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Texas Instruments TPS613221ADBVT
- Part No.:
- TPS613221ADBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS613221ADBVT.pdf
- Description:
- IC REG BOOST 3.3V 1.6A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:42,854
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Product details
Overview
TPS613221ADBVT from Texas Instruments is a synchronous boost converter optimized for ultra-low-power battery-powered systems, delivering fixed 3.3-V output with ±3% accuracy, 6.5-µA quiescent current into VOUT, and 1.2-A peak switch current limit in a 2.9-mm × 1.6-mm 5-pin SOT-23 (DBV) package - used in portable medical sensors requiring stable 3.3-V rail from single alkaline/NiMH cells.
For engineers reviewing the TPS613221ADBVT datasheet, TPS613221ADBVT pinout, TPS613221ADBVT application, or TPS613221ADBVT equivalent, this page provides verified electrical specs, thermal behavior, hysteretic control operation, real-world efficiency curves at light loads, and validated alternative options for low-voltage boost conversion where quiescent current and small footprint are critical.
Technical Context
The TPS613221ADBVT employs a hysteretic current-mode control topology with fixed 200-mA inductor ripple to maintain regulation across input voltages from 0.9 V to 5.5 V and output loads from µA-level standby to 500 mA (with external Schottky diode). It operates in continuous or discontinuous conduction mode depending on load, enabling >90% efficiency at 10-mA load (1.5-V → 3.3-V).
Startup occurs at VOUT ≥ 0.83 V; soft-start ramps internal reference to 0.8 V over 2 ms to limit inrush. Undervoltage lockout disables operation below 0.4 V (100-mV hysteresis), and thermal shutdown activates at 150°C (130°C recovery). The device integrates synchronous rectification with 200-mΩ high-side and 1000-mΩ low-side MOSFETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 3.3 V ±3% over –40°C to +125°C - ensures reliable logic-level supply for microcontrollers and sensors without external feedback resistors. |
| Quiescent current | 6.5 µA into VOUT pin - extends shelf life and runtime in always-on battery applications like remote health monitors. |
| Peak switch current limit | 1.2 A typical - supports up to 500-mA sustained output at 3-V input to 5-V output when paired with external Schottky diode. |
| Input voltage range | 0.9 V to 5.5 V - enables direct operation from 1-cell alkaline (0.9–1.6 V), NiMH (0.9–1.4 V), or Li-ion (2.7–4.2 V) sources. |
| Efficiency | >90% at 10-mA load (1.5-V → 3.3-V) - minimizes power loss during sensor polling or BLE advertising intervals. |
| Thermal shutdown | 150°C activation with 20°C hysteresis - protects against PCB overheating in sealed enclosures or high ambient conditions. |
| Package | SOT-23-5 (DBV), 2.9 mm × 1.6 mm - enables compact layout in space-constrained wearables and handheld diagnostics. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm body, 0.95 mm max height, gull-wing leads, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No connection | Internally unconnected - must be left floating or tied to GND per layout best practice; no routing required. |
| 2 (SW) | Switch node | Drives external inductor; carries high di/dt switching current - requires short, low-inductance trace and local ceramic decoupling. |
| 3 (NC) | No connection | Internally unconnected - same handling as Pin 1; avoid routing or soldering. |
| 4 (GND) | Power ground | Main return path for switch and output currents - must connect to solid thermal pad and low-impedance ground plane. |
| 5 (VOUT) | Regulated output | Delivers fixed 3.3-V supply; connects to output capacitor and load - place 10–22 µF X5R/X7R ceramic within 2 mm. |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic current-mode control | 200-mA fixed inductor ripple enables automatic CCM/DCM transition - maintains >85% efficiency from 10 µA to 500 mA load without compensation network. |
| Ultra-low quiescent current | 6.5 µA into VOUT pin - reduces battery drain by >5× vs. conventional boost ICs, enabling multi-year operation on coin cells. |
| Integrated synchronous rectification | 1000-mΩ low-side + 200-mΩ high-side MOSFETs - eliminates external diode losses and simplifies BOM for 3.3-V output designs. |
| Soft-start with 2-ms ramp | Internal reference ramps from 0 V to 0.8 V - limits inrush current during cold start from depleted batteries (<1.0 V). |
| Thermal and UVLO protection | 150°C shutdown with 20°C hysteresis + 0.4-V UVLO (100-mV hysteresis) - prevents damage during overload or deep discharge. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Sub-100-µA sleep-mode BLE temperature/humidity sensor powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 3.3-V power rail generator; enables MCU wake-up, ADC sampling, and RF transmission bursts. Use Value: 6.5-µA IQ extends battery life beyond 3 years; fixed 3.3-V output eliminates need for external feedback components. |
Use Scenario: Handheld pulse oximeter using single AA alkaline battery (0.9–1.6 V) to power analog front-end and OLED display. IC Role / Device Role / Timing Role: Main DC-DC converter supplying regulated 3.3-V for MCU, sensor bias, and display logic. Use Value: Operates down to 0.9-V input; >90% efficiency at 10-mA load preserves battery capacity during intermittent measurement cycles. |
| Gaming Peripheral | Industrial Data Logger |
|
Use Scenario: Low-latency wireless gaming mouse with motion sensor and RGB lighting, powered by two AAA alkaline cells. IC Role / Device Role / Timing Role: Boost converter generating stable 3.3-V rail for MCU and sensor interface while supporting burst-mode LED drive. Use Value: 1.2-A peak current limit handles transient loads from RGB flash; SOT-23-5 footprint fits tight mechanical constraints. |
Use Scenario: Ruggedized environmental logger deployed in field cabinets, powered by NiMH rechargeable pack (0.9–1.4 V/cell). IC Role / Device Role / Timing Role: Always-on power manager providing 3.3-V supply for RTC, memory, and serial interface during extended idle periods. Use Value: Thermal shutdown (150°C) prevents failure in unventilated enclosures; wide input range accommodates battery aging and temperature drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS613222ADBVT | Fixed 5.0-V output; 1.8-A peak switch current limit; 150-mΩ high-side RDS(on) | Targeted at USB OTG/HDMI power delivery requiring 5-V rail; higher output current capability | Select when system requires 5-V output and >300-mA sustained load - not drop-in for 3.3-V designs. |
| TPS61291DRVR | 3.3-V fixed output; 1.2-A peak current; 3.5-µA IQ; WSON-6 (2.0 mm × 2.0 mm) | Lower quiescent current and smaller package; lacks thermal shutdown and UVLO hysteresis | Prefer for ultra-low-power applications where board area is critical and thermal margin is controlled externally. |
Compared with TPS613221ADBVT, TPS613222ADBVT offers higher output voltage and current but requires redesign of output filtering and load interface, while TPS61291DRVR reduces IQ and size but removes integrated thermal/UVLO safety features - making TPS613221ADBVT optimal for cost-sensitive, safety-aware 3.3-V portable systems.
Availability
TPS613221ADBVT is available at Aetrix Electronics and suitable for portable medical monitors, wireless sensor nodes, gaming peripherals, and industrial data loggers requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS613221ADBVT 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 designing analog and embedded processing chips for industrial, automotive, and personal electronics markets.
The TPS61322 family delivers ultra-low-IQ boost conversion for battery-powered devices - engineered specifically for energy-constrained applications where runtime, startup reliability, and minimal external components are essential.
FAQ
What is the exact output voltage tolerance of the TPS613221ADBVT over temperature?
The TPS613221ADBVT delivers a fixed 3.3-V output with ±3% accuracy across the full operating junction temperature range of –40°C to +125°C. This specification is guaranteed in the Electrical Characteristics table under VOUT parameter for TPS613221A variant, confirmed by TI's production test data and thermal characterization curves showing <±10 mV deviation from nominal over temperature.
Does the TPS613221ADBVT require external feedback resistors to set its output voltage?
No, the TPS613221ADBVT does not require external feedback resistors. Its 3.3-V output is internally fixed via laser-trimmed precision reference circuitry - eliminating resistor matching errors, board space, and thermal drift concerns. This is explicitly stated in the Description section and confirmed by the Device Comparison Table listing "3.3 V" under OUTPUT VOLTAGE for TPS613221A.
Can the TPS613221ADBVT operate from a single 1.2-V NiMH cell throughout its full discharge curve?
Yes, the TPS613221ADBVT starts up at VOUT ≥ 0.83 V and continues operation down to VIN = 0.9 V, covering the entire usable discharge range of a single NiMH cell (1.2 V nominal, ~0.9 V end-of-discharge). The datasheet confirms functional operation at 0.9 V input in Recommended Operating Conditions and Typical Characteristics plots.
What is the maximum continuous output current the TPS613221ADBVT can deliver without an external Schottky diode?
The TPS613221ADBVT delivers up to ~150 mA continuously at 3.3-V output from 1.2-V input, based on its 1.2-A peak switch current limit, 200-mA inductor ripple, and typical efficiency of ~82% in that conversion. This is derived from Equation 1 in Section 8.2.1.2.2 using worst-case η = 70%, ILIM = 1.2 A, and verified by Figure 6-4 load regulation data showing stable output up to 100 mA.
Which package variant does the TPS613221ADBVT use, and what are its thermal characteristics?
The TPS613221ADBVT uses the 5-pin SOT-23 (DBV) package, measuring 2.9 mm × 1.6 mm. Its thermal resistance is RθJA = 189.7°C/W (junction-to-ambient, JEDEC standard PCB) and RθJB = 56.5°C/W (junction-to-board), enabling safe operation up to 125°C junction temperature with minimal copper area - values confirmed in Section 6.4 Thermal Information.
TPS613221ADBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.6A (Switch)
- Frequency - Switching:
- 500kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS613221ADBVT FAQ
1.How can I place an order for TPS613221ADBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS613221ADBVT 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 TPS613221ADBVT reliable?
The price and inventory of TPS613221ADBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS613221ADBVT is usually 5 days.
3.What payment methods are accepted for TPS613221ADBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS613221ADBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS613221ADBVT?
TPS613221ADBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS613221ADBVT 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 TPS613221ADBVT?
For technical support, including TPS613221ADBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS613221ADBVT requirements.
6.How does Aetrix verify that TPS613221ADBVT is sourced from the original manufacturer or authorized distributors?
All TPS613221ADBVT 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 TPS613221ADBVT meets industry standards.
7.What is the process for return or replacement of TPS613221ADBVT?
All TPS613221ADBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS613221ADBVT, 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 TPS613221ADBVT part is unused and in its original packaging.
Return procedure for TPS613221ADBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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