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Texas Instruments TPS62301DRCR
- Part No.:
- TPS62301DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62301DRCR.pdf
- Description:
- IC REG BUCK 1.5V 500MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,976
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Product details
Overview
TPS62301DRCR from Texas Instruments is a 500-mA, 3-MHz synchronous step-down DC-DC converter in a 10-pin QFN (3 × 3 mm) package, delivering fixed 1.5 V output from 2.7–6 V input. It features up to 93% efficiency, 86-µA quiescent current in power-save mode, and 35-ns minimum on-time for ultra-low dropout operation. Designed for space-constrained portable electronics, it powers core logic in smartphones and PDAs using single-cell Li-Ion or 3-cell NiMH/NiCd batteries.
For engineers reviewing the TPS62301DRCR datasheet, TPS62301DRCR pinout, TPS62301DRCR application, or TPS62301DRCR equivalent, key selection criteria include its fixed 1.5 V output, QFN-10 thermal performance (RθJA = 49°C/W), PFM/PWM auto-mode transition, 2.4 V undervoltage lockout, and compatibility with 1 µH inductors and 4.7 µF ceramic output capacitors.
Technical Context
The TPS62301DRCR employs voltage-mode control with input voltage feed-forward for fast load/line transient response and supports both automatic PFM/PWM mode switching and forced PWM via the MODE/SYNC pin. Its dual MOSFET power stage integrates P-channel (typ. 420 mΩ at 3.6 V) and N-channel (typ. 330 mΩ at 3.6 V) switches with independent current limits (780 mA P-MOS, 720 mA N-MOS).
It operates at a fixed 3-MHz switching frequency (2.65–3.35 MHz range), synchronizable to an external clock on the MODE/SYNC pin, and includes integrated soft-start, thermal shutdown (150°C), and active power-down sequencing only in TPS6232x variants - not implemented in TPS62301DRCR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2% over –40°C to 85°C; enables direct powering of 1.5 V I/O or core rails without external resistors. |
| Input Voltage Range | 2.7 V to 6 V; supports single-cell Li-Ion (2.7–4.2 V) and 3-cell NiMH/NiCd (3.6–4.5 V) battery inputs. |
| Max Output Current | 500 mA continuous; sufficient for ARM Cortex-M cores, baseband processors, and RF transceivers in handheld devices. |
| Switching Frequency | 3 MHz (2.65–3.35 MHz); allows use of sub-1-mm-height 1 µH inductors and reduces EMI filtering burden. |
| Quiescent Current | 86 µA in PFM mode; extends battery life in standby/sleep states of always-on mobile peripherals. |
| UVLO Threshold | 2.4 V (min 2.40 V, max 2.55 V); prevents erratic operation during battery sag and ensures clean startup above safe voltage. |
| Efficiency Peak | Up to 93% at 3.6 VIN/1.5 VOUT; minimizes thermal rise in sealed enclosures like smartphones and Bluetooth headsets. |
Pinout & Package
TPS62301DRCR is housed in a thermally enhanced 10-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed PowerPAD™ connected internally to PGND. The package supports reflow soldering and achieves RθJA = 49°C/W on low-K PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Connects directly to input bypass capacitor; supplies power stage; rated –0.3 V to 7 V absolute max. |
| EN | Enable control input | Pull high to enable; pull low (<0.4 V) for shutdown (<1 µA ISD); must not float. |
| MODE/SYNC | Mode selection & sync input | GND = auto PFM/PWM; VIN = forced PWM; external 3-MHz clock sync enabled when pulled high. |
| VOUT | Output feedback sense | Connected to converter output node; provides feedback path for regulation loop stability. |
| PGND | Power ground return | High-current return path for SW node; tied to PowerPAD™ for thermal conduction. |
| SW | Switch node | Drain connection of internal P/N-MOSFETs; connects to inductor; requires tight layout to minimize ringing. |
| AVIN | Analog supply input | Dedicated analog rail for bias circuitry; decouple separately near IC for noise immunity. |
| AGND | Analog ground | Reference for FB/ADJ/EN circuits; connect to PGND via short trace or PowerPAD™ under IC. |
| FB | Feedback input | Not connected on fixed-output TPS62301DRCR; leave unconnected per datasheet guidance. |
| ADJ | Adjust voltage input | Not connected on fixed-output TPS62301DRCR; must be left unconnected (not tied to GND or VOUT). |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables use of miniature 0.9–2.2 µH chip inductors and reduces output capacitor size vs. 500-kHz converters. |
| Auto PFM/PWM mode transition | Maintains >85% efficiency from 1 mA to 500 mA load, eliminating need for external mode control logic. |
| 35-ns minimum on-time | Supports high step-down ratios (e.g., 5.4 V → 1.5 V at 3 MHz) without pulse skipping instability. |
| 100% duty cycle capability | Allows dropout operation down to VIN – VOUT ≈ 100 mV, critical for Li-Ion end-of-discharge scenarios. |
| Integrated soft-start | Controls inrush current during startup; eliminates external RC networks and prevents input rail collapse. |
| Thermal shutdown with hysteresis | Shuts down at 150°C and restarts at 130°C, protecting PCB and adjacent components during sustained overload. |
Applications
| Smartphone Core Power | Bluetooth Audio SoC Supply |
|---|---|
Use Scenario: Powers ARM-based application processor core rail in compact smartphone designs with strict height constraints. IC Role / Device Role / Timing Role: Primary 1.5 V step-down regulator supplying CPU core voltage; operates in auto PFM/PWM mode across sleep-to-burst workloads. Use Value: 93% peak efficiency and 86 µA quiescent current extend talk time by >12% versus legacy 1.5-MHz buck converters in same footprint. |
Use Scenario: Supplies clean 1.5 V to Bluetooth 5.0 audio SoCs (e.g., CSR8675) in true wireless stereo earbuds. IC Role / Device Role / Timing Role: Dedicated LDO-replacement buck converter; MODE/SYNC held high for fixed-frequency PWM to suppress RF band noise. Use Value: 3-MHz operation shifts switching harmonics beyond 2.4 GHz ISM band, eliminating audible noise and Bluetooth packet loss. |
| USB-C Powered DSL Modem | Industrial Handheld Scanner |
Use Scenario: Generates 1.5 V for Ethernet PHY and microcontroller in USB-C–powered DSL modems with no AC adapter. IC Role / Device Role / Timing Role: Secondary buck stage downstream of USB-C PD input; handles wide input (3.6–6 V) from variable-source USB-C port. Use Value: 2.4 V UVLO ensures stable operation even during USB-C cable voltage drop; 500 mA output supports full-duplex 100BASE-TX. |
Use Scenario: Powers image sensor interface and FPGA configuration logic in ruggedized barcode scanners operating from 3.6 V NiMH packs. IC Role / Device Role / Timing Role: Main system rail regulator; uses QFN-10's low RθJA to sustain 500 mA in sealed plastic housing at 60°C ambient. Use Value: 49°C/W thermal resistance prevents derating below 450 mA at 60°C, enabling full-speed scanning without throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62302DRCR | Fixed 1.6 V output; identical pinout, specs, and package; differs only in output voltage setting. | Suitable where system requires 1.6 V core rail (e.g., certain TI OMAP variants) instead of 1.5 V. | Select TPS62302DRCR only if 1.6 V matches target SoC VDD requirement; no layout change needed. |
| TPS62313YZD | CSP-8 package (1.5 × 1.5 mm); 1.8 V fixed output; UVLO = 2.0 V; higher RθJA = 250°C/W. | Better suited for ultra-compact wearables where board area < 2.25 mm² is critical and thermal load is light (<150 mA). | Choose TPS62313YZD only for space-constrained designs accepting lower power capability and higher thermal resistance. |
Compared with TPS62301DRCR, TPS62302DRCR offers identical performance at 1.6 V-ideal for voltage-margin testing-while TPS62313YZD trades thermal robustness and current capacity for minimal footprint, making it viable only in low-power, area-limited applications.
Availability
TPS62301DRCR is available at Aetrix Electronics and suitable for smartphone power management, Bluetooth audio subsystems, and industrial handheld scanner designs requiring stable component supply, consistent QFN-10 sourcing, and long-term production continuity.
Supply support for TPS62301DRCR 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 for portable electronics.
The TPS623xx family was engineered specifically for battery-powered handheld devices demanding ultra-small solution size, high light-load efficiency, and seamless integration with Li-Ion and multi-cell alkaline/NiMH sources.
FAQ
What is the recommended input capacitor for TPS62301DRCR?
A 4.7 µF X5R/X7R ceramic capacitor placed within 3 mm of the VIN and AVIN pins is recommended per the datasheet. This value ensures stable operation across the 2.7–6 V input range and suppresses high-frequency switching noise injected into the input rail by the 3-MHz power stage of the TPS62301DRCR.
Can TPS62301DRCR be synchronized to an external clock?
Yes, the TPS62301DRCR supports synchronization via its MODE/SYNC pin. When driven with a 3-MHz square wave (20–80% duty cycle), the internal P-channel MOSFET turn-on aligns to the falling edge of the external signal, enabling precise frequency matching across multiple TPS62301DRCR units in multi-rail systems.
Is the FB pin used on TPS62301DRCR?
No-the FB pin is not connected internally on the fixed-output TPS62301DRCR and must remain unconnected on the PCB. Connecting it risks disrupting regulation or causing instability, as confirmed in the Terminal Functions table of the SLVS528E datasheet for TPS6230xDRC variants.
What is the thermal performance of TPS62301DRCR on a standard PCB?
On a low-K 1-layer JEDEC test board, the TPS62301DRCR exhibits RθJA = 49°C/W. At 500 mA output and 3.6 V input, this yields ~12°C temperature rise above ambient-well within safe operating limits and enabling full-rated current in most handheld layouts without heatsinking.
Does TPS62301DRCR support 100% duty cycle operation?
Yes, the TPS62301DRCR supports 100% duty cycle, allowing it to maintain regulation when input voltage drops close to output voltage (e.g., 1.6 VIN → 1.5 VOUT). This feature is essential for sustaining operation during deep battery discharge in Li-Ion systems, and is explicitly documented in the datasheet's Key Features section.
TPS62301DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62301DRCR FAQ
1.How can I place an order for TPS62301DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62301DRCR 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 TPS62301DRCR reliable?
The price and inventory of TPS62301DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62301DRCR is usually 5 days.
3.What payment methods are accepted for TPS62301DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62301DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62301DRCR?
TPS62301DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62301DRCR 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 TPS62301DRCR?
For technical support, including TPS62301DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62301DRCR requirements.
6.How does Aetrix verify that TPS62301DRCR is sourced from the original manufacturer or authorized distributors?
All TPS62301DRCR 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 TPS62301DRCR meets industry standards.
7.What is the process for return or replacement of TPS62301DRCR?
All TPS62301DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62301DRCR, 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 TPS62301DRCR part is unused and in its original packaging.
Return procedure for TPS62301DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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