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STMicroelectronics TSC202IYST
- Part No.:
- TSC202IYST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSC202IYST.pdf
- Description:
- MSOP/TSSOP 8 BODY3.00 PITCH0.65
- Quantity:
- Payment:
- Shipping:
Inventory:1,999
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Product details
Overview
TSC202IYST from STMicroelectronics is a high-side/low-side current sense amplifier with integrated open-drain comparator and 0.6 V internal reference, delivering 100 V/V fixed gain, -16 to +80 V common-mode input range, and ±3.5 % total output error over -40 to +125 °C - used in automotive battery monitoring and telecom power rail protection.
For engineers reviewing the TSC202IYST datasheet, TSC202IYST pinout, TSC202IYST application, or TSC202IYST equivalent, key selection criteria include its AEC-Q100 qualification, latchable comparator for overcurrent fault capture, SO8 package compatibility, and guaranteed performance across 2.7–18 V supply and wide common-mode voltage swing.
Technical Context
The TSC202 operates in three functional modes determined by input differential voltage (Vsense) and common-mode voltage (Vicm) relative to VCC: Mode 1 (Vicm > 40% VCC) activates amplifier A2; Mode 2 (Vicm < 40% VCC) activates amplifier A1; Mode 3 (Vsense < 20 mV) exhibits elevated offset due to transconductance degradation. Its topology avoids traditional instrumentation amplifier matching constraints while maintaining 100–120 dB CMRR.
Comparator functionality includes 586–625 mV threshold, 9 mV hysteresis, 0.3 µs response time, and active-low RESET with 1.1 V threshold and 2 MΩ internal pull-down. The open-drain CMPOUT supports pull-up to 2.7–18 V independent of VCC, enabling flexible fault signaling in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - sets full-scale output at 100 mV shunt drop = 10 V output, enabling precise low-value shunt use |
| Common-mode range | -16 V to +80 V - supports direct sensing on battery rails, 48 V telecom lines, and negative-ground industrial buses |
| Total output error | ±3.5 % max - includes gain error and input offset drift, specified over full -40 to +125 °C automotive temperature range |
| Supply voltage | 2.7 V to 18 V - powers from single Li-ion cell up to 12 V automotive system without external regulator |
| Comparator threshold | 586–625 mV - referenced to internal 0.6 V bandgap, allowing accurate overcurrent trip with external resistor divider |
| Quiescent current | 1.8 mA max - enables always-on current monitoring in power-constrained automotive ECU and base station modules |
| Bandwidth | 0.3 MHz - supports fast transient detection in motor phase current or DC-DC converter overcurrent events |
Pinout & Package
Supplied in SO8 package (8-pin small outline integrated circuit), surface-mount, RoHS-compliant, with standard 1.27 mm pitch and exposed pad thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Positive supply input | Accepts 2.7–18 V; powers both amplifier and comparator; decoupling capacitor required near pin |
| 2 OUT | Analog output | 100× amplified shunt voltage; rail-to-rail swing (VCC − 0.25 V / 65 mV) with 1.5 Ω output impedance |
| 3 CMPIN | Comparator inverting input | Connected to internal 0.6 V reference; external resistor divider sets overcurrent threshold |
| 4 GND | Analog ground return | Common reference for amplifier, comparator, and output stage; separate from power ground recommended |
| 5 RESET | Active-low comparator reset | Pulled low to clear latched fault; open or high = transparent operation; internal 2 MΩ pull-down |
| 6 CMPOUT | Open-drain comparator output | Sinks ≥2.35 mA; compatible with 2.7–18 V pull-up; requires external pull-up for logic-level signaling |
| 7 VIN− | Current sense amplifier negative input | Connects to shunt resistor low side; input bias current ±0.5–16 µA affects low-current accuracy |
| 8 VIN+ | Current sense amplifier positive input | Connects to shunt resistor high side; supports common-mode down to -16 V for reverse-polarity protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (-40 to +125 °C) qualification ensures reliability in automotive powertrain and body control modules |
| Latching comparator | Retains fault state after overcurrent event until RESET is asserted - eliminates need for external SR latch |
| Internal 0.6 V reference | Stable bandgap reference connected to CMPIN - removes external reference IC and reduces BOM count |
| Wide common-mode range | -16 V to +80 V enables bidirectional sensing on floating rails, battery disconnect monitoring, and 48 V PoE systems |
| Mode-adaptive architecture | Switches between A1/A2 input stages based on Vicm to maintain accuracy across supply and load variations |
Applications
| Automotive Battery Management | Telecom 48 V Power Distribution |
|---|---|
|
Use Scenario: Monitoring main battery current during cold-cranking and regenerative braking in 12 V vehicle architectures. IC Role / Device Role / Timing Role: High-side current sense amplifier with latchable comparator detects overcurrent faults and holds alert until ECU reset. Use Value: Enables compliance with ISO 16750-2 pulse test requirements and supports ASIL-B diagnostic coverage via latched fault reporting. |
Use Scenario: Protecting 48 V DC distribution boards in wireless base stations against short-circuit and overload conditions. IC Role / Device Role / Timing Role: Low-side current monitor feeding comparator output to FPGA-based power sequencer for automatic rail shutdown. Use Value: Delivers sub-µs fault response (0.3 µs comparator propagation) and survives -18 V to +82 V absolute max input transients. |
| Industrial Motor Drive Phase Sensing | Test Equipment Current Source Calibration |
|
Use Scenario: Measuring phase current in BLDC inverter half-bridges where shunt sits between IGBT emitter and ground. IC Role / Device Role / Timing Role: High-bandwidth (0.3 MHz) current amplifier with 2 µs settling time captures PWM-edge transients for closed-loop FOC control. Use Value: Maintains ±3.5 % error across -40 to +125 °C ambient, eliminating need for per-unit temperature calibration in factory-built drives. |
Use Scenario: Calibrating programmable current sources in automated test equipment requiring traceable 0.1 % full-scale accuracy. IC Role / Device Role / Timing Role: Precision analog output stage referenced to stable internal bandgap, used as feedback sensor in servo-controlled current loops. Use Value: 55 nV/√Hz input-referred noise and 100 dB+ CMRR ensure measurement integrity in noisy lab environments with shared ground planes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX40056ASA+T | 200 V/V gain, 2.7–5.5 V supply only, no integrated comparator or reference | Requires external comparator and reference; suited for ultra-low-offset precision but lacks fault latching | Select when higher gain and lower offset (<±0.5 %) are critical, and system already provides comparator logic |
| INA282AIDR | 50 V/V gain, -14 to +80 V common-mode, no comparator, 1.1 mA quiescent current | Lower power and cost, but no fault detection capability - needs external MCU polling or comparator | Choose for cost-sensitive industrial monitoring where continuous analog output suffices and fault latching is handled elsewhere |
Compared with MAX40056ASA+T and INA282AIDR, TSC202IYST uniquely integrates latchable comparator and 0.6 V reference in a single SO8 package with AEC-Q100 qualification - reducing component count and enabling autonomous overcurrent protection without host intervention.
Availability
TSC202IYST is available at Aetrix Electronics and suitable for automotive battery management, telecom 48 V power distribution, and industrial motor drive phase sensing requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSC202IYST 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog devices for automotive, industrial, and consumer markets.
The TSC202 belongs to ST's high-voltage current sense amplifier product line, engineered specifically for robust overcurrent protection and precision shunt-based monitoring in harsh automotive and telecom environments.
FAQ
What is the minimum shunt voltage required for accurate operation of TSC202IYST?
The TSC202IYST is characterized for Vsense ≥ 20 mV; below this, input transconductance degrades and output error increases significantly - e.g., up to 0.4 V output with 0 mV input in some conditions. For reliable measurement, design for ≥25 mV full-scale shunt drop.
Can TSC202IYST be used for bidirectional current sensing?
No - the TSC202IYST is unidirectional. Its input stage architecture and common-mode range support only positive current flow through the shunt (VIN+ more positive than VIN−). For bidirectional sensing, ST recommends the TSC210 or external level-shifting solutions.
How does the RESET pin behave when left unconnected?
When RESET is left open, its internal 2 MΩ pull-down holds it low, placing the comparator in reset state (CMPOUT = low). To enable normal comparator operation, RESET must be pulled high via ≥10 kΩ resistor to VCC or driven actively high.
Is the CMPOUT pin compatible with 3.3 V logic systems?
Yes - CMPOUT is open-drain and rated for 2.7–18 V pull-up. Connect a 3.3 V pull-up resistor (e.g., 10 kΩ) to interface directly with 3.3 V MCU GPIO; VOL remains ≤300 mV at 2.35 mA sink, ensuring solid logic-low recognition.
TSC202IYST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 300 kHz
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 840µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 18 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MiniSO
TSC202IYST FAQ
1.How can I place an order for TSC202IYST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC202IYST 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 TSC202IYST reliable?
The price and inventory of TSC202IYST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC202IYST is usually 5 days.
3.What payment methods are accepted for TSC202IYST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC202IYST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC202IYST?
TSC202IYST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC202IYST 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 TSC202IYST?
For technical support, including TSC202IYST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC202IYST requirements.
6.How does Aetrix verify that TSC202IYST is sourced from the original manufacturer or authorized distributors?
All TSC202IYST 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 TSC202IYST meets industry standards.
7.What is the process for return or replacement of TSC202IYST?
All TSC202IYST units undergo pre-shipment inspection (PSI). If there is an issue with TSC202IYST, 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 TSC202IYST part is unused and in its original packaging.
Return procedure for TSC202IYST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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