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Texas Instruments TPS563231DRLR
- Part No.:
- TPS563231DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TPS563231DRLR.pdf
- Description:
- IC REG BUCK ADJ 3A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:8,320
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Product details
Overview
TPS563231DRLR from Texas Instruments is a 3-A synchronous step-down DC/DC converter in SOT563 package, featuring D-CAP3™ control mode, 4.5–17-V input range, and 0.6–7-V adjustable output. It integrates 95-mΩ high-side and 55-mΩ low-side MOSFETs, operates at 600-kHz fixed switching frequency, and delivers up to 95% peak efficiency at 3.3 V/3 A - ideal for compact, high-efficiency point-of-load regulation in digital TV and STB power supplies.
For engineers reviewing the TPS563231DRLR datasheet, TPS563231DRLR pinout, TPS563231DRLR application, or TPS563231DRLR equivalent, key selection criteria include its pulse-skip light-load operation, 12-µA shutdown current, ±2% FB voltage accuracy over temperature, hiccup-mode overcurrent protection, and pre-biased startup capability - all critical for reliable, low-quiescent-power embedded power designs.
Technical Context
The TPS563231DRLR implements adaptive on-time D-CAP3™ control with internal ramp injection, enabling stable operation with ultra-low-ESR ceramic or polymer output capacitors without external compensation. Its valley-current sensing provides cycle-by-cycle overcurrent limiting, while zero-cross detection enables seamless transition into discontinuous conduction mode (DCM) and pulse-skip mode (PSM) below ~100 mA load.
Functional modes include continuous conduction mode (CCM) up to 3 A, PSM for high light-load efficiency, and non-latching thermal shutdown (160°C) and UVLO (4.3-V rising threshold). The device supports startup from pre-biased outputs via internal soft-start (1.5 ms) and EN-controlled enable with 1.24-V typical threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports wide industrial and consumer input rails including 5 V, 9 V, 12 V, and 15 V systems. |
| Output Current | 3 A continuous - sufficient for powering SoCs, FPGAs, and memory subsystems in digital video equipment. |
| Switching Frequency | 600 kHz - enables compact magnetics and predictable EMI filtering with minimal layout sensitivity. |
| Feedback Accuracy | ±2% at 25°C, ±2.5% over –40°C to 125°C - ensures tight output regulation across temperature for precision analog and digital loads. |
| Shutdown Current | <12 µA - minimizes system standby power in always-on consumer electronics such as set-top boxes. |
| Thermal Protection | Non-latch thermal shutdown at 160°C with 25°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Package | SOT563 (DRL), 1.6 mm × 1.6 mm - ultra-small footprint suitable for space-constrained PCBs in portable and embedded applications. |
Pinout & Package
SOT563 (DRL) package: 6-pin, 1.6 mm × 1.6 mm body, 0.5-mm pitch, exposed thermal pad (connected internally to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Connects to 4.5–17-V source; requires local 10-µF ceramic decoupling capacitor placed adjacent to pin. |
| SW | Switch node | Drain connection of high-side FET and source of low-side FET; must be routed short/wide to minimize EMI and voltage spikes. |
| GND | Power ground | Internal connection to low-side FET source; ties to system ground plane and CIN/COUT grounds with minimal impedance path. |
| FB | Feedback input | Monitors output voltage via resistor divider; 600-mV reference enables precise VOUT = 0.6 × (1 + RFBT/RFBB). |
| EN | Enable control | Active-high logic input (1.24-V typical threshold); supports VIN tie-off or resistor-divider UVLO programming. |
| BST | Bootstrap supply | Supplies gate drive for high-side FET; requires 0.1-µF ceramic capacitor between BST and SW pins. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control mode | Enables stable regulation with ceramic/polymer output caps without external compensation - reduces BOM count and design iteration time. |
| Pulse-skip mode (PSM) | Maintains >80% efficiency down to 10 mA load - extends battery life or reduces standby losses in always-on consumer devices. |
| Pre-biased output startup | Allows safe ramp-up when VOUT is already charged - essential for hot-swap and multi-rail sequencing in complex power systems. |
| Hiccup-mode OCP | Shuts down for 24 ms after UVP detection, then retries - limits average power dissipation during sustained short-circuit faults. |
| Low quiescent current | 220–300 µA operating current and <12 µA shutdown current - meets stringent energy-efficiency standards (e.g., ENERGY STAR®). |
Applications
| Application 1 | Application 2 |
|---|---|
Use Scenario: Powering main SoC and DDR memory in digital set-top boxes requiring 3.3 V/3 A with fast transient response to video decode bursts. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3 V rail with D-CAP3™ fast transient response and hiccup-mode fault protection. Use Value: Eliminates need for external compensation components and maintains <±5% output deviation during 0–3-A load steps - simplifies layout and improves system reliability. | Use Scenario: Generating 1.8 V core supply for HDMI transceivers and video processors in high-definition Blu-ray™ disc players. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load converter with pre-biased startup supporting hot-plug HDMI interface initialization. Use Value: Achieves >90% efficiency at 1.8 V/2 A and starts cleanly even when 1.8-V rail is pre-charged - avoids brownout resets during media insertion. |
| Application 3 | Application 4 |
Use Scenario: Supplying 5 V/2 A to network PHY and USB controller in home gateway routers with strict thermal constraints. IC Role / Device Role / Timing Role: Synchronous buck regulator operating in CCM with 600-kHz switching to meet conducted EMI limits and thermal budget. Use Value: Delivers full 2-A load within 135.8°C/W θJA thermal resistance using only top-side copper - avoids heatsink or fan requirements. | Use Scenario: Providing 1.05 V/3 A to FPGA I/O banks in surveillance camera modules where board space is limited to <100 mm². IC Role / Device Role / Timing Role: Ultra-compact 3-A buck converter in 1.6-mm × 1.6-mm SOT563 package with integrated FETs and internal soft-start. Use Value: Reduces total solution size by 40% vs discrete controller+MOSFET solutions while maintaining ±2% output accuracy over –40°C to 125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563240DRLR | Same SOT563 package, 4.5–17-V input, but 2-A rated; uses identical D-CAP3™ control and pinout. | Limited to 2-A max output - insufficient for 3-A SoC rails but adequate for lower-power peripherals. | Select when load current ≤2 A and cost optimization is prioritized over headroom. |
| MP2332HGTL-Z | 3-A, 4.5–17-V input, SOT563, but uses constant-on-time (COT) control; 1.2-V FB reference vs 0.6 V. | Requires different feedback divider ratio; lacks pre-biased startup and hiccup-mode OCP. | Choose for COT-based designs already using Monolithic Power Systems toolchain; verify startup behavior with pre-biased rails. |
Compared with TPS563240DRLR, the TPS563231DRLR delivers 50% higher output current in identical footprint and control architecture; versus MP2332HGTL-Z, it offers tighter FB accuracy, built-in pre-bias support, and more robust hiccup-mode fault recovery - making it preferable for mission-critical consumer video power rails.
Availability
TPS563231DRLR is available at Aetrix Electronics and suitable for digital TV power supplies, set-top box (STB) main rails, and surveillance camera SoC regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS563231DRLR 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-reliability power conversion solutions.
The TPS563231DRLR belongs to TI's D-CAP3™ family of easy-to-use synchronous buck regulators, designed specifically for space-constrained consumer electronics requiring high efficiency, fast transient response, and minimal external components.
FAQ
What is the maximum output current supported by the TPS563231DRLR?
The TPS563231DRLR supports up to 3 A of continuous output current in continuous conduction mode (CCM) at ambient temperatures up to 85°C with proper PCB thermal design. Derating applies above 85°C ambient, per the 135.8°C/W θJA thermal metric and 125°C maximum junction temperature specification. The device employs valley-current limiting with hiccup-mode protection to sustain temporary overloads without latch-up.
Does the TPS563231DRLR support startup from a pre-biased output voltage?
Yes, the TPS563231DRLR supports startup from a pre-biased output. When the FB pin voltage exceeds the internal 0.6-V reference at power-on, the device delays switching until the internal soft-start ramp surpasses the present FB voltage, then ramps up smoothly to regulation. This prevents reverse current flow and ensures controlled turn-on in multi-rail or hot-swap systems - a confirmed feature documented in Section 7.3.2 of the TPS563231DRLR datasheet.
What is the recommended bootstrap capacitor value for the TPS563231DRLR?
The TPS563231DRLR requires a 0.1-µF ceramic capacitor connected between the BST and SW pins. TI specifies X7R or better dielectric with 10-V or higher voltage rating to withstand the BST-to-SW voltage swing (up to 5 V). Placement must be adjacent to the IC with minimal loop area to ensure robust high-side gate drive and prevent shoot-through during switching transitions.
Can the TPS563231DRLR operate with ceramic output capacitors only?
Yes, the TPS563231DRLR is explicitly designed for use with low-ESR ceramic output capacitors - including multi-layer ceramics - thanks to its D-CAP3™ control architecture with internal ramp injection. No external compensation is required. TI recommends 20–68 µF total capacitance (e.g., two parallel 22-µF Murata GRM21BR61A226ME44L units) with typical ESR ≤5 mΩ for optimal stability and transient performance.
What protection features are integrated into the TPS563231DRLR?
The TPS563231DRLR integrates cycle-by-cycle valley-current limiting, hiccup-mode overcurrent protection (UVP-triggered, 24-ms off-time), non-latching thermal shutdown (160°C), non-latching input UVLO (4.3-V rising threshold), and output undervoltage protection. All protections are fully specified in Section 6.5 of the datasheet and operate without external components - ensuring robust operation in unattended consumer electronics deployments.
TPS563231DRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 3A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
TPS563231DRLR FAQ
1.How can I place an order for TPS563231DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563231DRLR 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 TPS563231DRLR reliable?
The price and inventory of TPS563231DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563231DRLR is usually 5 days.
3.What payment methods are accepted for TPS563231DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563231DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563231DRLR?
TPS563231DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563231DRLR 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 TPS563231DRLR?
For technical support, including TPS563231DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563231DRLR requirements.
6.How does Aetrix verify that TPS563231DRLR is sourced from the original manufacturer or authorized distributors?
All TPS563231DRLR 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 TPS563231DRLR meets industry standards.
7.What is the process for return or replacement of TPS563231DRLR?
All TPS563231DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS563231DRLR, 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 TPS563231DRLR part is unused and in its original packaging.
Return procedure for TPS563231DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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