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Texas Instruments TPS70912DBVT
- Part No.:
- TPS70912DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS70912DBVT.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:478
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Product details
Overview
TPS70912DBVT from Texas Instruments is a 1.2-V fixed-output, ultra-low-quiescent-current (1 µA) LDO linear regulator in SOT-23-5 package, designed for always-on battery-powered systems requiring minimal idle power dissipation. It delivers up to 150 mA output current, features reverse-current protection, thermal shutdown, and ±2% output accuracy over –40°C to +125°C.
For engineers reviewing the TPS70912DBVT datasheet, TPS70912DBVT pinout, TPS70912DBVT application, or TPS70912DBVT equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-ready procurement details - all grounded in TI's SBVS186H production datasheet (Rev H, July 2021).
Technical Context
The TPS70912DBVT uses a PMOS pass transistor architecture enabling low dropout voltage (e.g., 180 mV typical at 50 mA) while maintaining ultra-low ground current across input voltage (2.7 V–30 V) and load (0–150 mA) ranges. Its internal band-gap reference and error amplifier ensure 2% DC output accuracy over temperature.
Functional modes are controlled via the EN pin: high (>0.9 V) enables regulation with 1 µA quiescent current; low (<0.4 V) disables output and reduces IN current to 150 nA. Reverse-current protection blocks >10 nA backflow from OUT to IN regardless of EN state, critical for multi-rail or backup-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% over –40°C to +125°C - supports precision low-voltage logic and sensor biasing without external feedback. |
| Quiescent Current | 1 µA typical at no load - enables >10-year battery life in smoke detectors or thermostats operating on coin cells. |
| Input Voltage Range | 2.7 V to 30 V - accommodates wide-source inputs including 9-V batteries, 12-V rails, and industrial 24-V supplies. |
| Dropout Voltage | 180 mV (typ) at 50 mA; 460 mV (max) at 150 mA - sustains regulation even under high-load, low-headroom conditions. |
| Shutdown Current | 150 nA typical when EN ≤ 0.4 V - reduces system standby leakage to negligible levels in motion-sensing sleep cycles. |
| PSRR | 80 dB at 10 Hz, 62 dB at 100 Hz - suppresses low-frequency ripple from noisy DC-DC converters feeding sensitive analog circuitry. |
| Output Noise | 190 µVRMS (10 Hz–100 kHz) - suitable for low-noise ADC references and RF front-end biasing without added filtering. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), thermally enhanced with exposed pad electrically tied to GND - requires PCB copper pour for optimal thermal performance (RθJB = 39.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Unregulated input | Accepts 2.7–30 V; must be decoupled with ≥0.1-µF ceramic capacitor to suppress transients and improve PSRR. |
| GND | Ground reference | Common return path for IN, OUT, and EN; thermal pad must be soldered to GND plane for thermal reliability. |
| OUT | Regulated output | Delivers stable 1.2 V; requires ≥2.2-µF ceramic capacitor (X5R/X7R) for stability and transient response. |
| EN | Enable control | Pulled internally to enable; drive <0.4 V to disable (150-nA shutdown); max 6.5 V absolute rating. |
| NC | No internal connection | Pin 2 in DBV package - must remain unconnected; not usable as thermal pad or auxiliary terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-current protection | Blocks >10 nA backflow from OUT to IN at all times - eliminates battery drain when multiple regulators share output rails. |
| Thermal shutdown & current limit | Triggers at 158°C junction temp; limits output to ≥200 mA - prevents damage during short-circuit or overload events. |
| Ultra-low IQ in dropout | Maintains ~1 µA ground current even when (VIN – VOUT) < VDO - maximizes battery runtime in brownout conditions. |
| Undervoltage lockout (UVLO) | Prevents erratic startup by holding output disabled until internal circuitry reaches valid operating voltage. |
| Stable with low-ESR ceramics | Works with 0–0.2 Ω ESR output capacitors (≥2.2 µF for 1.2 V) - avoids need for costly tantalum or polymer caps. |
Applications
| Smoke and Heat Detectors | Thermostats |
|---|---|
Use Scenario: Battery-powered standalone unit monitoring ambient temperature and particulate density with periodic wake-up and wireless transmission. IC Role / Device Role / Timing Role: Primary 1.2-V supply for MCU, analog front-end, and RF transceiver during active sensing and BLE broadcast phases. Use Value: 1 µA quiescent current extends CR2032 battery life beyond 5 years; reverse-current protection prevents discharge when backup supercapacitor engages. |
Use Scenario: Wireless HVAC controller using ambient sensors and Zigbee/Thread radio, operating intermittently on AA alkaline cells. IC Role / Device Role / Timing Role: Always-on 1.2-V rail powering real-time clock, wake-up comparator, and sensor interface during deep-sleep mode. Use Value: 150-nA shutdown current ensures <1 µA system standby draw; wide 2.7–30 V input accommodates both fresh and depleted battery stacks. |
| Motion Detectors (PIR) | Electricity Meters |
Use Scenario: Passive infrared (PIR) security sensor with micro-power amplifier, window comparator, and low-power MCU detecting occupancy bursts. IC Role / Device Role / Timing Role: Low-noise 1.2-V supply for PIR signal conditioning and digital wake-up logic - critical for false-trigger immunity. Use Value: 190 µVRMS output noise avoids amplifying thermal drift; 80 dB PSRR rejects switching noise from nearby SMPS. |
Use Scenario: Solid-state electricity meter with metrology IC, RTC, tamper detection, and PLC/GPRS communication module. IC Role / Device Role / Timing Role: Isolated 1.2-V auxiliary rail for real-time clock and secure crypto engine - powered continuously from main supply or backup capacitor. Use Value: ±2% output accuracy ensures RTC timing stability over temperature; thermal shutdown protects against sustained overloads in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70912DBVR | Same electrical specs and pinout; tape-and-reel packaging (3,000 pcs/reel vs. 250 pcs for DBVT) - identical die, different packaging format. | No functional difference; selected for high-volume automated assembly where reel feed is required. | Choose DBVR for SMT production lines; DBVT is preferred for prototyping, evaluation, or low-MOQ orders. |
| MCP1700T-1202E/TT | 1.2 V fixed, 1.6 µA IQ, SOT-23-3 package (no EN pin); 2% accuracy, 6 V max input - lacks enable control and reverse-current protection. | Suitable only for simple always-on rails without shutdown sequencing or multi-supply isolation requirements. | Use only if EN functionality and reverse-current blocking are unnecessary; verify thermal derating at >100 mA due to 3-pin thermal limitation. |
Compared with TPS70912DBVT, TPS70912DBVR offers identical performance in volume-friendly packaging, while MCP1700T-1202E/TT trades enable control and reverse-current protection for lower cost and smaller footprint - making it viable only in non-critical, always-enabled applications.
Availability
TPS70912DBVT is available at Aetrix Electronics and suitable for smoke detectors, thermostats, PIR motion sensors, and electricity meters requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for TPS70912DBVT 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, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
The TPS709 series is part of TI's ultra-low-IQ LDO portfolio, engineered specifically for battery-constrained, always-on IoT endpoints where micropower operation and robust fault protection are mandatory.
FAQ
What is the maximum input voltage rating for the TPS70912DBVT?
The TPS70912DBVT has an absolute maximum input voltage of 32 V, but its recommended operating range is 2.7 V to 30 V. Operation above 30 V risks exceeding safe power dissipation limits and may trigger thermal shutdown, especially at high ambient temperatures or without adequate PCB copper area.
Does the TPS70912DBVT require an external pull-up resistor on the EN pin?
No - the TPS70912DBVT integrates a 300-nA internal current source that pulls EN high, allowing the pin to be left floating for default-enable operation. Adding an external pull-up is unnecessary and may increase leakage; however, a direct connection to VIN is prohibited due to the 6.5-V EN clamp limit.
Can the TPS70912DBVT be used with a 1-µF output capacitor?
No - the TPS70912DBVT requires a minimum output capacitance of 2.2 µF (ceramic, X5R/X7R) for stability at 1.2 V. Using 1 µF violates the datasheet's 2.0-µF minimum for outputs below 1.5 V and risks oscillation, poor transient response, and potential output overshoot during load steps.
How does reverse-current protection function in the TPS70912DBVT?
The TPS70912DBVT actively blocks current flow from OUT to IN at all times, limiting reverse leakage to ≤10 nA typical - independent of EN state or output voltage level. This prevents battery discharge when multiple regulators share a common output bus or when backup sources exceed the main supply.
What is the thermal performance of the TPS70912DBVT in SOT-23-5 package?
In the DBV (SOT-23-5) package, the TPS70912DBVT has RθJA = 212.1°C/W (JEDEC low-K board) and RθJB = 39.5°C/W. For reliable 150-mA operation at +85°C ambient, the PCB must include a minimum 100-mm² GND copper pour connected to the thermal pad - otherwise, junction temperature may exceed 125°C.
TPS70912DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 2.05 µA
- Current - Supply (Max):
- 350 µA
- PSRR:
- 80dB ~ 52dB (10Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Current, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS70912DBVT FAQ
1.How can I place an order for TPS70912DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS70912DBVT 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 TPS70912DBVT reliable?
The price and inventory of TPS70912DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS70912DBVT is usually 5 days.
3.What payment methods are accepted for TPS70912DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS70912DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS70912DBVT?
TPS70912DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS70912DBVT 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 TPS70912DBVT?
For technical support, including TPS70912DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS70912DBVT requirements.
6.How does Aetrix verify that TPS70912DBVT is sourced from the original manufacturer or authorized distributors?
All TPS70912DBVT 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 TPS70912DBVT meets industry standards.
7.What is the process for return or replacement of TPS70912DBVT?
All TPS70912DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS70912DBVT, 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 TPS70912DBVT part is unused and in its original packaging.
Return procedure for TPS70912DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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