TMCS1100A1QDRQ1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TMCS1100A1QDRQ1 is an AEC-Q100 automotive precision isolated current sensor from Texas Instruments with analog voltage output, surface-mount 4.9 mm × 3.9 mm package, and galvanic isolation for high-voltage battery current measurement in EV and HEV systems. From $2.80 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TMCS1100A1QDRQ1 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.4500(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precision galvanic isolation eliminates ground loops and protects low-voltage MCU circuits from high-voltage battery pack currents up to hundreds of amps
- AEC-Q100 Grade 1 automotive qualification ensures reliable operation from -40°C to 125°C in under-hood and battery management system environments
- Analog voltage bridge output enables direct connection to ADC inputs without additional signal conditioning for fast and simple current sensing integration
Applications
The TMCS1100A1QDRQ1 is designed for automotive battery current monitoring in electric vehicles (EV), hybrid electric vehicles (HEV), and 48V mild-hybrid systems where galvanic isolation between the high-voltage battery bus and the low-voltage control circuitry is mandatory. Its analog voltage output simplifies integration into battery management system (BMS) designs using standard microcontroller ADC inputs. The compact surface-mount package allows placement close to the current-carrying bus bar or shunt in motor inverter and on-board charger modules.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Body Breadth | 3.9mm |
| Body Height | 1.5mm |
| Body Length or Diameter | 4.9mm |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Output | BRIDGE |
| Output Type | ANALOG VOLTAGE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape/Style | RECTANGULAR |
| Screening Level | AEC-Q100 |
| Sensors/Transducers Type | CURRENT SENSOR |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TMCS1100A1QDRQ1:
Frequently Asked Questions
Why does TMCS1100A1QDRQ1 use galvanic isolation and what protection does it provide for MCU circuits in EV battery systems?
In electric vehicle battery packs operating at 400V to 800V, the high-voltage bus must be electrically isolated from the 5V or 3.3V microcontroller that reads the current. The TMCS1100A1QDRQ1's galvanic isolation provides at minimum 3 kV of dielectric isolation, preventing fault currents from damaging the MCU. Without isolation, any short or ground fault on the HV side would immediately expose the MCU and its connected electronics to lethal voltages.
What is the output type of TMCS1100A1QDRQ1 and how does it simplify integration with a battery management system ADC?
The TMCS1100A1QDRQ1 provides an analog voltage bridge output proportional to the sensed current, centered at a mid-supply reference for bidirectional measurement. This voltage signal can be directly wired to a 12-bit or 16-bit ADC input on the BMS microcontroller without requiring a transimpedance amplifier or analog-to-digital front end. At a 3.3V ADC reference the output spans approximately 0V to 3.3V for full-scale positive and negative current, delivering straightforward conversion with a simple linear scaling factor.
What automotive qualification does TMCS1100A1QDRQ1 carry and what temperature range does it cover for under-hood deployment?
The TMCS1100A1QDRQ1 is AEC-Q100 qualified for automotive Grade 1 operation, covering -40°C to 125°C. The AEC-Q100 testing includes high-temperature operating life at 125°C, thermal shock between -40°C and 125°C, and ESD testing to automotive levels. This qualification makes it suitable for deployment in under-hood battery management modules, motor inverter control boards, and on-board chargers where ambient temperature regularly exceeds 85°C.
How does TMCS1100A1QDRQ1 compare to a shunt resistor current sense approach in a 400V EV battery current measurement application?
A shunt resistor approach at 400V requires additional isolated amplifiers or optocouplers to bring the sense signal across the isolation barrier, adding at least 2 to 3 components and increasing BOM cost and board area. The TMCS1100A1QDRQ1 integrates the isolation and analog output amplification in a single 4.9 mm × 3.9 mm SMD package, reducing the isolated measurement chain to one device. The shunt approach also dissipates I²R power in the shunt element, while the Hall-effect based TMCS1100 adds no series resistance and produces negligible insertion loss in the current path.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $3.2645 | $326.45 |
| 500+ | $2.6600 | $1330.00 |
| 1000+ | $2.5700 | $2570.00 |
| 2500+ | $2.4500 | $6125.00 |
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