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STMicroelectronics TSC1021AIYPT
- Part No.:
- TSC1021AIYPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSC1021AIYPT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,407
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Product details
Overview
TSC1021AIYPT from STMicroelectronics is a high-side current sense amplifier with fixed 20 V/V gain, operating over 2.8 V to 30 V common-mode input range independent of 3.5–5.5 V supply, ±2.3 mV max input offset (−40 °C to 125 °C), ±2.5 % max total output error, and 8 µV/°C offset drift - used in automotive battery monitoring and industrial SMPS current feedback loops.
For engineers reviewing the TSC1021AIYPT datasheet, TSC1021AIYPT pinout, TSC1021AIYPT application, or TSC1021AIYPT equivalent, key selection criteria include reverse-battery survival (−32 V), load-dump tolerance (60 V), EMI filtering integration, TSSOP8 footprint compatibility, and AEC-Q100 automotive qualification.
Technical Context
The TSC1021AIYPT employs a precision current-sense architecture that isolates measurement from supply rail constraints: its input common-mode voltage (2.8–30 V) operates independently of VCC (3.5–5.5 V), enabling accurate shunt-based sensing in high-voltage automotive and telecom power rails. It integrates an internal buffer for low-impedance output drive and features built-in EMI filtering.
Designed for harsh environments, it delivers 90–105 dB DC CMR and 80–95 dB SVR across −40 °C to 125 °C, with 7 µs settling time to 1 % and 800 kHz bandwidth - supporting fast transient detection in overcurrent protection circuits without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 20 V/V - eliminates external resistor network, reduces layout sensitivity and calibration drift. |
| Input Offset Voltage | ±2.3 mV max (−40 °C to 125 °C) - sets minimum resolvable sense voltage at ~115 µV for 5 mΩ shunt. |
| Total Output Error | ±2.5 % max (−40 °C to 125 °C) - defines full-scale accuracy limit for closed-loop current regulation. |
| Common-Mode Range | 2.8 V to 30 V (operating), independent of VCC - enables direct sensing on 12 V/24 V/48 V battery or bus lines. |
| Survival Rating | −32 V to +60 V - withstands reverse-battery and ISO 7637-2 load-dump transients without external clamping. |
| Supply Current | 300 µA max - supports always-on monitoring in low-power automotive modules. |
| Output Settling Time | 7 µs to 1 % - supports real-time overcurrent response in <10 µs protection windows. |
Pinout & Package
Housed in a compact, lead-free TSSOP8 package (3.0 × 4.4 mm, 0.65 mm pitch), the TSC1021AIYPT supports surface-mount assembly and thermal resistance of 120 °C/W (junction-to-ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vm) | Analog input (low-side shunt node) | Current exits shunt here; referenced to GND; part of differential pair with Vp. |
| 3 (Gnd) | Power supply ground | Reference return for VCC and output stage; must be low-impedance connection to system ground plane. |
| 4 (Out) | Analog output (buffered) | Low-impedance, rail-to-rail-capable output; drives ADC inputs or comparator thresholds directly. |
| 6 (VCC) | Positive supply | 3.5–5.5 V logic-compatible supply; decoupling capacitor required within 1 cm. |
| 8 (Vp) | Analog input (high-side shunt node) | Current enters shunt here; common-mode voltage up to 30 V; ESD-protected (4 kV HBM). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified (automotive grade) | Validated for −40 °C to 125 °C operation with advanced screening per AEC Q001/Q002 - suitable for engine control, BMS, and ADAS power stages. |
| Integrated EMI filtering | Reduces susceptibility to high-frequency noise from switching regulators and motor drives without external RC networks. |
| Buffered output stage | Drives capacitive loads up to 47 pF with stable 7 µs settling - avoids accuracy loss when interfacing to SAR ADCs or microcontroller inputs. |
| Reversed-battery & load-dump hardened | Operates after −32 V reverse polarity and survives 60 V transients - eliminates need for external TVS diodes in 12 V/24 V vehicle systems. |
| Low temperature drift | 8 µV/°C input offset drift and 100 ppm/°C output voltage drift - maintains calibration stability across under-hood thermal cycles. |
Applications
| Automotive Battery Monitoring | Notebook Power Management |
|---|---|
Use Scenario: Real-time monitoring of starter battery current during cranking and regenerative braking in 12 V vehicles. 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 precise state-of-charge estimation and fault detection despite ±32 V reverse polarity and 60 V load-dump events. | Use Scenario: Accurate load-current measurement in CPU/GPU VRM phases for dynamic power budgeting and thermal throttling. IC Role / Device Role / Timing Role: High-side sensing element feeding analog feedback to digital power controller or PMIC telemetry interface. Use Value: Delivers ±2.5 % full-scale accuracy across −40 °C to 125 °C, supporting tight current regulation in space-constrained laptop PCBs. |
| Industrial SMPS Feedback | Telecom 48 V Rectifier Monitoring |
Use Scenario: Secondary-side current sensing in isolated DC-DC converters for overcurrent protection and current-mode control loop stabilization. IC Role / Device Role / Timing Role: Precision analog front-end translating shunt voltage into linear output for optocoupler-isolated error amplifiers or digital controllers. Use Value: 800 kHz bandwidth and 7 µs settling support fast current limiting (<10 µs response) without phase lag in critical protection paths. | Use Scenario: Input current monitoring in hot-swap controllers and redundant 48 V rectifier modules in telecom power shelves. IC Role / Device Role / Timing Role: High-common-mode amplifier measuring shunt voltage on positive rail while referenced to system ground. Use Value: 30 V common-mode range and 90+ dB CMR reject noise from adjacent high-frequency converters sharing same chassis ground. |
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 |
|---|---|---|---|
| INA240A1QDRQ1 | Higher gain accuracy (±0.2 %), wider common-mode (−4 V to 80 V), but higher quiescent current (2.4 mA) | Preferred for precision motor control where offset drift dominates error budget; less suitable for ultra-low-power always-on monitoring | Select if absolute accuracy >1 % is required and supply current is not constrained. |
| TSC1021BIYPT | Same package and qualification, but 50 V/V fixed gain and higher output error (±2.5 % still holds) | Better resolution for low-current sensing (e.g., <1 A with 10 mΩ shunt); trades dynamic range for sensitivity | Choose when sensing sub-ampere currents where 50× gain improves SNR over 20× without adding external amplification. |
Compared with INA240A1QDRQ1, the TSC1021AIYPT offers lower power and smaller footprint at the cost of absolute gain accuracy; versus TSC1021BIYPT, it provides higher current-handling headroom and reduced saturation risk in high-Vsense conditions.
Availability
TSC1021AIYPT is available at Aetrix Electronics and suitable for automotive battery management, industrial SMPS feedback, and telecom rectifier monitoring requiring stable component supply across extended temperature and transient-voltage conditions.
Supply support for TSC1021AIYPT 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 analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The TSC1021 belongs to ST's high-reliability current sense amplifier product line, engineered specifically for automotive-grade power monitoring under ISO 7637-2 and AEC-Q100 stress conditions.
FAQ
What is the maximum common-mode voltage the TSC1021AIYPT can withstand during normal operation?
The TSC1021AIYPT operates continuously with input common-mode voltages from 2.8 V to 30 V - independent of its 3.5–5.5 V supply rail. This allows direct sensing on 12 V, 24 V, or 48 V buses without level-shifting circuitry, making it ideal for high-side placement in automotive and telecom power systems.
Does the TSC1021AIYPT require external components for basic operation?
No external components are required for core functionality: the device integrates EMI filtering, a buffered output stage, and fixed 20 V/V gain. Only a 100 nF ceramic decoupling capacitor on VCC and proper PCB layout (short, low-inductance shunt traces) are recommended - no gain-setting resistors, compensation networks, or output buffers needed.
How does the TSC1021AIYPT handle reverse-battery conditions?
The TSC1021AIYPT survives −32 V applied to Vp and Vm pins (relative to GND) per absolute maximum ratings, meeting automotive reverse-polarity test requirements. Its internal protection architecture prevents latch-up or damage during battery misconnection, eliminating need for external series diodes or TVS devices in most 12 V/24 V vehicle designs.
Is the TSC1021AIYPT pin-compatible with other members of the TSC102x family?
Yes - all TSC102x variants (including TSC1021AIYPT, TSC1021BIYPT, TSC1021AIPT, and TSC1021BIPT) share identical TSSOP8 pinout, electrical interface, and footprint. Gain and qualification grade differ only in marking and internal trimming; no PCB redesign is needed when swapping between A/B gain versions or industrial/automotive grades.
TSC1021AIYPT 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:
- 0.45V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 800 kHz
- Current - Input Bias:
- 7 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TSC1021AIYPT FAQ
1.How can I place an order for TSC1021AIYPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC1021AIYPT 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 TSC1021AIYPT reliable?
The price and inventory of TSC1021AIYPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC1021AIYPT is usually 5 days.
3.What payment methods are accepted for TSC1021AIYPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC1021AIYPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC1021AIYPT?
TSC1021AIYPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC1021AIYPT 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 TSC1021AIYPT?
For technical support, including TSC1021AIYPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC1021AIYPT requirements.
6.How does Aetrix verify that TSC1021AIYPT is sourced from the original manufacturer or authorized distributors?
All TSC1021AIYPT 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 TSC1021AIYPT meets industry standards.
7.What is the process for return or replacement of TSC1021AIYPT?
All TSC1021AIYPT units undergo pre-shipment inspection (PSI). If there is an issue with TSC1021AIYPT, 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 TSC1021AIYPT part is unused and in its original packaging.
Return procedure for TSC1021AIYPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSC1021AIYPT Tags
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