LTC6803IG-3#PBF

LTC6803IG-3#PBF is the Pb-free version of Linear Technology’s (now Analog Devices) LTC6803-3, a 3-channel battery-monitor IC for Li‑ion packs. It is used in 3S battery packs to jointly monitor the voltages of up to three cells and to drive external cell-balancing transistors as part of a multi-cell battery-management system (BMS). The device communicates with a host microcontroller via a serial interface and can be daisy-chained with other LTC680x devices to monitor larger packs. It provides protection features such as over/under-voltage detection and supports integration with pack sensors (temperature, etc.) depending on the exact design. The “IG” suffix denotes a lead-free package variant, and “-PBF” indicates Pb-free packaging. In short, it’s a compact, 3-cell monitoring block intended for use in small to medium 3S battery packs within BMS applications. For exact pinout, electrical specs, and timing, refer to the LTC6803-3/ datasheet.

Here are the core features of LTC6803IG-3#PBF (lead-free package):
- 3-channel battery cell voltage monitor for Li‑ion packs (reads V1–V3) plus pack voltage readback.
- High‑impedance, high‑common‑mode-range inputs suitable for monitoring cells in series.
- SPI‑like serial interface (clock, data in/out) for host MCU; supports daisy‑chain configurations for long cell stacks.
- Continuous monitoring with configurable conversion timing and low quiescent current.
- Fault detection and reporting: open‑wire/short‑circuit detection, undervoltage/overvoltage sensing with status flags.
- Lightweight, compact Pb‑free package suitable for compact battery packs.
- Wide operating temperature range (typical for automotive/industrial grade devices).
- No external reference needed for basic operation; integrates with external microcontroller for data handling.
Note: This summary covers high‑level features; for exact electrical specs (voltage range, accuracy, timing, package pinout), please refer to the LTC6803 data sheet for the -3 variant and the IG/PBF packaging details.

LTC6803IG-3#PBF is in a 16‑pin TSSOP (Thin Shrink Small Outline) package, Pb-free (PBF).

- Pin count: 16 pins (in a plastic package such as SOIC-16/TSSOP-16; PBF indicates lead-free).
- Function: LTC6803IG-3 is a 3-cell battery monitor IC. It measures the voltages of up to 3 series cells and provides a serial (SPI-like) interface to a host microcontroller for cell data. It does not include internal active balancing.

Manufacturer: Analog Devices, Inc. (AD), formerly Linear Technology Corporation.
Company type: A semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits.

Designed for monitoring and protection of 3-cell Li‑ion/LiFePO4 packs in battery‑management systems. Typical applications:
- Automotive: EV/HEV and 12V packs
- Energy storage: residential/commercial, solar/wind
- UPS and telecom backup power
- Industrial/portable equipment: tools, robotics, etc.
Features in use: cell-voltage monitoring, safety protections, and passive balancing for 3‑cell packs in BMS implementations.

There isn’t an exact drop-in equivalent to LTC6803IG-3#PBF. Closest cross-references:
- TI BQ76920 / BQ76930 / BQ76940 family (multi-cell monitors; 3–15 cells)
- Renesas ISL94202 / ISL94203 (3–8 cells with protection)
Other vendors offer similar multicell monitors; verify cell count, interface (SPI-like), and protection features for your design. For exact replacement, contact Analog Devices/Linear Technology.