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Texas Instruments TPS563240DDCR
- Part No.:
- TPS563240DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS563240DDCR.pdf
- Description:
- IC REG BUCK ADJ 3A SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,523
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Product details
Overview
TPS563240DDCR from Texas Instruments is a 3-A synchronous step-down DC-DC voltage regulator in a 6-pin SOT-23 (DDC) package, featuring D-CAP3™ adaptive on-time control, 1.4-MHz fixed-frequency operation, and integrated 70-mΩ high-side / 30-mΩ low-side MOSFETs. It delivers stable 0.6–7-V output across 4.5–17-V input for power rails in compact consumer and networking equipment.
For engineers reviewing the TPS563240DDCR datasheet, TPS563240DDCR pinout, TPS563240DDCR application, or TPS563240DDCR equivalent, key selection criteria include its light-load pulse-skip mode maintaining >25-kHz switching frequency, 1% VFB accuracy at 25°C, cycle-by-cycle overcurrent protection, and pre-biased soft-start capability - all critical for reliable point-of-load regulation in space-constrained designs.
Technical Context
The TPS563240DDCR implements D-CAP3™ control architecture combining adaptive on-time PWM with internal ripple injection, enabling stable operation with ultra-low-ESR ceramic or polymer output capacitors without external compensation. Its one-shot timer sets on-time proportional to VIN and inversely proportional to VOUT, sustaining quasi-fixed 1.4-MHz switching across input voltage variations.
It supports three functional modes: continuous conduction mode (CCM) above ~0.5 A load, Eco-mode pulse-skipping below that threshold, and standby shutdown via EN pin. Protection includes hiccup-mode overcurrent (5.5–7.1 A high-side, 3.1–4.7 A low-side), non-latching UVP (65% of VOUT), thermal shutdown at 160°C, and UVLO with 4.4-V turn-on/3.8-V turn-off hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3 A continuous, 3.5 A peak transient - supports demanding SoC core rails and FPGA I/O banks. |
| Input Voltage Range | 4.5 V to 17 V - compatible with 5-V, 12-V, and 15-V intermediate bus architectures. |
| Output Voltage Range | 0.6 V to 7 V - programmable via external resistor divider for precise system-level rail generation. |
| Switching Frequency | 1.4 MHz nominal - enables compact LC filter design with ≤2.2-µH inductors and ≤22-µF ceramics. |
| Feedback Accuracy | ±1% at 25°C (594–606 mV) - ensures tight output regulation under thermal and load variation. |
| Shutdown Current | <10 µA - minimizes battery drain in always-on subsystems and IoT edge nodes. |
| Soft-Start Time | 1.7 ms fixed internal ramp - prevents inrush current and output overshoot during power-up. |
Pinout & Package
TPS563240DDCR is housed in a thermally enhanced 6-pin SOT-23 (DDC) package measuring 1.6 mm × 2.9 mm, optimized for high-power density and PCB area efficiency in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Power and signal ground reference | Common return path for low-side FET source and controller circuitry; must be star-connected to VFB for noise immunity. |
| SW | Switch node | Connection between high- and low-side MOSFETs; requires low-inductance layout to minimize EMI and voltage spikes. |
| VIN | Main input supply | Drain terminal of high-side FET; must be decoupled with ≥10-µF ceramic capacitor close to pin. |
| VFB | Feedback input | Senses output voltage via resistor divider; 600-mV reference enables accurate VOUT programming (e.g., 3.3 V = R1/R2 = 45.3k/10k). |
| EN | Enable control | Active-high logic input (1.27–1.34 V threshold); pulled high internally via 1-MΩ resistor; supports sequencing and power management. |
| VBST | Bootstrap supply | Provides gate drive voltage for high-side FET; requires 0.1-µF ceramic capacitor between VBST and SW pins. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ adaptive on-time control | Enables stable regulation with zero-ESR ceramic capacitors and eliminates external compensation components. |
| Pulse-skip Eco-mode | Maintains >25-kHz minimum switching frequency under light load, avoiding audible noise while preserving >85% efficiency at 10-mA output. |
| Integrated power FETs | 70-mΩ high-side + 30-mΩ low-side MOSFETs reduce BOM count and thermal footprint versus discrete solutions. |
| Pre-biased soft-start | Allows safe startup into pre-charged output rails without reverse current flow or output collapse. |
| Hiccup-mode OCP | Shuts down for 25 ms after overcurrent detection, then auto-restarts - protects against sustained short-circuit faults. |
Applications
| TV & Set-Top Boxes | Broadband Modems |
|---|---|
Use Scenario: Powering SoC cores, DDR memory, and video processing units in compact entertainment devices. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 1.05 V/1.2 V/3.3 V rails with fast transient response to dynamic CPU/GPU loads. Use Value: D-CAP3™ control reduces output capacitance by up to 40% versus voltage-mode controllers, saving board space and cost. |
Use Scenario: Generating stable 5-V and 3.3-V supplies for DSL/Cable/Wi-Fi chipsets and PHY interfaces. IC Role / Device Role / Timing Role: Secondary DC-DC converter stepping down 12-V adapter input to isolated low-noise digital rails. Use Value: 1.4-MHz switching allows use of small 1.5-µH inductors and avoids interference with RF front-end bands. |
| Wireless Access Points | Surveillance Cameras |
Use Scenario: Supplying 1.8-V and 2.5-V rails to dual-band Wi-Fi 6 transceivers and Ethernet PHYs in fanless enclosures. IC Role / Device Role / Timing Role: High-efficiency buck regulator operating in Eco-mode during idle periods to extend thermal headroom. Use Value: <10-µA shutdown current enables remote firmware updates without battery depletion in PoE-powered units. |
Use Scenario: Powering image sensors, ISP processors, and IR LED drivers in outdoor IP cameras with wide ambient temperature range. IC Role / Device Role / Timing Role: Robust 3-A regulator supporting cold-start (-40°C) and thermal shutdown recovery in sealed housings. Use Value: Non-latching UVP and TSD protections prevent permanent lockup during brown-out or overheating events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563201DDCR | Same D-CAP3™ control, 3-A rating, but 4.5–17-V input and 0.6–7-V output; differs only in enable threshold (1.25 V vs 1.31 V typical) and slightly lower light-load efficiency. | Identical pinout and footprint; suitable for drop-in replacement where tighter EN tolerance is not required. | Select TPS563201DDCR when sourcing flexibility is prioritized and minor EN threshold variance is acceptable in system-level sequencing. |
| MP2332DJ-LF-Z | Monolithic 3-A buck with 4.5–28-V input, 0.8–15-V output, and 500-kHz switching; uses constant-on-time control, lacks pre-biased soft-start and hiccup OCP. | Requires external compensation and larger LC filter; not pin-compatible; better suited for higher-input industrial rails than consumer 12-V systems. | Choose MP2332DJ-LF-Z only if input exceeds 17 V or if lower switching frequency is preferred for EMI filtering simplicity. |
Compared with TPS563240DDCR, TPS563201DDCR offers identical functionality with marginal EN threshold variance, while MP2332DJ-LF-Z trades pin compatibility and advanced protection features for wider input range - making the former a true alternative and the latter a functional substitute requiring redesign.
Availability
TPS563240DDCR is available at Aetrix Electronics and suitable for TV power supplies, broadband modem subsystems, and wireless access point designs requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS563240DDCR 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 TPS563240DDCR belongs to TI's D-CAP3™ family of easy-to-use synchronous buck regulators, designed specifically for space-constrained consumer, networking, and industrial applications demanding minimal external components and robust light-load efficiency.
FAQ
What is the maximum output current capability of the TPS563240DDCR?
The TPS563240DDCR delivers 3 A continuous output current and supports up to 3.5 A peak transient current. This rating is validated across the full –40°C to 125°C junction temperature range with proper PCB thermal design, including adequate copper pour and airflow. The device employs cycle-by-cycle overcurrent limiting and hiccup-mode protection to sustain this capability safely under overload conditions.
Does the TPS563240DDCR support startup into a pre-biased output voltage?
Yes, the TPS563240DDCR supports pre-biased soft-start. When the EN pin is asserted high and the feedback voltage (VFB) is already above the 600-mV reference, the internal soft-start ramp begins only after VFB drops below the reference level. This prevents reverse current flow through the low-side FET and ensures controlled, monotonic output voltage rise - a critical feature for hot-swap and multi-rail sequencing applications.
What package type and dimensions does the TPS563240DDCR use?
The TPS563240DDCR is packaged in a 6-pin SOT-23 variant designated DDC, with nominal body dimensions of 1.60 mm × 2.90 mm and 0.95-mm height. It features an exposed thermal pad on the bottom surface for enhanced heat dissipation and is RoHS-compliant and lead-free. The pinout is GND–SW–VIN–VFB–EN–VBST (top view), matching industry-standard SOT-23-6 footprints with minor pad geometry adjustments.
How does the TPS563240DDCR maintain efficiency at light load?
The TPS563240DDCR uses pulse-skip Eco-mode to maintain high efficiency at light load. As output current drops below ~0.5 A, it transitions from continuous conduction mode (CCM) to discontinuous operation, skipping switching cycles while keeping minimum frequency above 25 kHz. This avoids audible noise and preserves >85% efficiency at 10-mA load - confirmed by TI's typical efficiency curves across 5-V, 9-V, 12-V, and 15-V inputs.
What protection features are integrated into the TPS563240DDCR?
The TPS563240DDCR integrates cycle-by-cycle overcurrent limit (5.5–7.1 A high-side, 3.1–4.7 A low-side), hiccup-mode fault recovery, non-latching undervoltage protection (UVP triggers at 65% of VOUT), thermal shutdown at 160°C with 25°C hysteresis, and UVLO with 4.4-V turn-on/3.8-V turn-off thresholds. All protections are fully autonomous and require no external components to function.
TPS563240DDCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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:
- 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS563240DDCR FAQ
1.How can I place an order for TPS563240DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS563240DDCR 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 TPS563240DDCR reliable?
The price and inventory of TPS563240DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS563240DDCR is usually 5 days.
3.What payment methods are accepted for TPS563240DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS563240DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS563240DDCR?
TPS563240DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS563240DDCR 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 TPS563240DDCR?
For technical support, including TPS563240DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS563240DDCR requirements.
6.How does Aetrix verify that TPS563240DDCR is sourced from the original manufacturer or authorized distributors?
All TPS563240DDCR 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 TPS563240DDCR meets industry standards.
7.What is the process for return or replacement of TPS563240DDCR?
All TPS563240DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS563240DDCR, 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 TPS563240DDCR part is unused and in its original packaging.
Return procedure for TPS563240DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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