TMCS1101A3UQDRQ1

TMCS1101A3UQDRQ1 is a Texas Instruments current-sense monitor IC in a QFN package. It is used to measure current through a sense resistor and provide a usable output signal for protection and control in power electronics (e.g., DC-DC converters, motor drives, battery systems). The “A” indicates automotive-grade, and the “QDRQ1” part of the suffix relates to packaging/reel/qualification details.
Key points:
- Monitors current via a sense resistor and outputs a proportional signal (with optional fault/diagnostic feedback).
- Designed for single-supply operation and automotive/industrial environments.
- Integrates the sensing amplifier and output stage to simplify PCB design and protection schemes.
- Suitable for overcurrent protection, current monitoring, and regulator feedback.
For exact electrical specs (supply range, sense resistor range, gain, output format, fault thresholds, temperature range) and the pinout, refer to the TMCS1101A datasheet and TI product page. If you want, I can summarize the specific figures from the datasheet.

I don’t have the TMCS1101A3UQDRQ1 package type in my offline data. Please provide the datasheet or allow me to look it up online and I’ll confirm the exact package (e.g., QFN, WSON, SOT, etc.).

Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog, mixed‑signal and embedded‑processing integrated circuits (power management, sensors, microcontrollers, drivers, etc.) for automotive, industrial, consumer and commercial markets.

TMCS1101A3UQDRQ1 is used for galvanically isolated current sensing in:
- Automotive/EV power electronics (motor drives, battery management systems)
- Industrial motor control and power conversion (inverters, drives, UPS)
- Power supplies and energy metering (isolated feedback for DC/DC, AC/DC)
- General high-common-mode current sensing in high-voltage environments (fault detection, protection)
(Suitable for any application needing isolated current measurement with shunt sensing.)

I can’t find TMCS1101A3UQDRQ1 in my data. Please share the datasheet or the chip’s function and key specs (interface, supply, package). With that I can list drop‑in equivalents. Meanwhile try distributor parametric search (Digi‑Key/Mouser) or the manufacturer’s cross‑reference tool.