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Renesas UPC277C(31)-A
- Part No.:
- UPC277C(31)-A
- Manufacturer:
- Renesas
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
UPC277C(31)-A.pdf
- Description:
- UPC277C DUAL COMPARATOR
- Quantity:
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Inventory:296
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Product details
Overview
UPC277C(31)-A from Renesas Electronics is a dual voltage comparator IC with open-collector outputs, designed for single-supply operation from +2 V to +32 V. It features ±2 mV typical input offset voltage, 1.8 µs typical pulse response time, and operates across −40 °C to +125 °C ambient temperature - enabling use in industrial motor control feedback loops, power supply overvoltage detection, and battery management systems.
For engineers reviewing the UPC277C(31)-A datasheet, UPC277C(31)-A pinout, UPC277C(31)-A application, or UPC277C(31)-A equivalent, key selection criteria include guaranteed extended-temperature performance, low-input-bias-current PNP front-end architecture, open-collector output compatibility with wired-OR logic, and TSSOP-8 package footprint compatibility with space-constrained PCB layouts.
Technical Context
The UPC277C(31)-A implements a dual-channel, rail-to-rail common-mode input stage using PNP transistor pairs, delivering stable comparison behavior down to GND-level inputs. Its open-collector outputs support flexible pull-up configurations and direct interfacing with TTL/CMOS logic or external FET drivers.
Designed for single-supply systems, it maintains full functionality across V+ = +2 V to +32 V while sustaining 200,000 typical large-signal voltage gain and 0.2 V typical output saturation voltage at 4 mA sink current - critical for precision threshold detection in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2 V to +32 V (single supply); enables direct integration into 3.3 V, 5 V, 12 V, and 24 V industrial power rails without level-shifting. |
| Input Offset Voltage | ±2 mV (typical); ensures accurate voltage thresholding within ±10 mV error band at room temperature for sensor signal conditioning. |
| Pulse Response Time | 1.8 µs (typical); supports real-time overcurrent/overvoltage fault detection in switching power supplies and motor drives. |
| Output Sink Current | 16 mA (typical); drives LEDs, small relays, or MOSFET gate resistors directly without external buffer stages. |
| Operating Temperature | −40 °C to +125 °C; qualified for under-hood automotive subsystems, industrial PLC I/O modules, and outdoor power electronics. |
| Input Bias Current | 17 nA (typical); minimizes loading error on high-impedance sensor sources such as thermistors or photodiodes. |
| Common-Mode Input Range | 0 V to V+ − 1.5 V; accepts inputs from ground up to within 1.5 V of positive rail - simplifies design of battery-cell monitoring circuits. |
Pinout & Package
UPC277C(31)-A is housed in an 8-pin plastic TSSOP package (JEITA code P-TSSOP8-0225-0.65), measuring 4.4 mm × 3.15 mm × 1.2 mm with 0.65 mm lead pitch. This compact outline reduces PCB area by 60% versus standard SOP-8, supporting high-density layout in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel 1) | Accepts reference or sensed signal; compatible with GND-referenced inputs due to rail-to-rail common-mode range. |
| 2 | Non-Inverting Input (Channel 1) | Receives monitored signal; bias current flows out of pin (PNP input stage), requiring source impedance matching for offset minimization. |
| 3 | Output (Channel 1) | Open-collector NPN output; requires external pull-up resistor to define logic-high level and sink up to 16 mA. |
| 4 | GND | Power and signal reference ground; must be low-impedance connection to minimize noise coupling into sensitive analog inputs. |
| 5 | Non-Inverting Input (Channel 2) | Independent second comparator input; identical electrical characteristics to Pin 2 for dual-threshold or window-comparator designs. |
| 6 | Inverting Input (Channel 2) | Second channel inverting input; supports differential or independent signal routing without crosstalk. |
| 7 | Output (Channel 2) | Open-collector output; electrically isolated from Pin 3, enabling independent wired-OR bus connections per channel. |
| 8 | V+ | Positive supply rail; accepts +2 V to +32 V; decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Extended temperature grade | Rated for −40 °C to +125 °C operation - validated for automotive engine control units and industrial inverters without derating. |
| Low input offset voltage | ±2 mV typical ensures ≤10 mV total error in 12-bit ADC reference monitoring applications at 25 °C. |
| Open-collector outputs | Enable wired-OR logic, mixed-voltage interfacing (e.g., 3.3 V logic driving 5 V load), and direct LED/relay drive without level shifters. |
| Single-supply compatibility | Operates from +2 V to +32 V with inputs referenced to GND - eliminates need for negative rail in battery-powered or fieldbus systems. |
| High voltage gain | 200,000 typical gain provides sharp transition edges at output, reducing susceptibility to noise-induced false triggering in EMI-prone environments. |
Applications
| Motor Overcurrent Protection | DC Power Supply Monitoring |
|---|---|
|
Use Scenario: Detecting excessive current in BLDC motor phase legs via shunt resistor voltage drop. IC Role / Device Role / Timing Role: Dual comparator monitors upper/lower current thresholds simultaneously; one channel triggers shutdown, the other enables soft-start recovery. Use Value: 1.8 µs response time enables sub-microsecond fault capture before IGBT damage occurs; open-collector outputs interface directly with microcontroller reset lines. |
Use Scenario: Monitoring +12 V and +5 V rails in telecom power modules for undervoltage/overvoltage lockout. IC Role / Device Role / Timing Role: Each comparator independently compares rail voltage against precision reference; outputs feed OR-gated fault latch. Use Value: ±2 mV offset ensures ±10 mV accuracy at 5 V rail - sufficient to detect 2% deviation before system instability occurs. |
| Battery Cell Balancing Control | Industrial Sensor Threshold Detection |
|
Use Scenario: Comparing individual Li-ion cell voltages against 4.2 V cutoff in 16S BMS stacks. IC Role / Device Role / Timing Role: Two comparators per UPC277C(31)-A monitor adjacent cells; outputs enable passive bleed FETs when voltage exceeds threshold. Use Value: −40 °C to +125 °C rating supports operation inside sealed battery packs; low 17 nA bias current prevents measurement drift on high-resistance divider networks. |
Use Scenario: Converting analog output from pressure transducer (0–5 V) into digital alarm signals for HVAC controllers. IC Role / Device Role / Timing Role: Configured as window comparator with hysteresis; outputs indicate "normal", "high", or "low" pressure bands. Use Value: Common-mode input range extending to GND allows direct connection to ratiometric sensors; 16 mA sink current drives optocouplers for isolation-critical safety interlocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Wider supply range (+2 V to +36 V), but only rated −40 °C to +85 °C; 2.5 µs typical response vs. 1.8 µs for UPC277C(31)-A. | Preferred for commercial-grade consumer devices; unsuitable for under-hood automotive or high-temp industrial enclosures. | Select LM393DR only if ambient temperature remains below +85 °C and faster response is not required. |
| TL331IDBVR | Single-channel, SOT-23-5 package; lower quiescent current (60 µA vs. 1 mA), but no extended temperature option and 200 µs max propagation delay. | Used in ultra-low-power battery sensing; lacks dual-channel integration and speed needed for real-time protection. | Choose TL331IDBVR only for space-constrained, low-duty-cycle monitoring where dual channels and speed are unnecessary. |
Compared with LM393DR and TL331IDBVR, UPC277C(31)-A uniquely combines dual-channel functionality, 125 °C operation, and sub-2 µs response - making it the only viable option for compact, high-reliability industrial protection circuits requiring both speed and thermal robustness.
Availability
UPC277C(31)-A is available at Aetrix Electronics and suitable for industrial motor control, DC power supply supervision, and battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UPC277C(31)-A 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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT applications.
The UPC277 series belongs to Renesas' precision analog comparator product line, engineered specifically for high-reliability single-supply voltage comparison in harsh-temperature industrial and transportation systems.
FAQ
What is the maximum operating ambient temperature for UPC277C(31)-A?
The UPC277C(31)-A is rated for continuous operation from −40 °C to +125 °C ambient temperature. This extended grade is verified per Renesas' industrial qualification standards and supports deployment in engine compartments, industrial inverters, and outdoor power equipment without thermal derating below +125 °C.
Does UPC277C(31)-A support dual-supply operation?
Yes, UPC277C(31)-A supports dual-supply operation with ±1 V to ±16 V applied across V+ and V− terminals. However, its primary design focus is single-supply use (V− = GND), and all guaranteed specifications - including input common-mode range and output saturation voltage - are specified under that condition.
Can UPC277C(31)-A drive an LED directly?
Yes, UPC277C(31)-A can drive an LED directly via its open-collector output. With 16 mA typical sink current capability and 0.2 V typical saturation voltage at 4 mA, it supports standard indicator LEDs with appropriate series current-limiting resistors - eliminating need for external driver transistors in status-light applications.
What is the input bias current polarity and its impact on circuit design?
The UPC277C(31)-A uses a PNP-input stage, so input bias current flows *out* of both IN+ and IN− pins. This requires matched source impedances on both inputs to minimize offset voltage contribution - especially critical in high-impedance sensor interfaces like thermistor bridges or photodiode amplifiers.
Is UPC277C(31)-A RoHS compliant and halogen-free?
Yes, UPC277C(31)-A meets RoHS Directive 2011/65/EU requirements and is manufactured as a halogen-free device per Renesas' environmental compliance documentation. Full material declarations and certificate of compliance are available upon request through Aetrix Electronics' technical support portal.
UPC277C(31)-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
UPC277C(31)-A FAQ
1.How can I place an order for UPC277C(31)-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPC277C(31)-A 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 UPC277C(31)-A reliable?
The price and inventory of UPC277C(31)-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPC277C(31)-A is usually 5 days.
3.What payment methods are accepted for UPC277C(31)-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPC277C(31)-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPC277C(31)-A?
UPC277C(31)-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPC277C(31)-A 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 UPC277C(31)-A?
For technical support, including UPC277C(31)-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPC277C(31)-A requirements.
6.How does Aetrix verify that UPC277C(31)-A is sourced from the original manufacturer or authorized distributors?
All UPC277C(31)-A 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 UPC277C(31)-A meets industry standards.
7.What is the process for return or replacement of UPC277C(31)-A?
All UPC277C(31)-A units undergo pre-shipment inspection (PSI). If there is an issue with UPC277C(31)-A, 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 UPC277C(31)-A part is unused and in its original packaging.
Return procedure for UPC277C(31)-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UPC277C(31)-A Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
STMicroelectronics
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LM393DR
Texas Instruments
-
LM239DR
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LM339APWR
Texas Instruments
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LM2903P
Texas Instruments
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LM393ADR
Texas Instruments
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NCX2200GMAZ
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