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Texas Instruments TPS62750DSKR
- Part No.:
- TPS62750DSKR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
TPS62750DSKR.pdf
- Description:
- IC REG CONV USB 1OUT 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:4,945
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Product details
Overview
TPS62750DSKR from Texas Instruments is a synchronous step-down DC-DC converter optimized for USB-powered portable applications, delivering up to 1.3 A average input current with 2.25 MHz fixed-frequency PWM operation, programmable ±10% accurate input current limits (50–300 mA or 300–1300 mA), and stable 3.6 V output under load transients - used in USB wireless modems and handheld computers.
For engineers reviewing the TPS62750DSKR datasheet, TPS62750DSKR pinout, TPS62750DSKR application, or TPS62750DSKR equivalent, this device supports USB-compliant current limiting, hot-plug protection, reverse current blocking, soft-start for inrush control, and PFM/PWM auto-transition - critical for battery-powered USB peripherals requiring high efficiency (>90% at nominal conditions) and compact layout.
Technical Context
The TPS62750DSKR employs voltage-mode control with input-voltage feed-forward for fast line/load regulation and uses internal high-side (130–290 mΩ) and low-side (58–125 mΩ) MOSFETs in a synchronous buck topology. Its 2.25 MHz fixed switching frequency enables use of small 2.2 µH inductors and 10 µF ceramic capacitors.
It integrates programmable average input current limiting via external resistors on ISET_L and ISET_U pins, with H/L pin selection between low-range (50–300 mA) and high-range (300–1300 mA) limits. Shutdown disables all circuitry and activates an 85–300 Ω internal discharge path from SW to PGND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.9 V to 6.0 V - supports extended battery voltage range and direct USB 5 V operation. |
| Switching Frequency | 2.25 MHz (fixed) - enables compact solution size with small external L/C components. |
| Output Voltage | Adjustable 0.8 V to 0.85×VIN - set via external resistor divider; typical 3.6 V output shown in reference designs. |
| Input Current Limit Accuracy | ±10% - ensures reliable USB bus compliance without overcurrent risk. |
| Quiescent Current | 745–960 µA (TPS62750) - maintains high light-load efficiency in Power Save Mode (PFM). |
| Thermal Shutdown | 150°C (typical) with 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Package | 2.5 mm × 2.5 mm 10-pin SON (DSK) - surface-mount, thermally enhanced for space-constrained USB modules. |
Pinout & Package
TPS62750DSKR is housed in a 2.5 mm × 2.5 mm, 10-pin SON (DSK) package with exposed thermal pad (Power PAD). Pin 1 is PGND; pin 10 is AVIN. The package supports reflow soldering per JEDEC J-STD-020 and provides low thermal resistance (RθJA = 60.6°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1) | Power Ground | Return path for high-current N-MOSFET switch; must be connected to low-impedance ground plane. |
| L (2) | Switch Node | Connects internal HS/LS MOSFETs to external inductor; carries high di/dt switching current. |
| H/L (3) | Current Limit Select | Logic input selecting upper (HI) or lower (LO) input current limit range; must be terminated. |
| EN (4) | Enable Control | Active-high digital enable; pulling low forces shutdown and activates output discharge. |
| FB (5) | Feedback Input | Monitors output voltage via external resistor divider; sets regulated VOUT based on 0.6 V internal reference. |
| AGND (6) | Analog Ground | Reference ground for feedback and control circuitry; separate from PGND to reduce noise coupling. |
| ISET_L (7) | Lower Current Limit Set | Connects external resistor to program 50–300 mA average input current limit. |
| ISET_U (8) | Upper Current Limit Set | Connects external resistor to program 300–1300 mA average input current limit. |
| PVIN (9) | Power Input | Main VIN supply for power stage; decoupled with CIN (10 µF ceramic). |
| AVIN (10) | Analog Input | Low-noise analog supply for internal reference and error amplifier; tied to PVIN. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Average Input Current Limit | Two independent ranges (50–300 mA / 300–1300 mA) with ±10% accuracy - enables strict USB 2.0/3.0 bus current compliance. |
| Automatic PFM/PWM Transition | Seamless mode switching at light loads - sustains >90% efficiency across full 0–1.3 A input current range. |
| Hot-Plug & Reverse Current Protection | UVLO (2.9 V rising) and controlled startup/shutdown - prevents inrush surges and blocks backfeed into USB host. |
| Soft-Start with Inrush Control | Output ramps from 5% to 95% of target in controlled time - avoids battery sag or rail collapse during power-up. |
| Output Discharge on Shutdown | Internal 85–300 Ω resistor connects SW to PGND when EN = GND - safely discharges output capacitor without external circuitry. |
Applications
| USB Wireless Modem | Portable USB Peripheral |
|---|---|
Use Scenario: Compact LTE/3G datacard powered directly from USB host port with strict 500 mA current budget. IC Role / Device Role / Timing Role: Primary USB-compliant step-down regulator providing stable 3.6 V to baseband processor and RF front-end. Use Value: Programmable 500 mA input current limit ensures USB enumeration success; 2.25 MHz switching allows <10 mm² total solution size. |
Use Scenario: Battery-backed USB HID device (e.g., fingerprint reader) requiring clean, low-noise 3.3 V rail from 5 V bus. IC Role / Device Role / Timing Role: Efficient buck converter with reverse current blocking and hot-plug safe startup. Use Value: Prevents backfeed into host during disconnect; soft-start avoids USB suspend trigger from inrush current. |
| Handheld Computer | USB-Powered Industrial Sensor Node |
Use Scenario: Ruggedized PDA with dual-battery backup and USB OTG capability, needing regulated 3.6 V for PMIC and display driver. IC Role / Device Role / Timing Role: Main system power regulator with thermal shutdown and short-circuit protection for field reliability. Use Value: 150°C thermal shutdown with 20°C hysteresis prevents latch-up; PFM mode extends battery life during idle periods. |
Use Scenario: Remote environmental sensor node drawing power only from USB during configuration and firmware update. IC Role / Device Role / Timing Role: USB current-limited power source enabling safe, standards-compliant field programming. Use Value: ±10% accurate current limit guarantees no violation of USB 2.0 spec; shutdown discharge clears VOUT before reprogramming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62751DSKR | Forced PWM mode only (no auto PFM); higher quiescent current (30 mA vs. 0.96 mA) | Better EMI control in noise-sensitive RF sections; unsuitable for ultra-low-power sleep modes | Select TPS62751DSKR when spectral purity outweighs light-load efficiency. |
| TPS62231DRVR | Fixed 3.3 V output; 3 MHz switching; no programmable current limit; smaller 2 mm × 2 mm 6-pin WSON | Drop-in replacement where USB current limiting is not required and fixed VOUT suffices | Choose TPS62231DRVR for cost-sensitive, non-USB applications needing minimal BOM count. |
Compared with TPS62750DSKR, TPS62751DSKR sacrifices light-load efficiency for deterministic PWM timing, while TPS62231DRVR trades programmability and USB compliance for footprint and cost reduction - making TPS62750DSKR uniquely suited for USB-hosted portable devices requiring both current limiting and adaptive efficiency.
Availability
TPS62750DSKR is available at Aetrix Electronics and suitable for USB wireless modems, portable USB peripherals, and handheld computers requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for TPS62750DSKR 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 designing analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS6275x product line was engineered specifically for USB-powered portable systems, emphasizing programmable current limiting, hot-plug safety, and compact high-frequency operation - addressing core constraints of battery life, USB compliance, and board space.
FAQ
What is the input voltage range supported by the TPS62750DSKR?
The TPS62750DSKR supports an input voltage range of 2.9 V to 6.0 V. This range accommodates single-cell Li-ion batteries (2.9–4.2 V) and standard USB 5 V bus operation, ensuring compatibility with both battery-powered and bus-powered USB applications. Operation below 2.9 V triggers undervoltage lockout, disabling the device until VIN rises above 2.9 V.
How does the TPS62750DSKR implement USB-compliant current limiting?
The TPS62750DSKR implements USB-compliant current limiting through two externally programmable average input current thresholds: 50–300 mA (low range) and 300–1300 mA (high range), selected via the H/L pin. An external resistor on ISET_L or ISET_U sets the limit with ±10% accuracy - meeting USB 2.0/3.0 specifications without requiring host negotiation or additional monitoring circuitry.
Does the TPS62750DSKR support automatic mode transition between PWM and PFM?
Yes, the TPS62750DSKR automatically transitions from PWM to PFM mode at light loads to maintain high efficiency. When inductor current drops to zero (discontinuous conduction), the device enters Power Save Mode, reducing switching frequency and quiescent current to 745–960 µA. It resumes PWM operation when load demand increases beyond the PFM sustain threshold.
What protection features are integrated into the TPS62750DSKR?
The TPS62750DSKR integrates hot-plug protection (via UVLO and controlled startup), reverse current blocking (prevents backfeed into USB host), short-circuit protection (reduces current limit to 1/3 during overload), thermal shutdown (150°C trip with 20°C hysteresis), and output discharge (85–300 Ω internal path activated on EN = GND). These ensure robust operation in uncontrolled USB environments.
Can the TPS62750DSKR be used with a fixed output voltage, or is it adjustable only?
The TPS62750DSKR is designed for adjustable output voltage (0.8 V to 0.85×VIN) using an external resistor divider on the FB pin, referencing an internal 0.6 V bandgap. While TI offers fixed-output variants (e.g., TPS62750 with factory-set VOUT), the TPS62750DSKR itself requires external resistors - enabling flexible system-level voltage tuning without changing the IC, unlike fixed-output alternatives such as TPS62231DRVR.
TPS62750DSKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, USB
- Voltage - Input:
- 2.9V ~ 6V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.8V ~ 5.1V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SON (2.5x2.5)
TPS62750DSKR FAQ
1.How can I place an order for TPS62750DSKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62750DSKR 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 TPS62750DSKR reliable?
The price and inventory of TPS62750DSKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62750DSKR is usually 5 days.
3.What payment methods are accepted for TPS62750DSKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62750DSKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62750DSKR?
TPS62750DSKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62750DSKR 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 TPS62750DSKR?
For technical support, including TPS62750DSKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62750DSKR requirements.
6.How does Aetrix verify that TPS62750DSKR is sourced from the original manufacturer or authorized distributors?
All TPS62750DSKR 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 TPS62750DSKR meets industry standards.
7.What is the process for return or replacement of TPS62750DSKR?
All TPS62750DSKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62750DSKR, 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 TPS62750DSKR part is unused and in its original packaging.
Return procedure for TPS62750DSKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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