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STMicroelectronics TSC1021AIPT
- Part No.:
- TSC1021AIPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSC1021AIPT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,209
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Product details
Overview
TSC1021AIPT 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, ±1.5 mV max input offset at 25 °C, ±1.5 % total output voltage error at 25 °C, and -40 °C to 125 °C temperature range - used in automotive battery monitoring and industrial SMPS current sensing.
For engineers reviewing the TSC1021AIPT datasheet, TSC1021AIPT pinout, TSC1021AIPT application, or TSC1021AIPT equivalent, key selection criteria include common-mode survival up to -32 V / +60 V (reverse-battery/load-dump), EMI filtering integration, low 300 µA supply current, TSSOP8 package footprint, and buffered ground-referenced output for ADC interfacing.
Technical Context
The TSC1021AIPT implements a precision current-sense architecture with differential input stage tolerant of high common-mode voltages far exceeding VCC, enabling direct high-side shunt measurement in 12 V/24 V automotive and 48 V telecom systems. Its internal buffer isolates the output from load-induced accuracy degradation.
It features dual-level protection: DC common-mode rejection ≥90 dB (up to 105 dB typ) and supply voltage rejection ≥80 dB (up to 95 dB typ), with dVos/dT = 8 µV/°C and dVout/dT = 100 ppm/°C ensuring stable performance across thermal stress in engine bay or server PSU environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed - eliminates external resistor network, reduces layout sensitivity and calibration drift. |
| Input Offset Voltage | ±1.5 mV max at 25 °C - enables accurate detection of sub-75 mV shunt drops (e.g., 3.75 mΩ @ 20 A). |
| Total Output Error | ±1.5 % at 25 °C - supports <1 % system-level current measurement accuracy after single-point calibration. |
| Common-Mode Range | 2.8 V to 30 V operating - allows sensing on 12 V/24 V/30 V rails without level-shifting or isolated supplies. |
| Supply Current | ≤300 µA - suitable for always-on battery monitoring with minimal parasitic drain. |
| EMI Filtering | Integrated - suppresses RF interference from switching nodes in SMPS and motor drives without external RC networks. |
| Operating Temp | -40 °C to 125 °C - qualified for under-hood automotive and industrial ambient conditions. |
Pinout & Package
The TSC1021AIPT is housed in a compact, lead-free, RoHS-compliant TSSOP8 package (3.0 × 4.4 mm, 0.65 mm pitch), optimized for thermal dissipation (RthJA = 120 °C/W) and PCB space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vm | Analog input (low-side shunt node) | Current exits shunt here; referenced to GND; withstands -32 V to +60 V. |
| 3 - Gnd | Power supply reference | System ground return for VCC and output buffer; must be low-impedance for accuracy. |
| 4 - Out | Analog output | Buffered, ground-referenced voltage (Vout = 20 × (Vp − Vm)); drives ADC inputs directly. |
| 6 - VCC | Positive supply | 3.5–5.5 V logic-compatible supply; independent of input common-mode voltage. |
| 8 - Vp | Analog input (high-side shunt node) | Current enters shunt here; common-mode tolerant up to +60 V absolute max. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Withstands -32 V on Vp/Vm - eliminates need for external series diodes in automotive 12 V systems. |
| Load-dump tolerance | Survives +60 V transients - meets ISO 7637-2 Pulse 5a requirements without clamping circuitry. |
| ESD robustness | 4 kV HBM on Vp/Vm pins - reduces field failure risk during handling and board assembly. |
| Low-temperature drift | dVos/dT = 8 µV/°C - limits offset shift to <0.8 mV over full -40 °C to 125 °C range. |
| Output buffering | Low-impedance source/sink - maintains accuracy with 10 kΩ–100 kΩ ADC input loads without gain error. |
Applications
| Automotive Battery Monitoring | Notebook Power Management |
|---|---|
Use Scenario: Real-time monitoring of starter battery current during cranking, charging, and parasitic drain in passenger vehicles. IC Role / Device Role / Timing Role: High-side current sense amplifier measuring bidirectional current through inline shunt resistor. Use Value: Enables precise state-of-charge estimation and fault detection (e.g., short-circuit, open-wire) despite ±32 V reverse-battery and 60 V load-dump transients. | Use Scenario: Accurate rail current measurement on CPU/GPU VRM outputs and system 3.3 V/5 V power planes. IC Role / Device Role / Timing Role: Ground-referenced current sensing amplifier feeding analog input of system PMIC or microcontroller ADC. Use Value: Delivers ±1.5 % output accuracy at 25 °C with 300 µA quiescent current - extends battery runtime while maintaining thermal headroom. |
| Industrial SMPS Current Sharing | Telecom 48 V Rectifier Monitoring |
Use Scenario: Parallel operation of multiple switch-mode power supplies where per-rail current matching ensures balanced thermal loading. IC Role / Device Role / Timing Role: High-side current sensor providing feedback to digital controller for active current balancing loop. Use Value: 800 kHz bandwidth and 7 µs settling time support fast-response current regulation; TSSOP8 footprint simplifies multi-channel PCB layout. | Use Scenario: Input/output current monitoring in telecom rectifier modules operating from -48 V DC distribution bus. IC Role / Device Role / Timing Role: High-common-mode amplifier sensing current on positive output rail referenced to system ground. Use Value: 2.8–30 V common-mode range accommodates 48 V system derating; integrated EMI filtering rejects noise from adjacent high-frequency converters. |
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 |
|---|---|---|---|
| INA240A1IDR | 20 V/V gain, wider common-mode (−4 V to 80 V), higher ICC (1.8 mA), no integrated EMI filter | Better suited for 48 V/60 V industrial systems requiring extended survival range | Select when >60 V transient immunity or >80 V operating CMR is required; accept higher supply current. |
| TSC1021BIPT | Same package and specs, but 50 V/V gain, higher output error at low Vsense (±7 % at 20 mV) | Preferred for lower-current sensing (e.g., <1 A with 100 mΩ shunt) where higher gain improves SNR | Choose for improved resolution on small shunt voltages; verify output swing compatibility with downstream ADC. |
Compared with INA240A1IDR and TSC1021BIPT, the TSC1021AIPT offers optimal balance of ultra-low quiescent current (300 µA), built-in EMI filtering, and automotive-grade transient robustness - making it ideal for cost-sensitive, battery-powered, and thermally constrained high-side sensing where 20× gain suffices.
Availability
TSC1021AIPT is available at Aetrix Electronics and suitable for automotive battery monitoring, notebook power management, and industrial SMPS current sharing requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned reliability.
Supply support for TSC1021AIPT 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 analog, MCU, power, and sensing solutions for automotive, industrial, and consumer markets.
The TSC1021 belongs to ST's precision current-sense amplifier product line, engineered specifically for harsh-environment high-side monitoring - emphasizing reverse-battery resilience, load-dump survival, and ESD-hardened signal integrity in automotive and industrial power systems.
FAQ
What is the maximum common-mode voltage the TSC1021AIPT can survive during transients?
The TSC1021AIPT survives common-mode voltages from −32 V to +60 V on its Vp and Vm pins, meeting ISO 7637-2 Pulse 5a load-dump and reverse-battery test requirements. This rating applies under no-power or powered conditions and is independent of VCC voltage. It does not imply continuous operation at these extremes - sustained operation remains limited to 2.8 V–30 V.
Can the TSC1021AIPT be used with a 3.3 V supply?
Yes - the TSC1021AIPT operates with VCC from 3.5 V to 5.5 V, so a nominal 3.3 V rail is insufficient. However, a regulated 3.5 V minimum (e.g., LDO output) is acceptable. At 3.5 V, output swing is reduced: Voh ≈ 185 mV and Vol ≈ 165 mV (over temperature), limiting dynamic range for low-Vsense applications. For 3.3 V systems, verify that the ADC's input range accommodates this compressed output.
How does the integrated EMI filtering affect signal bandwidth?
The integrated EMI filter attenuates RF interference above ~10 MHz without degrading the 800 kHz small-signal bandwidth or 7 µs 1 % settling time. It functions as a front-end low-pass stage targeting switching noise from nearby MOSFETs or gate drivers, preserving fidelity of the DC–800 kHz current waveform. No external RC components are needed, and phase margin remains unaffected for closed-loop control use cases.
Is the TSC1021AIPT pin-compatible with other ST current sense amplifiers?
No - the TSC1021AIPT uses a proprietary 8-pin TSSOP layout optimized for high-voltage isolation between Vp/Vm and GND/Out. It is not pin-compatible with ST's TSC101, TSC103, or TS110x families. Pin mapping differs significantly: e.g., TSC103 places REF on Pin 2 (unavailable on TSC1021), and TSC101 lacks dedicated Vm/Vp separation. Board redesign is required for substitution.
TSC1021AIPT 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TSC1021AIPT FAQ
1.How can I place an order for TSC1021AIPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC1021AIPT 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 TSC1021AIPT reliable?
The price and inventory of TSC1021AIPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC1021AIPT is usually 5 days.
3.What payment methods are accepted for TSC1021AIPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC1021AIPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC1021AIPT?
TSC1021AIPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC1021AIPT 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 TSC1021AIPT?
For technical support, including TSC1021AIPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC1021AIPT requirements.
6.How does Aetrix verify that TSC1021AIPT is sourced from the original manufacturer or authorized distributors?
All TSC1021AIPT 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 TSC1021AIPT meets industry standards.
7.What is the process for return or replacement of TSC1021AIPT?
All TSC1021AIPT units undergo pre-shipment inspection (PSI). If there is an issue with TSC1021AIPT, 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 TSC1021AIPT part is unused and in its original packaging.
Return procedure for TSC1021AIPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSC1021AIPT Tags
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LM358DT
STMicroelectronics
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MCP6006UT-E/OT
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