Analog Devices Inc. LTM8062AEV#PBF

Overview

LTM8062AEV#PBF from Analog Devices (formerly Linear Technology) is a complete 32V-input, 2A µModule® battery charger IC with input voltage regulation for MPPT solar applications. It delivers constant-current/constant-voltage charging, supports Li-ion, LiFePO₄, and SLA batteries, features 0.75% float voltage reference accuracy, programmable float voltage up to 18.8V, and integrated input reverse voltage protection via internal Schottky diode - used in solar-powered remote telemetry systems.

For engineers reviewing the LTM8062AEV#PBF datasheet, LTM8062AEV#PBF pinout, LTM8062AEV#PBF application, or LTM8062AEV#PBF equivalent, key selection considerations include its 77-lead LGA package thermal performance (θJCbottom = 6.1°C/W), resistor-programmable VINREG-based MPPT tracking, NTC-based temperature fault detection, and dual termination modes (C/10 or timer-based).

Technical Context

The LTM8062AEV#PBF implements a fixed-frequency (0.85–1.15 MHz), average-current-mode step-down architecture with integrated power MOSFETs and Schottky diode. Its battery management controller includes preconditioning (300 mA at ADJ < 2.3 V), auto-restart on 2.5% float voltage drop, and dual-termination logic (C/10 threshold ≈200 mA or programmable timer).

Input voltage regulation is achieved via the VINREG pin, which monitors input through an external resistor divider and dynamically reduces charge current to maintain ≥2.7 V at VINREG - enabling peak power point tracking for solar panels. The NTC circuit disables charging if thermistor voltage falls outside 0.29 V–1.36 V (≈0°C–40°C), with ~5°C hysteresis per threshold.

Key Specifications

Pinout & Package

Package: 77-lead LGA (15 mm × 9 mm × 4.32 mm), RoHS-compliant, thermally enhanced with exposed bottom pad for PCB heat sinking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery charger applications.

Compared with LTM8062AEV#PBF, LTC4015IUHF#PBF offers greater configurability but demands system-level firmware integration, while BQ24650RGER reduces cost at the expense of missing MPPT, reverse protection, and NTC functions - making LTM8062AEV#PBF optimal for compact, self-contained solar-battery systems.

Availability

LTM8062AEV#PBF is available at Aetrix Electronics and suitable for solar power battery charging, industrial handheld instruments, and 12 V to 24 V automotive telematics requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for LTM8062AEV#PBF 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

Analog Devices (acquired Linear Technology in 2017) designs high-performance analog, mixed-signal, and power management ICs for precision, reliability, and integration.

The LTM8062/LTM8062A product line delivers fully integrated µModule battery chargers targeting high-input-voltage, space-constrained applications such as solar-powered edge devices and portable industrial equipment.

FAQ

What is the maximum programmable float voltage for LTM8062AEV#PBF?

The LTM8062AEV#PBF supports a maximum battery float voltage of 18.8 V, enabled by its LTM8062A variant designation. This is achieved using a resistor divider from BAT to GND, referenced to the 3.3 V ADJ pin. The LTM8062AEV#PBF datasheet specifies 19.3 V as the absolute maximum float voltage under test conditions, but 18.8 V is the guaranteed programmable limit for stable operation across temperature.

Does LTM8062AEV#PBF include input reverse voltage protection?

Yes, the LTM8062AEV#PBF integrates a high-voltage power Schottky diode between VINA and VIN. When VINA is used as the input connection, this diode blocks reverse current flow, protecting downstream circuitry. The forward voltage drop is 0.55 V at 2 A, as specified in the Electrical Characteristics table. No external diode is required if VINA is properly connected.

How does the LTM8062AEV#PBF implement MPPT for solar panels?

The LTM8062AEV#PBF implements MPPT via its VINREG pin: an external resistor divider from VIN to GND sets a target input voltage (e.g., solar panel V_MP). The charger dynamically reduces charge current to maintain ≥2.7 V at VINREG, thereby holding the panel near its peak power point. This analog servo loop requires no MCU or software - it is inherent to the LTM8062AEV#PBF's internal regulation architecture.

What termination methods does LTM8062AEV#PBF support?

The LTM8062AEV#PBF supports two independent termination methods: (1) C/10 current threshold (≈200 mA for 2 A setting), and (2) programmable end-of-charge timer via capacitor on the TMR pin. Both can be used simultaneously - the timer enables top-off beyond C/10, while the CHRG pin remains low until current drops below C/10, regardless of timer state.

Can LTM8062AEV#PBF charge LiFePO₄ batteries?

Yes, the LTM8062AEV#PBF is explicitly qualified for LiFePO₄ chemistry. Its 18.8 V maximum float voltage covers common 4S (14.4 V) and 5S (18.0 V) LiFePO₄ packs. The device's preconditioning mode (300 mA at low voltage), ±0.75% ADJ reference accuracy, and NTC-based thermal cutoff ensure safe, reliable charging per LiFePO₄ manufacturer specifications.