LP3984ITPX-1.8/NO Texas Instruments Integrated Circuit (BGA) In Stock
LP3984ITPX-1.8/NO is a micropower LDO linear voltage regulator from Texas Instruments with a fixed 1.8 V output, ultra-low quiescent current for battery-powered devices, in a tiny BGA package for space-constrained designs.
- Manufacturer
- Texas Instruments
- Package
- BGA
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LP3984ITPX-1.8/NO Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8 V output low-dropout regulator optimized for micropower operation, extending battery life in portable and wearable electronics
- Ultra-compact BGA package enabling dense multi-component PCB layouts in miniaturized IoT sensors and mobile devices
- Low quiescent current design maintaining stable 1.8 V regulation across light and heavy load conditions without external components
Applications
LP3984ITPX-1.8/NO is designed for powering microcontrollers, memory modules, and digital logic in battery-operated portable devices where minimizing idle current is critical. Its fixed 1.8 V output suits direct supply of low-voltage processors and RF transceivers in IoT sensor nodes and wearables. The BGA package enables integration in compact multi-layer PCBs where board area per component is extremely limited.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LP3984ITPX-1.8/NO:
Frequently Asked Questions
What output voltage does LP3984ITPX-1.8/NO regulate to, and what load types benefit most?
LP3984ITPX-1.8/NO provides a fixed 1.8 V output, making it directly compatible with low-voltage digital ICs, microcontrollers, and LPDDR memory operating at 1.8 V. Battery-powered devices benefit most because the fixed output eliminates feedback resistor tolerances and simplifies the power supply design.
Why is the BGA package of LP3984ITPX-1.8/NO advantageous for wearable and miniaturized products?
The BGA package of LP3984ITPX-1.8/NO has a very small PCB footprint, typically under 1 mm x 1 mm pitch, which allows it to fit alongside other surface-mount components in the densely routed multi-layer PCBs found in smartwatches, hearing aids, and medical sensor patches. It also enables shorter power supply traces, reducing parasitic inductance and improving noise immunity.
How does LP3984ITPX-1.8/NO compare to a switching regulator for 1.8 V generation in noise-sensitive RF circuits?
Unlike switching regulators that introduce periodic switching noise at their operating frequency, typically 1 MHz to 4 MHz, LP3984ITPX-1.8/NO is a linear LDO that produces a clean, low-noise 1.8 V output. This makes it preferable for powering RF transceivers, ADC reference stages, and analog front-ends where switching noise would degrade sensitivity or signal-to-noise ratio.
What dropout characteristic should designers consider when using LP3984ITPX-1.8/NO from a Li-ion battery?
LDO regulators like LP3984ITPX-1.8/NO require the input voltage to exceed the output by at least the dropout voltage, typically around 0.3 V for micropower LDOs. When operating from a Li-ion cell that discharges from 4.2 V to 3.0 V, the minimum 2.1 V input headroom above the 1.8 V output is comfortably maintained down to near full discharge, providing reliable regulation throughout most of the battery cycle.
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About Texas Instruments
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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