STMicroelectronics TSC200IYDT

Overview

TSC200IYDT from STMicroelectronics is a high-side current sense amplifier with integrated open-drain comparator and 0.6 V internal reference, designed for automotive-grade overcurrent protection in systems with wide common-mode voltage range (–16 to +80 V) and supply voltage (2.7 to 18 V). It delivers 20 V/V gain, 1 MHz bandwidth, ±3.5 % total output error over temperature, and operates across –40 to +125 °C.

For engineers reviewing the TSC200IYDT datasheet, TSC200IYDT pinout, TSC200IYDT application, or TSC200IYDT equivalent, this device supports precise high- or low-side current monitoring in battery management, telecom power supplies, and industrial motor drives where rail-to-rail input operation and latchable fault detection are required.

Technical Context

The TSC200IYDT uses a dual-input-stage topology that dynamically selects between A1 (active at Vicm < 40% VCC) and A2 (active at Vicm > 40% VCC) amplifiers to maintain accuracy across its –16 to +80 V common-mode range. Its 0.6 V internal reference feeds a comparator with programmable threshold via external resistor divider and latching capability on CMPOUT.

It achieves 110 dB typical CMRR at 12 V common-mode and 100 µV/V supply voltage rejection, enabling stable sensing in noisy 12 V/24 V automotive and industrial rails. The open-drain CMPOUT supports pull-up to up to 18 V independent of VCC, and RESET pin provides active-low asynchronous latch reset.

Key Specifications

Pinout & Package

Supplied in SO8 package (ECOPACK2, RoHS-compliant, 1.27 mm pitch), with exposed pad for thermal performance. Pinout validated per DS13882 Rev 3 Figure 2 and Table 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current sensing applications.

Compared with INA240A1QDRQ1, TSC200IYDT trades minor bandwidth reduction for integrated comparator latching and reference-reducing BOM count and board space. Versus TSC201IYDT, it offers lower gain for improved dynamic range in high-current, low-Rsense applications where 20× scaling avoids ADC saturation.

Availability

TSC200IYDT is available at Aetrix Electronics and suitable for automotive battery management, telecom power supervision, and industrial motor drive protection requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSC200IYDT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, delivering silicon solutions for automotive, industrial, and power management applications with emphasis on reliability and AEC-Q100 compliance.

The TSC200IYDT belongs to ST's high-voltage current sense amplifier family, engineered specifically for robust overcurrent protection in harsh environments where wide common-mode tolerance, integrated fault signaling, and automotive qualification are mandatory.

FAQ

What is the maximum common-mode voltage the TSC200IYDT can withstand?

The TSC200IYDT supports a guaranteed common-mode input range of –16 V to +80 V across its entire operating temperature range (–40 to +125 °C), independent of supply voltage. Absolute maximum ratings extend to –18 V to +82 V, but functional operation is specified only within the –16 V to +80 V range per DS13882 Rev 3 Table 3.

Can the TSC200IYDT be used for low-side current sensing?

Yes - the TSC200IYDT supports both high-side and low-side configurations. In low-side mode, VIN– connects to ground and VIN+ connects to the shunt's load side. Its wide common-mode range accommodates ground-referenced sensing even with noisy return paths, and the 0.6 V internal reference remains valid for comparator threshold setting.

How does the RESET pin function in latch mode?

The RESET pin is active-low and asynchronously clears the comparator latch. When asserted (pulled below 1.1 V), it forces CMPOUT high-impedance (open-drain released), allowing the external pull-up to drive CMPOUT high. If left unconnected, the internal 2 MΩ pull-down holds RESET low, resulting in transparent (non-latching) comparator behavior.

What is the impact of input bias current on shunt resistor selection?

Input bias current ranges from ±0.5 µA to ±16 µA over temperature and common-mode voltage. For a 10 mΩ shunt at 100 A, bias current introduces ≤0.16 mV error - negligible versus 100 mV sense voltage. However, for sub-1 A sensing with ≥100 mΩ shunts, bias current may dominate offset; select Rsense so Vsense ≫ |Ibias × Rsense| to maintain accuracy.