Texas Instruments LP3995ILD-3.0

Overview

LP3995ILD-3.0 from Texas Instruments is a micropower 150mA CMOS low-dropout (LDO) voltage regulator in a 6-pin WSON package, delivering a fixed 3.0V output with ±75mV accuracy, 60mV typical dropout at 150mA, and 30µs fast turn-on for portable RF/analog power rails.

For engineers reviewing the LP3995ILD-3.0 datasheet, LP3995ILD-3.0 pinout, LP3995ILD-3.0 application, or LP3995ILD-3.0 equivalent, this page delivers verified electrical specs, thermal behavior, enable-controlled shutdown timing, ceramic-capacitor stability data, and real-world substitution guidance - all tied explicitly to the LP3995ILD-3.0/NOPB ordering variant.

Technical Context

The LP3995ILD-3.0 implements a CMOS-based LDO architecture with internal bandgap reference, active discharge circuitry on VOUT for fast turn-off, and logic-controlled enable input (VEN) with 0.4V low-threshold and 0.9V high-threshold. It operates across 2.5V–6.0V input range and supports −40°C to +125°C junction temperature.

Its design integrates thermal-overload and short-circuit protection, achieves 60dB PSRR at 1kHz, and maintains stability with only 1.0µF ceramic output capacitance and a dedicated 0.01µF noise-bypass capacitor on CBYPASS - eliminating need for external compensation.

Key Specifications

Pinout & Package

LP3995ILD-3.0 is packaged in a 6-pin WSON (NGD0006A) with exposed thermal pad, measuring 2.0mm × 2.0mm × 0.8mm. The package uses CuSn lead finish, is RoHS-compliant and green (no Sb/Br), and rated MSL Level-3 (260°C peak).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPL720F30 and MCP1700T-3002E/MB, LP3995ILD-3.0 uniquely balances 150mA capability, 30µs turn-on, active discharge, and 25µV_RMS noise - making it the only option among the three qualified for RF-analog co-location in space-constrained portable designs.

Availability

LP3995ILD-3.0 is available at Aetrix Electronics and suitable for GSM phone power management, Bluetooth SoC biasing, wideband CDMA front-end regulation, and portable information appliance subsystems requiring stable component supply across extended temperature and lifecycle windows.

Supply support for LP3995ILD-3.0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in power management ICs for portable and industrial applications.

The LP3995 series was engineered specifically for battery-powered RF/analog subsystems demanding micropower operation, fast enable control, and ceramic-capacitor compatibility - targeting cellular handsets, Bluetooth peripherals, and portable instrumentation.

FAQ

What is the maximum input voltage rating for LP3995ILD-3.0?

The absolute maximum input voltage for LP3995ILD-3.0 is 6.5V, but the recommended operating range is 2.5V to 6.0V per the datasheet. Exceeding 6.0V may trigger internal protection or degrade long-term reliability. For sustained operation, keep VIN ≤6.0V - especially critical when used with fully charged Li-ion batteries (4.2V) or stacked alkaline cells.

Does LP3995ILD-3.0 require an external bypass capacitor, and if so, what value?

Yes, LP3995ILD-3.0 requires a 0.01µF ceramic capacitor (NPO or COG dielectric preferred) connected between the CBYPASS pin and GND. This capacitor reduces reference noise and prevents output overshoot during startup. Omitting it degrades noise performance and risks instability under transient load conditions - the 0.01µF value is mandatory per TI's application guidance and cannot be omitted or substituted with larger values.

Can LP3995ILD-3.0 operate without any load connected to VOUT?

Yes, LP3995ILD-3.0 remains stable and in regulation with zero load - a feature confirmed in the "No-Load Stability" section of the datasheet. This makes it suitable for applications like CMOS RAM keep-alive circuits or standby bias rails where intermittent loading occurs. No minimum load resistor is required, simplifying design and reducing quiescent power waste.

What is the thermal resistance (θJA) of the LP3995ILD-3.0 WSON package?

The junction-to-ambient thermal resistance (θJA) for LP3995ILD-3.0 in its 6-pin WSON package is 88°C/W, as specified in the Thermal Properties table. This value assumes standard JEDEC 2-layer board layout; actual θJA will vary with PCB copper area, thermal vias, and airflow. For 150mA load at 3.0V output with 4.2V input, power dissipation is ~180mW - resulting in ~16°C junction rise above ambient under nominal conditions.

Is LP3995ILD-3.0 pin-compatible with other variants in the LP3995 family?

Yes, all LP3995 WSON variants - including LP3995ILD-1.5, LP3995ILD-1.8, LP3995ILD-2.8, and LP3995ILD-3.0 - share identical 6-pin NGD0006A footprints and pin assignments. Only the output voltage and device marking differ. This allows voltage-scaling flexibility across designs without PCB revision, provided input voltage and load requirements remain compatible with each variant's specification.