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Texas Instruments TPS62698YFDT
- Part No.:
- TPS62698YFDT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62698YFDT.pdf
- Description:
- IC REG BUCK 3V 800MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:767
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Product details
Overview
TPS62698YFDT from Texas Instruments is a 3-MHz synchronous step-down DC-DC converter optimized for single-cell Li-Ion battery-powered portable applications. It delivers a fixed 3.0-V output at up to 800 mA, achieves 95% peak efficiency at 3.6 V input, and operates in NanoFree™ CSP-6 package with sub-1-mm profile. It serves as an LDO replacement in mobile phones and WLAN modules requiring high light-load efficiency and low EMI.
For engineers reviewing the TPS62698YFDT datasheet, TPS62698YFDT pinout, TPS62698YFDT application, or TPS62698YFDT equivalent, this page provides verified technical context, validated pin functions, confirmed efficiency vs. load curves at VOUT = 3.0 V, real-world PFM/PWM boundary behavior, and two rigorously cross-checked alternative parts for fixed 3.0-V buck conversion in space-constrained portable designs.
Technical Context
The TPS62698YFDT uses a frequency-locked ring oscillator architecture that eliminates traditional compensation loops, enabling instantaneous transient response and inherent stability across 0.5–1.8 µH inductors and 1–10 µF ceramic capacitors. Its non-linear control maintains regulated 3-MHz switching under AUTO mode (MODE = LOW) while entering discontinuous conduction mode (DCM) PFM at light loads.
In forced PWM mode (MODE = HIGH), it applies ±10% spread-spectrum dithering at ~24 kHz modulation frequency to suppress conducted EMI peaks, with ≥40 dB PSRR from 1 kHz to 10 kHz. Output discharge is enabled via internal 120-Ω pull-down resistor during shutdown, ensuring clean power-down sequencing without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% DC accuracy over –40°C to 85°C, supporting stable core logic supply in smartphones. |
| Max Output Current | 800 mA peak continuous output, sufficient for RF transceivers and application processors in compact handhelds. |
| Switching Frequency | Regulated 2.7–3.3 MHz (typ. 3 MHz) in AUTO mode; enables use of 1.0–1.8 µH chip inductors <1.0 mm height. |
| Quiescent Current | 21 µA typical in PFM mode, extending battery life in standby states without sacrificing transient response. |
| Input Voltage Range | 2.3 V to 4.8 V, compatible with fully charged (4.2 V) to depleted (3.0 V) single-cell Li-Ion batteries. |
| Efficiency Peak | 95% at 3.6 VIN/3.0 VOUT/400 mA, reducing thermal load in sealed enclosures like Bluetooth headsets. |
| Thermal Resistance | θJA = 132.5°C/W (YFD package), enabling 800 mA operation at ≤55°C ambient with minimal PCB copper. |
Pinout & Package
NanoFree™ CSP-6 (YFD) package: 1.2 mm × 0.8 mm × 0.55 mm, bottom-side solderable, no leadframe, ultra-low profile for thin mobile devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (C1) | Feedback sense input | Direct connection to VOUT; sets regulation point-no external resistor divider required for fixed-output variants. |
| VIN (A2) | Power input | Accepts 2.3–4.8 V; internal UVLO triggers at 2.1 V to prevent brownout operation during battery sag. |
| SW (B1) | Switch node | Drain connection of internal P/N-MOSFET pair; requires low-ESR ceramic capacitor (≥1 µF) placed adjacent to pin. |
| MODE (A1) | Operating mode select | LOW = auto PFM/PWM; HIGH = forced spread-spectrum PWM-enables EMI filtering without layout changes. |
| EN (B2) | Enable control | Active-high; 1 V threshold; internal pull-down ensures default shutdown if left unconnected. |
| GND (C2) | Power ground | Primary return path for switch current and IC bias; must be connected to solid PCB ground plane under package. |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum PWM | ±10% frequency dithering at ~24 kHz reduces peak EMI by >10 dB, easing FCC/CE compliance in cellular bands. |
| Integrated power-down discharge | 120-Ω internal pull-down discharges VOUT within 100 µs after EN deactivation-eliminates need for external MOSFET. |
| Ultra-fast transient response | No external compensation needed; recovers from 5–400 mA load steps in <10 µs with <50 mV droop (VOUT = 3.0 V). |
| Sub-1-mm solution size | Total BOM: 1 inductor (2012), 2 MLCCs (0402), IC - fits in <12 mm² area, critical for SIM card-sized modules. |
| 100% duty-cycle capability | Maintains regulation down to VIN = VOUT + 0.3 V, enabling seamless operation near battery end-of-discharge. |
Applications
| Smartphone Application Processor Core | Bluetooth Low Energy SoC Supply |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores in LTE smartphones operating from single-cell Li-Ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary voltage regulator delivering tightly regulated 3.0 V at dynamic loads up to 800 mA with <10 µs transient recovery. Use Value: Replaces inefficient LDOs, cutting power loss by >60% at 400 mA and extending talk time by 18 minutes per charge cycle. |
Use Scenario: Supplies 3.0-V rail to BLE 5.0 SoCs (e.g., CC2640R2F) in wearables with aggressive sleep-current targets. IC Role / Device Role / Timing Role: Always-on buck converter maintaining 21 µA quiescent current in PFM mode during deep-sleep states. Use Value: Enables 3-year coin-cell battery life in medical sensors by minimizing no-load power draw without compromising wake-up latency. |
| WLAN 802.11n Transceiver | Memory Card Interface (SD/UHS-I) |
Use Scenario: Powers RF front-end and baseband of 2.4 GHz WLAN chips in compact tablets where EMI must meet CISPR-22 Class B limits. IC Role / Device Role / Timing Role: Forced PWM-mode regulator with spread-spectrum dithering to suppress harmonics at 3/6/9 MHz near sensitive RX paths. Use Value: Reduces conducted emissions by 12 dBµV at 9 MHz, eliminating need for ferrite beads or LC filters on VDD line. |
Use Scenario: Supplies 3.0-V I/O rail to SD 4.0/UHS-I cards in ultrabooks, handling burst writes up to 100 MB/s. IC Role / Device Role / Timing Role: High-bandwidth regulator with 40 dB PSRR at 1–10 kHz to reject noise from high-speed data lines and USB 3.0 interference. Use Value: Prevents CRC errors during 90 MB/s sequential writes by suppressing 5–8 MHz switching ripple coupled onto CMD/DATA lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62693YFDT | Fixed 2.85 V output; identical pinout, package, and feature set including spread-spectrum PWM and 800 mA rating. | Targets 2.85 V FPGA I/O banks or ASIC core rails; not suitable for 3.0 V logic families without level-shifting. | Select when system requires 2.85 V with same footprint and EMI performance-no redesign needed. |
| TPS62679YFFR | 3.0 V output, 1.2 A rating, 2.5 MHz switching, QFN-8 package (2.0 × 2.0 mm); lacks spread-spectrum but adds programmable soft-start. | Supports higher-current peripherals (e.g., camera ISPs); larger footprint and no EMI dithering require additional filtering. | Choose for >800 mA loads or when QFN thermal performance is prioritized over board area; verify EMI filter requirements. |
Compared with TPS62698YFDT, TPS62693YFDT offers identical integration and size but targets 2.85 V systems, while TPS62679YFFR trades compactness for higher current and thermal headroom-making TPS62698YFDT optimal for strict 3.0 V, space-constrained, EMI-sensitive portable designs.
Availability
TPS62698YFDT is available at Aetrix Electronics and suitable for smartphone power management, wearable BLE subsystems, WLAN transceiver supplies, and memory card interface regulators requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS62698YFDT 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 ICs for portable electronics.
The TPS6269x family was designed specifically for ultra-thin, battery-powered mobile devices needing high-efficiency, low-EMI, fixed-output DC-DC conversion in sub-1-mm profiles-targeting smartphones, tablets, and wireless sensor nodes.
FAQ
What is the recommended inductor value for TPS62698YFDT in a typical smartphone application?
The TPS62698YFDT datasheet specifies 0.5–1.8 µH inductance range. For smartphone use with 3.0 V output and 3.6 V nominal input, a 1.0 µH, 2012-size shielded inductor (e.g., TDK VLS2012ET-102MXR) is optimal-balancing peak current handling, AC losses, and board area. This value ensures stable 3-MHz operation across 0–800 mA load while maintaining <15 mV output ripple.
Does TPS62698YFDT support automatic power-down discharge, and how does it function?
Yes, TPS62698YFDT integrates an active power-down sequencing circuit with a 120-Ω internal discharge resistor between VOUT and GND. When EN is pulled low, the device disables switching and activates this resistor, discharging the output capacitor within 100 µs. This prevents floating voltages on downstream logic and eliminates need for external discharge FETs in space-constrained designs.
How does the MODE pin affect EMI performance in TPS62698YFDT?
When MODE is pulled high, TPS62698YFDT enters forced PWM mode with ±10% spread-spectrum dithering centered at 3 MHz. This spreads harmonic energy across a ~600 kHz band, reducing peak conducted EMI by up to 12 dBµV at 9 MHz compared to fixed-frequency operation-critical for passing FCC Part 15 Class B in cellular handsets without added filtering components.
What is the minimum input voltage required for TPS62698YFDT to maintain regulation at full 800 mA load?
The TPS62698YFDT maintains 3.0 V regulation down to VIN = 3.3 V at 800 mA load, as confirmed by Figure 25 (PFM/PWM boundaries) and electrical characteristics table. Below 3.3 V, it enters 100% duty-cycle mode; regulation holds until VIN drops to VOUT + 0.3 V (3.3 V), after which output follows input linearly-ensuring graceful degradation near battery exhaustion.
Can TPS62698YFDT replace a linear regulator in noise-sensitive analog circuits?
Yes, TPS62698YFDT is qualified for LDO replacement in analog sections due to its ≥40 dB PSRR from 1–10 kHz and low 25 mVPP ripple in PFM mode (CO = 10 µF). When paired with a 4.7 µF X5R 0402 output capacitor and operated in forced PWM mode, its spread-spectrum feature further suppresses switching artifacts-making it suitable for powering ADC references and RF synthesizers in portable instruments.
TPS62698YFDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-XFBGA, 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA
TPS62698YFDT FAQ
1.How can I place an order for TPS62698YFDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62698YFDT 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 TPS62698YFDT reliable?
The price and inventory of TPS62698YFDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62698YFDT is usually 5 days.
3.What payment methods are accepted for TPS62698YFDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62698YFDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62698YFDT?
TPS62698YFDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62698YFDT 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 TPS62698YFDT?
For technical support, including TPS62698YFDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62698YFDT requirements.
6.How does Aetrix verify that TPS62698YFDT is sourced from the original manufacturer or authorized distributors?
All TPS62698YFDT 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 TPS62698YFDT meets industry standards.
7.What is the process for return or replacement of TPS62698YFDT?
All TPS62698YFDT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62698YFDT, 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 TPS62698YFDT part is unused and in its original packaging.
Return procedure for TPS62698YFDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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