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Texas Instruments TPS76901DBVTG4
- Part No.:
- TPS76901DBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76901DBVTG4.pdf
- Description:
- IC REG LIN POS ADJ 100MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,379
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Product details
Overview
TPS76901DBVTG4 from Texas Instruments is an adjustable-output, 100mA low-dropout linear regulator supporting 2.5V–16V input and 1.2V–5.5V output. It delivers ±1.2% output accuracy over load and temperature, features 46dB PSRR at 1MHz, integrated thermal shutdown and overcurrent protection, and operates in a 5-pin SOT-23 package for space-constrained industrial power rails.
For engineers reviewing the TPS76901DBVTG4 datasheet, TPS76901DBVTG4 pinout, TPS76901DBVTG4 application, or TPS76901DBVTG4 equivalent, key selection criteria include dropout voltage (215mV typ @100mA), soft-start time (750µs), minimum output capacitance (2.2µF), UVLO thresholds (2.2V rising / 1.9V falling), and ESR-stable operation with ceramic capacitors.
Technical Context
The TPS76901DBVTG4 implements a precision bandgap reference, error amplifier, and P-channel pass transistor to achieve low dropout and high line/load regulation. Its internal soft-start circuit limits inrush current during enable, reducing required input capacitance and easing system-level power sequencing.
It supports stable operation with low-ESR ceramic capacitors (0–3Ω recommended) and includes undervoltage lockout (UVLO) with 130mV hysteresis to prevent erratic startup under brownout conditions. The device's feedback pin (FB) enables precise external resistor-based output voltage programming across the full 1.2V–5.5V range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 16V - supports direct regulation from 12V industrial rails and battery-backed systems up to 16V absolute max. |
| Output Voltage Range | Adjustable 1.2V to 5.5V - configured via external resistive divider on FB pin for flexible biasing of MCUs, sensors, or analog circuitry. |
| Max Output Current | 100mA - sufficient for powering low-power microcontrollers, I/O buffers, and sensor signal chains without external boost. |
| Output Accuracy | ±1.2% over load and temperature - ensures stable reference voltage for ADCs, DACs, and precision analog subsystems. |
| Dropout Voltage | 215mV (typ) at 100mA - enables high-efficiency regulation even near minimum input voltage, critical for battery-powered longevity. |
| PSRR @ 1MHz | 46dB - attenuates switching noise from upstream DC/DC converters, minimizing need for additional post-regulation filtering. |
| Soft-Start Time | 750µs (typ) - controls output ramp rate to limit inrush current and avoid supply rail sag during power-up. |
| UVLO Thresholds | Rising: 2.2V, Falling: 1.9V - prevents unstable operation during cold start or weak input sources, with 130mV hysteresis for noise immunity. |
Pinout & Package
TPS76901DBVTG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, with RθJA = 178.6°C/W for thermal management in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input supply connection | Accepts 2.5V–16V input; requires ≥1µF ceramic capacitor placed adjacent to IN/GND pins for stability and transient response. |
| 2: GND | Power ground reference | Common return path for input/output currents; must be low-impedance and directly connected to system ground plane. |
| 3: EN | Enable control input | Active-low logic input; drives low to enable regulator, high to disable (standby current ≤2.75µA); threshold is 0.415V (low) / 1.6V (high). |
| 4: FB/NC | Feedback input (adjustable) / No connect (fixed) | For TPS76901DBVTG4 (adjustable version): connects to resistor divider to set VOUT; floating or incorrect termination causes regulation failure. |
| 5: OUT | Regulated output | Delivers stable output; requires ≥2.2µF ceramic capacitor with ESR ≤3Ω placed adjacent to OUT/GND pins for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated fault protection | Thermal shutdown (trip at 173°C, reset at 157°C) and current limiting (370–450mA) prevent damage during overload or ambient overheating. |
| Low-ESR capacitor support | Stable with 0–3Ω ESR ceramic capacitors - eliminates need for bulk electrolytic or tantalum, reducing board area and improving reliability. |
| Ultra-low quiescent current | 50–95µA (adjustable/fixed) at zero load - extends battery life in always-on monitoring or wake-on-event applications. |
| High PSRR bandwidth | >70dB at 1kHz and 46dB at 1MHz - suppresses ripple from switchers operating at common frequencies (e.g., 500kHz–2MHz DC/DC stages). |
| UVLO with hysteresis | 2.2V rising / 1.9V falling threshold with 130mV hysteresis - ensures clean, bounce-free startup and shutdown under marginal input conditions. |
| Enable-controlled standby | Standby current ≤2.75µA when EN = VIN - allows deep-sleep modes in portable or energy-harvesting systems without external switches. |
Applications
| Industrial Motor Control | HVAC Sensor Interface |
|---|---|
Use Scenario: Powering position encoders, Hall-effect sensors, and gate driver bias rails in variable-frequency drives. IC Role / Device Role / Timing Role: Provides clean, regulated 3.3V or 5V bias for analog front-ends and isolated communication interfaces. Use Value: 46dB PSRR at 1MHz suppresses high-frequency noise from IGBT switching, preserving signal integrity in feedback loops. | Use Scenario: Supplying temperature/humidity sensors, fan motor controllers, and display modules in residential HVAC units. IC Role / Device Role / Timing Role: Delivers stable 2.5V or 3.3V from 12V system rail with thermal robustness across –40°C to +125°C ambient. Use Value: ±1.2% output accuracy ensures consistent ADC reference voltage, enabling sub-0.5°C temperature measurement resolution. |
| Smart Appliance MCU Bias | Industrial Transportation Telematics |
Use Scenario: Regulating power for ARM Cortex-M0+ microcontrollers in washing machines and dryers. IC Role / Device Role / Timing Role: Supplies core voltage (1.8V–3.3V) and I/O voltage (3.3V) with enable control synchronized to cycle states. Use Value: 750µs soft-start prevents inrush-induced voltage droop on shared 12V bus, avoiding MCU brownout resets during spin cycles. | Use Scenario: Powering GPS receivers, CAN transceivers, and cellular modems in rail or fleet telematics units. IC Role / Device Role / Timing Role: Generates 3.3V from wide-input 9–16V vehicle battery, surviving load-dump and cold-crank transients. Use Value: 2.5V–16V input range and 173°C thermal shutdown ensure reliable operation in under-hood environments with minimal heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76933DBVT | Fixed 3.3V output; identical package, pinout, and thermal specs; same 100mA rating and 46dB PSRR at 1MHz. | No external resistor network needed; simplifies layout but lacks output flexibility. | Select when fixed 3.3V is sufficient and design reuse of existing TPS76933DBVT footprint is prioritized. |
| MCP1700T-3302E/TT | 250mA rated, 6V max input, ±2% accuracy, no enable pin, higher dropout (600mV @250mA), SOT-23-3 package. | Lacks EN and FB pins; unsuitable for programmable or sequenced power systems. | Choose only for cost-sensitive, low-current, fixed-voltage applications where enable control and tight accuracy are not required. |
Compared with TPS76933DBVT, the TPS76901DBVTG4 offers output adjustability at the cost of two external resistors; versus MCP1700T-3302E/TT, it provides superior accuracy, lower dropout, enable functionality, and wider input range-critical for industrial 12V rail regulation.
Availability
TPS76901DBVTG4 is available at Aetrix Electronics and suitable for industrial motor control, HVAC sensor interface, smart appliance MCU bias, and industrial transportation telematics requiring stable component supply and long-term manufacturability.
Supply support for TPS76901DBVTG4 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 is designed for industrial and automotive applications demanding wide-input LDOs with high PSRR, thermal resilience, and enable-controlled power sequencing in compact SOT-23 packages.
FAQ
What is the maximum input voltage rating for the TPS76901DBVTG4?
The TPS76901DBVTG4 has an absolute maximum input voltage of 18V, with recommended continuous operation up to 16V. Exceeding 18V risks permanent damage. This 16V operating limit enables direct regulation from standard 12V industrial rails and accommodates transient spikes common in automotive and motor-control environments. The TPS76901DBVTG4 incorporates UVLO to disable operation below 1.9V, ensuring safe startup behavior.
How does the TPS76901DBVTG4 achieve stable operation with ceramic capacitors?
The TPS76901DBVTG4 is internally compensated to remain stable with ceramic output capacitors ranging from 2.2µF to 200µF and ESR values between 0Ω and 3Ω. This eliminates the need for higher-ESR tantalum or aluminum electrolytic capacitors, reducing board area, cost, and failure risk. Stability is verified across temperature (–55°C to +125°C) and load (0–100mA), and the device includes ESR vs. output current stability charts in its datasheet to guide capacitor selection for specific application conditions.
What is the purpose of the FB pin on the TPS76901DBVTG4?
The FB pin on the TPS76901DBVTG4 is the feedback input for the adjustable-output configuration. It connects to a resistor divider between VOUT and GND to set the output voltage precisely within the 1.2V–5.5V range using the formula VOUT = 1.2V × (1 + R1/R2). The FB pin draws only ±0.1µA, minimizing divider current loss. For the TPS76901DBVTG4, this pin must never be left floating or shorted, as doing so will cause regulation failure or damage. Fixed-output variants replace FB with NC.
Does the TPS76901DBVTG4 include thermal protection?
Yes, the TPS76901DBVTG4 integrates thermal shutdown protection that activates at 173°C junction temperature and resets at 157°C. This hysteresis prevents oscillation during thermal stress. The device also includes overcurrent protection, limiting output current to 370–450mA depending on temperature. These protections operate independently of the enable pin and remain active even in shutdown mode, safeguarding both the regulator and downstream circuitry during sustained overload or poor heatsinking conditions.
Can the TPS76901DBVTG4 be used in battery-powered applications?
Yes, the TPS76901DBVTG4 is well-suited for battery-powered applications due to its ultra-low quiescent current (50–95µA at zero load), 2.5V minimum input voltage, and enable-controlled standby mode drawing ≤2.75µA. Its 215mV typical dropout at 100mA extends usable battery life by allowing operation down to ~2.7V for a 2.5V output. Combined with UVLO and soft-start, it ensures reliable startup from partially discharged Li-ion or alkaline cells while preventing brownout-induced MCU resets.
TPS76901DBVTG4 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 5.5V
- 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
TPS76901DBVTG4 FAQ
1.How can I place an order for TPS76901DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76901DBVTG4 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 TPS76901DBVTG4 reliable?
The price and inventory of TPS76901DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76901DBVTG4 is usually 5 days.
3.What payment methods are accepted for TPS76901DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76901DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76901DBVTG4?
TPS76901DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76901DBVTG4 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 TPS76901DBVTG4?
For technical support, including TPS76901DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76901DBVTG4 requirements.
6.How does Aetrix verify that TPS76901DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS76901DBVTG4 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 TPS76901DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS76901DBVTG4?
All TPS76901DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76901DBVTG4, 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 TPS76901DBVTG4 part is unused and in its original packaging.
Return procedure for TPS76901DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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