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

STMicroelectronics TSC101BIYLT

Name: TSC101BIYLT
Brand: STMicroelectronics
SKU: TSC101BIYLT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSC101BIYLT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: TSC101BIYLT.pdf

Description:: IC CURR SENSE 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:3,670

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Product details

Overview

TSC101BIYLT from STMicroelectronics is an automotive-grade high-side current sense amplifier with fixed 50 V/V gain, operating over 4–24 V supply and 2.8–30 V input common-mode range, surviving up to 60 V load-dump transients, and consuming ≤300 µA quiescent current in SOT23-5 package for precision battery charger and DC motor control monitoring.

For engineers reviewing the TSC101BIYLT datasheet, TSC101BIYLT pinout, TSC101BIYLT application, or TSC101BIYLT equivalent, this device supports ground-referenced output voltage proportional to high-side shunt voltage drop under wide supply–common-mode independence, low-offset operation (±0.9 mV max), and AEC-Q100 qualified thermal stability (−40°C to +125°C).

Technical Context

The TSC101BIYLT implements a precision current-sense architecture with independent V_CC and input common-mode voltage domains, enabling high-side sensing at voltages far exceeding the supply rail-critical for automotive 12 V/24 V systems with load-dump transients. Its internal resistor-ratio gain network (50 V/V) eliminates external component dependency while maintaining ±4.5% total output accuracy across temperature.

It features 90–105 dB common-mode rejection (CMR) and supply-voltage rejection (SVR), 0.4 mV/°C output drift, and 6 µs settling time to 1% for 10–100 mV step inputs into 47 pF load-optimized for closed-loop current feedback in photovoltaic charge controllers and notebook power management.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	50 V/V fixed-enables direct scaling of 20 mV shunt drop to 1 V output without calibration.
Input Offset Voltage	±0.9 mV max (−40°C to +125°C)-limits current measurement error to ≤18 µA on 50 mΩ shunt.
Common-Mode Range	2.8–30 V operating / −0.3–60 V survival-supports 12 V automotive bus with ISO 7637-2 load-dump immunity.
Supply Voltage Range	4–24 V-allows direct connection to battery or regulated rail without LDO buffering.
Quiescent Current	300 µA max-enables always-on monitoring in low-power battery systems.
Output Accuracy	±4.5% at 50 mV sense input-guarantees <±2.25 mV absolute error for microcontroller ADC interfacing.
Settling Time	6 µs to 1% (C_L = 47 pF)-ensures fast response for overcurrent protection in motor drives.

Pinout & Package

SOT23-5L plastic package (ECOPACK® compliant), 1.45 mm max height, 2.90 mm × 2.80 mm footprint, thermal resistance R_thJA = 250 °C/W.

Pin/Terminal	Circuit Role	Design Meaning
Vp	Analog input (high-side)	Connects to shunt resistor's load-side terminal; withstands up to 60 V transient.
Vm	Analog input (low-side)	Connects to shunt resistor's source-side terminal; referenced to Gnd for differential sensing.
Gnd	Power ground	Return path for supply and output stage; must be low-impedance to minimize offset error.
Vcc	Positive supply	Independent of Vp/Vm common-mode; powers internal amplifier and buffer stages.
Out	Analog output	Buffered, rail-to-rail capable output delivering 50×(Vp−Vm); sinks up to 60 mA short-circuit current.

Key Features

Feature	Design Value
AEC-Q100 qualified	Automotive-grade reliability with −40°C to +125°C operation and advanced screening per Q001/Q002.
Load-dump tolerant	Withstands 60 V absolute maximum common-mode voltage-meets ISO 7637-2 Pulse 5a requirements.
Supply–common-mode independence	Enables Vcc = 5 V while sensing 24 V bus current-eliminates level-shifting circuitry.
Low-offset, low-drift architecture	±0.9 mV max Vos and 0.4 mV/°C ΔVout/ΔT ensure stable current readout across vehicle thermal zones.
Integrated gain resistor network	Fixed 50 V/V ratio removes external gain-setting components and associated tolerance/temperature drift.

Applications

Automotive Battery Monitoring

Photovoltaic Charge Controller

Use Scenario: Real-time monitoring of 12 V starter battery charge/discharge current in engine start-stop systems.

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

Use Value: Enables accurate state-of-charge estimation using ≤300 µA quiescent current and −40°C to +125°C operation without external gain calibration.

Use Scenario: Measuring panel-to-battery charging current in off-grid solar systems with variable PV voltage (up to 30 V).

IC Role / Device Role / Timing Role: High-side current sensor interfacing between MPPT controller and battery bank, rejecting common-mode ripple.

Use Value: 90–105 dB CMR suppresses PWM switching noise; 6 µs settling supports fast MPPT loop updates.

DC Motor Overcurrent Protection

Notebook Power Delivery

Use Scenario: Detecting stall or short-circuit conditions in 24 V brushed DC motors used in automotive HVAC actuators.

IC Role / Device Role / Timing Role: Fast-response current monitor feeding comparator or MCU interrupt for sub-10 µs fault shutdown.

Use Value: 6 µs 1% settling and 60 mA sink capability allow direct drive of protection logic without external buffers.

Use Scenario: Precision current sensing in USB-C PD power delivery circuits where 5–20 V bus voltage exceeds system supply rails.

IC Role / Device Role / Timing Role: High-side sense amplifier providing isolated current feedback to PD controller with minimal board space.

Use Value: SOT23-5 footprint and supply–common-mode independence eliminate need for isolated amplifiers or level shifters.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4080TASA+	50 V/V gain, 2.7–76 V common-mode, 125 µA I_CC, SO8 package	Wider common-mode but larger footprint; no AEC-Q100 qualification	Select for industrial systems requiring >30 V common-mode with lower quiescent current.
INA240A1QDRQ1	20 V/V gain, −4–80 V common-mode, 2.4 mA I_CC, SO8 package, AEC-Q100	Higher supply current and lower gain; superior ESD (±4 kV HBM)	Select when higher common-mode survival (80 V) and robustness outweigh gain flexibility and power budget.

Compared with MAX4080TASA+ and INA240A1QDRQ1, the TSC101BIYLT offers optimal balance of AEC-Q100 compliance, ultra-low quiescent current (300 µA), compact SOT23-5 size, and precise 50 V/V gain-making it ideal for space-constrained automotive and portable power applications where supply efficiency and thermal margin are critical.

Availability

TSC101BIYLT is available at Aetrix Electronics and suitable for automotive battery monitoring, photovoltaic charge control, DC motor overcurrent protection, and notebook power delivery requiring stable component supply across extended temperature and high-reliability environments.

Supply support for TSC101BIYLT 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 microcontrollers, power ICs, sensors, and analog products for automotive, industrial, and consumer markets.

The TSC101 belongs to ST's high-precision current sense amplifier product line, engineered specifically for robust, low-power, high-common-mode monitoring in automotive and renewable energy systems where reliability under electrical stress is mandatory.

FAQ

What is the maximum common-mode voltage the TSC101BIYLT can survive during load-dump events?

The TSC101BIYLT survives up to 60 V common-mode voltage under absolute maximum ratings, meeting ISO 7637-2 Pulse 5a load-dump requirements for 12 V automotive systems. This rating applies to both Vp and Vm pins referenced to Gnd, with no current flow through the device during transient events.

Does the TSC101BIYLT require external gain-setting resistors?

No. The TSC101BIYLT integrates a precision resistor network that fixes its gain at 50 V/V. This eliminates external components, reduces PCB area, and avoids gain errors from resistor tolerance and temperature drift-confirmed by ±4.5% total output accuracy over temperature and supply variation.

Can the TSC101BIYLT operate with Vcc = 3.3 V?

No. The minimum specified supply voltage is 4.0 V across the full operating temperature range. At 3.3 V, the internal amplifier and output buffer may not function reliably, and key parameters-including gain accuracy, offset, and CMR-are not guaranteed per datasheet specifications.

How does the TSC101BIYLT handle reverse current detection?

The TSC101BIYLT outputs a voltage proportional to (Vp − Vm). When current reverses, Vp < Vm, resulting in negative differential input and corresponding negative output voltage down to −1 V (within absolute maximum ratings). Its buffered output can sink up to 60 mA, enabling direct interface with comparators or MCU ADCs configured for bipolar input ranges.

TSC101BIYLT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Current Sense

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 0.9V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 670 kHz

Current - Input Bias:: 5.5 µA

Voltage - Input Offset:: 200 µV

Current - Supply:: 165µA

Current - Output / Channel:: 60 mA

Voltage - Supply Span (Min):: 4 V

Voltage - Supply Span (Max):: 24 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

TSC101BIYLT FAQ

1.How can I place an order for TSC101BIYLT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSC101BIYLT 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 TSC101BIYLT reliable?

The price and inventory of TSC101BIYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC101BIYLT is usually 5 days.

3.What payment methods are accepted for TSC101BIYLT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC101BIYLT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSC101BIYLT?

TSC101BIYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSC101BIYLT 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 TSC101BIYLT?

For technical support, including TSC101BIYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC101BIYLT requirements.

6.How does Aetrix verify that TSC101BIYLT is sourced from the original manufacturer or authorized distributors?

All TSC101BIYLT 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 TSC101BIYLT meets industry standards.

7.What is the process for return or replacement of TSC101BIYLT?

All TSC101BIYLT units undergo pre-shipment inspection (PSI). If there is an issue with TSC101BIYLT, 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 TSC101BIYLT part is unused and in its original packaging.

Return procedure for TSC101BIYLT:

1.Submit a request within 90 days.

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

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