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Texas Instruments TPS563203DRLR
- Part No.:
- TPS563203DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TPS563203DRLR.pdf
- Description:
- IC REG BUCK ADJ 3A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:3,287
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Product details
Overview
TPS563203DRLR from Texas Instruments is a 3A synchronous buck converter in SOT563 package, operating from 4.2V to 17V input and delivering 0.6V–7V output with ±1.5% reference accuracy at 25°C, 600kHz fixed switching frequency, and Eco-mode for high light-load efficiency - used in digital STB power rails and building automation subsystems.
For engineers reviewing the TPS563203DRLR datasheet, TPS563203DRLR pinout, TPS563203DRLR application, or TPS563203DRLR equivalent, key selection criteria include its integrated 100mΩ/55mΩ FETs, 110μA quiescent current, 1.4ms internal soft-start, D-CAP3™ control mode enabling ceramic-capacitor compatibility without external compensation, and –40°C to 125°C junction temperature operation.
Technical Context
The TPS563203DRLR implements D-CAP3™ adaptive on-time control with internal ramp injection to emulate output ripple, eliminating ESR dependency and enabling stable regulation with ultra-low-ESR ceramic capacitors. Its Eco-mode dynamically transitions between CCM and DCM to maintain high efficiency across load range.
It integrates cycle-by-cycle valley-current overcurrent protection, non-latching UVLO (3.4V shutdown / 3.8V wake-up), thermal shutdown at 155°C with 20°C hysteresis, and supports prebiased start-up via FB voltage comparison against internal reference - all within a 1.6mm × 1.6mm SOT563 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 17V - supports wide industrial and consumer DC bus inputs including 5V, 12V, and 15V rails. |
| Output Current | 3A continuous - delivers full rated current with thermal derating per RθJA = 147.4°C/W on standard PCB. |
| Switching Frequency | 600kHz - enables compact magnetics and filtering while balancing efficiency and EMI performance. |
| Reference Voltage | 0.6V ±1.5% at 25°C - sets precise output via external resistor divider; enables 0.6V–7V programmable VOUT. |
| Quiescent Current | 110μA in Eco-mode - minimizes standby power loss in always-on building automation and STB applications. |
| FET Integration | 100mΩ high-side + 55mΩ low-side NFETs - eliminates external MOSFETs and gate drivers, reducing BOM count and layout area. |
| Soft-Start Time | 1.4ms fixed - prevents inrush current and ensures controlled output ramp during power-up. |
Pinout & Package
SOT563 (DRL) package: 6-pin, 1.6mm × 1.6mm surface-mount outline with exposed thermal pad (not electrically connected); optimized for high-density PCB layouts and thermal dissipation via bottom-side copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply rail | Connects to 4.2–17V source; requires local 10μF ceramic decoupling near pin. |
| SW (Pin 2) | Switch node | Drives external inductor; high dv/dt node requiring minimized trace area and tight coupling to GND. |
| GND (Pin 3) | Power and signal ground | Common return for low-side FET and controller; must be star-connected to FB and input/output caps. |
| BST (Pin 4) | Bootstrap supply | Requires 0.1μF capacitor to SW; enables high-side gate drive above VIN for efficient synchronous rectification. |
| EN (Pin 5) | Enable control | Active-high logic input (1.21V typical threshold); internal 1μA pulldown allows direct connection to VIN via 100kΩ resistor. |
| FB (Pin 6) | Feedback input | Monitors output via resistor divider; connects to VOUT at single-point GND to avoid noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control mode | Enables fast transient response and stability with zero external compensation - supports polymer and ceramic output capacitors. |
| Eco-mode operation | Reduces switching frequency proportionally to load current below ~300mA, maintaining >85% efficiency at 10mA output. |
| Prebiased start-up support | Allows safe startup when output capacitor is precharged; avoids reverse current by delaying switching until internal reference exceeds FB voltage. |
| 95% maximum duty cycle | Extends on-time at low VIN (e.g., 4.2V–7V) to sustain regulation, with frequency dropping to ~200kHz to preserve transient response. |
| Integrated protection suite | Includes non-latching UVLO, cycle-by-cycle OCP, hiccup-mode UVP, and thermal shutdown at 155°C - no external fault-handling circuitry required. |
Applications
| Digital Set-Top Box (STB) | Building Automation Controller |
|---|---|
Use Scenario: Powering SoC core voltage (1.05V/3A) and memory interface rails in cable/satellite STB platforms with variable input from 12V wall adapters. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12V input to tightly regulated 1.05V output using D-CAP3™ for rapid load-step response during video decode bursts. Use Value: Eco-mode maintains >88% efficiency at standby (10mA), extending system uptime and reducing thermal load in enclosed chassis. |
Use Scenario: Supplying 3.3V/2A to microcontroller, sensors, and RS-485 transceivers in HVAC control panels powered from 12–15V DC distribution buses. IC Role / Device Role / Timing Role: Compact, self-contained buck converter replacing discrete FET+controller solutions; operates across –40°C to 85°C ambient with no derating. Use Value: Integrated 100mΩ/55mΩ FETs and 1.6mm × 1.6mm SOT563 reduce board area by 40% vs. comparable 8-pin SOIC converters. |
| TV Main Board Power | Broadband Fixed-Line Access |
Use Scenario: Generating 5V/3A for USB peripherals, audio DACs, and display interface ICs in smart TV main boards with 12V or 17V input rails. IC Role / Device Role / Timing Role: High-efficiency intermediate regulator supporting dynamic load changes during HDMI hot-plug and audio playback events. Use Value: 600kHz switching frequency enables use of 4.7μH shielded inductors under 3mm height, meeting strict mechanical clearance requirements. |
Use Scenario: Providing 1.2V/3A to GPON/EPON line card processors and PHYs in fiber access terminals operating from 48V-to-12V intermediate bus. IC Role / Device Role / Timing Role: Secondary-stage buck converter after primary isolation; handles 12V input with high PSRR to suppress upstream switching noise. Use Value: ±1.5% reference accuracy and D-CAP3™ loop stability ensure <±20mV output deviation across line/load/temperature - critical for SERDES compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563206DRLR | FCCM mode instead of Eco-mode; 350μA quiescent current; fixed 600kHz frequency across all loads. | Better suited for noise-sensitive applications requiring constant-frequency operation and lower output ripple at light loads. | Select TPS563206DRLR when EMI filtering is prioritized over light-load efficiency; not drop-in due to different control behavior. |
| MP2333HGTL-Z | Monolithic 3A buck with 4.5–21V input, 650kHz frequency, 120μA IQ, but uses voltage-mode control and requires external compensation. | Lacks D-CAP3™'s ceramic-capacitor optimization; needs additional feedback components and loop tuning effort. | Choose MP2333HGTL-Z only if design already uses voltage-mode architecture or requires wider input range beyond 17V. |
Compared with TPS563203DRLR, TPS563206DRLR trades light-load efficiency for frequency stability and lower ripple, while MP2333HGTL-Z adds design complexity with external compensation but extends input voltage range - making TPS563203DRLR optimal for space-constrained, efficiency-critical 4.2–17V applications.
Availability
TPS563203DRLR is available at Aetrix Electronics and suitable for digital set-top box, building automation, and broadband fixed-line access applications requiring stable component supply, long-term manufacturability, and automotive-grade reliability validation.
Supply support for TPS563203DRLR 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-reliability power conversion ICs.
The TPS56320x product line was designed specifically for space-constrained, cost-sensitive industrial and consumer systems needing simple, efficient, and robust 3A DC/DC conversion - emphasizing minimal external components and seamless ceramic capacitor compatibility.
FAQ
What is the recommended input capacitor for TPS563203DRLR?
The TPS563203DRLR requires a minimum 10μF X5R/X7R ceramic capacitor placed as close as possible to the VIN and GND pins. TI's reference design uses two 10μF capacitors in parallel (C1 and C2) to reduce impedance across frequency and handle peak input currents. Larger values up to 47μF improve hold-up time during line transients but do not affect loop stability due to D-CAP3™'s inherent compensation.
Does TPS563203DRLR support output voltages below 0.6V?
No, the TPS563203DRLR has a fixed 0.6V internal reference voltage and is not designed for sub-0.6V outputs. The device's feedback architecture and error amplifier are optimized for 0.6V–7V range; attempting lower outputs violates electrical specifications and may cause regulation failure or instability. For sub-0.6V applications, consider TI's TPS62864 or similar adjustable-output converters with lower reference options.
Can TPS563203DRLR be used with aluminum polymer output capacitors?
Yes, the TPS563203DRLR's D-CAP3™ control mode explicitly supports low-ESR aluminum polymer (POSCAP/SP-CAP) and ceramic capacitors without external compensation. TI's datasheet confirms stable operation with 22μF polymer capacitors in typical 1.05V/3A designs. Ensure capacitor ripple current rating exceeds 1.5× RMS inductor current and ESR remains below 10mΩ at 100kHz.
What is the thermal performance of TPS563203DRLR on a 2-layer PCB?
On a standard 2-layer evaluation board (2oz copper, 73°C/W effective θJA), the TPS563203DRLR delivers full 3A output at 25°C ambient with ≤45°C junction rise. At 60°C ambient, derating begins above 2.2A. Layout best practices - including 200mm² thermal pad copper pour connected to GND plane via ≥4 thermal vias - are essential to achieve this performance; standalone SOT563 without thermal relief reaches thermal limit at ~1.8A.
How does the EN pin behave during power sequencing?
The EN pin of TPS563203DRLR features an internal 1μA pulldown, ensuring default disable state. It activates when voltage exceeds 1.21V (typical) and deactivates below 1.00V, with 200mV hysteresis preventing chatter. When driven from a resistor divider off VIN, a 100kΩ pullup ensures reliable turn-on across 4.2–17V input range; direct connection to a 3.3V GPIO is also valid as EN tolerates up to 5.5V.
TPS563203DRLR 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):
- 4.2V
- 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
TPS563203DRLR FAQ
1.How can I place an order for TPS563203DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563203DRLR 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 TPS563203DRLR reliable?
The price and inventory of TPS563203DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563203DRLR is usually 5 days.
3.What payment methods are accepted for TPS563203DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563203DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563203DRLR?
TPS563203DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563203DRLR 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 TPS563203DRLR?
For technical support, including TPS563203DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563203DRLR requirements.
6.How does Aetrix verify that TPS563203DRLR is sourced from the original manufacturer or authorized distributors?
All TPS563203DRLR 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 TPS563203DRLR meets industry standards.
7.What is the process for return or replacement of TPS563203DRLR?
All TPS563203DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS563203DRLR, 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 TPS563203DRLR part is unused and in its original packaging.
Return procedure for TPS563203DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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