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Texas Instruments TPS77050DBVRG4
- Part No.:
- TPS77050DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS77050DBVRG4.pdf
- Description:
- IC REG LINEAR 5V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,807
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Product details
Overview
TPS77050DBVRG4 from Texas Instruments is a fixed-output 5.0V, ultra-low-power (50µA quiescent current), low-dropout linear regulator in SOT-23-5 package, supporting 2.5V–16V input and delivering up to 100mA output with ±1.2% accuracy over load/temperature. It integrates thermal shutdown, overcurrent protection, undervoltage lockout (UVLO), and enable control - designed for biasing microcontrollers and sensors in HVAC and industrial transportation systems.
For engineers reviewing the TPS77050DBVRG4 datasheet, TPS77050DBVRG4 pinout, TPS77050DBVRG4 application, or TPS77050DBVRG4 equivalent, key selection criteria include dropout voltage (150mV typ at 100mA), PSRR (46dB at 1MHz), soft-start time (750µs), minimum 2.2µF output capacitance, and −40°C to +125°C operating junction temperature.
Technical Context
The TPS77050DBVRG4 implements a PMOS pass transistor architecture enabling low dropout and high PSRR. Its internal 1.2V reference feeds an error amplifier that regulates output via feedback (FB pin) for adjustable variants; the fixed 5.0V version uses internal resistor divider, rendering FB/NC pin unconnected.
It features active UVLO (rising threshold 2.4V, hysteresis 130mV), logic-level enable (EN pin thresholds: 0.415V low / 1.6V high), and integrated soft-start limiting inrush current. Thermal shutdown activates at 173°C and resets at 157°C, ensuring robust fault recovery in thermally constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±1.2% over full load (0–100mA) and temperature (−40°C to +125°C) |
| Input Voltage Range | 2.5V to 16V - supports direct regulation from 12V rails or automotive battery transients |
| Dropout Voltage | 150mV typical at 100mA - enables stable 5V output from 5.15V input under full load |
| Quiescent Current | 55–95µA (fixed version, IOUT = 0mA) - preserves battery life in always-on sensor nodes |
| PSRR | 46dB at 1MHz - attenuates switching noise from upstream DC/DC converters without added filtering |
| Output Capacitance | ≥2.2µF ceramic (ESR ≤3Ω) - enables compact, low-ESR capacitor selection for space-constrained PCBs |
| Enable Threshold | EN low ≤0.415V, high ≥1.6V - compatible with 1.8V/3.3V logic without level-shifting |
Pinout & Package
TPS77050DBVRG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, with RθJA = 178.6°C/W (JEDEC 2s2p board). The package supports surface-mount reflow and is optimized for thermal performance in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input supply connection | Accepts 2.5V–16V; requires 1µF decoupling capacitor placed adjacent to IN/GND pins |
| 2: GND | Power ground reference | Common return path for input/output currents and internal circuitry; must be low-impedance |
| 3: EN | Active-high enable control | Pull low to disable regulator (standby current ≤2.75µA); driven by MCU GPIO or system power sequencer |
| 4: FB/NC | Feedback input / No-connect | Not connected in fixed-output TPS77050DBVRG4; must remain floating (no external connection) |
| 5: OUT | Regulated 5.0V output | Delivers up to 100mA; requires ≥2.2µF ceramic capacitor with ESR ≤3Ω placed adjacent to OUT/GND |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 55–95µA at zero load enables >10-year battery life in 10µA-sleep IoT nodes |
| Integrated UVLO | 2.4V rising / 2.07V falling threshold prevents erratic startup during brownout conditions |
| Internal soft-start | 750µs typical ramp time limits input inrush, reducing stress on upstream capacitors and traces |
| Thermal & overcurrent protection | Auto-recovery shutdown at 173°C and current limit of 370–450mA prevent permanent damage |
| High PSRR bandwidth | 58dB at 1kHz and 46dB at 1MHz suppresses ripple from switching regulators across wide frequency range |
Applications
| Residential Air Conditioners | HVAC Systems |
|---|---|
Use Scenario: Powering microcontroller-based thermostat logic and display backlight drivers. IC Role / Device Role / Timing Role: Primary 5V bias rail generator for MCU, sensors, and interface ICs. Use Value: Stable 5.0V output with ±1.2% accuracy ensures reliable ADC readings and UART communication across −40°C to +85°C ambient. | Use Scenario: Supplying control logic in variable-frequency drive (VFD) front-end boards. IC Role / Device Role / Timing Role: Regulated 5V source for gate driver bias and isolated feedback circuitry. Use Value: 150mV dropout allows operation from 5.15V intermediate rail, minimizing heat dissipation in sealed enclosures. |
| Washers and Dryers | Industrial Transportation |
Use Scenario: Providing clean 5V power to touch-panel controllers and motor position sensors. IC Role / Device Role / Timing Role: Low-noise LDO for analog signal conditioning and real-time clock backup. Use Value: 165µVRMS output noise (BW: 300Hz–50kHz) prevents digitization errors in 12-bit sensor interfaces. | Use Scenario: Biasing CAN transceivers and diagnostic microcontrollers in railcar control units. IC Role / Device Role / Timing Role: Enable-controlled 5V supply synchronized with vehicle ignition state. Use Value: EN pin compatibility with 1.8V/3.3V logic enables direct MCU control without external level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76950DBVR | Legacy variant: 3% output accuracy, 71mV dropout at 100mA, 4.7µF min COUT, 13.5V max VIN | Lower accuracy and higher dropout limit use in precision or low-input-voltage designs | Select when legacy qualification or lower cost is prioritized over PSRR and thermal performance |
| MCP1700T-5002E/MB | Microchip part: 2% accuracy, 178mV dropout at 250mA, 1.6µF min COUT, 6V max VIN | Lower input voltage ceiling restricts use to 3.3V/5V system rails only | Choose for cost-sensitive consumer appliances where 12V input capability is unnecessary |
Compared with TPS77050DBVRG4, TPS76950DBVR trades accuracy and PSRR for legacy compatibility, while MCP1700T-5002E/MB offers higher current but sacrifices input voltage range and thermal robustness - making TPS77050DBVRG4 optimal for automotive-grade 12V-bus applications requiring precision and reliability.
Availability
TPS77050DBVRG4 is available at Aetrix Electronics and suitable for residential air conditioners, HVAC systems, and industrial transportation equipment requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.
Supply support for TPS77050DBVRG4 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, embedded processing, and connectivity technologies, with decades of expertise in power management ICs.
The TPS770 family targets ultra-low-power, high-PSRR LDO applications in battery-powered and automotive systems - emphasizing precision regulation, thermal resilience, and enable-controlled sequencing.
FAQ
What is the maximum input voltage rating for TPS77050DBVRG4?
The TPS77050DBVRG4 has an absolute maximum input voltage of 18V, with recommended operation up to 16V. Exceeding 18V risks permanent damage. This 16V operating ceiling enables direct regulation from 12V automotive or industrial rails, including transient spikes within ISO 7637-2 compliance limits. Always verify input transient suppression in final design.
Does TPS77050DBVRG4 require an external feedback resistor network?
No, TPS77050DBVRG4 is a fixed 5.0V output variant and does not require external feedback resistors. Pin 4 (FB/NC) is internally disconnected and must remain unconnected - floating - in this configuration. Connecting it risks instability or regulation failure. The device uses an internal resistor divider referenced to its 1.2V bandgap.
What is the minimum output capacitance required for stability with TPS77050DBVRG4?
The TPS77050DBVRG4 requires a minimum 2.2µF ceramic output capacitor with ESR ≤3Ω for guaranteed stability across all operating conditions. Using less capacitance or higher ESR may cause oscillation or poor transient response. TI recommends X5R/X7R dielectrics rated for ≥6.3V and derated to ≥1.1µF effective value at bias.
How does the enable (EN) pin function on TPS77050DBVRG4?
The EN pin on TPS77050DBVRG4 is active-high: driving it ≥1.6V enables regulation, while ≤0.415V disables the output and reduces quiescent current to ≤2.75µA. The pin has negligible input current (±0.02µA), allowing direct drive from low-power MCU GPIOs without loading. No external pull-up is required unless default-enable behavior is needed.
What thermal protection features are built into TPS77050DBVRG4?
TPS77050DBVRG4 includes thermal shutdown that activates at 173°C junction temperature and auto-resets at 157°C. It also integrates overcurrent protection with a 370–450mA current limit. These features operate independently and recover without external intervention, protecting both the IC and downstream circuitry during overload or poor heatsinking conditions.
TPS77050DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.09V @ 50mA
- Current - Output:
- 50mA
- 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
TPS77050DBVRG4 FAQ
1.How can I place an order for TPS77050DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS77050DBVRG4 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 TPS77050DBVRG4 reliable?
The price and inventory of TPS77050DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS77050DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS77050DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS77050DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS77050DBVRG4?
TPS77050DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS77050DBVRG4 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 TPS77050DBVRG4?
For technical support, including TPS77050DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS77050DBVRG4 requirements.
6.How does Aetrix verify that TPS77050DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS77050DBVRG4 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 TPS77050DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS77050DBVRG4?
All TPS77050DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS77050DBVRG4, 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 TPS77050DBVRG4 part is unused and in its original packaging.
Return procedure for TPS77050DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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