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Texas Instruments TPS62665YFFR
- Part No.:
- TPS62665YFFR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFBGA, DSBGA
- Datasheet:
-
TPS62665YFFR.pdf
- Description:
- IC REG BUCK 1.2V 1A 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,093
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Product details
Overview
TPS62665YFFR from Texas Instruments is a 6-MHz synchronous step-down DC-DC converter in a 6-pin DSBGA package, delivering up to 1000 mA at 1.8 V output with ±2% DC accuracy, 31 μA quiescent current, and automatic PFM/PWM mode switching - optimized for Li-ion–powered portable devices requiring ultra-small footprint and high light-load efficiency.
For engineers reviewing the TPS62665YFFR datasheet, TPS62665YFFR pinout, TPS62665YFFR application, or TPS62665YFFR equivalent, key selection criteria include its regulated 6-MHz switching frequency, integrated active power-down discharge (15 Ω), 2.3–5.5 V input range, 1.8 V fixed output, and NanoFree™ packaging enabling sub-12 mm² total solution size.
Technical Context
The TPS62665YFFR employs a frequency-locked ring-oscillating modulator architecture-eliminating traditional loop compensation-to achieve instantaneous transient response and inherent stability across L/CO variations. It operates in discontinuous conduction mode (DCM) during PFM and continuous conduction mode (CCM) during PWM.
Its MODE pin selects between auto-switching PFM/PWM (MODE = LOW) or forced fixed-frequency PWM (MODE = HIGH); EN enables soft-start with <60-μs startup time; FB senses output via internal 480-kΩ divider; and integrated 15-Ω discharge resistor actively bleeds VOUT during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V with ±2% total DC accuracy over line/load/temperature - ensures stable core voltage for low-power processors. |
| Max Output Current | 1000 mA peak - supports single-core application processors and RF transceivers in space-constrained handsets. |
| Switching Frequency | Regulated 6 MHz (5.4–6.6 MHz) - enables use of 0.47 μH chip inductors and 4.7 μF ceramic capacitors for minimal board area. |
| Quiescent Current | 31 μA typical in PFM mode - extends battery runtime during standby without sacrificing transient response. |
| Input Voltage Range | 2.3 V to 5.5 V - fully covers Li-ion battery discharge curve (3.0–4.2 V nominal + extended range). |
| Shutdown Current | <1 μA - reduces system leakage during deep sleep states in always-on sensor nodes. |
| Output Discharge | Integrated 15 Ω discharge path - eliminates external components for controlled VOUT ramp-down during disable. |
Pinout & Package
TPS62665YFFR is housed in a 1.30 mm × 0.93 mm, 6-pin NanoFree™ DSBGA (YFF) package - designed for ultra-thin mobile applications with minimal PCB footprint and thermal resistance (RθJA = 130°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.3–5.5 V supply; connects to battery or PMIC rail - requires local 4.7 μF ceramic decoupling. |
| SW | Switch node | Drain of internal P-channel MOSFET; drives external 0.47 μH inductor - high dv/dt node requiring tight layout. |
| FB | Feedback sense | Connects directly to VOUT; internal 480-kΩ divider sets 1.8 V regulation - no external resistors needed. |
| MODE | Mode control | LOW = auto PFM/PWM; HIGH = forced PWM - enables noise-sensitive operation without external logic. |
| EN | Enable input | Active-high; internal pull-down; must be terminated - initiates soft-start and disables discharge when pulled low. |
| GND | Ground reference | Two GND pins (B1, C2) provide low-inductance return path for power and signal currents. |
Key Features
| Feature | Design Value |
|---|---|
| PFM/PWM Auto Mode Switching | Maintains >85% efficiency from 1 mA to 1000 mA load - eliminates manual mode control and improves battery life across usage states. |
| 6-MHz Regulated Frequency | Enables 0.47 μH inductor and 4.7 μF output capacitor - achieves full regulation in <12 mm² area with no ferrite beads required. |
| Active Output Discharge | 15 Ω internal resistor discharges VOUT within ~1 ms for 10 μF load - removes need for external MOSFET or resistor network. |
| Ultra-Fast Startup | <60 μs enable-to-VOUT rise time - meets strict power sequencing requirements in multi-rail mobile SoCs. |
| Thermal & Short-Circuit Protection | 140°C thermal shutdown with 10°C hysteresis and cycle-by-cycle P-MOS current limit - ensures robustness in compact enclosures. |
Applications
| Smartphone Application Processor Core Rail | Wearable Sensor Hub Power |
|---|---|
Use Scenario: Powers ARM Cortex-A/M series CPU cores in LTE smartphones during burst-mode operation with dynamic voltage scaling. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated 1.8 V at up to 1000 mA with <100 μs transient recovery. Use Value: Maintains ±2% output accuracy across 0–1000 mA load steps while consuming only 31 μA in idle - extending talk time by 12% vs. legacy 2-MHz converters. | Use Scenario: Supplies power to ultra-low-power sensor fusion hubs (e.g., BHI260AP) in fitness trackers with intermittent BLE transmission. IC Role / Device Role / Timing Role: Always-on buck converter operating in PFM mode at 1–5 mA loads, transitioning to PWM only during 100-ms sensor readout bursts. Use Value: Achieves 91% peak efficiency at 100 mA and >82% at 1 mA - enabling 14-day battery life on a 120 mAh coin cell. |
| Portable Medical Pulse Oximeter | IoT Edge Node Microcontroller Rail |
Use Scenario: Provides clean, low-noise 1.8 V supply to analog front-end (AFE) and optical drivers in FDA-cleared wearable oximeters. IC Role / Device Role / Timing Role: Fixed-frequency PWM mode (MODE = HIGH) suppresses switching noise near sensitive photodiode signals. Use Value: Reduces output ripple to <10 mVPP at 200 mA - eliminating 6-MHz interference in ADC measurements without added LC filtering. | Use Scenario: Powers ARM Cortex-M4 microcontrollers in industrial wireless sensor nodes deployed in remote locations. IC Role / Device Role / Timing Role: Primary system rail with integrated discharge ensuring safe reset sequencing during brown-out events. Use Value: Active 15 Ω discharge clears 3.3 V rail in <5 ms - preventing latch-up in connected peripherals during firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62661YFFR | Same package and architecture; 1.8 V fixed output but optimized for faster startup (<60 μs) and lower PFM ripple (20 mVPP vs. 24 mVPP). | Better suited for systems requiring immediate wake-from-sleep response; identical pinout and BOM. | Select TPS62661YFFR when startup time dominates over absolute light-load efficiency. |
| TPS62086RRLR | 3-MHz, 2-A adjustable-output buck in 10-pin WSON; higher current, lower frequency, no integrated discharge resistor. | Targets higher-power wearables or dual-rail systems needing programmable output; larger footprint and external discharge required. | Choose TPS62086RRLR only when >1 A output or adjustable VOUT is mandatory - not a drop-in replacement. |
Compared with TPS62661YFFR, the TPS62665YFFR trades marginally higher PFM ripple for identical efficiency and smaller solution size; versus TPS62086RRLR, it offers half the footprint and integrated discharge at the cost of fixed 1.8 V output and 1-A limit.
Availability
TPS62665YFFR is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, portable medical devices, and IoT edge nodes requiring stable component supply with guaranteed long-term availability.
Supply support for TPS62665YFFR 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 TPS6266x product line was engineered specifically for ultra-thin, battery-powered mobile devices demanding sub-12 mm² power solutions, high light-load efficiency, and seamless PFM/PWM transitions - targeting smartphones, wearables, and portable medical equipment.
FAQ
What is the output voltage tolerance of the TPS62665YFFR over temperature and load?
The TPS62665YFFR delivers ±2% total DC voltage accuracy across –40°C to 85°C ambient temperature, 2.3–5.5 V input, and 0–1000 mA load - verified per TI SLVS871D datasheet Section 6.5. This includes initial tolerance, line regulation (0.13%/V), and load regulation (–0.00025%/mA), ensuring reliable core voltage for precision analog and digital circuits.
Does the TPS62665YFFR require external feedback resistors for its 1.8 V output?
No, the TPS62665YFFR integrates an internal resistor divider with 480-kΩ top resistor to set its fixed 1.8 V output - eliminating external components. The FB pin connects directly to VOUT, simplifying layout and reducing BOM count. This is confirmed in the Pin Functions table (Section 5) and Typical Application schematic (Figure 9) of the SLVS871D datasheet.
How does the MODE pin affect efficiency and noise performance of the TPS62665YFFR?
When MODE = LOW, the TPS62665YFFR automatically switches between high-efficiency PFM (31 μA IQ) at light loads and PWM at heavy loads. When MODE = HIGH, it forces fixed 6-MHz PWM - reducing output noise and EMI but lowering light-load efficiency by ~15% due to higher quiescent current. This trade-off is documented in Sections 8.3.2 and 6.5 of SLVS871D.
What is the purpose of the integrated 15 Ω discharge resistor in the TPS62665YFFR?
The TPS62665YFFR's integrated 15 Ω discharge resistor actively pulls down VOUT after EN is deasserted - clearing residual charge from the output capacitor without external components. As specified in Section 6.5 (rDIS = 15–50 Ω), this enables safe, rapid power-down sequencing in multi-rail systems and prevents back-driving of downstream circuitry.
Can the TPS62665YFFR operate with input voltages below 2.3 V?
No - the TPS62665YFFR has a minimum recommended input voltage of 2.3 V and an undervoltage lockout (UVLO) threshold of 2.05 V (typical). Operation below 2.3 V risks instability or shutdown; the device will not regulate output below UVLO release (2.1 V). This is defined in Section 6.3 (Recommended Operating Conditions) and Section 6.5 (UVLO parameter) of SLVS871D.
TPS62665YFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-UFBGA, DSBGA
- 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):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA
TPS62665YFFR FAQ
1.How can I place an order for TPS62665YFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62665YFFR 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 TPS62665YFFR reliable?
The price and inventory of TPS62665YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62665YFFR is usually 5 days.
3.What payment methods are accepted for TPS62665YFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62665YFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62665YFFR?
TPS62665YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62665YFFR 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 TPS62665YFFR?
For technical support, including TPS62665YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62665YFFR requirements.
6.How does Aetrix verify that TPS62665YFFR is sourced from the original manufacturer or authorized distributors?
All TPS62665YFFR 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 TPS62665YFFR meets industry standards.
7.What is the process for return or replacement of TPS62665YFFR?
All TPS62665YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62665YFFR, 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 TPS62665YFFR part is unused and in its original packaging.
Return procedure for TPS62665YFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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