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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSC103IPT

Name: TSC103IPT
Brand: STMicroelectronics
SKU: TSC103IPT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSC103IPT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: TSC103IPT.pdf

Description:: IC CURR SENSE 1 CIRCUIT 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:17,760

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Product details

Overview

TSC103IPT from STMicroelectronics is a high-voltage, high-side current sense amplifier with independent supply and input common-mode voltage domains. It delivers pin-selectable gains of 20/25/50/100 V/V, operates from 2.7–5.5 V supply, supports 2.9–70 V common-mode range (single-supply), and consumes ≤360 µA quiescent current. It enables precision current monitoring in automotive battery management and DC motor control systems.

For engineers reviewing the TSC103IPT datasheet, TSC103IPT pinout, TSC103IPT application, or TSC103IPT equivalent, key selection criteria include its ±500 µV input offset voltage, 90–105 dB DC CMRR, 700 kHz bandwidth, ±16 V to +75 V survival range under reversed-battery/load-dump conditions, and TSSOP8 packaging for space-constrained high-voltage sensing.

Technical Context

The TSC103IPT implements a precision current-sense architecture with fully differential input stage and buffered output, enabling accurate amplification of small shunt voltage drops (±20 mV max) while rejecting high common-mode voltages up to 70 V. Its dual-supply capability (Vcc+/Vcc−) allows common-mode shifting down to −2.1 V when Vcc− = −5 V.

Gain selection is implemented via two digital inputs (SEL1/SEL2), configuring internal resistor ratios to deliver exact 20/25/50/100 V/V transfer functions without external components. Input bias current remains below 15 nA across temperature, minimizing error in high-impedance shunt networks.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7–5.5 V single-supply; enables direct interface with 3.3 V/5 V microcontrollers and ADCs.
Common-Mode Range	2.9–70 V (single-supply); supports direct sensing on 12 V/24 V/48 V battery rails without level-shifting.
Gain Options	20/25/50/100 V/V (pin-selectable); provides scalable full-scale output for 5–100 mV shunt drops.
Input Offset Voltage	±500 µV (typ), ±1100 µV (max); ensures <±0.5% error at 50 mV sense voltage with 50 V/V gain.
Quiescent Current	≤360 µA (max); minimizes power loss in always-on battery monitoring and UPS applications.
CMRR	90–105 dB (DC); rejects noise from switching regulators and high-dV/dt bus transients.
Bandwidth	700 kHz (3 dB, Av=50 V/V); supports real-time current feedback in PWM motor control loops.

Pinout & Package

TSC103IPT is housed in a thermally enhanced, RoHS-compliant TSSOP8 package (4.4 mm × 3.0 mm, 0.65 mm pitch), optimized for high-density PCB layouts and industrial temperature operation (−40 °C to +125 °C).

Pin/Terminal	Circuit Role	Design Meaning
1 – SEL2	Digital gain select input	Configures gain with SEL1; logic high/low sets one of four precise internal gain ratios.
2 – Vm	High-side shunt return node	Connects to low-side of sense resistor; referenced to Vcc− in dual-supply mode.
3 – SEL1	Digital gain select input	Paired with SEL2 to select 20/25/50/100 V/V; compatible with 3.3 V/5 V GPIO.
4 – Out	Analog output	Buffered, ground-referenced voltage proportional to (Vp−Vm)×Av; drives ADCs directly.
5 – Vcc+	Positive supply rail	Accepts 2.7–5.5 V; independent of input common-mode voltage domain.
6 – Gnd	Signal reference	Ground return for SEL pins, output buffer, and internal circuitry; not tied to shunt ground.
7 – Vcc−	Negative supply rail	Enables dual-supply operation; shifts common-mode range down to −2.1 V when set to −5 V.
8 – Vp	High-side shunt input node	Connects to high-side of sense resistor; withstands up to +75 V relative to Vcc−.

Key Features

Feature	Design Value
Reversed-battery survivability	Withstands −16 V on Vp/Vm (relative to Vcc−), enabling robust automotive cold-crank and jump-start protection.
Load-dump tolerance	Survives +75 V transient on Vp/Vm, meeting ISO 7637-2 Pulse 5a requirements for 24 V systems.
Low input leakage	≤1 µA input leakage at Vcc = 0 V; preserves battery charge in standby monitoring circuits.
Output short-circuit protection	Delivers 15–26 mA sink/source current; prevents latch-up during overcurrent fault detection.
Thermal performance	R_thJA = 120 °C/W (TSSOP8); sustains full performance at 125 °C ambient with minimal derating.

Applications

Automotive Battery Monitoring

Industrial DC Motor Control

Use Scenario: Real-time monitoring of 12 V/24 V lead-acid or Li-ion battery pack current during charge/discharge cycles in EV auxiliary systems.

IC Role / Device Role / Timing Role: High-side current sense amplifier translating shunt voltage to ground-referenced analog output for MCU ADC sampling.

Use Value: Enables ±0.5% current accuracy over −40 °C to +125 °C using 50 V/V gain and 1 mΩ shunt, supporting ASIL-B functional safety diagnostics.

Use Scenario: Closed-loop current feedback in 48 V BLDC motor drives for HVAC blowers and power steering assist modules.

IC Role / Device Role / Timing Role: High-bandwidth (700 kHz) current sensor interfacing between motor phase shunt and PWM controller's current loop.

Use Value: Delivers <1 µs gain-switching response (t_SEL) and <6 µs settling (t_s, Av=50 V/V), enabling fast overcurrent shutdown within 10 µs.

Photovoltaic String Monitoring

Uninterruptible Power Supply (UPS)

Use Scenario: Per-string current measurement in commercial solar inverters with 60–1000 V DC link voltage.

IC Role / Device Role / Timing Role: High-common-mode amplifier isolating string current signal from floating PV array potential.

Use Value: Operates reliably at 70 V common-mode with <360 µA supply current, reducing self-heating and enabling dense multi-channel monitoring.

Use Scenario: Bidirectional battery current sensing in online double-conversion UPS systems during AC/DC and DC/AC modes.

IC Role / Device Role / Timing Role: Dual-supply configured (Vcc+ = 5 V, Vcc− = −5 V) current monitor handling ±2.1 V to +65 V common-mode swing.

Use Value: Maintains ±1100 µV max offset drift over temperature, ensuring <±1% full-scale error across 0–100% load transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A1IDR	Fixed 20 V/V gain; higher 120 dB CMRR; 2.7–5.5 V supply; SOIC-8 package.	Lacks pin-selectable gain; requires external resistors for scaling; better for ultra-high-noise immunity but less flexible gain tuning.	Select when fixed gain and maximum CMRR outweigh need for programmable scaling in cost-sensitive industrial designs.
MAX4080FASA+	Fixed 100 V/V gain; 2.7–76 V common-mode; 3.3 V/5 V supply; SOIC-8; integrated reference.	No gain selection; includes internal 2.5 V reference for ratiometric ADC use; wider common-mode but no dual-supply mode.	Prefer when system uses ratiometric ADC and requires single-gain, wide-V_CM solution without external reference.

Compared with INA240A1IDR and MAX4080FASA+, the TSC103IPT uniquely combines pin-selectable gain, dual-supply configurability, and −16 V to +75 V fault survivability in TSSOP8-making it optimal for automotive and industrial systems requiring field-programmable sensitivity and reverse-polarity resilience.

Availability

TSC103IPT is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial DC motor control, photovoltaic string monitoring, and uninterruptible power supply applications requiring stable component supply across extended temperature and high-reliability environments.

Supply support for TSC103IPT 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 innovative silicon solutions for automotive, industrial, and power management markets.

The TSC103 belongs to ST's high-voltage precision analog portfolio, engineered specifically for robust, high-accuracy current sensing in harsh automotive and industrial environments where supply independence, fault tolerance, and thermal stability are critical.

FAQ

What is the maximum common-mode voltage the TSC103IPT can withstand during transient events?

The TSC103IPT survives −16 V to +75 V on Vp and Vm pins relative to Vcc−, covering ISO 7637-2 Pulse 5a load-dump (up to +75 V) and reversed-battery (down to −16 V) conditions in 12 V/24 V automotive systems. This rating applies under no-power and powered states per absolute maximum ratings table.

How does the dual-supply configuration extend the common-mode operating range?

In dual-supply mode (Vcc− disconnected from GND and biased negatively), the common-mode range shifts downward by the magnitude of Vcc−. For example, with Vcc+ = 5 V and Vcc− = −5 V, the operating range becomes −2.1 V to +65 V - enabling sensing below ground in bidirectional current applications like UPS inverters and regenerative braking.

Can the TSC103IPT drive an ADC input directly without external buffering?

Yes - the buffered output delivers rail-to-rail swing (within 85–135 mV of rails) with ≤1.5 mV/mA load regulation and 15–26 mA short-circuit current, allowing direct connection to SAR or sigma-delta ADCs with input impedances ≥10 kΩ. No external op-amp buffer is required for typical 12–16 bit converters.

What is the impact of gain selection on bandwidth and accuracy?

Bandwidth decreases with increasing gain: 700 kHz at 50 V/V, ~350 kHz at 100 V/V. Accuracy degrades slightly at lower Vsense - e.g., total output error is ±2.5% at 50 mV input but ±10% at 5 mV input (Av = 100 V/V). Designers should match gain to expected shunt voltage range to optimize SNR and linearity.

TSC103IPT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Current Sense

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 0.6V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 700 kHz

Current - Input Bias:: 10 µA

Voltage - Input Offset:: 500 µV

Current - Supply:: 200µA

Current - Output / Channel:: 26 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

TSC103IPT FAQ

1.How can I place an order for TSC103IPT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSC103IPT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TSC103IPT reliable?

The price and inventory of TSC103IPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC103IPT is usually 5 days.

3.What payment methods are accepted for TSC103IPT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC103IPT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSC103IPT?

TSC103IPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSC103IPT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TSC103IPT?

For technical support, including TSC103IPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC103IPT requirements.

6.How does Aetrix verify that TSC103IPT is sourced from the original manufacturer or authorized distributors?

All TSC103IPT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSC103IPT meets industry standards.

7.What is the process for return or replacement of TSC103IPT?

All TSC103IPT units undergo pre-shipment inspection (PSI). If there is an issue with TSC103IPT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TSC103IPT part is unused and in its original packaging.

Return procedure for TSC103IPT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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