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Texas Instruments TPS63802DLAT
- Part No.:
- TPS63802DLAT
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerVFDFN
- Datasheet:
-
TPS63802DLAT.pdf
- Description:
- IC REG BUCK BOOST ADJ 2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,158
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Product details
Overview
TPS63802DLAT from Texas Instruments is a 2-A synchronous buck-boost DC/DC converter in a 10-pin DFN (VSON-HR) package, operating across 1.3 V–5.5 V input and delivering adjustable 1.8 V–5.2 V output. It features 11-µA quiescent current, seamless automatic mode transitions (buck/buck-boost/boost), and true shutdown with load disconnect-enabling use in battery-powered IoT sensors and portable POS terminals.
For engineers reviewing the TPS63802DLAT datasheet, TPS63802DLAT pinout, TPS63802DLAT application, or TPS63802DLAT equivalent, key selection criteria include its 2-A output capability at VIN ≥ 2.3 V / VOUT = 3.3 V, 4-cycle buck-boost architecture for minimal ripple near VI ≈ VO, integrated overvoltage/overtemperature protection, and compatibility with 0.47-µH inductors and 22-µF output capacitors.
Technical Context
The TPS63802DLAT employs a peak-current-mode control architecture with four internal switches, enabling synchronous operation across all modes. Its 3-phase buck-boost cycle (boost-charge, buck-discharge, VI-to-VO connect) minimizes RMS current and conduction losses when input and output voltages are closely matched.
It integrates dual ground domains (AGND and PGND), programmable PFM/PWM mode selection via MODE pin, precise enable threshold (1.1 V typ.), and power-good monitoring with 95% rising / 90% falling thresholds referenced to nominal VOUT. Soft-start ramps current limit over 224 µs to limit inrush while supporting pre-biased startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.3 V to 5.5 V; supports single-cell Li-ion, LiFePO₄, and multi-cell alkaline/NiMH batteries without external LDO pre-regulation. |
| Output Voltage Range | Adjustable 1.8 V to 5.2 V via external resistor divider; FB pin regulates to 500 mV reference, enabling precise rail generation for MCU cores or I/O. |
| Max Output Current | 2 A at VIN ≥ 2.3 V and VOUT = 3.3 V; sustained full-load delivery across buck, boost, and buck-boost modes with thermal derating above 125°C junction. |
| Quiescent Current | 11 µA typical; enables >90% efficiency at 100 µA load, critical for always-on battery-backed meters and wireless sensor nodes. |
| Switching Frequency | 1.4 MHz (buck-boost), 1.6 MHz (buck), 2.1 MHz (boost); high-frequency operation allows compact 0.47-µH inductor and reduces EMI filter size. |
| Protection Features | Integrated OVP (5.7 V typ.), UVP (UVLO rising = 1.7 V), thermal shutdown (150°C), reverse-current limiting (–0.9 A), and true shutdown with load disconnect. |
| Package | 10-pin VSON-HR (DFN), 3.0 mm × 2.0 mm, 0.5 mm pitch; thermally enhanced HotRod™ construction with RθJB = 23.4°C/W for PCB-level heat dissipation. |
Pinout & Package
TPS63802DLAT uses a 10-pin VSON-HR (DFN) package measuring 3.0 mm × 2.0 mm with 0.5 mm pitch and exposed thermal pad. The package supports high-density layout and efficient thermal transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Digital enable with 1.1 V typical threshold; must be terminated-floating causes undefined operation; supports RC-delayed power-up sequencing. |
| 2 - MODE | PFM/PWM mode select | LOW = automatic power-save (PFM) for light-load efficiency; HIGH = forced PWM for low-noise, fixed-frequency operation; not floating. |
| 3 - AGND | Analog ground reference | Separate ground for feedback and control circuitry; requires low-noise connection to system AGND plane, distinct from power ground. |
| 4 - FB | Output voltage feedback | Senses divided VOUT to regulate against 500 mV internal reference; supports 1.8–5.2 V output with ≤100 kΩ lower-divider resistor. |
| 5 - PG | Power-good open-drain output | Asserts high-Z when VOUT ≥ 95% of target; pulls low at <90%; requires external pull-up; used for rail sequencing or system reset assertion. |
| 6 - VOUT | Power stage output | Main regulated output node; connects to output capacitor and load; designed for low-ESR ceramic capacitors ≥22 µF (for VO > 2.3 V). |
| 7 - L2 | Inductor connection (buck path) | Connects to one terminal of 0.47-µH inductor; carries bidirectional current during buck and buck-boost phases. |
| 8 - GND | Power ground | Primary return path for high-current switching loops; must be connected to low-impedance PGND plane adjacent to L1/L2 pins. |
| 9 - L1 | Inductor connection (boost path) | Connects to same inductor as L2; completes boost/buck-boost switching loop; shares current path with L2 in 3-cycle operation. |
| 10 - VIN | Input supply voltage | Accepts 1.3–5.5 V; includes UVLO (rising 1.7 V, falling 1.25 V); supports start-up into pre-biased outputs and reverse-current operation. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic 3-mode operation | Seamlessly transitions between buck, buck-boost (3-cycle), and boost based on VI/VO ratio-eliminates manual mode control and reduces output ripple near crossover. |
| True shutdown with load disconnect | Internal FET disconnects VOUT from VIN during shutdown, preventing backfeed and enabling safe hot-swap or battery isolation in backup systems. |
| Reverse current capability | Supports controlled energy flow from VOUT to VIN (–0.9 A peak); enables bidirectional power management in USB PD sink-source or battery charging applications. |
| Pre-biased output startup | Enters forced PFM during soft-start to avoid output voltage collapse when powering loads already holding charge-critical for hot-plug interfaces. |
| Integrated OVP and IVP | Output overvoltage protection triggers at 5.7 V; input overvoltage protection (reverse-boost) activates if VIN exceeds threshold, forcing PFM and asserting PG low. |
Applications
| Portable Point-of-Load Regulation | System Pre-Regulator for Telematics |
|---|---|
|
Use Scenario: Powering low-voltage MCU cores and peripherals in handheld POS terminals or smart locks using single-cell Li-ion (2.7–4.2 V). IC Role / Device Role: Primary buck-boost regulator delivering stable 3.3 V or 1.8 V from varying battery voltage-operating in buck mode at full charge, boost mode near depletion. Use Value: Eliminates need for separate buck + boost ICs; 2-A capability supports burst-mode radio transmission; 11-µA IQ extends battery life in sleep states. |
Use Scenario: Supplying 3.3 V to CAN transceivers, GPS modules, and cellular modems in automotive telematics units powered by 12-V battery with wide transient range (6–16 V). IC Role / Device Role: Intermediate pre-regulator stepping down unregulated 5–12 V input to clean 3.3 V rail-operating in buck mode under normal conditions, boosting during cold-crank dips. Use Value: Maintains system uptime during engine cranking; small 21.5 mm² solution fits tight ECU layouts; thermal robustness ensures reliability in under-hood environments. |
| Battery Backup Supply for Meters | Thermoelectric Cooler (TEC) Bias |
|
Use Scenario: Providing uninterrupted 3.3 V to RTC and memory in electricity meters during AC mains failure, backed by supercapacitor or coin cell. IC Role / Device Role: Bidirectional buck-boost managing energy flow between main supply and backup source-charging supercap when AC is present, discharging to maintain VOUT during outage. Use Value: Reverse-current operation enables efficient backup sourcing; true shutdown isolates backup source when not needed, minimizing self-discharge. |
Use Scenario: Driving precision ±2 V to ±3 V bias for thermoelectric coolers in optical transceivers requiring stable temperature control within ±0.1°C. IC Role / Device Role: Low-noise, adjustable-output regulator supplying TEC driver stage-configured for 2.5 V output with tight load regulation (0.1%) and low ripple in forced-PWM mode. Use Value: High PSRR and 1.4 MHz switching minimize noise coupling into analog TEC control loop; 0.47-µH inductor enables compact, low-profile design near optics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63805YFFR | Same 11-µA IQ and 4-A switch current, but in 1.2-mm² WCSP package; lacks reverse-current capability and has lower max output current (1.5 A). | Targeted at ultra-thin wearables where board area is critical; unsuitable for bidirectional or high-current backup applications. | Select TPS63805YFFR only when footprint is constrained and reverse operation is unnecessary; verify thermal performance in sealed enclosures. |
| TPS63811DYFR | I²C-programmable output (3.3 V/3.45 V fixed or dynamic), higher 15-µA IQ, 5.2-A switch current, and 16-µF min CO; WCSP package. | Designed for systems requiring firmware-controlled voltage scaling (e.g., adaptive SoC rails); higher IQ reduces light-load efficiency vs. TPS63802DLAT. | Choose TPS63811DYFR when digital control and higher current are required; accept trade-off in quiescent power for programmability. |
Compared with TPS63805YFFR and TPS63811DYFR, the TPS63802DLAT uniquely balances ultra-low IQ, 2-A continuous output, reverse-current support, and DFN thermal performance-making it optimal for space-constrained, battery-sensitive industrial and metering designs where analog flexibility and reliability outweigh programmability needs.
Availability
TPS63802DLAT is available at Aetrix Electronics and suitable for portable POS terminals, battery-backed electricity meters, and IoT sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for TPS63802DLAT 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 ICs, with decades of expertise in high-efficiency DC/DC conversion and automotive-grade reliability.
The TPS63802DLAT belongs to TI's high-density buck-boost converter family, engineered for battery-powered and energy-harvesting applications demanding wide input range, ultra-low quiescent current, and seamless mode transitions without external control logic.
FAQ
What is the minimum input voltage required for the TPS63802DLAT to start up and deliver full 2-A output?
The TPS63802DLAT requires a minimum input voltage of 1.8 V to initiate startup, but full 2-A output capability is only guaranteed when VIN ≥ 2.3 V at VOUT = 3.3 V. Below 2.3 V, output current is reduced due to switch current limiting and conduction losses-verified per Section 8.5 of the SLVSEU9D datasheet.
Can the TPS63802DLAT operate with a single 0.47-µH inductor, and what are the layout requirements?
Yes, the TPS63802DLAT is specifically optimized for use with a single 0.47-µH inductor (±10%), as confirmed in the Typical Application schematic and Section 8.3. Layout requires short, low-inductance paths between L1, L2, VIN, VOUT, and GND pins; the exposed thermal pad must be soldered to a solid PCB thermal plane with ≥4 thermal vias for reliable 2-A operation.
Does the TPS63802DLAT support powering a load that already has voltage on its output (pre-biased startup)?
Yes, the TPS63802DLAT supports pre-biased output startup via forced PFM operation during soft-start, preventing output voltage collapse or damaging inrush currents. This behavior is explicitly documented in Section 9.3.5 and validated in Figure 9-4 of the SLVSEU9D datasheet.
How does the MODE pin affect efficiency and noise performance of the TPS63802DLAT?
When MODE = LOW, the TPS63802DLAT operates in power-save (PFM) mode-reducing switching frequency at light loads to achieve >90% efficiency down to 100 µA. When MODE = HIGH, it forces fixed-frequency PWM operation, minimizing output voltage ripple and EMI at the expense of higher light-load IQ (≈11 µA remains unchanged).
What protection features are integrated into the TPS63802DLAT, and how do they respond during fault conditions?
The TPS63802DLAT integrates overvoltage protection (OVP trips at 5.7 V on VOUT), undervoltage lockout (UVLO rising = 1.7 V), thermal shutdown (150°C with 20°C hysteresis), reverse-current limiting (–0.9 A), and true shutdown. During OVP or thermal events, switching halts and PG asserts low; UVLO disables regulation until VIN rises above threshold.
TPS63802DLAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerVFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON-HR (3x2)
TPS63802DLAT FAQ
1.How can I place an order for TPS63802DLAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS63802DLAT 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 TPS63802DLAT reliable?
The price and inventory of TPS63802DLAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS63802DLAT is usually 5 days.
3.What payment methods are accepted for TPS63802DLAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS63802DLAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS63802DLAT?
TPS63802DLAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS63802DLAT 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 TPS63802DLAT?
For technical support, including TPS63802DLAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS63802DLAT requirements.
6.How does Aetrix verify that TPS63802DLAT is sourced from the original manufacturer or authorized distributors?
All TPS63802DLAT 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 TPS63802DLAT meets industry standards.
7.What is the process for return or replacement of TPS63802DLAT?
All TPS63802DLAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS63802DLAT, 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 TPS63802DLAT part is unused and in its original packaging.
Return procedure for TPS63802DLAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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