LTC2943IDD-1

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LTC2943IDD-1

IC BATT MONITOR MULTI-CHEM 8DFN

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規格

Package Tube
ProductStatus Obsolete
Function Battery Monitor
BatteryChemistry Multi-Chemistry
FaultProtection Over Current, Over Temperature, Over Voltage
Interface I²C
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-WFDFN Exposed Pad

概述

Description

The LTC2943IDD-1 is a single‑cell battery fuel gauge IC from Linear Technology (now Analog Devices). It provides coulomb counting with an I2C-compatible interface to track state of charge (SOC) and remaining capacity for Li‑ion/Li‑polymer cells. The device measures battery voltage, temperature, and current (via an external sense resistor), integrates the current over time, and outputs SOC estimates and status information. It offers programmable update rates, alarm/interrupt outputs, and calibration options to suit portable power management needs. The “-1” suffix denotes a specific package/version variant of the IC. Typical use cases include portable devices, battery packs, and power-management subsystems where accurate SOC indication is required. For exact electrical specs, register map, and package details, consult the LTC2943IDD-1 datasheet.

Features

Here are the core features of LTC2943IDD-1 (gas gauge/coulomb counter):
- Battery fuel gauge with bidirectional coulomb counter and SOC estimation
- I2C compatible serial interface for register access
- External current sense resistor for accurate current measurement
- Measures battery voltage and temperature (embedded sensor)
- Programmable update rate and programmable Coulomb counter resolution
- Low quiescent current with sleep/low-power modes for long battery life
- Suitable for Li-Ion/Li‑Polymer cells
- Wide operating supply: typically 2.7V to 5.5V
- Temperature range: -40°C to 125°C
- Small 8-pin package (IDD-1), suitable for compact designs
- Status/alert outputs for fault conditions
Note: For exact electrical specs (resistor ranges, current range, register map, timing, and pinout), please refer to the LTC2943 datasheet.

Package

LTC2943IDD-1 uses an 8-pin MSOP package (3×3 mm).

Pinout

- Pin count: 8 pins (8-pin package)
- Function: Battery gas gauge (coulomb counter) with I2C-compatible interface for a single-cell Li‑ion battery. It measures voltage, current (via sense resistor), tracks state of charge by coulomb counting, and provides temperature and status signals.

Manufacturer

Analog Devices, Inc. (ADI). ADI is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits. It acquired Linear Technology, the original designer of the LTC2943.

Application

Applications of LTC2943IDD-1:
- Single-cell Li‑ion/Li‑polymer battery fuel gauge with coulomb counting via I2C.
- Portable/handheld devices, wearables, medical instruments, and IoT sensors needing accurate SOC/runtime estimates.
- Battery-powered meters, data loggers, remote telemetry, and microcontroller-based backup power.
- Cordless tools and compact telecom/power-management subsystems requiring low quiescent current and small form factor.

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