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Texas Instruments TPS61200DRCT
- Part No.:
- TPS61200DRCT
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61200DRCT.pdf
- Description:
- IC REG BOOST ADJ 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,627
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Product details
Overview
TPS61200DRCT from Texas Instruments is a low-input-voltage synchronous boost converter IC with adjustable output (1.8 V to 5.5 V), 0.3 V startup capability, 1.3-A internal switches, and automatic transition between boost and down-conversion modes. It delivers up to 600 mA at 5 V from a single Li-ion cell and supports portable medical devices, fuel-cell-powered sensors, and white LED drivers.
For engineers reviewing the TPS61200DRCT datasheet, TPS61200DRCT pinout, TPS61200DRCT application, or TPS61200DRCT equivalent, key selection criteria include its 0.3 V minimum input voltage, 1.3-A switch current rating, Power Save mode control via PS pin, and 3 mm × 3 mm VSON-10 package with dual ground (GND/PGND) separation for noise-sensitive power management designs.
Technical Context
The TPS61200DRCT implements an average-current-mode PWM controller with input/output voltage feedforward for fast transient response. Its three-NMOS synchronous topology enables high efficiency across wide VIN–VOUT differentials and supports automatic down-conversion when VIN ≥ VOUT - a critical feature for battery-powered systems where input voltage decays toward or exceeds regulated output.
It integrates undervoltage lockout (UVLO) with programmable threshold (250 mV typical), thermal shutdown (140°C trip), short-circuit protection, and soft-start with prebias capability. The VAUX auxiliary supply powers internal control circuitry independently, enabling reliable startup into full load at 0.5 V input while maintaining load disconnect during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.3 V to 5.5 V - enables operation directly from depleted alkaline/NiMH or partially discharged Li-ion cells. |
| Output Voltage Range | 1.8 V to 5.5 V (adjustable via FB pin) - supports wide range of digital logic, analog rails, and LED biasing. |
| Switch Current Limit | 1200–1500 mA average - sets maximum deliverable power and defines safe inductor sizing for boost stage. |
| Startup Input Voltage | 0.5 V - allows cold-start from ultra-low-energy sources like energy-harvesting solar or fuel cells. |
| Quiescent Current | 50–70 μA (PS = Low) - minimizes battery drain in always-on portable applications. |
| Switching Frequency | 1.25–1.65 MHz - enables use of small external inductors (e.g., 2.2 μH) and ceramic capacitors. |
| Feedback Reference | 495–505 mV - precision reference for accurate output regulation using external resistor divider. |
| Thermal Shutdown | 140°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
The TPS61200DRCT is housed in a thermally enhanced 3 mm × 3 mm VSON-10 package with exposed thermal pad soldered to PGND for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VAUX (Pin 1) | Auxiliary supply I/O | Provides internal bias rail; must be decoupled externally; powers control circuitry independently of VOUT. |
| VOUT (Pin 2) | Regulated output | Main power rail output; capable of delivering up to 600 mA depending on VIN–VOUT ratio and thermal conditions. |
| L (Pin 3) | Inductor connection | Connects to boost inductor; carries high-frequency switching current; requires low-inductance layout to PGND. |
| PGND (Pin 4) | Power ground | Return path for high-current switches; must be isolated from signal GND except at single-point star connection near GND pin. |
| VIN (Pin 5) | Main input supply | Accepts 0.3–5.5 V source; feeds both power stage and VAUX via internal LDO-like path. |
| EN (Pin 6) | Enable input | Active-high logic control; disables entire device and disconnects load from input during shutdown. |
| UVLO (Pin 7) | Undervoltage monitor input | Programmable UVLO threshold via external resistor divider; defaults to ~250 mV if tied to VAUX. |
| PS (Pin 8) | Power Save mode control | Low = enable variable-frequency Power Save mode; High = force fixed-frequency operation. |
| GND (Pin 9) | Control ground | Reference for all logic, feedback, and sensing circuits; separate from PGND to avoid noise coupling. |
| FB (Pin 10) | Feedback input | Connects to resistor divider for adjustable output; internally tied to VOUT for fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic boost/down-conversion mode transition | Enables stable regulation even when VIN rises above VOUT (e.g., Li-ion charging or alkaline cell recovery), eliminating need for external buck-boost controllers. |
| Load disconnect during shutdown | Prevents reverse current flow and battery drain when disabled - critical for long-term storage in medical or IoT edge devices. |
| Synchronous 3-switch architecture | Uses three integrated N-channel MOSFETs to eliminate external diode losses and maintain >90% efficiency at 300 mA/3.3 V (VIN ≥2.4 V). |
| Programmable UVLO with external resistor divider | Allows system-level brown-out protection tuned to battery chemistry (e.g., cut-off at 0.9 V/cell for NiMH or 2.8 V for Li-ion). |
| Soft-start with prebias support | Prevents output overshoot and inrush current during cold start or hot-plug scenarios, even with large output capacitance. |
| Integrated thermal shutdown with hysteresis | Protects against PCB layout-induced thermal runaway without requiring external thermal sensors or firmware intervention. |
Applications
| Portable Medical Sensors | Fuel Cell Energy Harvesting |
|---|---|
Use Scenario: Wearable glucose monitors powered by coin-cell batteries requiring stable 3.3 V rail over full discharge curve. IC Role / Device Role / Timing Role: Primary DC-DC regulator converting 0.7–3.0 V battery output to regulated 3.3 V for MCU, sensor, and BLE radio. Use Value: 0.5 V startup and 50 μA quiescent current extend usable battery life by >30% versus legacy boost converters. | Use Scenario: Indoor air quality sensor node powered by miniature methanol fuel cell (0.3–1.2 V output). IC Role / Device Role / Timing Role: Input voltage booster enabling microcontroller operation from ultra-low-voltage energy harvester. Use Value: 0.3 V minimum input ensures continuous operation even under dim lighting or low fuel flow conditions. |
| White LED Backlighting | Single-Cell Li-ion Portable Audio |
Use Scenario: Compact LCD display backlight requiring constant-current drive from 3.6 V nominal Li-ion cell. IC Role / Device Role / Timing Role: Adjustable-output boost converter supplying 5.0 V to LED driver IC, dynamically adapting as battery discharges. Use Value: Automatic down-conversion mode maintains regulation as cell voltage drops from 4.2 V to 3.0 V - no external buck stage needed. | Use Scenario: Bluetooth headset with integrated DAC and Class-D amplifier running from one 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: Dual-rail power manager generating 1.8 V for digital core and 3.3 V for analog/audio sections. Use Value: Independent VAUX rail ensures clean control voltage during high-current audio transients, reducing audible noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61201DRCT | Fixed 3.3 V output; identical package, pinout, and electrical specs except FB pin internally connected to VOUT. | Eliminates external resistor divider but lacks output flexibility; suited for systems with fixed 3.3 V requirement. | Select TPS61201DRCT only when output voltage is fixed and board space for feedback resistors must be minimized. |
| MAX17062ETA+ | Higher 2-MHz switching frequency; lower 25 μA quiescent current; but narrower 0.5–5.5 V input range and no down-conversion mode. | Better suited for space-constrained, ultra-low-power applications where VIN never exceeds VOUT. | Choose MAX17062ETA+ for sub-10 μA system sleep current targets, but verify thermal performance without down-conversion capability. |
Compared with TPS61200DRCT, TPS61201DRCT removes design flexibility for output adjustment but simplifies BOM, while MAX17062ETA+ trades down-conversion and ultra-low-VIN capability for lower IQ and higher frequency - making TPS61200DRCT uniquely balanced for multi-chemistry battery systems with dynamic VIN–VOUT relationships.
Availability
TPS61200DRCT is available at Aetrix Electronics and suitable for portable medical sensors, fuel-cell-powered IoT nodes, and single-cell Li-ion audio devices requiring stable component supply across extended production lifecycles.
Supply support for TPS61200DRCT 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 expertise in battery-powered system solutions.
The TPS6120x product line was designed specifically for ultra-low-input-voltage power conversion in energy-constrained portable and energy-harvesting applications - emphasizing startup reliability, efficiency across wide load ranges, and seamless mode transitions.
FAQ
What is the minimum input voltage required for TPS61200DRCT to start regulating?
The TPS61200DRCT can start up and regulate into full load with as little as 0.5 V applied to the VIN pin. This capability is enabled by its dedicated VAUX supply path and optimized control loop, allowing it to operate from nearly-dead alkaline cells or low-output energy harvesters - a key differentiator versus most boost converters requiring ≥0.9 V minimum startup.
How does the TPS61200DRCT handle situations where input voltage exceeds output voltage?
The TPS61200DRCT automatically transitions into Down Conversion mode when VIN reaches or exceeds the programmed VOUT. In this mode, it regulates by adjusting the voltage drop across internal synchronous rectifiers rather than boosting - maintaining output stability without external components, though with reduced efficiency and increased thermal load compared to pure boost operation.
Can the TPS61200DRCT be used with a fixed output voltage without external resistors?
No - the TPS61200DRCT is the adjustable-output variant in the TPS6120x family and requires an external resistor divider connected to the FB pin to set VOUT. For fixed-output versions, TI offers the pin-compatible TPS61201DRCT (3.3 V) and TPS61202DRCT (5.0 V), which have internal feedback dividers and tie FB directly to VOUT internally.
What is the purpose of the separate GND and PGND pins on the TPS61200DRCT?
The TPS61200DRCT uses separate GND (control ground) and PGND (power ground) pins to isolate high-current switching noise from sensitive analog and logic circuitry. GND serves as the reference for FB, EN, PS, and UVLO signals, while PGND carries peak inductor and switch currents. They must connect at a single point on the PCB - typically near the GND pin - to prevent ground bounce and ensure stable regulation.
Does the TPS61200DRCT provide protection against output short circuits?
Yes - the TPS61200DRCT includes robust output short-circuit protection active under all operating conditions. During a short, it reduces the average inductor current limit to prevent thermal damage and limits duty cycle to avoid excessive power dissipation. Protection remains active during startup, normal operation, and Power Save mode, ensuring reliability in unattended portable equipment.
TPS61200DRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.2A (Switch)
- Frequency - Switching:
- 1.25MHz ~ 1.65MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61200DRCT FAQ
1.How can I place an order for TPS61200DRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61200DRCT 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 TPS61200DRCT reliable?
The price and inventory of TPS61200DRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61200DRCT is usually 5 days.
3.What payment methods are accepted for TPS61200DRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61200DRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61200DRCT?
TPS61200DRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61200DRCT 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 TPS61200DRCT?
For technical support, including TPS61200DRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61200DRCT requirements.
6.How does Aetrix verify that TPS61200DRCT is sourced from the original manufacturer or authorized distributors?
All TPS61200DRCT 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 TPS61200DRCT meets industry standards.
7.What is the process for return or replacement of TPS61200DRCT?
All TPS61200DRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61200DRCT, 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 TPS61200DRCT part is unused and in its original packaging.
Return procedure for TPS61200DRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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