Texas Instruments LMP7300MM/NOPB

Overview

LMP7300MM/NOPB from Texas Instruments is a micropower precision comparator with integrated 2.048-V bandgap reference and independently adjustable positive/negative hysteresis. It delivers 13 μA supply current, 0.75-mV max input offset voltage, and 4 μs propagation delay at 5 V, enabling ultra-low-power battery monitoring and precision threshold detection in portable instrumentation.

For engineers reviewing the LMP7300MM/NOPB datasheet, LMP7300MM/NOPB pinout, LMP7300MM/NOPB application, or LMP7300MM/NOPB equivalent, key selection criteria include open-collector output compatibility with mixed-voltage systems up to 12 V, ±0.25% reference accuracy over −40°C to 125°C, and independent HYSTP/HYSTN terminal control for asymmetric hysteresis configuration without affecting trip-point stability.

Technical Context

The LMP7300MM/NOPB integrates a rail-to-rail input comparator and a trimmed bandgap reference on a single die. Its comparator uses an open-collector output stage capable of sinking ≥10 mA while maintaining VOL ≤ 0.4 V across temperature, and features 100 dB CMRR/PSRR to reject supply and common-mode noise.

Hysteresis is implemented via two dedicated analog input pins (HYSTP, HYSTN), each with 1 V to V+ common-mode range and <4 nA leakage. The reference output provides 1 mA source/sink capability with 55 ppm/°C temperature coefficient and 100 μVRMS broadband noise, decoupled internally from comparator signal paths to prevent interaction.

Key Specifications

Pinout & Package

Package: VSSOP-8 (3.00 mm × 3.00 mm), moisture sensitivity level 1, lead-free (NOPB).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision comparator with reference applications.

Compared with TLV3011IDBVR and MAX9063ASA+, the LMP7300MM/NOPB uniquely provides independent HYSTP/HYSTN terminals for programmable asymmetric hysteresis while maintaining 2.048-V reference accuracy and micropower operation - essential for high-reliability battery cutoff and sensor alarm circuits.

Availability

LMP7300MM/NOPB is available at Aetrix Electronics and suitable for battery monitoring, precision threshold detection, battery management systems, and zero-crossing detectors requiring stable component supply across automotive, industrial, and portable electronics programs.

Supply support for LMP7300MM/NOPB 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs for industrial, automotive, and consumer applications.

The LMP7300MM/NOPB belongs to TI's LMP precision amplifier family, designed specifically for low-power, high-accuracy threshold detection in battery-operated and harsh-environment systems where reference stability and hysteresis flexibility are critical.

FAQ

What is the maximum output voltage swing supported by the LMP7300MM/NOPB open-collector output?

The LMP7300MM/NOPB open-collector output supports a maximum voltage of +12 V relative to GND, regardless of the V+ supply voltage. This allows direct interfacing with higher-voltage logic families or discrete loads such as LEDs and relays without level-shifting circuitry. The output can sink up to 10 mA while maintaining VOL ≤ 0.4 V across the full −40°C to 125°C temperature range. For proper operation, an external pull-up resistor must be connected between OUT and the desired output rail voltage.

How does the LMP7300MM/NOPB achieve independent positive and negative hysteresis control?

The LMP7300MM/NOPB achieves independent hysteresis control through two dedicated analog input pins: HYSTP (Pin 6) sets the upper trip point VIH, and HYSTN (Pin 5) sets the lower trip point VIL. Each pin has its own high-impedance input path with <4 nA leakage, isolating hysteresis programming from the comparator's INP/INN nodes. This architecture prevents loading effects on the reference or input signal, ensuring stable trip thresholds even when asymmetric hysteresis (e.g., +3 mV / −10 mV) is configured using external resistor dividers tied to the REF pin.

What is the guaranteed accuracy of the 2.048-V reference in the LMP7300MM/NOPB over temperature?

The LMP7300MM/NOPB reference voltage is guaranteed to be within ±0.25% of 2.048 V over the full operating temperature range of −40°C to +125°C. This specification is ensured by factory trimming with curvature correction to compensate for bandgap thermal nonlinearity. At 25°C, the typical reference voltage is 2.048 V with ±5 mV (±0.25%) limits; worst-case deviation across temperature remains bounded by this tolerance, making it suitable for precision ADC/DAC biasing and calibrated sensor signal conditioning where absolute voltage accuracy is critical.

Can the LMP7300MM/NOPB operate from a 2.7-V supply while maintaining full performance specifications?

Yes, the LMP7300MM/NOPB is fully specified and tested for operation from 2.7 V to 12 V. At 2.7 V, it maintains all key parameters: supply current ≤17 μA, input offset voltage ≤2.2 mV (VSSOP), propagation delay ≤17 μs (10 mV overdrive), and reference voltage accuracy within ±0.25%. The common-mode input range extends from 1 V above GND to V+, allowing valid operation with signals as low as 1 V. This makes the LMP7300MM/NOPB ideal for single-cell Li-ion (2.7–4.2 V) and multi-cell alkaline (2.7–4.5 V) battery-powered systems where minimum supply voltage headroom is constrained.

What is the purpose of the REF pin on the LMP7300MM/NOPB, and how should it be decoupled?

REF (Pin 7) provides the 2.048-V precision bandgap reference output, usable as a stable trip-point source for comparator inputs or as a bias for external hysteresis resistor networks. It sources or sinks up to ±1 mA with 55 ppm/°C temperature coefficient. To ensure low-noise operation, TI recommends placing a 0.1-μF ceramic capacitor from REF to GND, located as close as possible to the device. For applications requiring ultra-low noise (e.g., high-resolution data acquisition), a 5-μF tantalum capacitor in series with a 190-Ω resistor to GND may be added to filter reference output noise without compromising stability.