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Texas Instruments TPS562246DRLR
- Part No.:
- TPS562246DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TPS562246DRLR.pdf
- Description:
- IC REG BUCK ADJ 2A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:3,857
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Product details
Overview
TPS562246DRLR from Texas Instruments is a 2A synchronous buck converter in SOT563 package, operating from 4.2V to 17V input and delivering 0.6V–7V output with ±1.5% reference accuracy. It integrates 100mΩ/55mΩ FETs, uses D-CAP3™ control for fast transient response, and supports FCCM mode for fixed-frequency operation-ideal for compact power rails in Wi-Fi access points and small business routers.
For engineers reviewing the TPS562246DRLR datasheet, TPS562246DRLR pinout, TPS562246DRLR application, or TPS562246DRLR equivalent, this page delivers verified electrical specs, validated thermal performance (RθJA = 147.4°C/W), confirmed FCCM-mode behavior at light load, and precise pin-function mapping per TI SLUSFG8A Rev. MAY 2026.
Technical Context
The TPS562246DRLR implements D-CAP3™ adaptive on-time control with internal ramp compensation, enabling stable regulation without external compensation components-even with ultra-low-ESR ceramic or polymer output capacitors. Its FCCM mode maintains 1280kHz switching frequency across full 0–2A load range, minimizing output voltage ripple while supporting prebiased start-up.
Protection architecture includes cycle-by-cycle overcurrent limit (2.0–3.6A valley threshold), non-latching UVLO (3.6–4.0V wake-up, 400mV hysteresis), hiccup-mode UVP (60mV trip), and thermal shutdown at 155°C with 20°C hysteresis-ensuring robust operation in industrial ambient conditions (–40°C to 125°C junction).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 17V - supports wide-input industrial and telecom supplies without external LDO pre-regulation. |
| Output Current | 2A continuous - sufficient for powering dual-core SoCs or multi-channel PHYs in networking equipment. |
| Switching Frequency | 1280kHz - enables use of sub-2.2µH inductors and reduces output filter size for space-constrained PCBs. |
| Reference Voltage | 0.6V ±1.5% - sets tight output tolerance; enables 1.05V, 1.2V, 3.3V, or 5V outputs via standard resistor dividers. |
| FET RDS(on) | 100mΩ (HS) / 55mΩ (LS) - minimizes conduction loss at 2A, supporting >90% efficiency at mid-load with 12VIN/3.3VOUT. |
| Soft-Start Time | 1.4ms internal - prevents inrush current during power-up; eliminates need for external soft-start circuitry. |
| Junction Temperature | –40°C to 125°C - qualified for extended industrial temperature operation without derating at full 2A load. |
Pinout & Package
SOT563 (DRL) package: 6-pin, 1.6mm × 1.6mm footprint with 0.5mm pitch; thermally enhanced bottom-side pad (GND-connected) for improved heat dissipation in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply rail | Accepts 4.2–17V; requires local 10µF ceramic bypass capacitor near pin for stability and EMI suppression. |
| SW (Pin 2) | Switch node | Connects between integrated HS and LS FETs; routes to external inductor; critical for layout low-inductance loop. |
| GND (Pin 3) | Power and signal ground | Common return for LS FET source and control circuitry; FB trace must connect here at single-point star ground. |
| BST (Pin 4) | Bootstrap supply | Requires 0.1µF ceramic capacitor to SW; enables HS FET gate drive above VIN for full enhancement. |
| EN (Pin 5) | Enable control | Active-high logic input (1.2V typical turn-on); internal 1µA pulldown ensures default OFF state. |
| FB (Pin 6) | Feedback input | Monitors output via resistor divider; 0.6V reference sets VOUT = 0.6 × (1 + RFBT/RFBB). |
Key Features
| Feature | Design Value |
|---|---|
| FCCM mode operation | Maintains constant 1280kHz switching across 0–2A load-reducing output ripple and simplifying EMI filtering vs. variable-frequency alternatives. |
| D-CAP3™ control | Enables direct use of ceramic or polymer output capacitors without external compensation, cutting BOM count and design time. |
| Prebiased start-up support | Allows safe startup into powered output rails (e.g., hot-swap systems), preventing reverse current flow through the LS FET. |
| Large duty-cycle capability | Supports up to 95% duty cycle with automatic frequency reduction below 7VIN, enabling high-VOUT/low-VIN applications like 5V→3.3V conversion. |
| Integrated protection suite | Includes non-latching UVLO, hiccup-mode UVP, cycle-by-cycle OCL, and thermal shutdown-eliminating need for discrete protection ICs. |
Applications
| WLAN/Wi-Fi Access Point | Small Business Router |
|---|---|
Use Scenario: Powering dual-band Wi-Fi 6/6E baseband SoC and RF front-end modules requiring clean, low-noise 1.05V and 3.3V rails. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator converting 12V system bus to 1.05V core and 3.3V I/O supplies. Use Value: FCCM mode ensures consistent 1280kHz switching-minimizing beat frequencies with WLAN RF carriers and easing conducted EMI compliance. |
Use Scenario: Supplying CPU, switch ASIC, and USB 3.0 PHY in compact router platforms with strict board area constraints. IC Role / Device Role / Timing Role: Compact 2A buck converter replacing discrete controller+MOSFET solutions in 1.2V and 1.8V POL applications. Use Value: SOT563 footprint (1.6mm × 1.6mm) and integrated FETs reduce total solution size by >40% vs. comparable controllers. |
| Electricity Meter | STB/DVR |
Use Scenario: Generating isolated 3.3V and 5V rails for metrology ADC, secure MCU, and communication interfaces (PLC, NB-IoT) in smart meters. IC Role / Device Role / Timing Role: Main DC/DC regulator handling wide-input utility-supplied 9–17V AC/DC-derived bus. Use Value: –40°C to 125°C junction rating and 147.4°C/W RθJA enable reliable operation inside sealed meter enclosures without forced airflow. |
Use Scenario: Powering video decoder SoC, HDMI transmitter, and memory subsystem in set-top boxes with thermal budget limitations. IC Role / Device Role / Timing Role: High-efficiency 2A buck supplying 1.2V core and 1.8V memory rails from 12V intermediate bus. Use Value: D-CAP3™ control provides <10µs load transient response-preventing brownout during burst video decode operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS562246BDRBR | Identical FCCM mode and specs, but rated for 4.5–17V input (vs. 4.2–17V); EN threshold hysteresis reduced to 90mV (vs. 200mV). | Preferred where input supply has tighter lower bound (e.g., regulated 5V bus); less tolerant of brownout dips near 4.2V. | Select TPS562246BDRBR only if system VIN never falls below 4.5V; otherwise TPS562246DRLR offers wider margin. |
| MP2315GJ-Z | 2A buck with 4.5–18V input, 1.2MHz fixed frequency, but uses voltage-mode control and requires external compensation. | Lacks D-CAP3™ simplicity; needs additional RC network for stability with ceramic caps; no prebias start-up support. | Choose MP2315GJ-Z only when cost is primary driver and design team has experience tuning voltage-mode loops. |
Compared with TPS562246BDRBR, the TPS562246DRLR provides broader input range and higher EN hysteresis for noise immunity; versus MP2315GJ-Z, it delivers faster transient response, smaller solution size, and simpler design-justifying its use in time-sensitive, space-constrained applications.
Availability
TPS562246DRLR is available at Aetrix Electronics and suitable for WLAN access points, small business routers, and electricity meters requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for TPS562246DRLR 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.
The TPS56224xx family was designed specifically for space-constrained, high-performance POL applications in networking, industrial, and consumer electronics-emphasizing integration, ease of use, and thermal resilience.
FAQ
What is the recommended input capacitor configuration for TPS562246DRLR?
TI specifies two 10µF X5R/X7R ceramic capacitors (CIN1 and CIN2) placed as close as possible to VIN and GND pins. This dual-capacitor approach reduces impedance across 100kHz–10MHz, suppresses high-frequency switching noise, and improves stability under dynamic load steps. The TPS562246DRLR datasheet (SLUSFG8A, Section 7.2.2.3) confirms this configuration achieves optimal EMI performance and transient response.
Does TPS562246DRLR support output voltages below 0.6V?
No. The TPS562246DRLR has a fixed 0.6V internal reference voltage with ±1.5% accuracy across –40°C to 125°C. Output voltage is calculated as VOUT = 0.6V × (1 + RFBT/RFBB), making 0.6V the absolute minimum achievable value. Attempting to set lower outputs violates the feedback architecture and results in regulation failure. This limitation is explicitly defined in Section 5.5 of the TPS562246DRLR datasheet.
How does the TPS562246DRLR handle short-circuit conditions?
Under output short-circuit, the TPS562246DRLR activates hiccup-mode protection: after detecting undervoltage (UVP trip at 60mV), it disables switching for 13ms, then attempts restart. If the fault persists, it repeats the 13ms off / 1.5ms on cycle indefinitely. This limits average power dissipation and prevents thermal runaway-verified in TI's thermal characterization (Section 5.4) and protection timing specs (Section 5.5).
Can TPS562246DRLR be used with 1µH inductors?
Yes-TI's reference design (Figure 7-1, SLUSFG8A) uses a 1.2µH inductor for 1.05V/2A output, and efficiency curves (Figure 5-10) confirm stable operation down to 1µH. However, inductance must exceed the minimum value calculated using Equation 2 in Section 6.3.5 to avoid triggering NOC protection in FCCM mode. For 12VIN/3.3VOUT, 1µH meets this requirement with margin.
What is the maximum achievable output voltage with TPS562246DRLR?
The TPS562246DRLR supports output voltages up to 7V, as specified in the device description (Section 3) and electrical characteristics table (Section 5.5). This upper limit is enforced by internal circuitry and thermal constraints-not just the feedback divider. Exceeding 7V risks violating absolute maximum ratings for FB pin voltage (6V) and may cause regulation instability or damage, per Section 5.1 of the datasheet.
TPS562246DRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TPS56224x
- 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:
- 2A
- Frequency - Switching:
- 1.28MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
TPS562246DRLR FAQ
1.How can I place an order for TPS562246DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS562246DRLR 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 TPS562246DRLR reliable?
The price and inventory of TPS562246DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS562246DRLR is usually 5 days.
3.What payment methods are accepted for TPS562246DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS562246DRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS562246DRLR?
TPS562246DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS562246DRLR 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 TPS562246DRLR?
For technical support, including TPS562246DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS562246DRLR requirements.
6.How does Aetrix verify that TPS562246DRLR is sourced from the original manufacturer or authorized distributors?
All TPS562246DRLR 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 TPS562246DRLR meets industry standards.
7.What is the process for return or replacement of TPS562246DRLR?
All TPS562246DRLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS562246DRLR, 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 TPS562246DRLR part is unused and in its original packaging.
Return procedure for TPS562246DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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