS3 compliance. Ideal for portable and battery-powered devices that need stable 3.3 V with low dropout and moderate PSRR

Key Features

Fixed 3.3 V output

Output current up to 150 mA

Low dropout typical 0.1 V at 150 mA

Positive regulator with single channel

Enable pin for on off control

PSRR about 50 dB at 1 kHz and about 40 dB at 10 kHz

Wide input voltage up to 6 V

Protections include over current, over temperature, and short circuit

Surface mount package for high density layouts

Operating temperature range minus 40 to plus 125 degrees Celsius

RoHS3 compliant and lead free NOPB variant

Base product family LP3985

Key Advantages

Very small footprint saves PCB area and enables ultra-compact designs

Low dropout improves efficiency especially at low input headroom

Enable control supports power sequencing and low-power standby

Solid PSRR improves supply ripple rejection for sensitive loads

Built-in protections increase system reliability

Broad input range supports many battery chemistries and adapters

Simple, stable operation with standard ceramic capacitors as specified in the datasheet

Y-IC supply chain strength ensures dependable availability and support

Packaging

Package type 5-ball DSBGA wafer level chip scale package

Size approximately 1.41 mm by 1.08 mm ultra compact outline

Mounting type surface mount compatible with standard SMT reflow

Ball count and configuration 5 bumps in fine pitch grid consult datasheet for ball map

Material silicon die with wafer level passivation typical of DSBGA construction

Tape and Reel packaging for automated assembly

Thermal characteristics small WLCSP package requires good PCB thermal design and adequate copper area for heat spreading see datasheet thermal guidelines

Electrical properties fixed 3.3 V output single regulator channel input up to 6 V dropout typical around 0.1 V at 150 mA PSRR about 50 to 40 dB in the 1 kHz to 10 kHz range

Pin functions include VIN VOUT GND EN and one additional ball per TI ball map refer to datasheet for exact pinout and orientation

Lifecycle

Current status generally active for TI LP3985 family and NOPB lead free variant widely used in production designs

Not known to be near discontinuation based on typical market availability

Equivalent or alternative models to consider

- Texas Instruments LP5907-3.3 low noise LDO up to 250 mA available in WLCSP and small packages

- Texas Instruments TPS7A02-3.3 ultra low IQ LDO up to 200 mA very small packages

- Texas Instruments TPS73633 or TPS7A05-3.3 general purpose LDO options small packages

- Microchip MIC5504-3.3 or MIC5219-3.3 compact LDOs for portable systems

- ON Semiconductor NCP114-3.3 or NCP171-3.3 low dropout small footprint

- Analog Devices ADP160-3.3 or ADP7102 series depending on input range and noise needs

- Diodes Incorporated AP7333-3.3 and AP7365 series general purpose LDOs

Important note verify pinout package type dropout current limit PSRR and stability requirements when selecting alternates

If you need drop-in equivalents or lifecycle confirmation contact our Y-IC sales team on our website for up-to-date recommendations

Key Application Areas

Wearables and portable consumer devices

IoT sensor nodes and wireless modules

Smartphones tablets and accessories

Portable medical electronics and health monitors

Camera modules and imaging subsystems

MCU core and I O rails and general purpose 3.3 V point-of-load conversion

Audio and RF subsystems needing moderate PSRR on 3.3 V

Industrial and automotive modules within the specified temperature range

Datasheet

Our website hosts the most authoritative datasheet for LP3985IBP-3.3 NOPB. We strongly recommend downloading it from this page to get pin maps electrical characteristics application notes and layout guidelines

Availability

Quantity in stock 2626 units ready for shipment from Y-IC

Technical Parameters Summary

Output type fixed 3.3 V

Number of regulators 1

Output current 150 mA

Quiescent current typical around 150 microamps refer to datasheet for exact values

Supply current up to around 250 microamps depending on conditions refer to datasheet

Maximum input voltage 6 V

Voltage dropout maximum 0.1 V at 150 mA

PSRR about 50 dB at 1 kHz decreasing to about 40 dB at 10 kHz

Control enable pin

Protections over current over temperature short circuit

Operating temperature minus 40 to plus 125 degrees Celsius

Mounting surface mount DSBGA 5 ball 1.41 x 1.08 mm

Compliance RoHS3

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