STMicroelectronics TSC201IDT

Overview

TSC201IDT 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 50 V/V gain, operates from -16 V to +80 V common-mode input range, supports 2.7–18 V supply, and maintains ≤3.5% total output error across -40 °C to +125 °C - used in battery management systems for real-time shunt-based current monitoring.

For engineers reviewing the TSC201IDT datasheet, TSC201IDT pinout, TSC201IDT application, or TSC201IDT equivalent, this page provides verified electrical specifications, SO8 package layout, functional role in high-voltage current sensing, and validated alternatives for AEC-Q100-compliant designs requiring latchable fault detection.

Technical Context

The TSC201IDT employs a dual-input-stage topology (A1/A2 amplifiers) that automatically selects operation mode based on VIN+ common-mode voltage relative to VCC: Mode 1 activates when VICM > 40% VCC (enabling higher CMRR ≥120 dB), Mode 2 engages when VICM < 40% VCC (supporting negative rail sensing down to -16 V). This architecture avoids traditional instrumentation amp matching constraints while maintaining ±0.5 µV/°C offset drift and 1 MHz bandwidth at G = 50.

Its comparator integrates a 0.6 V reference, 586–625 mV trip threshold with 9 mV hysteresis, latching capability via active-low RESET, and open-drain CMPOUT compatible with pull-up voltages up to 18 V - enabling direct interface with microcontroller GPIOs or external logic without level-shifting.

Key Specifications

Pinout & Package

Supplied in SO8 (Small Outline Integrated Circuit, 150 mil width) package with standard 1.27 mm pitch, RoHS-compliant, and rated for 125 °C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA240A1QDRQ1 and MAX40056ATA+T, the TSC201IDT uniquely combines AEC-Q100 qualification, built-in latching comparator, and seamless -16 V to +80 V operation - making it optimal for automotive and industrial systems where fault persistence and reverse-polarity resilience are mandatory design requirements.

Availability

TSC201IDT is available at Aetrix Electronics and suitable for automotive battery management, 48 V telecom power supplies, and industrial motor drive protection requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSC201IDT 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, delivering silicon solutions for automotive, industrial, and power management applications.

The TSC201IDT 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, latchable fault signaling, and AEC-Q100 compliance are essential.

FAQ

What is the minimum shunt voltage the TSC201IDT can accurately measure?

The TSC201IDT is specified for accurate operation above 20 mV differential input (VSense). Below this threshold, output error increases significantly due to reduced transconductance in the internal current mirror - resulting in up to 0.4 V output offset at VSense = 0 mV. For sub-20 mV sensing, alternative devices with lower offset or higher gain are recommended.

How does the TSC201IDT handle common-mode voltage transitions near 40% of VCC?

At VICM ≈ 40% VCC, the device switches between internal amplifiers A1 and A2. This transition causes a measurable step in input offset voltage (up to ±500 µV), visible in Figure 35 of the datasheet. System designs should avoid steady-state operation precisely at this boundary; instead, select shunt and supply values to ensure VICM remains clearly in Mode 1 (>40% VCC) or Mode 2 (<40% VCC).

Can the CMPOUT pin be pulled up to a voltage higher than VCC?

Yes. The CMPOUT pin is an open-drain output rated for up to 18.3 V, and its pull-up voltage may exceed VCC - e.g., pulling CMPOUT to 24 V while VCC = 12 V is permitted per Absolute Maximum Ratings (Table 2). This allows direct interfacing with higher-voltage logic families without level shifters.

Is the 0.6 V internal reference accessible externally for other circuitry?

No. The 0.6 V reference is internally connected only to the comparator's non-inverting input (CMPIN) and is not brought out to a dedicated pin. It cannot be used as a general-purpose reference for external ADCs or other analog blocks - external precision references must be added if needed elsewhere in the system.