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Texas Instruments TPS61202DRCT
- Part No.:
- TPS61202DRCT
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61202DRCT.pdf
- Description:
- IC REG BOOST 5V 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,411
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Product details
Overview
TPS61202DRCT from Texas Instruments is a fixed-output 5-V synchronous boost converter IC designed for single-cell Li-ion, alkaline, NiMH, or fuel/solar-powered systems. It operates from 0.3 V to 5.5 V input, delivers up to 600 mA at 5 V (VIN ≥ 3 V), features automatic boost/down-conversion mode transition, and integrates 1.3-A internal switches in a 3 mm × 3 mm VSON-10 package for portable medical devices and cellular handsets.
For engineers reviewing the TPS61202DRCT datasheet, TPS61202DRCT pinout, TPS61202DRCT application, or TPS61202DRCT equivalent, key selection considerations include its 5-V fixed output, 1250–1650 kHz switching frequency, 55 μA quiescent current, undervoltage lockout programmability via UVLO pin, and thermal shutdown with 140°C trip point - all critical for low-voltage battery-powered designs requiring high efficiency across wide load ranges.
Technical Context
The TPS61202DRCT implements an average-current-mode PWM controller with input/output voltage feedforward for fast transient response. Its three-NMOS synchronous topology enables both boost operation (VIN < VOUT) and automatic down-conversion (VIN ≥ VOUT), where rectifier switch conduction is modulated to regulate output - increasing power loss but maintaining regulation without external components.
It integrates soft-start with VAUX precharge, short-circuit protection that limits average inductor current to ~400 mA during fault, and dual ground separation (GND for control logic, PGND for power switches) to prevent ground shift. The PS pin disables Power Save mode to enforce fixed-frequency operation, while EN enables/disables full device functionality including load disconnect.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.95–5.05 V - tightly regulated for USB-peripheral or 5-V MCU rail without external feedback resistors. |
| Input Voltage Range | 0.3 V to 5.5 V - supports startup from depleted single-cell batteries (e.g., 0.5 V) and operation through full Li-ion discharge (2.6 V). |
| Switching Frequency | 1250–1650 kHz - enables use of small external inductors (e.g., 2.2 μH) and reduces output ripple without compromising light-load efficiency. |
| Average Current Limit | 1200–1500 mA - sets maximum sustainable input current, limiting power delivery during overload or low VIN conditions. |
| Quiescent Current | 50–70 μA (PS = Low) - ensures minimal battery drain in always-on portable applications like medical sensors. |
| UVLO Threshold | Falling: 235–265 mV; Rising: 330–370 mV - allows precise system-level brownout detection using external resistor divider on UVLO pin. |
| Thermal Shutdown | 140°C trip with 20°C hysteresis - protects against sustained overloads or poor PCB thermal design without requiring external thermal monitoring. |
Pinout & Package
The TPS61202DRCT is housed in a thermally enhanced 3 mm × 3 mm VSON-10 package with exposed thermal pad (soldered to PGND) for efficient heat dissipation in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VAUX | Auxiliary supply output | Provides internal bias voltage (~2.4–5.5 V); must be decoupled externally; used for soft-start precharge before VOUT activation. |
| VIN | Main input supply | Accepts 0.3–5.5 V source; powers main switch and rectifiers; connects to battery or energy harvester. |
| EN | Enable control input | High = active operation; low = full shutdown with load disconnect and sub-2 μA IQ; must not float. |
| UVLO | Undervoltage monitor input | Monitors system voltage via external divider; triggers disable if voltage drops below programmed threshold (e.g., 2.4 V battery cutoff). |
| PS | Power Save mode control | Low = enable variable-frequency light-load mode; High = force fixed-frequency operation; logic thresholds defined per VIN range. |
| GND | Control ground reference | Reference for EN, PS, UVLO, FB; must connect to PGND at single point near GND pin to avoid noise coupling. |
| PGND | Power ground return | Return path for inductor current and switch conduction; separate from GND to minimize switching noise in control circuitry. |
| FB | Feedback input | Internally tied to VOUT for fixed-output TPS61202; no external divider required - simplifies layout and improves stability. |
| L | Inductor connection | Connects to external boost inductor (typically 2.2 μH); carries high di/dt switching current - requires short, wide trace. |
| VOUT | Regulated output | Delivers stable 5 V to load; includes overvoltage protection (5.5–7 V trip) and automatic load disconnect during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic boost/down-conversion mode | Enables seamless regulation from 0.3 V input up to 5.5 V input - eliminates need for separate buck/boost ICs in multi-battery or hybrid-energy systems. |
| Synchronous 3-switch architecture | Uses three integrated N-channel MOSFETs (main switch + two rectifiers) to achieve >90% efficiency at 300 mA/3.3 V and reduce external component count. |
| Load disconnect during shutdown | Physically isolates VOUT from VIN when EN = low - prevents backfeed, preserves battery charge, and meets safety requirements for medical or wearable devices. |
| Startup into full load at 0.5 V input | Guarantees reliable turn-on even with deeply discharged cells (e.g., 0.5 V alkaline), enabling extended runtime in energy-constrained IoT endpoints. |
| Short-circuit protection under all conditions | Actively limits average inductor current during output faults - protects IC and external components without latch-off, supporting auto-recovery in intermittent fault scenarios. |
Applications
| Portable Audio Players | Cellular Phones |
|---|---|
Use Scenario: Powering DACs, amplifiers, and display drivers from a single Li-ion cell with voltage sagging from 4.2 V to 2.6 V. IC Role / Device Role / Timing Role: Primary 5-V rail generator with automatic down-conversion to maintain regulation as battery discharges. Use Value: Eliminates need for discrete LDO post-regulation, reducing BOM cost and board area while sustaining audio fidelity across full battery cycle. | Use Scenario: Supplying 5-V USB charging circuitry and baseband processor peripherals in compact smartphone designs. IC Role / Device Role / Timing Role: Synchronous boost converter delivering up to 600 mA at 5 V with thermal shutdown and short-circuit protection. Use Value: Enables direct 5-V generation from 3.7-V Li-ion without efficiency penalty of linear regulators - critical for thermal budget in sealed enclosures. |
| Personal Medical Products | White LED Driver |
Use Scenario: Providing stable 5-V power to glucose meters, pulse oximeters, or insulin pumps operating from coin-cell or AAA batteries. IC Role / Device Role / Timing Role: Ultra-low-IQ (50–70 μA) boost regulator with shutdown current <2 μA and load disconnect for long shelf life. Use Value: Extends battery life beyond 1 year in always-ready medical devices while ensuring safe, isolated power delivery during standby. | Use Scenario: Driving parallel white LEDs (VF ≈ 3.2–3.6 V) from a single 3.6-V Li-ion cell in flash modules or backlight units. IC Role / Device Role / Timing Role: Fixed 5-V boost converter supplying constant-current LED driver ICs; leverages down-conversion mode near end-of-charge. Use Value: Maintains consistent LED brightness across entire battery discharge curve - avoids dimming artifacts seen with basic boost-only topologies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61201DRCT | Fixed 3.3-V output; identical package, pinout, and feature set except output voltage and FB configuration. | Used where 3.3-V logic rails dominate (e.g., microcontrollers, sensors); not suitable for 5-V USB or peripheral interfaces. | Select TPS61201DRCT only when system requires 3.3 V and shares same layout - no redesign needed beyond output capacitor value. |
| MAX17062ETA+ | Fixed 5-V output; 2-MHz switching; lower 22-μA quiescent current; requires external compensation; different pinout and package (12-pin TDFN). | Better suited for ultra-low-power wearables needing longer shelf life; lacks integrated down-conversion mode. | Choose MAX17062ETA+ only when quiescent current is primary constraint and layout flexibility exists - not drop-in compatible. |
Compared with TPS61202DRCT, TPS61201DRCT offers identical functionality at 3.3 V for logic-rail applications, while MAX17062ETA+ trades down-conversion capability for lower IQ and higher frequency - making TPS61202DRCT the optimal choice for 5-V systems requiring seamless input-voltage-range coverage and minimal external components.
Availability
TPS61202DRCT is available at Aetrix Electronics and suitable for portable audio players, cellular phones, personal medical products, and white LED driver circuits requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS61202DRCT 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 high-efficiency DC/DC conversion.
The TPS6120x product line was engineered specifically for ultra-low-input-voltage battery-powered applications - delivering regulated output from near-dead cells while integrating protection, mode automation, and thermal robustness in miniature packages.
FAQ
What is the exact output voltage tolerance of the TPS61202DRCT?
The TPS61202DRCT provides a fixed nominal output voltage of 5.0 V with a guaranteed tolerance of ±1% (4.95 V to 5.05 V) across temperature, line, and load conditions - achieved via factory-trimmed internal feedback divider, eliminating need for external resistors and associated tolerance stack-up.
Does the TPS61202DRCT support true load disconnect during shutdown?
Yes, the TPS61202DRCT fully disconnects the load from the input when EN is pulled low: internal switches open, VOUT floats, and reverse current flow is blocked. This results in shutdown current below 2 μA and prevents battery drain in standby - a critical requirement for medical and IoT endpoint devices.
Can the TPS61202DRCT operate with input voltages higher than its output voltage?
Yes, the TPS61202DRCT automatically transitions into Down Conversion mode when VIN ≥ VOUT. In this mode, it regulates 5 V output from inputs up to 5.5 V by modulating rectifier switch conduction - enabling operation across full Li-ion voltage range (3.0–4.2 V) without external buck circuitry.
What is the purpose of the VAUX pin on the TPS61202DRCT?
The VAUX pin on the TPS61202DRCT supplies internal bias voltage (2.4–5.5 V) and enables controlled soft-start: the device first charges the VAUX capacitor to ~2.5 V before enabling VOUT, limiting inrush current and preventing output overshoot - especially important when large output capacitors are used.
How does the PS pin affect efficiency and switching behavior in the TPS61202DRCT?
When PS = Low, the TPS61202DRCT enters Power Save mode - reducing switching frequency at light loads to maintain >85% efficiency down to 100 μA output current. When PS = High, it forces fixed 1.25–1.65 MHz operation, improving EMI predictability but lowering light-load efficiency by ~10–15 percentage points.
TPS61202DRCT 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- 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)
TPS61202DRCT FAQ
1.How can I place an order for TPS61202DRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61202DRCT 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 TPS61202DRCT reliable?
The price and inventory of TPS61202DRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61202DRCT is usually 5 days.
3.What payment methods are accepted for TPS61202DRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61202DRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61202DRCT?
TPS61202DRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61202DRCT 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 TPS61202DRCT?
For technical support, including TPS61202DRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61202DRCT requirements.
6.How does Aetrix verify that TPS61202DRCT is sourced from the original manufacturer or authorized distributors?
All TPS61202DRCT 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 TPS61202DRCT meets industry standards.
7.What is the process for return or replacement of TPS61202DRCT?
All TPS61202DRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61202DRCT, 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 TPS61202DRCT part is unused and in its original packaging.
Return procedure for TPS61202DRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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