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Texas Instruments TPS77033DBVTG4
- Part No.:
- TPS77033DBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS77033DBVTG4.pdf
- Description:
- IC REG LINEAR 3.3V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,490
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Product details
Overview
TPS77033DBVTG4 from Texas Instruments is a fixed-output 3.3V, ultra-low-power (50µA quiescent current), low-dropout linear regulator in 5-pin SOT-23 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 battery-powered industrial sensors and automotive body electronics.
For engineers reviewing the TPS77033DBVTG4 datasheet, TPS77033DBVTG4 pinout, TPS77033DBVTG4 application, or TPS77033DBVTG4 equivalent, key selection criteria include dropout voltage at 100mA (150mV typ), PSRR of 46dB at 1MHz, internal soft-start (750µs), and compatibility with ≥2.2µF ceramic output capacitors for stable operation in space-constrained embedded systems.
Technical Context
The TPS77033DBVTG4 implements a PMOS pass transistor architecture enabling low dropout and high PSRR across wide frequency range (70dB at 1kHz, 46dB at 1MHz). Its integrated UVLO (rising threshold 2.2V, hysteresis 130mV) and enable logic (EN low = active) support robust power sequencing in automotive subsystems.
Thermal performance is characterized by RθJA = 178.6°C/W on JEDEC 2s2p board; internal soft-start limits inrush current, reducing required input capacitance. The device operates across –40°C to +125°C ambient temperature with guaranteed stability using 2.2µF–200µF output capacitors with ESR ≤3Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±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 automotive rails or 3.3V/5V intermediate supplies |
| Dropout Voltage | 150mV (typ) at 100mA - enables stable 3.3V output even when input drops to 3.45V |
| Quiescent Current | 50–95µA (typ) at no load - extends battery life in always-on sensor nodes |
| PSRR | 46dB at 1MHz - suppresses switching noise from upstream DC/DC converters without added filtering |
| Thermal Shutdown | Triggers at 173°C junction, resets at 157°C - protects against sustained overload or poor PCB heatsinking |
| Enable Threshold | EN high = ≥1.6V, EN low = ≤0.415V - compatible with 1.8V/3.3V logic without level-shifting |
Pinout & Package
TPS77033DBVTG4 uses the DBV (5-pin SOT-23) package, measuring 2.9mm × 2.8mm with standard lead pitch and thermal pad omitted. RθJA = 178.6°C/W under JEDEC 2s2p test conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply connection | Accepts 2.5V–16V; requires ≥1µF ceramic capacitor placed adjacent to IN/GND pins |
| 2 - GND | Power ground reference | Common return path for input/output currents; must be low-impedance PCB plane |
| 3 - EN | Active-low enable control | Pulling below 0.415V enables regulator; floating or >1.6V disables output |
| 4 - FB/NC | Feedback / No-connect | No connection (fixed 3.3V version); must remain unconnected per datasheet |
| 5 - OUT | Regulated output | Delivers 3.3V ±1.2%; requires ≥2.2µF ceramic capacitor with ESR ≤3Ω for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 50–95µA typical at zero load - enables multi-year operation on coin-cell batteries |
| High-frequency PSRR | 46dB at 1MHz - reduces need for post-regulator LC filters in noisy power domains |
| Integrated soft-start | 750µs typical startup time - prevents inrush current spikes that destabilize upstream supplies |
| Wide-input ESR tolerance | Stable with 0–3Ω output capacitor ESR - supports low-cost ceramic or polymer capacitors |
| Automotive-grade thermal protection | 173°C shutdown with 16°C hysteresis - ensures reliability in under-hood environments |
Applications
| Industrial Sensor Node | Automotive Body Control Module |
|---|---|
Use Scenario: Low-power temperature/humidity sensor operating from CR2032 battery with 10-year lifetime requirement. IC Role / Device Role / Timing Role: Primary 3.3V bias rail generator for MCU, RF transceiver, and analog front-end. Use Value: 50µA quiescent current and 150mV dropout extend battery life while maintaining regulation down to 3.45V input. | Use Scenario: Powering door-lock actuator microcontroller and CAN transceiver in 12V vehicle electrical system. IC Role / Device Role / Timing Role: Secondary LDO supplying clean 3.3V to digital logic during cold-crank (6V min) and load-dump (18V max) events. Use Value: 2.5V–16V input range and UVLO (2.2V rising) ensure reliable start-up and brownout recovery across automotive battery transients. |
| Residential HVAC Controller | Smart Appliance MCU Subsystem |
Use Scenario: Mainboard power management for Wi-Fi-enabled thermostat with display, sensors, and wireless connectivity. IC Role / Device Role / Timing Role: Fixed 3.3V regulator for ARM Cortex-M4 MCU and 2.4GHz transceiver IC. Use Value: 46dB PSRR at 1MHz attenuates switching noise from primary 5V buck converter, eliminating RF interference in wireless comms. | Use Scenario: Powering real-time clock, EEPROM, and touch controller in washing machine main control board. IC Role / Device Role / Timing Role: Always-on 3.3V supply enabling instant wake-from-sleep and data retention during power cycles. Use Value: Enable pin allows precise power gating; standby current <2.75µA preserves energy during idle states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76933DBVR | Legacy variant: 3% output accuracy, 71mV dropout at 100mA, 4.7µF min COUT, 2.7V–10V input | Suitable for cost-sensitive industrial designs where tighter accuracy and wider input range not required | Select if legacy qualification, lower BOM cost, or compatibility with existing 4.7µF capacitor footprints is prioritized |
| MCP1700T-3302E/TT | Microchip part: 250mA output, 6µA IQ, 600mV dropout at 250mA, SOT-23-5, 2.7V–13.2V input | Better for higher-current loads but lower PSRR (40dB @ 1MHz) and no UVLO or thermal shutdown | Choose when >100mA output or ultra-low IQ dominates requirements, and protection features are handled externally |
Compared with TPS76933DBVR, the TPS77033DBVTG4 offers tighter accuracy (±1.2% vs ±3%), higher input voltage (16V vs 10V), and integrated UVLO - critical for automotive and wide-input industrial use. Against MCP1700T-3302E/TT, it trades higher IQ for superior transient response, PSRR, and built-in fault protection.
Availability
TPS77033DBVTG4 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body electronics, and residential HVAC controllers requiring stable component supply with long-term lifecycle assurance.
Supply support for TPS77033DBVTG4 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 power management technologies with decades of automotive and industrial qualification expertise.
The TPS770 family targets ultra-low-power, high-PSRR LDO applications in battery-operated and harsh-environment systems - emphasizing precision regulation, robust protection, and minimal external components.
FAQ
What is the maximum input voltage rating for the TPS77033DBVTG4?
The TPS77033DBVTG4 has an absolute maximum input voltage of 18V. Its recommended operating input range is 2.5V to 16V, making it suitable for direct connection to 12V automotive systems and industrial 15V rails. Operation beyond 16V is not recommended for continuous use due to thermal and reliability constraints.
Does the TPS77033DBVTG4 require an external feedback resistor network?
No, the TPS77033DBVTG4 is a fixed-output 3.3V regulator. Pin 4 (FB/NC) is designated as "No Connection" and must remain unconnected. External resistors are only required for adjustable versions like the TPS77001; adding them to the TPS77033DBVTG4 would violate the datasheet specification and risk instability.
What is the minimum output capacitor value required for stable operation of the TPS77033DBVTG4?
The TPS77033DBVTG4 requires a minimum output capacitor of 2.2µF ceramic with ESR ≤3Ω for guaranteed stability across all operating conditions. Using less than 2.2µF or exceeding the ESR limit may cause oscillation or poor transient response, especially under dynamic load changes.
How does the enable (EN) pin function on the TPS77033DBVTG4?
The EN pin on the TPS77033DBVTG4 is active-low: pulling it below 0.415V (max) enables regulation, while driving it above 1.6V (min) disables the output. When disabled, the device draws ≤2.75µA standby current and actively pulls the OUT pin to GND via an internal pulldown, preventing floating outputs in system sleep modes.
Is the TPS77033DBVTG4 qualified for automotive applications?
The TPS77033DBVTG4 is not AEC-Q100 qualified. However, its –40°C to +125°C operating junction temperature range, integrated UVLO (2.2V rising threshold), thermal shutdown (173°C), and 16V input capability make it suitable for non-safety-critical automotive body electronics such as door modules and climate controls - subject to customer-level qualification.
TPS77033DBVTG4 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.1V @ 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
TPS77033DBVTG4 FAQ
1.How can I place an order for TPS77033DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS77033DBVTG4 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 TPS77033DBVTG4 reliable?
The price and inventory of TPS77033DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS77033DBVTG4 is usually 5 days.
3.What payment methods are accepted for TPS77033DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS77033DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS77033DBVTG4?
TPS77033DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS77033DBVTG4 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 TPS77033DBVTG4?
For technical support, including TPS77033DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS77033DBVTG4 requirements.
6.How does Aetrix verify that TPS77033DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS77033DBVTG4 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 TPS77033DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS77033DBVTG4?
All TPS77033DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS77033DBVTG4, 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 TPS77033DBVTG4 part is unused and in its original packaging.
Return procedure for TPS77033DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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