STMicroelectronics TSC202IST

Overview

TSC202IST from STMicroelectronics is a high-side current sense amplifier with integrated open-drain comparator and 0.6 V internal reference, designed for overcurrent protection in automotive and industrial power rails. It delivers 100 V/V gain, supports -16 to +80 V common-mode input voltage, operates from 2.7–18 V supply, and is AEC-Q100 qualified for automotive use up to +125 °C.

For engineers reviewing the TSC202IST datasheet, TSC202IST pinout, TSC202IST application, or TSC202IST equivalent, this device is selected for high-voltage, high-accuracy analog current monitoring where latchable fault detection, wide common-mode range, and temperature-stable offset (< ±3.5 mV) are critical design requirements.

Technical Context

The TSC202IST uses a dual-input-stage architecture (A1/A2 amplifiers) that automatically selects operation mode based on input common-mode voltage relative to VCC - active A2 when VICM > 40% VCC, A1 when VICM < 40% VCC - enabling stable performance across -16 V to +80 V. Its 0.6 V reference feeds a comparator with programmable threshold via external resistor divider and latching capability.

It achieves 100–120 dB CMRR over full temperature range (-40 to +125 °C), 3.5% max total output error (gain + offset), and 1 MHz bandwidth at G = 100, with quiescent current ≤1.8 mA. The comparator features 0.3 µs response time, 586–625 mV trip threshold, and 140–300 mV VOL at 2.35 mA sink.

Key Specifications

Pinout & Package

Supplied in SO8 package (4.9 mm × 3.9 mm, 1.27 mm pitch), RoHS-compliant, with exposed pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA240A1IDR and MAX40056ATA+T, the TSC202IST uniquely integrates latchable comparator and 0.6 V reference in a single SO8 package, reducing component count and PCB area for automotive and industrial OCP systems requiring hardware-enforced fault holdoff.

Availability

TSC202IST is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial motor drive protection, telecom 48 V power shelf supervision, and programmable power supply overcurrent protection requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSC202IST 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, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and power management applications.

The TSC202IST belongs to ST's high-voltage current sense amplifier product line, engineered specifically for robust overcurrent protection in harsh environments where wide common-mode range, AEC-Q100 compliance, and integrated fault latching are mandatory.

FAQ

What is the maximum common-mode voltage the TSC202IST can handle?

The TSC202IST supports a guaranteed common-mode input voltage range of -16 V to +80 V across its VIN+ and VIN− pins, independent of supply voltage. This is validated per DS13882 Rev 3 Table 3, enabling direct connection to 48 V telecom rails and automotive battery systems without external level-shifting circuitry.

How does the latching comparator function, and how is it reset?

The comparator output remains latched low after an overcurrent event until the active-low RESET pin receives a minimum 0.1 µs low pulse. The RESET pin has an internal 2 MΩ pull-down; if left unconnected, the comparator operates transparently without latching. Latch behavior is confirmed in DS13882 Section 5.1 and Table 5.

Can the TSC202IST be used for low-side current sensing?

Yes - the TSC202IST supports both high-side and low-side configurations. In low-side mode, VIN− connects to system ground and VIN+ connects to the shunt's load side. Its wide common-mode range (-16 to +80 V) and rail-to-rail output ensure accurate measurement even with ground-referenced shunts in noisy industrial environments.

What is the impact of input common-mode voltage on accuracy?

Accuracy varies slightly across the common-mode range due to internal amplifier mode transition at VICM ≈ 40% VCC. Input offset voltage shifts up to ±500 µV at the transition point (DS13882 Figure 35), but total output error remains within ±3.5% across -40 to +125 °C per Table 4, making it suitable for most automotive and industrial applications.