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STMicroelectronics TSB621IYLT
- Part No.:
- TSB621IYLT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSB621IYLT.pdf
- Description:
- LOW POWER, 1.7MHZ, RAIL-TO-RAIL
- Quantity:
- Payment:
- Shipping:
Inventory:2,978
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Product details
Overview
TSB621IYLT from STMicroelectronics is a single-channel, rail-to-rail output operational amplifier designed for precision signal conditioning in automotive and industrial power supply monitoring circuits. It delivers 1.7 MHz gain bandwidth, ≤1 mV input offset voltage at 25 °C, 375 μA max. supply current per channel at 36 V, and operates across –40 to +125 °C with 2.7–36 V supply range.
For engineers reviewing the TSB621IYLT datasheet, TSB621IYLT pinout, TSB621IYLT application, or TSB621IYLT equivalent, key selection criteria include its rail-to-rail output swing, low quiescent current at high supply voltage, extended temperature qualification, and SOT23-5 footprint compatibility for space-constrained PCB layouts.
Technical Context
The TSB621IYLT uses a bipolar input stage enabling rail-to-rail output swing while maintaining input common-mode voltage range extending to ground (VCC−). Its unity-gain stable architecture supports direct use in buffer, comparator interface, and sensor signal amplification without external compensation.
It features EMI hardening and 4 kV HBM ESD tolerance-critical for automotive subsystems exposed to noisy electrical environments-and meets AEC-Q100 Grade 1 qualification per ordering code suffix "IY", confirming suitability for under-hood and body control module applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.7 MHz at VCC = 36 V - enables stable closed-loop operation up to ~100 kHz with gain ≥10. |
| Input Offset Voltage | ≤1 mV at 25 °C - ensures ≤10 mV error in 10 V full-scale sensing without trimming. |
| Supply Current per Channel | 375 μA max. at 36 V - allows continuous operation in always-on automotive modules with <13.5 mW total dissipation. |
| Rail-to-Rail Output | Swings within 35 mV of VCC and 50 mV of VCC− at 25 °C - preserves dynamic range in low-voltage ADC interfaces. |
| Operating Temperature | –40 to +125 °C - qualified for engine control units, battery management, and industrial motor drives. |
| Common-Mode Input Range | Includes ground (VCC−) - permits direct sensing of shunt resistors referenced to system ground. |
| ESD Tolerance | 4 kV HBM - reduces need for external protection in cost-sensitive automotive PCBs. |
Pinout & Package
SOT23-5 package: 2.9 mm × 2.8 mm × 1.3 mm body, wettable flanks optional, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail sourced/sunk current up to 45 mA (sink) / 45 mA (source) at 36 V. |
| 2 (VCC−) | Negative supply | Reference for input common-mode range down to ground; must be connected even in single-supply use. |
| 3 (IN+) | Non-inverting input | High-impedance node (IIB ≤30 nA) accepting signals from sensors or DACs with minimal loading. |
| 4 (IN−) | Inverting input | Accepts feedback network or differential input; matched bias current minimizes offset drift. |
| 5 (VCC+) | Positive supply | Supports up to 36 V - enables direct connection to 24 V industrial rails or automotive battery lines. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power precision amplification | 1.7 MHz GBW with only 375 μA supply current at 36 V - optimizes speed/power trade-off for always-on systems. |
| Rail-to-rail output drive | Output swings to within 35 mV of VCC+ and 50 mV of VCC− - maximizes usable ADC input range in 3.3 V or 5 V systems. |
| Extended temperature operation | Specified from –40 to +125 °C with ≤1.6 mV max. offset over full range - eliminates derating in engine bay deployments. |
| EMI-hardened architecture | Immunity to RF interference up to 1 GHz - prevents erroneous output during AM/FM band switching or ignition noise events. |
| Ground-sensing input capability | Input common-mode range includes VCC− - enables direct current sensing on low-side shunts without level-shifting circuitry. |
Applications
| Automotive Battery Monitoring | Industrial DC-DC Feedback Loop |
|---|---|
Use Scenario: Real-time measurement of 12 V/24 V battery voltage and load current in vehicle body control modules. IC Role / Device Role / Timing Role: Precision buffer and current-sense amplifier feeding 12-bit ADC inputs. Use Value: ≤1 mV offset ensures ±10 mV absolute accuracy over temperature, meeting ISO 16750-2 voltage monitoring requirements. |
Use Scenario: Error amplification in isolated flyback or buck-boost converter feedback paths. IC Role / Device Role / Timing Role: Compensator in Type II/III control loop with 1.7 MHz GBW supporting >100 kHz switching frequencies. Use Value: Rail-to-rail output drives optocoupler LED directly, eliminating level-shift transistors and reducing BOM count. |
| Motor Phase Current Sensing | Programmable Logic Controller Analog Input |
Use Scenario: Low-side shunt-based current measurement in 3-phase inverter gate drivers. IC Role / Device Role / Timing Role: Single-supply difference amplifier with ground-referenced input. Use Value: Input common-mode range including VCC− allows direct connection to shunt resistor without offset injection. |
Use Scenario: Signal conditioning for 4–20 mA loop receivers and thermocouple front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier preceding sigma-delta ADC. Use Value: 2 µV/°C offset drift and 25 nV/√Hz input noise maintain EN 61000-6-2 immunity and 16-bit effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB611ILT | Lower supply current (220 μA max.), reduced GBW (1.1 MHz), same SOT23-5 package. | Better suited for ultra-low-power wake-up circuits where bandwidth <100 kHz suffices. | Select when minimizing standby power outweighs need for fast transient response. |
| TSB711IYLT | Rail-to-rail input/output, higher precision (0.35 mV max. VIO), higher supply current (650 μA). | Required for high-accuracy sensor bridges or precision reference buffers where input stage headroom matters. | Choose when input common-mode range beyond rail limits is needed, e.g., for photodiode transimpedance amps. |
Compared with TSB621IYLT, TSB611ILT trades bandwidth for lower quiescent current in always-on sensing, while TSB711IYLT adds rail-to-rail input capability at higher power-making TSB621IYLT the optimal balance of speed, precision, and efficiency for general-purpose automotive signal conditioning.
Availability
TSB621IYLT is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial DC-DC feedback loops, and motor phase current sensing requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSB621IYLT 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, specializing in automotive-grade analog, power, and microcontroller solutions.
The TSB62x series belongs to ST's precision operational amplifier product line, engineered specifically for robust signal conditioning in harsh-environment automotive and industrial power systems.
FAQ
Is TSB621IYLT pin-compatible with other SOT23-5 op-amps?
No-TSB621IYLT uses a non-standard pinout: Pin 1 = OUT, Pin 2 = VCC−, Pin 3 = IN+, Pin 4 = IN−, Pin 5 = VCC+. This differs from industry-standard SOIC/SOT23-5 op-amps (e.g., LMV321) where Pin 2 is IN− and Pin 3 is IN+. PCB layout must follow ST's DS13848 Figure 1 exactly.
Does TSB621IYLT require external compensation for unity-gain stability?
No-TSB621IYLT is internally compensated for unity-gain stability across its full operating range (2.7–36 V, –40 to +125 °C). No external capacitors or resistors are needed for stable operation in voltage-follower or gain-of-1 configurations per DS13848 Section 3 AC performance data.
What is the maximum capacitive load the TSB621IYLT can drive without oscillation?
TSB621IYLT maintains ≥45° phase margin driving up to 100 pF capacitive load (DS13848 Table 6–8, Figures 19–21). For loads >100 pF, a series isolation resistor (≥10 Ω) between output and capacitance is recommended to preserve stability in high-impedance sensor interfaces.
Can TSB621IYLT operate from a single 3.3 V supply?
Yes-TSB621IYLT functions from 2.7 V minimum supply. At 3.3 V, it delivers rail-to-rail output swing (within ~40 mV of each rail), 1.45 MHz GBW, and 330 μA typical supply current. Input common-mode range includes ground, enabling direct interfacing with 3.3 V logic and ADC references.
TSB621IYLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 310µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSB621IYLT FAQ
1.How can I place an order for TSB621IYLT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB621IYLT 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 TSB621IYLT reliable?
The price and inventory of TSB621IYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB621IYLT is usually 5 days.
3.What payment methods are accepted for TSB621IYLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB621IYLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB621IYLT?
TSB621IYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB621IYLT 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 TSB621IYLT?
For technical support, including TSB621IYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB621IYLT requirements.
6.How does Aetrix verify that TSB621IYLT is sourced from the original manufacturer or authorized distributors?
All TSB621IYLT 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 TSB621IYLT meets industry standards.
7.What is the process for return or replacement of TSB621IYLT?
All TSB621IYLT units undergo pre-shipment inspection (PSI). If there is an issue with TSB621IYLT, 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 TSB621IYLT part is unused and in its original packaging.
Return procedure for TSB621IYLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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