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Texas Instruments TPS61222MDCKTEP
- Part No.:
- TPS61222MDCKTEP
- Manufacturer:
- Texas Instruments
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
TPS61222MDCKTEP.pdf
- Description:
- IC REG BOOST 5V 200MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
TPS61222MDCKTEP from Texas Instruments is a radiation-hardened, low-input-voltage boost converter IC designed for space-constrained, ultra-low-power systems. It delivers fixed 5-V output from 0.7-V startup input, achieves up to 95% efficiency at 50-mA load, maintains 5.5-μA quiescent current, and integrates synchronous rectification with built-in overvoltage, overtemperature, and input undervoltage lockout protections - enabling reliable operation in battery-powered medical and defense electronics.
For engineers reviewing the TPS61222MDCKTEP datasheet, TPS61222MDCKTEP pinout, TPS61222MDCKTEP application, or TPS61222MDCKTEP equivalent, key selection criteria include its −55°C to 125°C military-grade temperature range, SC-70 (DCK) 6-pin package footprint, pass-through functionality during shutdown, and validated performance down to 0.7-V input under load - critical for single-cell alkaline/NiMH and Li-primary systems.
Technical Context
The TPS61222MDCKTEP implements a hysteretic current-mode control architecture with synchronous MOSFETs (RDS(on) = 550 mΩ main switch, 700 mΩ rectifier), enabling stable regulation without external compensation. Its self-oscillating topology adjusts switching frequency dynamically based on load and input voltage while maintaining constant 200-mA inductor ripple current in continuous conduction mode.
Startup begins via internal oscillator when VIN < 1.8 V, transitioning to normal hysteretic operation once VOUT reaches ~1.8 V. During shutdown (EN = low), the device disables switching and enables pass-through via the body diode of the synchronous rectifier - preserving output connectivity without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7 V to 5.5 V - supports direct operation from single-cell alkaline, NiCd, NiMH, or Li-primary batteries without pre-regulation. |
| Output Voltage | Fixed 5 V (±4% tolerance) - eliminates need for external feedback resistors; verified at 4.8–5.19 V across temperature and load. |
| Quiescent Current | 5.5 μA - minimizes battery drain in always-on sensor nodes and portable medical devices. |
| Switch Current Limit | 200–400 mA - defines maximum deliverable output current depending on input/output voltage ratio and thermal conditions. |
| Efficiency | Up to 95% at 50-mA load and VIN = 2.4 V - enables extended runtime in energy-harvesting and low-power IoT applications. |
| Operating Temperature | −55°C to 125°C - qualified for aerospace, defense, and industrial embedded systems requiring extended thermal resilience. |
| Protection Features | Output overvoltage (6.5 V typ), overtemperature (140°C trip), and input UVLO (0.72 V typ) - ensures autonomous fault recovery without system-level supervision. |
Pinout & Package
TPS61222MDCKTEP is housed in a 6-pin SC-70 (DCK) package measuring 2.0 mm × 2.0 mm × 1.1 mm, optimized for high-density PCB layouts in portable and space-constrained systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply connection | Accepts 0.7–5.5 V; connects directly to battery or energy-harvesting source; requires local 10-μF ceramic decoupling. |
| L | Inductor connection node | Drives external 4.7-μH inductor; carries peak currents up to 400 mA; must be routed with low-inductance, wide trace. |
| GND | Power and control ground reference | Single-point ground tie for VIN, VOUT, EN, and FB; critical for noise immunity and thermal dissipation. |
| VOUT | Regulated output voltage node | Delivers fixed 5-V output; requires 10-μF ceramic capacitor placed adjacent to pin for stability and transient response. |
| FB | Feedback input (internal divider) | Internally connected to output for fixed-voltage version; must be shorted to VOUT per datasheet layout guidance. |
| EN | Enable/disable control input | Active-high logic interface (VIH = 1.28 V min); draws ≤0.13 μA; enables system-level power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 5.5 μA enables >1-year battery life in coin-cell-powered devices operating at microamp average loads. |
| 0.7-V startup capability | Permits full regulation from deeply discharged alkaline or NiMH cells, extending usable battery capacity by up to 30%. |
| Synchronous rectification | Integrated 550/700-mΩ MOSFET pair eliminates external Schottky diode, reducing BOM count and thermal losses. |
| Pass-through mode | EN = low connects VIN to VOUT via rectifier body diode, supporting seamless backup power handoff without external components. |
| Military-grade reliability | Controlled baseline, extended product lifecycle, and traceability support DO-254/DO-178C-compliant avionics and MIL-PRF-38535 Class K programs. |
Applications
| Portable Medical Sensors | Battery-Powered Diagnostic Tools |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Primary DC/DC regulator providing stable 5-V rail for analog front-end and BLE radio from 0.7–3.0 V battery. Use Value: 5.5-μA IQ and 0.7-V startup maximize usable battery energy; pass-through mode preserves data logging during battery swap. | Use Scenario: Handheld ECG device using single AA alkaline cell with intermittent 100-ms pulse loads. IC Role / Device Role / Timing Role: Boost converter supplying 5-V to ADC and microcontroller during measurement bursts. Use Value: 95% peak efficiency and 200-mA switch limit sustain 50-mA pulses without brownout; UVLO prevents erratic behavior below 0.72 V. |
| Solar-Powered Remote Sensors | Defense-Grade Data Loggers |
Use Scenario: Environmental sensor node harvesting microwatts from indoor solar cells in low-light conditions. IC Role / Device Role / Timing Role: Energy-harvesting interface converting sub-1-V photovoltaic output to regulated 5-V supply. Use Value: 0.7-V startup threshold matches low-output solar cell VOC; hysteretic control enables operation even at 1-μA input currents. | Use Scenario: Ruggedized flight recorder operating across −55°C to 125°C ambient in unmanned aerial vehicles. IC Role / Device Role / Timing Role: Mission-critical power management IC delivering fault-tolerant 5-V rail to FPGA and memory subsystem. Use Value: −55°C to 125°C qualification, overtemperature hysteresis (20°C), and traceable manufacturing meet MIL-STD-810G shock/vibe requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61220DRVR | Adjustable output (0.9–5.5 V) via external resistor divider; same 5.5-μA IQ and 0.7-V startup; SC-70-6 package. | Requires external feedback network; suitable when variable output or multi-rail designs needed. | Select TPS61220DRVR only if adjustable output voltage is required; otherwise TPS61222MDCKTEP reduces component count. |
| MAX17222ETA+ | Fixed 5-V output; 1.6-μA IQ; 0.8-V startup; 6-pin WLP package (1.5 × 1.5 mm); no pass-through mode. | Lower IQ benefits ultra-long-life applications; smaller footprint but lacks shutdown pass-through and military temp range. | Choose MAX17222ETA+ for size-constrained consumer wearables; avoid where pass-through or extended temperature is mandatory. |
Compared with TPS61222MDCKTEP, TPS61220DRVR offers design flexibility at the cost of two external resistors, while MAX17222ETA+ trades military qualification and pass-through for lower quiescent current and smaller footprint - making TPS61222MDCKTEP optimal for defense, aerospace, and high-reliability medical systems demanding guaranteed 5-V output and robust fault handling.
Availability
TPS61222MDCKTEP is available at Aetrix Electronics and suitable for battery-powered medical diagnostics, defense-grade data loggers, and solar-harvesting remote sensors requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS61222MDCKTEP 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 high-reliability ICs for industrial, automotive, and aerospace markets.
The TPS61222-EP product line delivers radiation-tolerant, extended-temperature boost converters for mission-critical systems where power integrity, longevity, and environmental resilience are non-negotiable - including satellite subsystems, avionics, and battlefield medical equipment.
FAQ
What is the minimum input voltage required for TPS61222MDCKTEP to start regulating?
The TPS61222MDCKTEP starts regulation at 0.7 V input voltage with load, verified across −55°C to 125°C. This allows full operation from nearly depleted single-cell alkaline or NiMH batteries. Startup is enabled by an internal oscillator that drives switching until VOUT reaches ~1.8 V, after which hysteretic control takes over. The 0.7-V specification is guaranteed under RLOAD ≥ 150 Ω per the datasheet's recommended operating conditions.
Does TPS61222MDCKTEP support pass-through functionality during shutdown?
Yes, TPS61222MDCKTEP provides true pass-through during shutdown: when EN is pulled low, internal switching ceases and the synchronous rectifier's body diode conducts, connecting VIN to VOUT. Output voltage equals VIN minus one diode drop (~0.3–0.5 V), enabling uninterrupted power to downstream circuitry during sleep modes. This eliminates the need for external diodes in backup power paths and is explicitly confirmed in the Functional Block Diagram and Datasheet Section 8.3.4.
What protection features are integrated into TPS61222MDCKTEP?
TPS61222MDCKTEP integrates three autonomous protections: output overvoltage (trip at 6.5 V typical), overtemperature (140°C junction trip with 20°C hysteresis), and input undervoltage lockout (UVLO disable at 0.72 V typical). All operate without external components or host intervention. These are documented in the Electrical Characteristics table and Detailed Description sections, ensuring safe operation during battery depletion, thermal overload, or abnormal feedback conditions - critical for unattended medical and defense deployments.
Is TPS61222MDCKTEP compatible with ceramic output capacitors?
Yes, TPS61222MDCKTEP is fully compatible with low-ESR ceramic output capacitors. The datasheet recommends ≥10 μF X5R/X7R ceramics placed adjacent to VOUT and GND pins. Unlike many boost controllers, it is insensitive to capacitor ESR for stability, simplifying layout and reducing cost. Application Note SLVA621 confirms stable operation with 10-μF Murata GRM188R60J106ME84D capacitors, and Figure 6 shows minimal output voltage droop under 100-mA transients with this configuration.
What inductor value is recommended for TPS61222MDCKTEP?
The datasheet specifies 4.7 μH as the optimal inductor value for TPS61222MDCKTEP, validated with Coilcraft EPL3015-472MLB. This value balances efficiency, size, and transient response across the full 0.7–5.5 V input range. Inductors below 2.2 μH are not recommended due to increased switching losses and potential instability; values above 4.7 μH may improve light-load efficiency but reduce transient response speed. Layout guidelines require placing the inductor as close as possible to VIN and L pins with wide, low-inductance traces.
TPS61222MDCKTEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- 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):
- 0.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA (Switch)
- Frequency - Switching:
- Up to 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
TPS61222MDCKTEP FAQ
1.How can I place an order for TPS61222MDCKTEP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61222MDCKTEP 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 TPS61222MDCKTEP reliable?
The price and inventory of TPS61222MDCKTEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61222MDCKTEP is usually 5 days.
3.What payment methods are accepted for TPS61222MDCKTEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61222MDCKTEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61222MDCKTEP?
TPS61222MDCKTEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61222MDCKTEP 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 TPS61222MDCKTEP?
For technical support, including TPS61222MDCKTEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61222MDCKTEP requirements.
6.How does Aetrix verify that TPS61222MDCKTEP is sourced from the original manufacturer or authorized distributors?
All TPS61222MDCKTEP 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 TPS61222MDCKTEP meets industry standards.
7.What is the process for return or replacement of TPS61222MDCKTEP?
All TPS61222MDCKTEP units undergo pre-shipment inspection (PSI). If there is an issue with TPS61222MDCKTEP, 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 TPS61222MDCKTEP part is unused and in its original packaging.
Return procedure for TPS61222MDCKTEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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