Analog Devices Inc./Maxim Integrated MAX6784TCC+

Overview

MAX6784TCC+ from Maxim Integrated is a low-power, triple-level battery monitor IC with 1% threshold accuracy over -40°C to +85°C, push-pull outputs, and factory-set 10% hysteresis (C version). It monitors three independent battery voltage levels using external resistive dividers on IN1–IN3 inputs and asserts active-low LBO1–LBO3 outputs-ideal for staged shutdown in portable medical devices and MP3 players.

For engineers reviewing the MAX6784TCC+ datasheet, MAX6784TCC+ pinout, MAX6784TCC+ application, or MAX6784TCC+ equivalent, this device delivers precise, noise-immune battery monitoring with guaranteed logic state down to VBATT = 1.05V, fixed hysteresis eliminating chattering, and ultra-low 5.7µA supply current at 1.8V.

Technical Context

The MAX6784TCC+ implements three independent comparators, each comparing an input voltage (IN1–IN3) against a precision 0.6085V internal reference. Its rising threshold is fixed at 0.6085V, while falling thresholds are factory-trimmed to 0.5477V for 10% hysteresis, enabling reliable low-battery detection across load transients.

It features a 0.6024V–0.6146V reference output (VREF) with ±15ppm/°C tempco and ≤1mA drive capability, used to set external divider ratios. All inputs exhibit ≤5nA leakage, ensuring minimal error in high-impedance sensing networks.

Key Specifications

Pinout & Package

MAX6784TCC+ is housed in a 12-pin TQFN-EP package (3mm × 3mm, 0.5mm pitch) with exposed pad connected to GND for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-level battery monitor applications.

Compared with MAX6784TCC+, MAX6785TCC+ offers identical monitoring precision but adds board-level design overhead for pull-up resistors, while TLV7033 increases component count and reduces accuracy-making MAX6784TCC+ optimal for compact, high-reliability triple-threshold systems.

Availability

MAX6784TCC+ is available at Aetrix Electronics and suitable for portable medical devices, MP3 players, and electronic toys requiring stable component supply with long-term lifecycle support and RoHS-compliant packaging.

Supply support for MAX6784TCC+ 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

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and consumer systems.

The MAX6782–MAX6790 family was engineered specifically for ultra-low-power, multi-threshold battery monitoring in space-constrained portable electronics-emphasizing accuracy, hysteresis control, and robustness across wide temperature ranges.

FAQ

What is the factory-set hysteresis value for MAX6784TCC+?

The "C" suffix in MAX6784TCC+ denotes factory-set 10% hysteresis, resulting in a falling threshold of 0.5477V and a fixed rising threshold of 0.6085V per channel. This configuration eliminates output chattering during battery voltage recovery and requires HADJ1–HADJ3 pins to be tied to GND for proper operation.

Does MAX6784TCC+ support operation below 1.6V battery voltage?

Yes-MAX6784TCC+ guarantees valid low-battery output logic states down to VBATT = 1.05V, though its electrical specifications (e.g., threshold accuracy, supply current) are fully characterized only from 1.6V to 5.5V. Operation at 1.05V–1.6V maintains functional output assertion but with relaxed parametric guarantees.

Can MAX6784TCC+ monitor voltages higher than its 5.5V maximum supply rating?

Yes-by powering the MAX6784TCC+ from a regulated auxiliary supply within 1.2V–5.5V while connecting the high-voltage battery to IN1–IN3 via external resistive dividers referenced to that auxiliary supply's ground, the device can safely monitor battery voltages exceeding 5.5V without violating absolute maximum ratings.

What is the purpose of the REF pin on MAX6784TCC+?

The REF pin on MAX6784TCC+ provides a stable 0.6085V reference (±15ppm/°C) used to set the resistor ratios for all three battery monitor inputs (IN1–IN3). It sources up to 1mA and requires no external bypass capacitor, but capacitive loading must remain below 50pF to maintain accuracy and stability.

How does MAX6784TCC+ handle reverse-battery conditions?

MAX6784TCC+ incorporates internal reverse-battery protection that prevents damage when the battery is inserted backward-provided IN1–IN3 are connected to the center node of resistive dividers between BATT and GND, with Thevenin impedance ≥1kΩ, and HADJ1–HADJ3 are tied to GND or referenced to REF.