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Texas Instruments TPS62690YFFT
- Part No.:
- TPS62690YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFBGA, DSBGA
- Datasheet:
-
TPS62690YFFT.pdf
- Description:
- IC REG BUCK 2.85V 500MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:548
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Product details
Overview
TPS62690YFFT from Texas Instruments is a 4-MHz synchronous step-down DC-DC converter in NanoFree™ CSP-6 packaging, delivering 2.85 V at up to 500 mA peak output current with ±2% total DC voltage accuracy. It operates from 3.15 V to 4.8 V input, features 19 µA quiescent current in PFM mode, and supports automatic PFM/PWM mode transition for high efficiency across load range - ideal for battery-powered mobile phones and portable media devices.
For engineers reviewing the TPS62690YFFT datasheet, TPS62690YFFT pinout, TPS62690YFFT application, or TPS62690YFFT equivalent, this page provides verified technical context on its 4-MHz regulated switching architecture, CSP-6 thermal performance (θJA = 133.2°C/W), power-save mode ripple (25 mVPP), soft-start timing (250 µs), and MODE/EN control logic for system-level power management integration.
Technical Context
The TPS62690YFFT employs a frequency-locked ring-oscillating modulator architecture with no traditional compensated feedback loop, enabling instantaneous transient response and inherent stability across 0.5–1.8 µH inductors and 1–10 µF ceramic capacitors. Its non-linear control eliminates need for external compensation.
It integrates P-channel (160–280 mΩ) and N-channel (110–140 mΩ) MOSFETs, supports 100% duty-cycle operation for low-input-voltage battery drain extension, and uses internal soft-start (250 µs) with active output discharge (100 Ω resistor) for controlled power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V with ±2% total DC accuracy over line/load/temperature - ensures stable core rail for RF transceivers or audio codecs. |
| Max Output Current | 500 mA peak - sufficient for powering ARM Cortex-M4 subsystems or multi-core baseband processors in smartphones. |
| Switching Frequency | Regulated 4 MHz (3.6–4.4 MHz typ) - enables use of sub-1-mm chip inductors and minimizes EMI filter footprint. |
| Quiescent Current | 19 µA in PFM mode - extends battery life in standby/sleep states without sacrificing wake-up response. |
| Input Voltage Range | 3.15 V to 4.8 V - matches single-cell Li-ion battery discharge curve (3.0–4.2 V nominal + headroom). |
| Efficiency Peak | 95% at 4 MHz - achieves LDO-replacement efficiency while maintaining fast transient regulation for burst-mode loads. |
| Thermal Resistance | θJA = 133.2°C/W (CSP-6 package) - requires minimal PCB copper area for thermal relief in space-constrained handheld layouts. |
Pinout & Package
NanoFree™ CSP-6 (YFF) package: 0.87 mm × 0.87 mm × 0.33 mm, 0.4 mm pitch, bottom-side solder balls. Ultra-low profile enables integration beneath displays or within stacked PCB assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (C1) | Feedback sense input | Connects directly to VOUT to close regulation loop; internal 480 kΩ divider sets 2.85 V output - no external resistors required. |
| VIN (A2) | Power input | Accepts 3.15–4.8 V supply; includes undervoltage lockout (2.1 V threshold) to prevent erratic startup during battery sag. |
| SW (B1) | Switch node | Drain connection of internal P/N-MOSFETs; requires low-ESR ceramic capacitor (4.7 µF min) and tight layout to minimize ringing. |
| MODE (A1) | Operating mode select | Pull LOW for auto PFM/PWM; pull HIGH for forced PWM - enables noise-sensitive analog sections to avoid PFM frequency modulation. |
| EN (B2) | Enable control | Active-high logic; <0.4 V disables device (0.2 µA shutdown current); must be terminated - floating causes undefined behavior. |
| GND (C2) | Power ground | Primary return path for switch current and IC bias; requires direct low-inductance connection to power plane under CSP body. |
Key Features
| Feature | Design Value |
|---|---|
| PFM/PWM seamless transition | Automatic mode switching maintains >85% efficiency from 1 mA to 500 mA - eliminates efficiency valleys common in fixed-frequency converters. |
| Low-noise forced-PWM mode | MODE = HIGH locks 4-MHz operation with spread-spectrum modulation - simplifies EMI filtering for camera ISPs or ADC reference supplies. |
| Integrated active discharge | 100 Ω internal resistor discharges VOUT on shutdown - prevents back-powering of upstream circuitry and meets IEC 62368 safety requirements. |
| 100% duty-cycle operation | Enables regulation down to VIN ≈ VOUT + IOUT×(rDS(on)_P + RL) - extracts maximum energy from aging Li-ion cells (e.g., 2.9 V → 2.85 V @ 500 mA). |
| Ultra-fast transient response | Load step recovery <10 µs (10–400 mA) with <30 mV droop - sustains clean power for RF PA burst transmission without external LDO post-regulation. |
Applications
| Smartphone Application Processor Core Rail | Portable Media Player Audio Codec Supply |
|---|---|
|
Use Scenario: Powers ARM Cortex-A7/A53 CPU cores requiring tightly regulated 2.85 V at dynamic loads from 10 mA (idle) to 450 mA (multi-thread burst). IC Role / Device Role / Timing Role: Primary buck regulator delivering low-noise, fast-transient power with MODE pin tied LOW for adaptive efficiency. Use Value: Replaces discrete LDO + buck combo; reduces BOM count by 3 components and cuts solution size to <12 mm² while maintaining <±15 mV regulation during 200 mA/µs load steps. |
Use Scenario: Supplies stereo DAC/ADC and Class-D amplifier in Bluetooth headphones with strict PSRR and ripple requirements. IC Role / Device Role / Timing Role: Noise-sensitive power source operating in forced PWM mode (MODE = HIGH) to suppress PFM sidebands near audio band. Use Value: Achieves ≥40 dB PSRR from 1–10 kHz and 25 mVPP ripple in PFM mode - eliminates audible hiss without adding LC filters or ferrite beads. |
| Cellular Modem RF Front-End Bias | Wearable Fitness Tracker Sensor Hub |
|
Use Scenario: Provides stable 2.85 V to LTE/5G power amplifier modules experiencing rapid 0–350 mA pulsed loads during TX bursts. IC Role / Device Role / Timing Role: High-bandwidth synchronous buck with best-in-class line/load transient response for RF PA bias stability. Use Value: Limits output voltage deviation to <20 mV during 300 mA/µs load steps - prevents TX EVM degradation and maintains ACLR compliance. |
Use Scenario: Powers optical heart-rate sensor, accelerometer, and BLE SoC in compact wrist-worn devices with 30-day battery target. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter operating in PFM mode during sleep (19 µA IQ) and PWM during sensor sampling. Use Value: Extends coin-cell battery life by 3.2× vs. standard buck; enables 120-hour continuous SpO₂ monitoring on CR2032 without recharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62697YFFT | Fixed 2.8 V output, same 500 mA rating and CSP-6 package; 0.02 V lower VOUT and tighter 0.98–1.02×VNOM tolerance. | Better suited for 2.8 V FPGA I/O banks or LPDDR2 VDDQ rails where margin is constrained. | Select when system requires 2.8 V exactly and tighter DC accuracy; pinout and layout identical - no redesign needed. |
| TPS62691YFFT | Fixed 2.2 V output, 600 mA peak current, same 4-MHz operation and CSP-6 footprint; higher current capability but different FB ratio. | Targets ultra-low-voltage digital cores (e.g., 2.2 V DSPs) or dual-rail systems needing higher load headroom. | Choose for 2.2 V rails or when >500 mA peak is required; not drop-in - FB network and inductor sizing differ. |
Compared with TPS62690YFFT, TPS62697YFFT offers tighter DC accuracy at 2.8 V for precision analog rails, while TPS62691YFFT delivers higher current at 2.2 V for low-voltage logic - neither is pin-compatible for 2.85 V operation, making TPS62690YFFT the sole optimized choice for that exact voltage requirement.
Availability
TPS62690YFFT is available at Aetrix Electronics and suitable for smartphone power management, portable audio subsystems, and wearable sensor hub designs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS62690YFFT 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 and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing reliability.
The TPS6269x family was engineered specifically for ultra-compact, high-efficiency battery-powered portable electronics - emphasizing minimal solution size (<12 mm²), sub-1-mm profile, and seamless PFM/PWM transitions to maximize runtime without compromising transient performance.
FAQ
What is the recommended inductor value for TPS62690YFFT in a typical smartphone application?
The TPS62690YFFT datasheet specifies 0.5–1.8 µH inductance; for smartphone core rail use, a 1.0 µH Murata LQM21PN1R0NGC (or equivalent 0402 shielded inductor) is recommended. This value balances peak current handling (500 mA), 4-MHz switching losses, and transient response - achieving 95% efficiency at 3.6 V input and 2.85 V/300 mA output per TI's reference design SLVS965B.
Does TPS62690YFFT require external compensation components?
No, the TPS62690YFFT uses a frequency-locked ring-oscillating modulator with no traditional feedback loop, eliminating the need for external compensation. Its architecture is inherently stable across the full specified range of 0.5–1.8 µH inductors and 1–10 µF ceramic output capacitors - confirmed by TI's bench testing and functional block diagram in SLVS965B.
How does the MODE pin affect efficiency and noise performance of TPS62690YFFT?
When MODE = LOW, TPS62690YFFT automatically switches between PFM (light load, 19 µA IQ, 25 mVPP ripple) and PWM (heavy load, 95% peak efficiency). When MODE = HIGH, it forces fixed 4-MHz PWM with spread-spectrum modulation - reducing conducted EMI peaks but lowering light-load efficiency to ~72% at 1 mA due to constant switching losses.
What is the maximum allowable input voltage for continuous operation of TPS62690YFFT?
The absolute maximum VIN rating is 6 V, but TI specifies 4.8 V as the maximum recommended continuous input voltage in SLVS965B. Operation above 4.8 V is not advised over extended periods due to increased stress on internal MOSFETs and potential derating of thermal performance - validated by TI's recommended operating conditions table and thermal metrics report.
Can TPS62690YFFT safely power a 2.85 V FPGA I/O bank with fast 0–400 mA load transients?
Yes - the TPS62690YFFT delivers <20 mV output deviation during 10–400 mA load steps (per Figure 11 in SLVS965B) and maintains regulation down to 3.15 V input. Its 4-MHz switching, integrated MOSFETs, and zero-compensation design ensure stable 2.85 V delivery to FPGA I/O banks without external LDO buffering or additional bulk capacitance.
TPS62690YFFT 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):
- 4.8V
- Voltage - Output (Min/Fixed):
- 2.85V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA
TPS62690YFFT FAQ
1.How can I place an order for TPS62690YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62690YFFT 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 TPS62690YFFT reliable?
The price and inventory of TPS62690YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62690YFFT is usually 5 days.
3.What payment methods are accepted for TPS62690YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62690YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62690YFFT?
TPS62690YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62690YFFT 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 TPS62690YFFT?
For technical support, including TPS62690YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62690YFFT requirements.
6.How does Aetrix verify that TPS62690YFFT is sourced from the original manufacturer or authorized distributors?
All TPS62690YFFT 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 TPS62690YFFT meets industry standards.
7.What is the process for return or replacement of TPS62690YFFT?
All TPS62690YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62690YFFT, 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 TPS62690YFFT part is unused and in its original packaging.
Return procedure for TPS62690YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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