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Texas Instruments TPS563300DRLR
- Part No.:
- TPS563300DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS563300DRLR.pdf
- Description:
- IC REG BUCK ADJ 3A SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:3,621
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Product details
Overview
TPS563300DRLR from Texas Instruments is a 3-A synchronous buck DC-DC converter in SOT583 package, supporting 3.8-V to 28-V input and 0.8-V to 22-V output. It integrates 76-mΩ high-side and 32-mΩ low-side MOSFETs, delivers 20-μA quiescent current, and operates at 500-kHz fixed frequency-ideal for compact industrial power rails (e.g., 12-V or 24-V input systems powering 3.3-V/5-V logic).
For engineers reviewing the TPS563300DRLR datasheet, TPS563300DRLR pinout, TPS563300DRLR application, or TPS563300DRLR equivalent, key selection criteria include its integrated FETs, PFM light-load efficiency, spread-spectrum EMI reduction, internal compensation eliminating external loop components, and prebias start-up capability.
Technical Context
The TPS563300DRLR uses fixed-frequency peak current mode control with internal loop compensation, enabling stable regulation across wide output voltage (0.8–22 V) and load (0–3 A) ranges without external compensation networks. Its 500-kHz switching frequency and 70-ns minimum on-time support high step-down ratios while maintaining transient response.
It implements dual-cycle-by-cycle overcurrent protection-4.2–5.8-A high-side limit and 2.9–4.5-A low-side limit-and features hiccup-mode UVP/OVP/OTP/UVLO with 165°C thermal shutdown and 30°C hysteresis. The bootstrap circuit (BST–SW) self-charges via internal UVLO monitoring at 2.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.8 V to 28 V - supports common industrial bus rails (5 V, 12 V, 19 V, 24 V) without external pre-regulation. |
| Output Current | 3 A continuous - sufficient for FPGA I/O banks, microcontroller cores, or multi-rail point-of-load applications. |
| Switching Frequency | 500 kHz ±10% - balances efficiency, size, and EMI; includes spread-spectrum modulation to reduce peak emissions. |
| Reference Voltage | 0.8 V ±1.5% at 25°C - enables precise output setting (e.g., 1.2 V, 3.3 V, 5 V) using standard resistor dividers. |
| Quiescent Current | 20 μA typical - extends battery life in always-on or low-power standby modes (e.g., smart sensors, IoT peripherals). |
| Junction Temp Range | –40°C to +150°C - qualified for harsh industrial environments including building automation and embedded PCs. |
| MOSFET RDS(on) | 76 mΩ (HS), 32 mΩ (LS) - minimizes conduction loss and thermal rise at full load in compact SOT583 footprint. |
Pinout & Package
The TPS563300DRLR is housed in an 8-pin SOT583 package (1.6 mm × 2.1 mm, 0.5-mm pitch), optimized for thermal performance and EMI reduction with dedicated power/ground routing and reserved pins for noise isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC (Pin 1) | Reserved | Must be left floating; no internal connection - improves noise immunity and layout flexibility. |
| EN (Pin 2) | Enable Input | Active-high logic; internal 0.7-μA pullup allows floating-enable operation or adjustable VIN UVLO via external resistor divider. |
| VIN (Pin 3) | Main Power Input | Supplies internal LDO and high-side FET; requires low-ESR bypass capacitor placed directly between VIN and GND. |
| GND (Pin 4) | Power Ground | Common return for controller, low-side FET source, and CIN/COUT; shortest possible path to CIN minimizes switching noise. |
| SW (Pin 5) | Switch Node | Connects to inductor; internally tied to HS drain and LS source - critical for EMI-sensitive PCB layout. |
| BST (Pin 6) | Bootstrap Supply | Connects 100-nF ceramic capacitor to SW; supplies gate drive for high-side FET - must be high-quality, low-ESR type. |
| NC (Pin 7) | Reserved | Must be left floating; no internal connection - enhances thermal and electrical isolation. |
| FB (Pin 8) | Feedback Input | Senses output voltage via resistor divider; 0.15-μA leakage ensures minimal error in precision regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Compensation | Eliminates external Type-II/III compensation network - reduces BOM count and design iteration time for 0.8–22-V outputs. |
| Pulse Frequency Modulation | Enables >85% efficiency at 1-mA load (VOUT=3.3 V, VIN=12 V) - critical for battery-powered peripherals and always-on subsystems. |
| Prebias Start-up | Supports monotonic ramp from 0 V into existing output voltage - prevents reverse current and system reset during hot-swap or rail sequencing. |
| Frequency Spread Spectrum | ±6% modulation around 500 kHz - lowers EMI peak amplitude by spreading energy across bandwidth, easing EMC compliance. |
| Non-latched Protections | OTP, OVP (115%), UVP (65%), UVLO, and cycle-by-cycle OC recover automatically after fault clears - improves system uptime in unattended equipment. |
Applications
| Industrial PC Power | Smart Speaker Core Rail |
|---|---|
Use Scenario: Distributed 12-V or 24-V bus powers CPU I/O, USB controllers, and display interfaces in fanless industrial PCs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated 3.3-V or 5-V supply with fast load-transient response. Use Value: Integrated 76-mΩ/32-mΩ MOSFETs and 500-kHz switching enable <12 mm² solution size while sustaining 3-A peak loads during burst processing. | Use Scenario: Battery-backed or wall-powered smart speaker requiring ultra-low quiescent current during voice-wait states. IC Role / Device Role / Timing Role: Main DC-DC converter for DSP, Wi-Fi SoC, and audio codec rails with PFM mode active below 50-mA load. Use Value: 20-μA IQ and hiccup-mode UVP prevent brownout-induced firmware crashes during battery sag or adapter dropout. |
| Building Automation Controller | Enterprise Projector Lamp Driver Support |
Use Scenario: DIN-rail mounted HVAC or lighting controller operating continuously in ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Point-of-load regulator converting 24-V field bus to 1.8-V/3.3-V for MCU and sensor interface ICs. Use Value: –40°C to +150°C junction rating and 112.2°C/W RθJA ensure reliable operation without forced air cooling in sealed enclosures. | Use Scenario: Auxiliary power supply in laser or LED-based enterprise projectors needing clean, low-noise 5-V/12-V rails for analog video processing. IC Role / Device Role / Timing Role: Secondary buck stage providing ripple-free supply to image signal processors and timing controllers. Use Value: Spread-spectrum EMI reduction and internal compensation eliminate filter chokes and complex feedback tuning - accelerating projector certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563201DRLR | Same SOT583 package, 2-A output, 500-kHz fixed frequency, but lacks spread-spectrum and has higher 25-μA IQ. | Suitable only for lower-current loads (<2 A); not recommended where EMI headroom is constrained or battery runtime is critical. | Select TPS563201DRLR only when cost sensitivity outweighs need for 3-A capability, EMI reduction, or lowest IQ. |
| MP2330HG-LF-P | 3-A SOT563 device (2.0×2.0 mm), 4.5–28-V input, 500-kHz, but no PFM mode and 300-μA IQ - no prebias start-up support. | Acceptable for line-powered applications with relaxed light-load efficiency and no hot-swap requirements. | Choose MP2330HG-LF-P only if board space permits larger SOT563 and system does not require PFM or monotonic start-up. |
Compared with TPS563201DRLR and MP2330HG-LF-P, the TPS563300DRLR uniquely combines 3-A capability, 20-μA IQ, spread-spectrum EMI suppression, and prebias start-up in the smallest SOT583 footprint - making it optimal for space-constrained, battery-aware, and EMC-sensitive industrial designs.
Availability
TPS563300DRLR is available at Aetrix Electronics and suitable for industrial PC power, smart speaker core rails, building automation controllers, and enterprise projector auxiliary supplies requiring stable component supply and long-term manufacturability.
Supply support for TPS563300DRLR 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 DC-DC conversion.
The TPS563300DRLR belongs to TI's D-CAP2™-enhanced synchronous buck converter family, designed specifically for compact, high-efficiency point-of-load regulation in industrial, computing, and consumer electronics where small size, low IQ, and EMI robustness are mandatory.
FAQ
What is the maximum duty cycle supported by the TPS563300DRLR?
The TPS563300DRLR supports a maximum duty cycle of 98%, enabled by its 7-μs maximum on-time and 140-ns minimum off-time. This allows operation down to very low output voltages (e.g., 0.8 V) even with high input rails like 24 V, without requiring frequency foldback. The 98% capability is confirmed in the datasheet's Features section and Electrical Characteristics table under tON_MAX.
Does the TPS563300DRLR require external compensation components?
No, the TPS563300DRLR uses internally compensated fixed-frequency peak current mode control. Its optimized loop design eliminates the need for external Type-II or Type-III compensation networks across its full 0.8–22-V output range and 500-kHz switching frequency - reducing BOM count and simplifying layout. This is explicitly stated in both the Features and Detailed Description sections of the datasheet.
Can the TPS563300DRLR start up into a prebiased output?
Yes, the TPS563300DRLR supports safe monotonic start-up into prebiased outputs. Its control architecture prevents reverse current flow during startup, making it suitable for hot-swap and rail-sequencing applications. This feature is documented in Section 7.1 Overview and Section 8.2 Typical Application of the datasheet.
What is the purpose of the two NC pins on the TPS563300DRLR?
The TPS563300DRLR has two NC (No Connect) pins - Pin 1 and Pin 7 - which are reserved and must be left floating. They serve no internal function but improve noise immunity, thermal dissipation, and PCB layout flexibility by isolating sensitive analog (FB, EN) and power (VIN, SW, BST) nodes. This pin configuration is defined in Table 5-1 Pin Functions and Figure 5-1 of the datasheet.
How does the TPS563300DRLR achieve low EMI performance?
The TPS563300DRLR achieves low EMI through three integrated features: (1) frequency spread spectrum (±6% modulation), (2) optimized SOT583 pinout with dedicated GND and short SW/BST paths, and (3) controlled slew-rate switching via internal gate drivers. These are detailed in the Features section and Section 7.3.4 of the datasheet, and validated in typical EMI test reports referenced in TI's application notes.
TPS563300DRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-583
- 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):
- 3.8V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 3A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
TPS563300DRLR FAQ
1.How can I place an order for TPS563300DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563300DRLR 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 TPS563300DRLR reliable?
The price and inventory of TPS563300DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563300DRLR is usually 5 days.
3.What payment methods are accepted for TPS563300DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563300DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563300DRLR?
TPS563300DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563300DRLR 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 TPS563300DRLR?
For technical support, including TPS563300DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563300DRLR requirements.
6.How does Aetrix verify that TPS563300DRLR is sourced from the original manufacturer or authorized distributors?
All TPS563300DRLR 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 TPS563300DRLR meets industry standards.
7.What is the process for return or replacement of TPS563300DRLR?
All TPS563300DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS563300DRLR, 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 TPS563300DRLR part is unused and in its original packaging.
Return procedure for TPS563300DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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