LTC2941IMS8E#PBF

Introduction to LTC2941IMS8E#PBF
- LTC2941 is a small battery monitor/fuel gauge IC from Linear Technology (now Analog Devices) used for single-cell Li‑ion/Li‑poly packs. The IMS8E#PBF suffix denotes the Pb-free, RoHS-compliant version in an 8-pin MSOP package (IMS8E) with PEG-4 lead finish.
- What it does: real-time battery monitoring with coulomb counting, voltage sensing, and temperature sensing. It communicates with a host microcontroller via an I2C-compatible interface to report charge/discharge data, voltage, and temperature, and to support programmable thresholds/alerts.
- Key features: precision ADCs, programmable current/charge counters, temperature sensor, low quiescent current for portable devices, and a compact 8-pin package.
- Typical applications: battery-powered consumer electronics, portable devices, and power-management subsystems that need reliable fuel gauging and battery condition monitoring.
- Availability: orderable as LTC2941IMS8E#PBF, Pb-free, in MSOP-8 package.

Direct cross-references don’t exist for LTC2941IMS8E#PBF. It’s a single‑cell Li‑ion gas gauge with I2C. Closest substitutes are other vendors’ similar single‑cell gauges, e.g., TI BQ274xx family or Maxim MAX17043/45. For an exact replacement, consult Analog Devices for a recommended substitute based on your application.

Key features of LTC2941IMS8E#PBF (8‑pin MSOP, Pb‑free):
- Battery fuel gauge with coulomb counting
- Measures battery voltage and current via external sense resistor
- Internal charge accumulator with programmable update rate
- I2C interface for configuration and data readout
- Alarms/flag outputs for fault or low-battery conditions
- Low quiescent current; suitable for low-power/standby use
- Wide input range for single-cell Li‑ion/Li‑poly packs
- Small footprint; ideal for portable devices and compact designs

- Pin count: 8 pins (MSOP-8 package, IMS8E).
- Function: LTC2941 is a battery gas gauge with Coulomb counting for a single-cell Li‑ion/Li‑poly battery. It monitors battery voltage and current, tracks accumulated charge to estimate state of charge/capacity, and communicates via a two-wire I2C-like interface (SDA/SCL).

- Manufacturer: Analog Devices, Inc. (ADI). The LTC2941IMS8E#PBF originates from Linear Technology; Linear Technology was acquired by Analog Devices in 2017, and LTC parts are now under ADI.
- Company type: A global semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits, including power management, data converters, sensors, and signal conditioning solutions.

Applications areas of LTC2941IMS8E#PBF:
- Single-cell Li-Ion/Li-Pol battery-powered devices needing SOC and remaining-capacity estimation (coulomb counting)
- Portable consumer electronics (phones, cameras, handheld devices)
- Wearables and medical/fitness sensors
- IoT sensors, data loggers, and remote monitoring systems
- Battery-powered industrial instruments and handheld tools
- USB power banks and battery packs with integrated gauging
- Smart meters and energy-management modules

8-pin MSOP (Plastic Small Outline Package), MSOP-8. The #PBF suffix indicates Pb-free / RoHS-compliant.