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Texas Instruments TPS562231DRLR
- Part No.:
- TPS562231DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TPS562231DRLR.pdf
- Description:
- IC REG BUCK ADJ 2A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:12,147
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Product details
Overview
TPS562231DRLR from Texas Instruments is a 2-A synchronous step-down buck converter in SOT563 package, featuring D-CAP3™ mode control, 4.5-V to 17-V input range, 0.6-V to 7-V adjustable output, and 850-kHz switching frequency. It integrates 95-mΩ high-side and 55-mΩ low-side MOSFETs and supports startup from pre-biased outputs for embedded power rail applications.
For engineers reviewing the TPS562231DRLR datasheet, TPS562231DRLR pinout, TPS562231DRLR application, or TPS562231DRLR equivalent, key selection considerations include light-load efficiency in pulse skip mode, ±2% feedback accuracy at 25°C, hiccup-mode overcurrent protection, thermal shutdown at 160°C, and compatibility with low-ESR ceramic output capacitors without external compensation.
Technical Context
The TPS562231DRLR employs adaptive on-time D-CAP3™ control architecture that combines internal ramp injection with pseudo-fixed-frequency operation across 4.5–17 V input, enabling stable regulation with ceramic or polymer output capacitors. Its valley-current sensing enables cycle-by-cycle overcurrent limiting and hiccup-mode fault recovery.
Functional modes include continuous conduction (CCM) up to 2 A, discontinuous conduction (DCM), and Advanced Eco-mode™ pulse skip mode (PSM) for high light-load efficiency. The device features precision enable with 1.13-V typical threshold, 2-µA shutdown current, and soft-start time of 1.5 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 17 V - supports standard 12-V industrial and networking rails with 70% max duty cycle constraint. |
| Output Current | 2 A continuous - delivered in CCM with integrated 95-mΩ/55-mΩ FETs and thermal derating per θJA = 135.8°C/W. |
| Switching Frequency | 850 kHz - fixed nominal frequency in CCM; reduces external filter size while maintaining EMI manageability. |
| Feedback Accuracy | ±2% at 25°C - ensures tight output regulation across load and line variations in precision point-of-load designs. |
| Shutdown Current | <2 µA typical - enables ultra-low-power standby in battery-backed or always-on systems. |
| Protection Features | Cycle-by-cycle OCL, hiccup-mode OCP, non-latch UVP/TSD - provides robust fault handling without latch-up or manual reset. |
| Package | SOT563 (DRL), 1.6 mm × 1.6 mm - compact footprint optimized for space-constrained embedded PCB layouts. |
Pinout & Package
TPS562231DRLR uses a 6-pin SOT563 (DRL) package with exposed thermal pad (not electrically connected). Pin layout is optimized for minimal SW node loop area and thermal performance in high-density DC/DC layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Connects to 4.5–17 V source; requires local 10-µF ceramic + 0.1-µF HF decoupling; trace must be wide and short. |
| SW | Switch node | Drain-source connection between internal HS and LS FETs; critical high-di/dt node requiring minimized loop area. |
| GND | Power ground | Internal connection to LS FET source; must tie directly to system ground plane with multiple vias near CIN/COUT. |
| FB | Feedback input | High-impedance (±100 nA) input monitoring output via resistor divider; Kelvin connection recommended for accuracy. |
| EN | Enable control | Logic-level input (1.13 V typ. threshold); supports VIN tie-off or resistor-divider UVLO programming; must not float. |
| BST | Bootstrap supply | Supplies gate drive for HS FET; requires 0.1-µF ceramic capacitor to SW; voltage rating ≥10 V. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control mode | Enables stable operation with zero-ESR ceramic capacitors and eliminates need for external compensation network. |
| Pulse skip mode (PSM) | Maintains >80% efficiency at 10-mA load, extending battery life in always-on IoT and metering applications. |
| Pre-biased output startup | Allows safe ramp-up when VOUT is already charged, preventing reverse current flow in multi-rail or hot-swap systems. |
| Hiccup-mode overcurrent protection | Shuts down for 24 ms after UVP detection, limiting average power dissipation during sustained short-circuit faults. |
| Precision enable with UVLO | EN threshold of 1.13 V (typ.) enables programmable input rail sequencing and brownout rejection via resistor divider. |
Applications
| Standard 12-V Rail Supplies | Digital TV Power Supply |
|---|---|
Use Scenario: Regulating 12-V main rail to 3.3-V or 1.8-V logic supplies in set-top boxes and media hubs. IC Role / Device Role / Timing Role: Primary point-of-load buck regulator delivering 2-A peak current with fast transient response to CPU/GPU load steps. Use Value: D-CAP3™ control achieves <±5% output deviation under 2-A load transients, reducing required output capacitance by 30% vs. voltage-mode controllers. |
Use Scenario: Generating stable 1.05-V core voltage for SoC in digital television receivers with variable ambient temperature. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter operating across –40°C to 125°C junction range in sealed enclosures. Use Value: 135.8°C/W θJA and hiccup-mode OCP prevent thermal runaway during extended video decoding workloads. |
| Networking Home Terminal | E-Meter |
Use Scenario: Powering Ethernet PHY, switch controller, and memory in residential gateways with bursty traffic patterns. IC Role / Device Role / Timing Role: Efficient intermediate rail converter supporting dynamic load changes from idle to full packet forwarding. Use Value: Pulse skip mode sustains >85% efficiency at 10-mA standby current, meeting Energy Star Level VI requirements. |
Use Scenario: Providing isolated 3.3-V microcontroller supply in utility-grade smart meters with 10-year field lifetime. IC Role / Device Role / Timing Role: High-reliability DC/DC stage with non-latch UVP/TSD and ±2% FB accuracy for metrology-grade stability. Use Value: 2-µA shutdown current and pre-biased startup support battery backup operation during AC mains failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS563231DRLR | 3-A rated, identical pinout and feature set; higher RDS(on) (70 mΩ/35 mΩ) and same 850-kHz fsw. | Required where peak load exceeds 2 A but board space and BOM reuse are prioritized. | Select TPS563231DRLR only if 3-A capability is needed; shares layout, feedback network, and thermal design with TPS562231DRLR. |
| MP2315DJ-LF-Z | 2-A, 4.5–28 V input, 500-kHz fsw, different pinout (SOT563 but non-pin-compatible), no pre-bias startup. | Suitable for wider input ranges but lacks D-CAP3™ transient performance and hiccup-mode OCP. | Choose MP2315DJ-LF-Z only when input exceeds 17 V; expect redesign of feedback divider, loop compensation, and layout due to differing pin functions. |
Compared with TPS562231DRLR, TPS563231DRLR offers direct pin-to-pin upgrade path for higher current, while MP2315DJ-LF-Z trades transient response and protection sophistication for extended input voltage range-requiring full schematic and layout revalidation.
Availability
TPS562231DRLR is available at Aetrix Electronics and suitable for embedded systems, digital TV power supplies, and networking home terminals requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS562231DRLR 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 company specializing in analog, embedded processing, and power management ICs, with leadership in high-efficiency DC/DC conversion and automotive-grade reliability.
The TPS562231DRLR belongs to TI's D-CAP3™ family of easy-to-use synchronous buck converters, designed specifically for space-constrained, cost-sensitive embedded applications needing minimal external components and robust light-load efficiency.
FAQ
What is the maximum output current capability of the TPS562231DRLR?
The TPS562231DRLR delivers up to 2 A continuous output current in continuous conduction mode (CCM) at ambient temperatures ≤85°C with proper PCB thermal design. Derating applies above 85°C ambient per its θJA = 135.8°C/W specification; at 125°C junction, usable current drops to approximately 1.3 A with 20°C rise allowed.
Does the TPS562231DRLR support startup into a pre-charged output?
Yes, the TPS562231DRLR supports pre-biased output startup: when the FB voltage exceeds the internal reference at power-on, the device delays switching until the reference ramps above VFB, preventing reverse current flow and ensuring monotonic output rise. This behavior is confirmed in Section 7.3.2 of the official datasheet.
What capacitor types are recommended for the TPS562231DRLR output stage?
The TPS562231DRLR is optimized for low-ESR ceramic capacitors (e.g., X5R/X7R 22–68 µF) or specialty polymer types. Its D-CAP3™ control eliminates need for ESR-based compensation, unlike traditional voltage-mode controllers. Avoid high-ESR electrolytics; recommended values are 20–68 µF total with ≤5 mΩ combined ESR per TI's Table 2.
How does the TPS562231DRLR handle overcurrent conditions?
The TPS562231DRLR implements valley-current sensing on the low-side FET to enforce cycle-by-cycle current limiting at 2.3–3.3 A (depending on temperature). If overload persists, it triggers hiccup-mode protection: shutdown for ~24 ms, then automatic restart attempt. This prevents thermal damage while allowing self-recovery upon fault removal.
Is the TPS562231DRLR pin-compatible with other devices in the same family?
Yes, the TPS562231DRLR is pin-to-pin compatible with the TPS563231DRLR (3-A variant) in the same SOT563 package. Both share identical pinout, EN/FB/BST/SW/VIN/GND assignments and functional block diagram. No PCB change is required when upgrading from TPS562231DRLR to TPS563231DRLR for higher current needs.
TPS562231DRLR 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:
- 2A
- Frequency - Switching:
- 850kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
TPS562231DRLR FAQ
1.How can I place an order for TPS562231DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS562231DRLR 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 TPS562231DRLR reliable?
The price and inventory of TPS562231DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS562231DRLR is usually 5 days.
3.What payment methods are accepted for TPS562231DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS562231DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS562231DRLR?
TPS562231DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS562231DRLR 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 TPS562231DRLR?
For technical support, including TPS562231DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS562231DRLR requirements.
6.How does Aetrix verify that TPS562231DRLR is sourced from the original manufacturer or authorized distributors?
All TPS562231DRLR 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 TPS562231DRLR meets industry standards.
7.What is the process for return or replacement of TPS562231DRLR?
All TPS562231DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS562231DRLR, 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 TPS562231DRLR part is unused and in its original packaging.
Return procedure for TPS562231DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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