Texas Instruments LMP7300MMX/NOPB

Overview

LMP7300MMX/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, 0.3 mV input offset voltage, and 4 µs propagation delay at 5 V, enabling ultra-low-power threshold detection in battery-critical systems such as portable medical monitors and energy-harvesting sensor nodes.

For engineers reviewing the LMP7300MMX/NOPB datasheet, LMP7300MMX/NOPB pinout, LMP7300MMX/NOPB application, or LMP7300MMX/NOPB equivalent, key selection considerations include its open-collector output (12 V tolerant), ±0.75 mV max offset over temperature, 0.25% reference accuracy, and dual hysteresis control pins enabling asymmetric trip-point design without external feedback networks.

Technical Context

The LMP7300MMX/NOPB integrates a rail-to-rail input comparator core with a trimmed bandgap reference, isolating hysteresis programming from signal path impedance. Its HYSTP and HYSTN pins accept independent voltage inputs to set VIH and VIL thresholds-each with 1 mV/mV linearity and <4 nA leakage-enabling precise dead-band tuning without affecting reference stability or input bias.

This architecture decouples hysteresis generation from supply voltage and input common-mode range (1 V above GND to V+), supporting stable trip points across 2.7–12 V operation. The 2.048-V reference exhibits 55 ppm/°C tempco and <100 µV_RMS noise (10 Hz–10 kHz), making it suitable for direct interfacing with 12-bit ADCs or DACs requiring binary-divisible reference voltages.

Key Specifications

Pinout & Package

Package: 8-pin VSSOP (DGK), body size 3.00 mm × 3.00 mm - compact footprint for space-constrained PCB layouts in wearables and IoT edge nodes.

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 LMP7300MMX/NOPB uniquely delivers user-programmable asymmetric hysteresis without external components, enabling adaptive noise rejection in thermally variable environments while maintaining 0.25% reference accuracy and 13 µA quiescent current.

Availability

LMP7300MMX/NOPB is available at Aetrix Electronics and suitable for battery monitoring, precision threshold detection, battery management systems, and zero crossing detector applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMP7300MMX/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 personal electronics markets.

The LMP7300MMX/NOPB belongs to TI's LMP precision amplifier family, designed specifically for micropower, high-accuracy threshold detection in resource-constrained systems where reference stability, low offset, and configurable hysteresis are essential.

FAQ

What is the maximum supply voltage for the LMP7300MMX/NOPB?

The LMP7300MMX/NOPB supports a supply voltage range of 2.7 V to 12 V. Absolute maximum rating is 13.6 V, but operation beyond 12 V is not recommended. At 12 V, supply current remains at 14 µA typical, and propagation delay improves to 3.5 µs (100 mV overdrive), making it suitable for 12 V automotive or industrial sensor interfaces without external regulators.

How does the LMP7300MMX/NOPB implement independent positive and negative hysteresis?

The LMP7300MMX/NOPB uses dedicated HYSTP and HYSTN pins to set VIH and VIL thresholds independently. Each pin accepts a voltage between 1 V above GND and V+, with 1 mV/mV gain and <4 nA leakage. This architecture isolates hysteresis programming from input impedance and supply variations, enabling asymmetric bands (e.g., +3 mV/-10 mV) without feedback networks or calibration.

Can the LMP7300MMX/NOPB drive an LED directly?

Yes - the open-collector OUT pin sinks >10 mA with <0.4 V saturation voltage at 10 mA load, allowing direct LED drive when paired with a series current-limiting resistor. For example, with a 5 V pull-up and 2 V LED forward voltage, a 220 Ω resistor sets ~13.6 mA current. The 2.048 V REF pin can also bias the LED brightness control network, as shown in TI's typical application diagrams.

What is the temperature coefficient of the LMP7300MMX/NOPB reference voltage?

The LMP7300MMX/NOPB reference exhibits a temperature coefficient of 55 ppm/°C over −40°C to +125°C. This translates to ±0.113 mV drift across the full range (2.048 V × 55 ppm × 165°C), contributing to its 0.25% total accuracy specification. The bandgap design includes curvature correction to minimize thermal nonlinearity, ensuring stable trip points in automotive under-hood or industrial ambient conditions.

Is the LMP7300MMX/NOPB pin-compatible with other packages in the same family?

The LMP7300MMX/NOPB is the VSSOP-8 (DGK) variant of the LMP7300. It shares identical pinout and electrical specifications with the SOIC-8 (D) variant (e.g., LMP7300M/NOPB), differing only in package dimensions (3.00 mm × 3.00 mm vs 3.91 mm × 4.90 mm). Both use the same 8-pin configuration: +IN, −IN, GND, OUT, HYSTN, HYSTP, REF, V+, enabling drop-in replacement where board space permits.