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Texas Instruments TPS76918DBVTG4
- Part No.:
- TPS76918DBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76918DBVTG4.pdf
- Description:
- IC REG LINEAR 1.8V 100MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,953
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Product details
Overview
TPS76918DBVTG4 from Texas Instruments is a 100mA, low-dropout linear regulator with fixed 1.8V output, supporting 2.5V–16V input and featuring 1.2% output accuracy over load and temperature, 215mV typical dropout at 100mA, and integrated thermal shutdown and overcurrent protection. It powers microcontrollers and sensors in HVAC control modules.
For engineers reviewing the TPS76918DBVTG4 datasheet, TPS76918DBVTG4 pinout, TPS76918DBVTG4 application, or TPS76918DBVTG4 equivalent, key selection criteria include input voltage range (2.5–16V), output accuracy (±1.2%), PSRR (46dB at 1MHz), soft-start time (750µs), and minimum output capacitance (2.2µF).
Technical Context
The TPS76918DBVTG4 implements a PMOS pass transistor architecture enabling low dropout and high PSRR. Its internal soft-start circuit limits inrush current during power-up, reducing stress on upstream supplies and allowing smaller input capacitors.
It features undervoltage lockout (UVLO) with rising threshold of 2.2V and hysteresis of 130mV, plus enable logic with low-level disable threshold of 0.415V (max) - critical for controlled sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.8V ±1.2% over load and temperature - ensures stable core supply for low-voltage MCUs. |
| Input voltage range | 2.5V to 16V - supports direct regulation from 12V industrial rails or battery-backed 9V sources. |
| Max output current | 100mA - sufficient for sensor interfaces, real-time clocks, and low-power MCU peripherals. |
| Dropout voltage | 215mV (typ) at 100mA - enables operation down to VIN = 2.015V while maintaining regulation. |
| PSRR | 46dB at 1MHz - attenuates switching noise from upstream DC/DC converters without additional filtering. |
| Soft-start time | 750µs (typ) - controls output ramp rate to prevent system reset glitches during power-up. |
| Output capacitor | ≥2.2µF ceramic - enables compact, low-ESR stability without tantalum or electrolytic components. |
Pinout & Package
TPS76918DBVTG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, with RθJA = 178.6°C/W for standard PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply | Accepts 2.5V–16V input; requires ≥1µF decoupling capacitor placed adjacent to pin and GND. |
| 2 - GND | Ground reference | Common return path for input/output currents and internal bias; must be low-impedance connection. |
| 3 - EN | Enable control | Active-low logic input; drives low to enable regulator, high (>1.6V) to disable (IQ ≤ 2.75µA). |
| 4 - FB/NC | Feedback / No-connect | No connection (NC) for fixed-output variants like TPS76918DBVTG4; must remain unconnected. |
| 5 - OUT | Regulated output | Delivers 1.8V ±1.2%; requires ≥2.2µF ceramic capacitor with ESR ≤3Ω placed near pin and GND. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR at 1MHz | 46dB attenuation enables clean LDO output even when fed from noisy switchers. |
| Ultra-low quiescent current | 50–95µA (IQ) in active mode supports always-on monitoring circuits without battery drain. |
| Integrated fault protection | Thermal shutdown (173°C trip) and current limiting (370–450mA) prevent damage under overload or ambient extremes. |
| UVLO with hysteresis | 2.2V rising / 2.07V falling thresholds ensure reliable startup and brownout immunity across temperature. |
| Low-noise output | 165µVRMS (300Hz–50kHz) supports precision analog front-ends and ADC references. |
Applications
| Residential HVAC Control | Industrial Transportation Sensors |
|---|---|
Use Scenario: Regulating 1.8V supply for microcontroller-based thermostat logic and display drivers in split-system air conditioners. IC Role / Device Role / Timing Role: Primary LDO delivering stable core voltage to ARM Cortex-M0+ MCU and I²C temperature/humidity sensors. Use Value: 1.2% output accuracy maintains MCU clock stability and ADC reference integrity across –40°C to +125°C operating range. | Use Scenario: Powering CAN transceiver bias and position sensor interface in railcar door control units. IC Role / Device Role / Timing Role: Secondary LDO generating clean 1.8V for digital logic and level-shifting circuitry downstream of 5V system rail. Use Value: 46dB PSRR at 1MHz suppresses high-frequency noise from traction inverter gate drivers, preventing communication errors. |
| Washer/Dryer Mainboard | Smart Appliance IoT Module |
Use Scenario: Supplying 1.8V to EEPROM and real-time clock (RTC) in washing machine main control board. IC Role / Device Role / Timing Role: Always-on LDO maintaining RTC accuracy and nonvolatile memory retention during standby. Use Value: 0.9µA standby current (EN = VIN) extends battery backup life beyond 10 years in lithium coin-cell applications. | Use Scenario: Providing regulated 1.8V to Wi-Fi SoC RF section and secure element in connected dryer firmware update module. IC Role / Device Role / Timing Role: Low-noise LDO isolating sensitive RF analog blocks from digital switching noise on shared PCB. Use Value: 165µV RMS output noise prevents phase noise degradation in 2.4GHz transceiver local oscillator paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76918DBVR | Same silicon, tape-and-reel packaging (3000-unit reel vs. 250-unit cut tape); identical electrical specs. | No functional difference; suitable for high-volume automated assembly only. | Select TPS76918DBVR for SMT production runs requiring full reel delivery. |
| MCP1700T-1802E/TT | 100mA, 1.8V fixed LDO with 6V max input, 2% accuracy, no enable pin, higher dropout (375mV @ 100mA). | Lacks EN control and UVLO; unsuitable for sequenced multi-rail systems or wide-input industrial environments. | Choose MCP1700T-1802E/TT only for cost-sensitive consumer designs with ≤6V input and no sequencing requirements. |
Compared with TPS76918DBVTG4, TPS76918DBVR offers identical performance in bulk packaging, while MCP1700T-1802E/TT trades input voltage range, accuracy, and enable functionality for lower unit cost in constrained applications.
Availability
TPS76918DBVTG4 is available at Aetrix Electronics and suitable for residential HVAC control, industrial transportation sensor nodes, and smart appliance IoT modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS76918DBVTG4 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 specializing in analog and embedded processing technologies, with decades of expertise in power management ICs.
The TPS769 family targets space-constrained, wide-input industrial and appliance applications where high accuracy, low quiescent current, and robust fault protection are essential for reliable operation.
FAQ
What is the maximum input voltage rating for the TPS76918DBVTG4?
The TPS76918DBVTG4 has an absolute maximum input voltage of 18V, with recommended operating range up to 16V. Exceeding 18V risks permanent damage. This wide input capability allows direct regulation from 12V industrial rails or automotive battery-derived supplies, making the TPS76918DBVTG4 suitable for harsh environments where input transients may occur.
Does the TPS76918DBVTG4 require an external feedback resistor network?
No, the TPS76918DBVTG4 is a fixed-output 1.8V regulator and does not require external feedback resistors. Pin 4 (FB/NC) is designated as "No Connection" and must remain unconnected. This simplifies layout and eliminates resistor tolerance errors that could affect output accuracy - a key advantage over adjustable LDOs when precise, factory-trimmed voltage is required.
What is the typical dropout voltage of the TPS76918DBVTG4 at full load?
The TPS76918DBVTG4 exhibits a typical dropout voltage of 215mV at 100mA output current and 25°C. At worst-case conditions (–40°C to +125°C), dropout rises to 218mV. This enables regulation down to VIN = 2.015V while maintaining 1.8V output, supporting operation from partially discharged batteries or low-headroom intermediate rails.
Can the TPS76918DBVTG4 be used with ceramic output capacitors?
Yes, the TPS76918DBVTG4 is explicitly designed for ceramic output capacitors with minimum value 2.2µF and ESR ≤3Ω. Unlike older LDOs requiring high-ESR tantalum capacitors for stability, this device uses internal compensation optimized for low-ESR ceramics - reducing board area, improving reliability, and eliminating ESR-related aging effects.
How does the enable (EN) pin function on the TPS76918DBVTG4?
The EN pin on the TPS76918DBVTG4 is active-low: driving it below 0.415V (max) disables the regulator, reducing quiescent current to ≤2.75µA; pulling it above 1.6V (min) enables regulation. This allows precise power sequencing in multi-rail systems and ultra-low-power sleep modes - critical for battery-operated appliances and always-on sensor nodes using the TPS76918DBVTG4.
TPS76918DBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 28 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS76918DBVTG4 FAQ
1.How can I place an order for TPS76918DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76918DBVTG4 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 TPS76918DBVTG4 reliable?
The price and inventory of TPS76918DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76918DBVTG4 is usually 5 days.
3.What payment methods are accepted for TPS76918DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76918DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76918DBVTG4?
TPS76918DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76918DBVTG4 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 TPS76918DBVTG4?
For technical support, including TPS76918DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76918DBVTG4 requirements.
6.How does Aetrix verify that TPS76918DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS76918DBVTG4 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 TPS76918DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS76918DBVTG4?
All TPS76918DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76918DBVTG4, 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 TPS76918DBVTG4 part is unused and in its original packaging.
Return procedure for TPS76918DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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