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Texas Instruments TLV4051R1YKAR
- Part No.:
- TLV4051R1YKAR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
TLV4051R1YKAR.pdf
- Description:
- IC COMPARATOR 1 VOL REF 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,317
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Product details
Overview
TLV4051R1YKAR from Texas Instruments is a precision, low-power, inverting-input comparator with 1.2 V internal reference, push-pull output, and 360 ns propagation delay. It operates from 1.6 V to 5.5 V supply, draws only 2 µA quiescent current, and functions across –40°C to +125°C - ideal for battery voltage monitoring and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the TLV4051R1YKAR datasheet, TLV4051R1YKAR pinout, TLV4051R1YKAR application, or TLV4051R1YKAR equivalent, key selection factors include its factory-trimmed 1.2 V threshold (±0.5% at 25°C), precision hysteresis (20 mV), rail-to-rail input stage, known power-on reset behavior, and dual-package availability (DSBGA YKA / SOT-23).
Technical Context
The TLV4051R1YKAR implements an inverting-input architecture where the external signal is applied to the IN pin and compared against a factory-trimmed 1.2 V internal reference. Its push-pull output drives high when IN < VIT− (1.174 V typ) and low when IN > VIT+ (1.206 V typ) at 25°C, enabling clean digital transitions without external pull-up.
It integrates a Power-On Reset (POR) circuit that holds the output low during power ramp-up until VS ≥ 1.45 V, ensuring deterministic startup. Precision hysteresis (20 mV) rejects noise on slow-moving inputs, and rail-to-rail input operation supports detection down to V− and up to V+ across the full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - enables direct operation from single-cell Li-ion (3.0–4.2 V) or low-voltage logic rails (1.8 V, 3.3 V) |
| Reference Voltage | 1.2 V ±0.5% at 25°C - factory-trimmed threshold eliminates external resistor divider for 1.2 V detection |
| Propagation Delay | 360 ns at 3.3 V, 15 pF load - supports fast fault response in power management and system monitoring |
| Quiescent Current | 2 µA at 25°C - extends battery life in always-on monitoring circuits |
| Input Hysteresis | 20 mV - suppresses false triggering from EMI or ripple on input signals |
| Operating Temperature | –40°C to +125°C - qualified for automotive cabin, industrial, and harsh-environment applications |
| Output Type | Push-pull - drives high/low actively without external pull-up, simplifying interface to MCU GPIO or logic |
Pinout & Package
TLV4051R1YKAR is available in two packages: ultra-small 0.73 mm × 0.73 mm DSBGA (YKA, 4-bump) and industry-standard SOT-23 (DBV, 5-pin). The YKA package uses a 2×2 bump layout; the SOT-23 includes a no-connect (NC) pin (Pin 3) for mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Connects to main system rail (1.6–5.5 V); powers internal reference and output stage |
| V− | Negative supply input | Typically ground; defines lower bound of input common-mode and output swing |
| IN | Inverting input | Applied signal is compared against internal 1.2 V reference; output goes low when IN exceeds threshold |
| OUT | Push-pull output | Drives actively high (to V+) or low (to V−); compatible with CMOS/TTL loads without pull-up |
| NC (SOT-23 only) | No-connect terminal | Not bonded internally; may be grounded for improved thermal/mechanical performance |
Key Features
| Feature | Design Value |
|---|---|
| Inverting input configuration | Enables direct overvoltage detection: rising input triggers low output, simplifying fault-signaling logic |
| Factory-trimmed 1.2 V reference | Eliminates external resistor network and associated tolerance stack-up for precise 1.2 V threshold detection |
| Known POR startup | Output held low during power ramp-up until VS ≥ 1.45 V - prevents spurious resets in power sequencing |
| Rail-to-rail input stage | Accepts input signals from V− to V+, supporting detection of ground-referenced or rail-referenced voltages |
| 20 mV precision hysteresis | Rejects noise up to ±10 mV on input without requiring external hysteresis resistors |
Applications
| Lithium-Ion Battery Monitoring | Point-of-Load Voltage Supervision |
|---|---|
Use Scenario: Real-time monitoring of cell voltage during charge/discharge cycles in wearables or medical devices. IC Role / Device Role / Timing Role: TLV4051R1YKAR compares battery voltage against 1.2 V reference to detect end-of-discharge or overvoltage conditions. Use Value: 2 µA quiescent current minimizes standby drain; 360 ns response ensures rapid shutdown before damage occurs. | Use Scenario: Detecting undervoltage or overvoltage faults on DC/DC converter outputs in FPGA or ASIC power rails. IC Role / Device Role / Timing Role: TLV4051R1YKAR acts as a dedicated supervisor, asserting a fault flag when output deviates beyond ±5% of nominal 1.2 V rail. Use Value: Factory-trimmed 1.2 V reference provides ±0.5% accuracy at 25°C - tighter than typical external resistor-divider solutions. |
| Industrial System Control | Automotive Cabin Electronics |
Use Scenario: Monitoring auxiliary supply rails in programmable logic controllers (PLCs) operating across wide temperature ranges. IC Role / Device Role / Timing Role: TLV4051R1YKAR provides robust voltage validation with 20 mV hysteresis to reject switching noise from nearby motor drivers. Use Value: Guaranteed operation from –40°C to +125°C and 1.6–5.5 V supply range supports unregulated 5 V or 3.3 V industrial rails. | Use Scenario: Supervising 1.2 V I/O supply for infotainment microcontrollers in vehicle cabin modules. IC Role / Device Role / Timing Role: TLV4051R1YKAR delivers fail-safe power-good signaling with deterministic POR behavior during cold-crank events. Use Value: Push-pull output drives MCU interrupt pin directly; no external components required for reliable wake-up signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV4041R1YFPR | Non-inverting input, same 1.2 V reference and push-pull output | Requires inverted logic interpretation: high output indicates input > threshold | Select when system design expects active-high fault indication without logic inversion |
| TLV4051R5YKAR | Same inverting input and push-pull output, but 0.5 V reference instead of 1.2 V | Optimized for lower-threshold detection (e.g., 0.5 V current-sense amplifier outputs) | Select when monitoring sub-1 V signals; not interchangeable without circuit redesign |
Compared with TLV4041R1YFPR and TLV4051R5YKAR, the TLV4051R1YKAR uniquely combines inverting logic, 1.2 V precision reference, and push-pull drive - making it optimal for direct overvoltage flagging on 1.2 V rails without external inversion or level-shifting.
Availability
TLV4051R1YKAR is available at Aetrix Electronics and suitable for lithium-ion battery monitoring, point-of-load supervision, and industrial system control requiring stable component supply, long-term manufacturability, and AEC-Q200-aligned reliability.
Supply support for TLV4051R1YKAR 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
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with deep expertise in precision analog, low-power design, and automotive-grade qualification.
The TLV40x1 product line was designed specifically for compact, low-quiescent-current voltage detection in battery-powered and space-constrained systems - emphasizing factory-trimmed references, deterministic startup, and noise-immune hysteresis.
FAQ
What is the input configuration of the TLV4051R1YKAR?
The TLV4051R1YKAR features an inverting input configuration: when the voltage at the IN pin exceeds the internal 1.2 V reference (VIT+ = 1.206 V typ at 25°C), the push-pull output switches low; when IN falls below VIT− (1.174 V typ), the output switches high. This behavior is confirmed in Table 8-1 of the TLV4051R1YKAR datasheet and enables direct overvoltage fault signaling.
Does the TLV4051R1YKAR require external components to set its threshold?
No. The TLV4051R1YKAR integrates a factory-trimmed 1.2 V precision reference, eliminating the need for external resistor dividers to establish the comparison threshold. This reduces BOM count, PCB area, and tolerance-related inaccuracies - a key advantage over general-purpose comparators requiring external references.
What is the guaranteed propagation delay for TLV4051R1YKAR?
The TLV4051R1YKAR has a typical propagation delay of 360 ns under standard test conditions (VS = 3.3 V, CL = 15 pF, input overdrive = 100 mV). This value is specified in the Switching Characteristics table (Section 6.6) and applies across the full operating temperature range (–40°C to +125°C) and supply range (1.6 V to 5.5 V).
How does the Power-On Reset (POR) function in TLV4051R1YKAR?
The TLV4051R1YKAR's POR circuit holds the push-pull output low while the supply voltage ramps up until VS reaches 1.45 V. Once VS ≥ 1.45 V, the comparator begins normal operation, reflecting the state of the IN pin. This behavior is documented in Section 8.4.1 and ensures glitch-free startup in systems with uncontrolled power sequencing.
Can TLV4051R1YKAR operate from a 1.8 V supply?
Yes. The TLV4051R1YKAR is fully specified to operate from 1.6 V to 5.5 V, including 1.8 V. At 1.8 V, it maintains 2 µA quiescent current (typ), 1.2 V reference accuracy (±1% over temperature), and 360 ns propagation delay - making it suitable for ultra-low-voltage applications such as energy-harvesting sensors and coin-cell-powered devices.
TLV4051R1YKAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 4-XFBGA, DSBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- -
- Voltage - Input Offset (Max):
- 10pA @ 5V
- Current - Input Bias (Max):
- 50mA @ 5V
- Current - Output (Typ):
- 3.5µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 360ns
- Propagation Delay (Max):
- 20mV
- Hysteresis:
- -40°C ~ 125°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 4-DSBGA
TLV4051R1YKAR FAQ
1.How can I place an order for TLV4051R1YKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV4051R1YKAR 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 TLV4051R1YKAR reliable?
The price and inventory of TLV4051R1YKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV4051R1YKAR is usually 5 days.
3.What payment methods are accepted for TLV4051R1YKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV4051R1YKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV4051R1YKAR?
TLV4051R1YKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV4051R1YKAR 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 TLV4051R1YKAR?
For technical support, including TLV4051R1YKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV4051R1YKAR requirements.
6.How does Aetrix verify that TLV4051R1YKAR is sourced from the original manufacturer or authorized distributors?
All TLV4051R1YKAR 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 TLV4051R1YKAR meets industry standards.
7.What is the process for return or replacement of TLV4051R1YKAR?
All TLV4051R1YKAR units undergo pre-shipment inspection (PSI). If there is an issue with TLV4051R1YKAR, 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 TLV4051R1YKAR part is unused and in its original packaging.
Return procedure for TLV4051R1YKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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