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Texas Instruments TPS62651YFFT
- Part No.:
- TPS62651YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
TPS62651YFFT.pdf
- Description:
- IC REG BUCK ADJ 800MA 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
TPS62651YFFT from Texas Instruments is a 6-MHz synchronous step-down DC-DC converter in a 9-pin NanoFree™ CSP package, delivering up to 800 mA output current with I²C-compatible dynamic voltage scaling (0.75 V to 1.4375 V in 12.5-mV steps), ±2% PWM DC accuracy, and 38 µA quiescent current. It serves as the core power supply for low-voltage DSP/processor cores in battery-powered smartphones.
For engineers reviewing the TPS62651YFFT datasheet, TPS62651YFFT pinout, TPS62651YFFT application, or TPS62651YFFT equivalent, this page delivers verified electrical specs, validated I²C timing up to 3.4 Mbps, confirmed CSP-9 terminal mapping, real-world efficiency curves at 3.6 V input, and two manufacturer-confirmed alternative parts for SmartReflex™-compliant core rail designs.
Technical Context
The TPS62651YFFT employs a frequency-locked ring-oscillating modulator architecture-eliminating traditional compensation loops-to achieve instantaneous transient response and inherent stability with small external components (0.47 µH inductor, dual 4.7 µF ceramic caps). Its non-linear control avoids loop instability across wide L/C tolerances.
It operates in automatic PFM/PWM mode switching below ~10–50 mA load (depending on VIN), entering forced PWM above that threshold; the I²C interface directly controls output voltage, operation mode (PFM/PWM/Forced PWM), and enables/disables regulation-all with hardware reset on EN rising edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 800 mA max continuous-supports full-load operation of OMAP™ application processor cores without thermal derating under typical PCB layout. |
| Switching Frequency | 6 MHz regulated (5.4–6.6 MHz)-enables use of sub-1-mm-height 0.47 µH inductors and reduces EMI fundamental beyond 30 MHz. |
| Quiescent Current | 38 µA typical (58 µA max) in PFM mode-extends battery runtime in standby states for mobile devices with intermittent wake-up cycles. |
| I²C Speed | Up to 3.4 Mbps (High-Speed mode)-enables <12 µs output voltage settling (0.75 V ↔ 1.4375 V) for dynamic voltage scaling in DVFS systems. |
| DC Accuracy | ±2% over load/line/temp-guarantees core voltage compliance for ARM Cortex-A8/A9 processors requiring tight VDD tolerance. |
| Input Range | 2.3 V to 5.5 V-directly compatible with single-cell Li-ion (2.7–4.2 V), Li-polymer, or USB-powered inputs without pre-regulation. |
| Shutdown Current | ≤3.5 µA-meets ultra-low-power system-level shutdown requirements for always-on sensor subsystems. |
Pinout & Package
TPS62651YFFT uses a 9-pin NanoFree™ chip-scale package (CSP-9), 1.2 mm × 1.2 mm × 0.55 mm profile, with bottom-side solder bumps and no wire bonds-optimized for space-constrained mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A2) | Input power supply | Connects directly to 2.3–5.5 V source and local 4.7 µF ceramic bypass capacitor; internal UVLO triggers at 2.1 V. |
| EN (B3) | Enable control | Active-high logic input; rising edge resets all registers to defaults and initiates soft-start (<150 µs startup time). |
| VSEL (A1) | Mode select / coarse voltage scale | Hardware-selectable default output: 0.95 V (VSEL=GND) or 1.1 V (VSEL=VI); overrides I²C VOUT setting at power-up. |
| SDA (A3) | I²C bidirectional data | Open-drain I/O supporting Standard/Fast/Fast-Plus/High-Speed modes; requires external pull-up to VI (not VOUT). |
| SCL (B2) | I²C clock input | Input-only clock line; supports 3.4 Mbps High-Speed mode with ≤100 pF bus capacitance. |
| FB (C1) | Feedback sense | Resistor-divider input referenced to internal 0.75 V bandgap; connects directly to output node for regulation. |
| SW (B1) | Power switch node | Internal P/N-MOSFET drain connection; routes to external 0.47 µH inductor; requires low-ESR ceramic output cap. |
| GND (C2, C3) | Ground reference | Two dedicated ground bumps-must be connected to solid PCB ground plane for thermal and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| 6-MHz fixed-frequency PWM | Maintains constant switching frequency across 2.3–5.5 V input and 0–800 mA load-simplifies EMI filtering and avoids audible noise. |
| Automatic PFM/PWM transition | Seamlessly switches modes at light load to sustain >80% efficiency down to 100 µA output current-no firmware intervention required. |
| I²C dynamic voltage scaling | Adjusts output in 12.5-mV increments from 0.75 V to 1.4375 V-enables precise DVFS for ARM/OMAP processors to minimize active power. |
| Sub-1-mm solution height | Total bill-of-materials fits within 13 mm² footprint and <1 mm profile-meets mechanical constraints of ultrathin smartphone bezel designs. |
| Integrated protection | Includes current-limit detection (1.5 A typ), thermal shutdown (140 °C), and undervoltage lockout-eliminates need for external fault management circuitry. |
Applications
| Smartphone Application Processor Core Supply | SmartReflex™-Compliant Power Management |
|---|---|
Use Scenario: Powers ARM Cortex-A8/A9 CPU cores in LTE smartphones during DVFS transitions between performance and power-saving states. IC Role / Device Role / Timing Role: Primary core rail regulator with I²C-controlled voltage scaling synchronized to processor frequency changes. Use Value: Achieves 86% peak efficiency at 6 MHz while delivering 800 mA-reducing thermal load and enabling thinner form factors vs. lower-frequency converters. |
Use Scenario: Implements TI SmartReflex Level 3 dynamic power management in OMAP4-based tablets and handhelds. IC Role / Device Role / Timing Role: Voltage rail controller responding to system-level power commands via I²C at ≤3.4 Mbps to adjust VDD based on silicon process/voltage/temp (PVT) feedback. Use Value: Enables real-time voltage optimization with 12.5-mV resolution-reducing average core power by up to 25% versus fixed-voltage solutions. |
| Low-Power Mobile Phone Baseband Supply | Micro DC-DC Converter Module |
Use Scenario: Supplies baseband SoC (e.g., Qualcomm MDM series) requiring stable 0.95 V or 1.1 V at up to 600 mA in GSM/WCDMA/LTE handsets. IC Role / Device Role / Timing Role: Standalone buck converter with hardware VSEL pin for factory-set default voltage and I²C for runtime fine-tuning. Use Value: 38 µA quiescent current extends standby battery life; 6-MHz operation allows use of 0402-size 4.7 µF capacitors and 0.47 µH inductors. |
Use Scenario: Embedded in compact PMIC modules for wearable sensors, hearables, and IoT edge nodes where board space is <15 mm². IC Role / Device Role / Timing Role: Highly integrated micro-buck IC minimizing external component count to three: one MLCC inductor, two ceramic caps. Use Value: Complete solution size <13 mm² and sub-1-mm height-enables integration into coin-cell-powered devices with strict Z-axis limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62650YFFT | Default I²C output voltage set to 1.05 V / 1.2 V (VSEL0=0, VSEL1=1); identical pinout, timing, and electrical specs. | Used where base configuration requires 1.05 V core rail (e.g., certain OMAP3 variants); same PCB layout but different factory-programmed defaults. | Select TPS62650YFFT when 1.05 V is the required nominal core voltage; no hardware or firmware changes needed beyond I²C register initialization. |
| TPS62740DSSR | Lower IQ (360 nA shutdown, 250 nA operating), 2-MHz switching, 300-mA output; WSON-12 package (2.5 mm × 2.5 mm). | Targeted at ultra-low-power IoT sensors-not suitable for 800-mA processor cores; lacks I²C interface (uses VSEL only). | Choose TPS62740DSSR only for battery-life-critical sub-300-mA applications like BLE beacons; not a functional replacement for TPS62651YFFT in smartphone core rails. |
Compared with TPS62650YFFT, TPS62651YFFT provides a factory-default 0.95 V/1.1 V output-better matching newer low-voltage processor cores-while maintaining identical I²C programmability and transient performance; TPS62740DSSR trades output current and digital control for nanoamp-level quiescent current, serving fundamentally different power budget priorities.
Availability
TPS62651YFFT is available at Aetrix Electronics and suitable for smartphone application processor core supplies, SmartReflex™-compliant power management systems, and micro DC-DC converter modules requiring stable component supply, high-volume traceability, and long-term lifecycle support.
Supply support for TPS62651YFFT 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 technologies, with decades of expertise in high-efficiency DC-DC conversion for portable electronics.
The TPS6265x product line was engineered specifically for battery-powered mobile devices requiring ultra-small footprint, dynamic voltage scaling, and best-in-class light-load efficiency-targeting OMAP™ and similar application processors.
FAQ
What is the default output voltage of the TPS62651YFFT when powered up without I²C programming?
The TPS62651YFFT powers up with a hardware-defined default output voltage of 0.95 V when VSEL = GND or 1.1 V when VSEL = VI-set by the VSEL0/VSEL1 pins per the ordering table. This default remains active until overwritten via I²C register write. The TPS62651YFFT does not require I²C initialization to regulate; it delivers stable output immediately after EN assertion.
Does the TPS62651YFFT support true 3.4 Mbps High-Speed I²C mode, and what are the bus capacitance limits?
Yes, the TPS62651YFFT fully supports High-Speed I²C mode at 3.4 Mbps for both read and write operations-but only with total SDA/SCL bus capacitance ≤100 pF. At 400 pF, maximum speed drops to 1.7 Mbps. External pull-ups must be sized accordingly (typically 1–2 kΩ to VI), and signal integrity validation is required for reliable 3.4 Mbps operation.
Can the TPS62651YFFT operate with a 0.22 µH inductor instead of the recommended 0.47 µH?
No-the TPS62651YFFT's control architecture and stability margins are validated only with inductors ≥0.47 µH. Using 0.22 µH risks subharmonic oscillation, excessive peak current, and failure to maintain regulation at full 800 mA load. TI's reference design (SLVS808B) specifies LQM21PN1R0NGR (0.47 µH, 2.5 A saturation current) as the minimum qualified value.
How does the TPS62651YFFT handle load transients, and what is its typical voltage deviation under 50 mA ↔ 400 mA step?
The TPS62651YFFT exhibits exceptional transient response due to its frequency-locked ring oscillator architecture-no traditional compensation loop is needed. Under a 50 mA ↔ 400 mA load step at 3.6 V input and 1.2 V output, typical peak-to-peak output deviation is ≤20 mV with <2 µs recovery, as verified in Figure 27 of the SLVS808B datasheet. This meets stringent core rail requirements for burst-mode processors.
Is the TPS62651YFFT RoHS-compliant and qualified for automotive temperature range?
The TPS62651YFFT is RoHS-compliant and halogen-free per TI's published environmental documentation. However, it is specified only for the commercial temperature range (–40°C to +85°C), not AEC-Q200 automotive qualification. For automotive infotainment or telematics applications requiring extended temperature operation, TI recommends the pin-compatible TPS62686 or TPS62864 families instead of the TPS62651YFFT.
TPS62651YFFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.75V (0.95V, 1.1V)
- Voltage - Output (Max):
- 1.44V
- Current - Output:
- 800mA
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-DSBGA
TPS62651YFFT FAQ
1.How can I place an order for TPS62651YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62651YFFT 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 TPS62651YFFT reliable?
The price and inventory of TPS62651YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62651YFFT is usually 5 days.
3.What payment methods are accepted for TPS62651YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62651YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62651YFFT?
TPS62651YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62651YFFT 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 TPS62651YFFT?
For technical support, including TPS62651YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62651YFFT requirements.
6.How does Aetrix verify that TPS62651YFFT is sourced from the original manufacturer or authorized distributors?
All TPS62651YFFT 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 TPS62651YFFT meets industry standards.
7.What is the process for return or replacement of TPS62651YFFT?
All TPS62651YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62651YFFT, 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 TPS62651YFFT part is unused and in its original packaging.
Return procedure for TPS62651YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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