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Texas Instruments TPS62679ZYFMT
- Part No.:
- TPS62679ZYFMT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFLGA, DSLGA
- Datasheet:
-
TPS62679ZYFMT.pdf
- Description:
- IC REG BUCK 1.26V 500MA 6DSLGA
- Quantity:
- Payment:
- Shipping:
Inventory:615
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Product details
Overview
TPS62679ZYFMT from Texas Instruments is a high-frequency synchronous step-down DC-DC converter in PicoStar™ 6-pin CSP packaging (1.22 mm × 0.85 mm, height < 0.4 mm), delivering 1.26 V at up to 500 mA output current with 6 MHz regulated switching frequency, ±2% total DC voltage accuracy, and 17 µA quiescent current in PFM mode - optimized for Li-ion-powered mobile applications including CMOS camera modules and Bluetooth/WLAN subsystems.
For engineers reviewing the TPS62679ZYFMT datasheet, TPS62679ZYFMT pinout, TPS62679ZYFMT application, or TPS62679ZYFMT equivalent, key selection criteria include its extended start-up time (430 µs), output discharge capability, PWM spread spectrum modulation for EMI reduction, and compatibility with ultra-low-profile external components (0603 inductor, 0402 capacitors) in sub-10 mm² total solution size.
Technical Context
The TPS62679ZYFMT employs a frequency-locked ring-oscillating modulator architecture-eliminating traditional compensation loops-to achieve instantaneous transient response and support miniature passive components. It operates in regulated 6 MHz PWM mode under heavy load and transitions to low-quiescent-current PFM mode at light loads (e.g., 1 mA).
Its MODE pin enables forced PWM (low-noise mode) or auto PFM/PWM operation; EN supports logic-level enable and external clock presence detection (4–27 MHz); integrated P/N-channel MOSFETs feature rDS(on) of 170 mΩ (P-ch) and 120 mΩ (N-ch) at 3.6 V, with 70–150 Ω output discharge resistance for controlled power-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.26 V with ±2% total DC accuracy across 2.3–4.8 V input and 0–500 mA load - ensures stable core supply for low-voltage digital ICs. |
| Switching Frequency | Regulated 4.9–6.0 MHz (PWM mode) - enables use of sub-1 µH chip inductors and reduces output ripple without increasing filter size. |
| Quiescent Current | 17 µA typical in PFM mode - extends battery life in standby/sleep states of portable devices. |
| Efficiency | Up to 92% at 6 MHz operation - exceeds linear regulators in power-constrained systems while maintaining low thermal footprint. |
| Input Voltage Range | 2.3 V to 4.8 V - fully supports single-cell Li-ion batteries across full discharge curve (including extended-range chemistries). |
| Start-up Time | 430 µs (from EXTCLK active to VOUT regulation) - meets timing requirements for fast-wake applications like camera autofocus sequencing. |
| PSRR | ≥35 dB from 1 kHz to 10 kHz - suppresses noise coupling from noisy system rails into sensitive analog/RF blocks. |
Pinout & Package
PicoStar™ (6-pin CSP), 1.22 mm × 0.85 mm body, maximum height 0.4 mm - designed for ultra-thin mobile PCBs with minimal Z-height impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback sense input | Connects directly to VOUT; sets regulation point via internal 1.26 V reference - no external resistor divider required. |
| VIN | Power supply input | Accepts 2.3–4.8 V; feeds internal bias circuitry and high-side switch - requires local 2.2 µF ceramic decoupling. |
| SW | Switch node | Drain connection of internal P/N-MOSFET pair - interfaces with external 0.47–1.8 µH inductor and output capacitor. |
| MODE | Mode selection control | Pull low for auto PFM/PWM; pull high for forced PWM - enables noise-sensitive or deterministic timing applications. |
| EN | Enable input | Logic-compatible enable with 1.26 V VIH threshold; supports external clock detect (4–27 MHz) for synchronized startup. |
| GND | Ground reference | Primary return path for power and signal currents - must be connected to solid ground plane beneath CSP pad array. |
Key Features
| Feature | Design Value |
|---|---|
| Spread spectrum PWM | Reduces peak EMI by dithering switching frequency - simplifies compliance with FCC/CE radiated emission limits in compact layouts. |
| Output discharge | 70–150 Ω internal discharge path - ensures rapid VOUT collapse during shutdown, preventing back-powering of downstream circuits. |
| Ultra-low profile solution | Total height < 0.33 mm with 0603 inductor and 0402 capacitors - enables integration into < 1 mm-thick smartphone camera modules. |
| Best-in-class transients | No traditional feedback loop; ring-oscillator architecture delivers immediate response to load steps - eliminates need for large output capacitance. |
| Three-component design | Requires only one inductor and two ceramic capacitors - reduces BOM count, board area (<10 mm²), and assembly cost vs. conventional buck controllers. |
Applications
| CMOS Camera Module Power | Bluetooth/WLAN RF Subsystem |
|---|---|
Use Scenario: Powers image sensor and ISP core logic in smartphone front/rear cameras requiring fast wake-from-sleep and low-noise supply. IC Role / Device Role / Timing Role: Primary 1.26 V core regulator with 430 µs start-up and output discharge for clean power sequencing. Use Value: Enables rapid autofocus activation and eliminates residual voltage hold-up that causes sensor initialization errors. |
Use Scenario: Supplies 1.26 V to Bluetooth baseband and WLAN transceiver ICs in portable hotspots and wearables. IC Role / Device Role / Timing Role: Noise-suppressed buck converter operating in forced PWM mode during packet transmission bursts. Use Value: ≥35 dB PSRR at 1–10 kHz prevents digital switching noise from degrading RF receiver sensitivity (e.g., -90 dBm RSSI). |
| Li-ion Battery-Powered MCU Core | Optical Data Module Supply |
Use Scenario: Delivers regulated 1.26 V to ultra-low-power microcontrollers (e.g., ARM Cortex-M0+) in medical sensors and IoT edge nodes. IC Role / Device Role / Timing Role: High-efficiency step-down regulator with 17 µA quiescent current in PFM mode for multi-year battery life. Use Value: Extends shelf life and operational runtime in coin-cell or small Li-ion powered devices without sacrificing wake-up responsiveness. |
Use Scenario: Provides stable 1.26 V to VCSEL drivers and photodiode amplifiers in proximity/gesture sensing modules. IC Role / Device Role / Timing Role: Low-ripple, low-noise power source with <16 mVPP ripple at 1 mA load in PFM mode. Use Value: Minimizes optical signal noise floor, improving SNR in ambient-light-resistant proximity detection (e.g., >10 cm range). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62674YFD | Same 1.26 V output and PicoStar package, but lacks extended start-up time; includes output discharge and PWM-only operation. | Preferred where deterministic 125 µs start-up is required instead of extended timing; suitable for non-camera real-time control. | Select TPS62674YFD when faster startup and guaranteed PWM-only behavior outweigh need for clock-detect-enabled sequencing. |
| TPS626751YFD | 1.2 V fixed output (not 1.26 V), same PicoStar package, includes output discharge and PWM spread spectrum. | Used where system SoC or ASIC requires precisely 1.2 V core voltage instead of 1.26 V - not interchangeable without voltage validation. | Choose TPS626751YFD only if target load mandates 1.2 V; verify compatibility with load's VDD tolerance before substitution. |
Compared with TPS62679ZYFMT, TPS62674YFD offers faster startup but no clock-detect enable, while TPS626751YFD provides 1.2 V output with identical features except voltage level - neither is pin-compatible drop-in replacement due to distinct enable timing and output voltage mismatch.
Availability
TPS62679ZYFMT is available at Aetrix Electronics and suitable for CMOS camera modules, Bluetooth/WLAN subsystems, and optical data modules requiring stable component supply with guaranteed long-term manufacturability and consistent electrical performance.
Supply support for TPS62679ZYFMT 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 over 50 years of innovation in energy-efficient power conversion.
The TPS6267x family was engineered specifically for space-constrained, battery-powered mobile devices - emphasizing ultra-low profile, high efficiency at light loads, and EMI-conscious design for integration into smartphones, tablets, and wearable electronics.
FAQ
What is the output voltage and tolerance of the TPS62679ZYFMT?
The TPS62679ZYFMT provides a fixed 1.26 V output with ±2% total DC voltage accuracy across input voltages from 2.3 V to 4.8 V and load currents from 0 mA to 500 mA. This specification includes line, load, and temperature variation - confirmed in the Electrical Characteristics table of the SLVS952G datasheet.
Does the TPS62679ZYFMT support external clock synchronization?
Yes, the TPS62679ZYFMT supports external clock presence detection on the EN pin within 4 MHz to 27 MHz frequency range and 40–60% duty cycle. When an external clock is detected, the device automatically powers up and synchronizes its switching frequency - a feature explicitly documented in the Electrical Characteristics section for TPS62679.
What is the start-up time of the TPS62679ZYFMT, and how is it measured?
The TPS62679ZYFMT has a start-up time of 430 µs, defined as the interval from active EXTCLK signal to VOUT reaching regulation. This value is measured with L = 1 µH (TY CKP1608S1R0), CO = 2.2 µF (TY AMK105BJ225MP), and is specified in the TIMING subsection of the Electrical Characteristics table.
Does the TPS62679ZYFMT include output discharge functionality?
Yes, the TPS62679ZYFMT integrates an output discharge path with a resistance of 70–150 Ω. This feature actively pulls VOUT to GND during shutdown, preventing residual voltage from interfering with downstream logic or causing latch-up - confirmed in the POWER SWITCH section of the datasheet.
What package type and dimensions does the TPS62679ZYFMT use?
The TPS62679ZYFMT uses the PicoStar™ package: a 6-pin chip-scale package measuring 1.22 mm × 0.85 mm with maximum height of 0.4 mm. This is distinct from the DSBGA-6 used by other TPS6267x variants and is explicitly listed in the Device Information table of the SLVS952G datasheet.
TPS62679ZYFMT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-XFLGA, DSLGA
- 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):
- 1.26V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 5.45MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSLGA
TPS62679ZYFMT FAQ
1.How can I place an order for TPS62679ZYFMT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62679ZYFMT 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 TPS62679ZYFMT reliable?
The price and inventory of TPS62679ZYFMT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62679ZYFMT is usually 5 days.
3.What payment methods are accepted for TPS62679ZYFMT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62679ZYFMT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62679ZYFMT?
TPS62679ZYFMT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62679ZYFMT 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 TPS62679ZYFMT?
For technical support, including TPS62679ZYFMT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62679ZYFMT requirements.
6.How does Aetrix verify that TPS62679ZYFMT is sourced from the original manufacturer or authorized distributors?
All TPS62679ZYFMT 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 TPS62679ZYFMT meets industry standards.
7.What is the process for return or replacement of TPS62679ZYFMT?
All TPS62679ZYFMT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62679ZYFMT, 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 TPS62679ZYFMT part is unused and in its original packaging.
Return procedure for TPS62679ZYFMT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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