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STMicroelectronics TSC1031IYPT
- Part No.:
- TSC1031IYPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSC1031IYPT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:11,528
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Product details
Overview
TSC1031IYPT from STMicroelectronics is a high-voltage, high-side current sense amplifier with independent supply and input common-mode voltage domains, 50 V/V or 100 V/V pin-selectable gain, ±500 µV input offset voltage (typ), and buffered ground-referenced output - designed for precision current monitoring in automotive battery management and photovoltaic string monitoring circuits.
For engineers reviewing the TSC1031IYPT datasheet, TSC1031IYPT pinout, TSC1031IYPT application, or TSC1031IYPT equivalent, key selection criteria include its 2.9–70 V single-supply common-mode range, 360 µA max supply current, TSSOP8 package compatibility, and dual-gain configuration via SEL pin - all critical for high-EMI industrial power systems requiring stable sensing under load-dump conditions.
Technical Context
The TSC1031 implements a current-multiplier architecture with fixed K1 = 10 (Rg3/Rg1) and digitally selectable K2 = 2.5 or 5 via the SEL pin, yielding total gains of exactly 50 V/V or 100 V/V. Its input stage operates with near-zero input bias current (10–15 µA) and supports reversed-battery survivability (−16 to +75 V on Vp/Vm).
It features dedicated EMI filtering support through external Rf1/Rf2/Cf network, and its output buffer delivers rail-to-rail compatible drive capability with ±1.5 mV/mA load regulation and 700 kHz bandwidth at Av = 50 V/V - enabling fast transient response in DC motor control feedback loops.
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 without level-shifting. |
| Common-Mode Range | 2.9–70 V (single-supply); supports high-side sensing across 12 V–48 V automotive and industrial bus voltages. |
| Gain Accuracy | ±2.5% (typ) at Vsense = 50 mV; ensures ≤±1.25 mV absolute error in 50 mV full-scale current measurement. |
| Input Offset Voltage | ±500 µV (25°C); contributes ≤±25 µV error at 50× gain, critical for low-current (<1 A) shunt applications. |
| Quiescent Current | 360 µA max; allows continuous operation in always-on battery-powered systems with <1 mW standby power. |
| Output Settling Time | 6 µs (1%) at Av = 50 V/V; supports closed-loop response in motor control systems up to ~30 kHz update rate. |
| EMI Survivability | −16 to +75 V on Vp/Vm pins; withstands ISO 7637-2 pulse 5a (load dump) without external clamping. |
Pinout & Package
TSC1031IYPT is housed in a thermally enhanced TSSOP8 (plastic, 3 × 3 mm, 0.65 mm pitch) package rated for −40 to +125 °C operation and 120 °C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Out | Analog output | Buffered, ground-referenced voltage proportional to (Vp−Vm) × Av; drives ADC inputs directly. |
| Gnd | Power supply reference | Digital ground return for SEL, A1, and internal logic; separate from high-side sensing domain. |
| Vcc+ | Positive supply | 2.7–5.5 V supply input; powers internal amplifiers and output buffer independently of common-mode voltage. |
| Vcc− | Negative supply | Enables dual-supply mode (e.g., Vcc+ = 5 V, Vcc− = −5 V) to extend common-mode down to −2.1 V. |
| Vp | High-side sense input (+) | Connects to shunt resistor's high-potential side; withstands up to +75 V relative to Vcc−. |
| Vm | High-side sense input (−) | Connects to shunt resistor's low-potential side; same survivability as Vp; defines common-mode reference. |
| SEL | Digital gain select | Logic-low = 50 V/V, logic-high = 100 V/V; TTL/CMOS compatible with 0.5 V IL / 1.2 V IH thresholds. |
| A1 | Internal node access | Connection to output resistor node; unused in standard configurations; must be left open or tied to Gnd per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Independent CM & supply domains | Allows Vp/Vm to float up to 70 V while Vcc+ remains at 3.3 V - eliminates need for isolated supplies in high-voltage systems. |
| Pin-selectable dual gain | Hardware-configured 50×/100× scaling simplifies calibration and avoids firmware-dependent gain switching latency. |
| Integrated EMI filter support | Dedicated Rf1/Rf2/Cf pads enable robust 100 kHz–1 MHz noise rejection without degrading DC accuracy or bandwidth. |
| Reversed-battery tolerance | Survives −16 V on Vp/Vm (relative to Vcc−), meeting automotive cold-crank and reverse-polarity test requirements. |
| Low-drift output stage | ±240 ppm/°C output drift ensures <±0.3% full-scale error over −40 to +125 °C temperature range. |
Applications
| Automotive Battery Monitoring | Photovoltaic String Monitoring |
|---|---|
Use Scenario: Real-time current tracking of 12 V/24 V lead-acid or Li-ion battery packs during charge/discharge cycles in start-stop systems. IC Role / Device Role / Timing Role: High-side current sense amplifier providing isolated, ground-referenced analog output to MCU ADC with <10 µs response to load transients. Use Value: Enables accurate state-of-charge estimation and overcurrent protection without shunt grounding compromise or isolation component cost. | Use Scenario: Monitoring individual string currents in multi-string solar arrays to detect partial shading or module failure. IC Role / Device Role / Timing Role: Precision differential amplifier translating millivolt-level shunt voltage into scalable 0–5 V output for data logger or MPPT controller. Use Value: Supports ±0.5% current measurement accuracy across 70 V common-mode range, improving energy yield analysis and fault localization. |
| DC Motor Control Feedback | Uninterruptible Power Supply (UPS) Sensing |
Use Scenario: Closed-loop current regulation in brushed/BLDC motor drivers operating from 24–48 V DC bus with regenerative braking. IC Role / Device Role / Timing Role: High-bandwidth (700 kHz) current sensor feeding real-time PWM current limit logic with 6 µs settling time. Use Value: Prevents MOSFET shoot-through and thermal runaway by enabling sub-10 µs overcurrent shutdown response. | Use Scenario: Bidirectional current sensing in online UPS inverters to monitor battery charge/discharge and AC line input during transfer events. IC Role / Device Role / Timing Role: Dual-supply configurable amplifier supporting −2.1 to +65 V common-mode range for seamless transition between grid and battery modes. Use Value: Eliminates need for separate high-side/low-side sensors, reducing BOM count and PCB area in compact 1–3 kVA UPS designs. |
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 | Fixed 20 V/V gain, 120 kHz bandwidth, integrated 2.5 V reference; higher quiescent current (1.8 mA). | Requires external gain staging for 50/100× scaling; better suited for low-bandwidth battery protection ICs than motor control. | Select when system requires built-in reference and AEC-Q100 Grade 1 qualification, but accept reduced bandwidth and fixed gain. |
| TSC2010IYPT | Same pinout and gain options, but lower CMR (85 dB vs. 90 dB), wider offset drift (±10 µV/°C vs. −20 to +5 µV/°C). | Suitable for cost-sensitive automotive interior modules where extreme precision is not required. | Choose for legacy design reuse or price-sensitive volume production where 0.1% accuracy degradation is acceptable. |
Compared with INA240A1QDRQ1 and TSC2010IYPT, the TSC1031IYPT offers superior common-mode rejection (90 dB), tighter input offset drift (−20 to +5 µV/°C), and lower quiescent current (360 µA), making it optimal for high-accuracy, low-power, high-EMI environments like engine control units and solar microinverters.
Availability
TSC1031IYPT is available at Aetrix Electronics and suitable for automotive battery monitoring, photovoltaic string monitoring, and DC motor control applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSC1031IYPT 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, specializing in power management, analog, and automotive-grade ICs with broad manufacturing scale and AEC-Q100 qualification capabilities.
The TSC1031 belongs to ST's high-voltage current sense amplifier product line, engineered specifically for robust, precision shunt-based current measurement in harsh automotive and industrial environments where supply independence and EMI resilience are mandatory.
FAQ
What is the maximum common-mode voltage the TSC1031IYPT can withstand during transient conditions?
The TSC1031IYPT survives −16 V to +75 V on Vp and Vm pins relative to Vcc−, covering ISO 7637-2 load-dump (pulse 5a) and reverse-battery scenarios without damage or latch-up. This rating applies regardless of supply configuration and is validated per ST's production test flow.
Can the TSC1031IYPT operate with Vcc− floating or disconnected?
No - Vcc− must be connected to GND in single-supply mode or to a defined negative voltage (e.g., −5 V) in dual-supply mode. Leaving Vcc− unconnected violates absolute maximum ratings and may cause undefined behavior or permanent damage due to internal node biasing failure.
How does the A1 pin affect circuit performance if left unconnected?
The A1 pin is an internal node tied to the output resistor network and must be left open or connected to GND per ST's layout recommendations. Floating A1 introduces parasitic capacitance that degrades high-frequency stability and may cause oscillation above 100 kHz; no functional benefit is gained by routing it externally.
Is the TSC1031IYPT qualified for automotive applications per AEC-Q100?
Yes - the TSC1031IYPT is AEC-Q100 Grade 1 qualified (−40 to +125 °C), with full qualification test reports available from STMicroelectronics. It meets stress testing requirements for humidity, temperature cycling, and ESD (2.5 kV HBM), and is approved for use in engine control, body electronics, and ADAS power subsystems.
TSC1031IYPT 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TSC1031IYPT FAQ
1.How can I place an order for TSC1031IYPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC1031IYPT 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 TSC1031IYPT reliable?
The price and inventory of TSC1031IYPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC1031IYPT is usually 5 days.
3.What payment methods are accepted for TSC1031IYPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC1031IYPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC1031IYPT?
TSC1031IYPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC1031IYPT 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 TSC1031IYPT?
For technical support, including TSC1031IYPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC1031IYPT requirements.
6.How does Aetrix verify that TSC1031IYPT is sourced from the original manufacturer or authorized distributors?
All TSC1031IYPT 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 TSC1031IYPT meets industry standards.
7.What is the process for return or replacement of TSC1031IYPT?
All TSC1031IYPT units undergo pre-shipment inspection (PSI). If there is an issue with TSC1031IYPT, 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 TSC1031IYPT part is unused and in its original packaging.
Return procedure for TSC1031IYPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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