LP3985ITL-3.3/NOPB Texas Instruments Integrated Circuit (Other) In Stock

Name: LP3985ITL-3.3/NOPB
Brand: Texas Instruments
SKU: LP3985ITL-3.3/NOPB
Availability: InStock

Texas Instruments LP3985ITL-3.3/NOPB is a micropower 150 mA ultra-low-dropout CMOS LDO regulator with a fixed 3.3 V output and only 60 mV typical dropout voltage, operating from a 2.5 V to 6 V input supply. Its low noise output and tiny 5-ball BGA package make it ideal for RF, audio, and precision analog circuits.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LP3985ITL-3.3/NOPBOther

Quick Facts

Manufacturer: Texas Instruments
Package: Other
Pin Count: 5
Lifecycle: ACTIVE
Datasheet: LP3985ITL-3.3/NOPB Datasheet PDF
Category: Integrated Circuit
Price: From $0.3221(MOQ 1000)
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LP3985ITL-3.3/NOPB?

150 mA output current with only 60 mV typical dropout voltage
Fixed 3.3 V output with ultra-low noise for RF and analog circuits
2.5 V to 6 V wide input voltage range
Micropower quiescent current for battery-powered applications
5-ball DSBGA package in an ultra-compact footprint
CMOS pass element for low ground current even at no load
RoHS compliant, lead-free (NOPB) packaging

What is LP3985ITL-3.3/NOPB used for?

LP3985ITL-3.3/NOPB is used to supply clean, low-noise 3.3 V power to RF transceivers, PLLs, VCOs, and precision ADCs in cellular, Bluetooth, and Wi-Fi modules where power supply noise directly degrades receiver sensitivity. It also serves as a post-regulator behind switching converters in audio codec supplies, sensor front-ends, and portable medical instruments where the 60 mV dropout enables efficient operation from near-flat Li-ion batteries.

What are the specifications of LP3985ITL-3.3/NOPB?

Pbfree Code	Yes
YTEOL	15
Adjustability	FIXED
Dropout Voltage1-Max	0.1V
Dropout Voltage1-Nom	0.06V
Input Voltage Absolute-Max	6.5V
Input Voltage-Max	6V
Input Voltage-Min	2.5V
JESD-30 Code	R-XBGA-B5
JESD-609 Code	e1
Line Regulation-Max	0.0073%
Load Regulation-Max	0.0098%
Number of Functions	1
Number of Outputs	1
Operating Temperature TJ-Max	125°C
Operating Temperature TJ-Min	-40 °C
Output Current1-Max	0.15A
Output Voltage1-Max	3.399V
Output Voltage1-Min	3.201V
Output Voltage1-Nom	3.3V
Package Body Material	UNSPECIFIED
Package Equivalence Code	BGA5,3X3,17/10
Package Shape	RECTANGULAR
Package Style	GRID ARRAY, VERY THIN PROFILE, FINE PITCH
Packing Method	TR
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Regulator Type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Surface Mount	YES
Technology	CMOS
Terminal Finish	Tin/Silver/Copper (Sn/Ag/Cu)
Terminal Form	BALL
Terminal Pitch	0.5mm
Terminal Position	BOTTOM
Time@Peak Reflow Temperature-Max (s)	30
Voltage Tolerance-Max	3%
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.90

Where can I find the LP3985ITL-3.3/NOPB datasheet?

LP3985ITL-3.3/NOPB Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for LP3985ITL-3.3/NOPB?

Compatible alternatives and drop-in replacements for LP3985ITL-3.3/NOPB:

LP3985ITL-3.3National Semiconductor Corporation Fixed Positive LDO

Regulator, 3.3V, 0.1V Dropout, CMOS, PBGA5

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

How does the 60 mV typical dropout voltage of LP3985ITL-3.3/NOPB benefit near-flat battery designs?

With only 60 mV typical dropout, LP3985ITL-3.3/NOPB maintains a regulated 3.3 V output as long as the input exceeds approximately 3.36 V, extracting more usable energy from a Li-ion cell that discharges toward 3.4 V near end-of-life. Standard LDOs with 300 mV dropout would drop out of regulation significantly earlier, wasting battery capacity.

What output noise level does LP3985ITL-3.3/NOPB achieve, and why is that critical for RF supply rails?

LP3985ITL-3.3/NOPB produces output noise of approximately 30 µV RMS in the 10 Hz to 100 kHz band, making it suitable for directly powering RF LNA and VCO supply pins where millivolt-level supply noise raises phase noise and degrades adjacent-channel selectivity by several dB. A bypass capacitor of 1 µF on the output optimizes noise performance.

What is the maximum input voltage for LP3985ITL-3.3/NOPB, and can it be powered from a 5 V USB rail?

LP3985ITL-3.3/NOPB accepts up to 6 V continuously (6.5 V absolute maximum), making it fully compatible with a 5 V USB power rail including the 5.25 V upper tolerance limit. The 1.7 V headroom between 5 V input and 3.3 V output ensures low-dropout operation well within the regulator's rated PSRR bandwidth.

How compact is the 5-ball DSBGA package and what PCB design rules apply?

The DSBGA 5-ball package measures approximately 0.73 mm × 0.73 mm with a 0.4 mm ball pitch, enabling power regulation within less than 1 mm² of PCB area adjacent to the powered IC. Layout requires solder mask-defined pads and fine-pitch SMT process capability, but the package eliminates the need for a separate ferrite-bead filter in noise-sensitive analog designs.

Is LP3985ITL-3.3/NOPB suitable for powering precision ADC reference circuits in a 3.3 V system?

Yes. The ultra-low output noise of approximately 30 µV RMS and the high PSRR of typically 65 dB at 1 kHz make LP3985ITL-3.3/NOPB an effective reference-supply filter for 16-bit to 24-bit ADCs where supply ripple coupling into the reference input degrades SNR. A 1 µF output capacitor and short trace routing to the ADC VREF pin complete the design.

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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

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AvailabilityIn Stock

Reference Price (USD)

From $0.3221

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1000+	$0.4312	$431.20
10000+	$0.3844	$3844.00
100000+	$0.3221	$32210.00

pcs

Unit price: $0.4312 · Total: $431.20

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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LP3985ITL-3.3/NOPB Texas Instruments Integrated Circuit (Other) In Stock

What are the key features of LP3985ITL-3.3/NOPB?

What is LP3985ITL-3.3/NOPB used for?

What are the specifications of LP3985ITL-3.3/NOPB?

Compliance & Regulatory

Where can I find the LP3985ITL-3.3/NOPB datasheet?

What are equivalent replacements for LP3985ITL-3.3/NOPB?

Frequently Asked Questions

How does the 60 mV typical dropout voltage of LP3985ITL-3.3/NOPB benefit near-flat battery designs?

What output noise level does LP3985ITL-3.3/NOPB achieve, and why is that critical for RF supply rails?

What is the maximum input voltage for LP3985ITL-3.3/NOPB, and can it be powered from a 5 V USB rail?

How compact is the 5-ball DSBGA package and what PCB design rules apply?

Is LP3985ITL-3.3/NOPB suitable for powering precision ADC reference circuits in a 3.3 V system?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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