Texas Instruments LP2951ACMMX-3.0/NOPB

Mfr. Part

LP2951ACMMX-3.0/NOPB

Manufacturer

Luminary Micro / Texas Instruments

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Detailed Description

100 mA low-dropout (LDO) linear regulator from the TI LP2951A family. This specific -3.0 option provides a fixed 3.0 V output in an 8-VSSOP (MSOP-8) surface-mount package. Wide input range up to 30 V, low dropout (max 0.6 V at 100 mA), micropower operation, enable/shutdown control, error flag (power-good), reference output, and comprehensive protection (overcurrent, thermal shutdown, short-circuit). RoHS3 compliant, NOPB (lead-free, “Green”). Operating junction temperature range −40°C to +125°C. Base product number LP2951. Main category: Integrated Circuits (ICs). Small classification: Power Management (PMIC) – Voltage Regulators – Linear, Low Drop Out (LDO) Regulators.

Key Features

Output configuration: Positive, single regulator (1 channel)

Output type: Fixed 3.0 V for this model; adjustable versions in the LP2951 family support 1.235 V (reference) up to ~29 V with external resistors

Output current: up to 100 mA

Dropout voltage: max 0.6 V at 100 mA

Input voltage: up to 30 V

Quiescent current: typically around 120 µA (micropower operation); supply current max up to 14 mA depending on load/conditions

Control features: Enable/Shutdown pin for low-power standby

Monitoring: Error flag (power-good) output, precision 1.235 V reference

Regulation: Sense/feedback pin supports remote load sensing for improved accuracy

Protections: Overcurrent limit, thermal shutdown, short-circuit protection

Mounting type: Surface mount

Temperature range: −40°C to +125°C (TJ)

Compliance: RoHS3 compliant; NOPB lead-free finish

Base product: LP2951A family with broad package and voltage options

Key Advantages

Low power consumption extends battery life in portable designs

Wide input range makes it easy to derive 3.0 V rails from 12 V/24 V/28 V systems

Stable, low-noise linear regulation for sensitive analog and RF circuits

Built-in error flag simplifies system power-good monitoring

Sense and adjust pins enable tight regulation and remote sensing over wiring

Mature, proven TI platform with strong documentation and long-term availability

Packaging

Shipment type: Tape & Reel (TR) for automated assembly

Package/case: 8-VSSOP (also known as MSOP-8); some references list 8-TSSOP/8-MSOP form factors for family variants

Body size: 3.00 mm width (0.118"), compact footprint for dense PCBs

Material: Epoxy-molded plastic body with copper leadframe; lead-free (NOPB)

Pin configuration (LP2951A standard functions): VIN, VOUT, GND, Feedback/Adjust, Sense, Shutdown/Enable, Reference, Error Output

Lead pitch: 0.65 mm typical

Thermal characteristics: Junction temperature −40°C to +125°C; typical θJA around 180–200 °C/W on a standard PCB (actual depends on layout and airflow)

Electrical properties summary: Positive LDO, 100 mA max load, 0.6 V dropout at 100 mA, VIN up to 30 V, fixed 3.0 V output (this model), protections include overcurrent, thermal, and short-circuit

Lifecycle

Status: Active and in production; not nearing discontinuation

Equivalent or alternative models (verify pin compatibility and specs for your design):

- Same family fixed voltages: LP2951ACMMX-3.3/NOPB (3.3 V), LP2951ACMMX-5.0/NOPB (5.0 V)

- Same family adjustable: LP2951ACMMX/NOPB (adjustable in VSSOP-8), LP2951AIMX/NOPB (SOIC-8), LP2951AIM/NOPB (SOIC-8)

- Related TI LDOs (not pin-for-pin; check details): TLV700 series, TPS7A05, TPS7A02, TPS7A16, LM2936

- Cross-vendor options (spec/footprint may differ; verify): Microchip MCP1702/MCP1703, onsemi NCP114/NCP167, Analog Devices ADM7150 (higher performance class)

For exact drop-in replacements or detailed cross-reference support, please contact our sales team via the Y-IC website

Key Application Areas

Automotive ECUs and sensor modules requiring −40°C to +125°C and wide VIN

Industrial control, factory automation, and instrumentation

Battery-powered and portable devices needing a clean 3.0 V rail

Microcontroller and digital logic supplies from 12/24/28 V sources

Noise-sensitive analog front-ends, op-amp/ADC/DAC rails

Post-regulation after switching converters to reduce ripple and noise

Remote-sensed regulated rails over harnesses or longer traces

Datasheet

Our website hosts the most authoritative and up-to-date datasheet for LP2951ACMMX-3.0/NOPB. Download it now from this page for pin details, typical application circuits, performance curves, and layout guidance.

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