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Texas Instruments TPS62674YFDT
- Part No.:
- TPS62674YFDT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62674YFDT.pdf
- Description:
- IC REG BUCK 1.26V 500MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:740
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Product details
Overview
TPS62674YFDT from Texas Instruments is a 6-MHz synchronous step-down DC-DC converter in NanoFree™ DSBGA-6 packaging (1.22 mm × 0.85 mm, height < 0.4 mm), delivering 1.26 V at up to 500 mA output current from a 2.3 V–4.8 V input. It features PWM-only operation mode, output discharge function, and 17 µA quiescent current in PFM mode-optimized for ultra-thin mobile power rails including CMOS camera modules and optical data modules.
For engineers reviewing the TPS62674YFDT datasheet, TPS62674YFDT pinout, TPS62674YFDT application, or TPS62674YFDT equivalent, key selection criteria include its fixed 1.26 V output, forced-PWM-only operation (no auto PFM/PWM transition), integrated output discharge resistor (70–150 Ω), ±2% total DC voltage accuracy, and compatibility with 0603 inductors and 0402 ceramic capacitors in sub-10 mm² layouts.
Technical Context
The TPS62674YFDT uses a frequency-locked ring-oscillating modulator architecture-eliminating traditional error amplifiers and compensation networks-to achieve instantaneous load/line transient response. Its MODE pin is hard-wired to force continuous PWM operation, disabling automatic PFM entry and ensuring deterministic 4.9–6.0 MHz switching frequency across input and load conditions.
This device integrates both high-side (170 mΩ typical rDS(on) at 3.6 V) and low-side (120 mΩ typical rDS(on) at 3.6 V) synchronous MOSFETs, supports external clock presence detection (4–27 MHz), and includes thermal shutdown (140 °C) with 10 °C hysteresis-enabling robust, low-noise point-of-load regulation in space-constrained battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.26 V with ±2% total DC accuracy over temperature, line, and load-ensures stable core supply for low-voltage processors and sensors. |
| Max Output Current | 500 mA-supports mid-power digital subsystems such as image signal processors and RF front-end bias rails. |
| Input Voltage Range | 2.3 V to 4.8 V-fully compatible with single-cell Li-ion batteries across full discharge curve (including extended 2.3 V cutoff). |
| Switching Frequency | 4.9–6.0 MHz (PWM-only)-enables use of sub-1 µH chip inductors and minimizes output ripple without requiring large bulk capacitance. |
| Quiescent Current | 17 µA (typical, PFM mode)-extends battery life in standby/sleep states while maintaining fast wake-up capability. |
| Output Discharge | Integrated 70–150 Ω discharge path-actively pulls VOUT to GND during shutdown, preventing floating outputs and enabling clean power sequencing. |
| PSRR | ≥35 dB (1 kHz–10 kHz)-rejects noise from noisy shared battery rails, critical for analog/RF sections powered from same source. |
Pinout & Package
TPS62674YFDT is housed in a 6-pin NanoFree™ DSBGA package (1.22 mm × 0.85 mm, 0.4 mm max height), optimized for ultra-low-profile mobile PCBs. The bottom-side ball layout matches standard CSP-6 footprint with 0.4 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (C1) | Feedback sense input | Direct connection to regulated output; sets 1.26 V via internal resistor divider-no external resistors required. |
| VIN (A2) | Power input | Accepts 2.3–4.8 V; requires local 2.2 µF ceramic decoupling (0402) placed adjacent to pin for EMI suppression. |
| SW (B1) | Switch node | Connects to inductor; carries high di/dt switching current-requires tight loop routing and ground plane underneath. |
| MODE (A1) | Mode control input | Hard-wired HIGH to force continuous PWM operation (no PFM); must not be left floating-terminate to VIN or logic HIGH. |
| EN (B2) | Enable input | Active-HIGH enable (VIH = 1.26 V min); supports external clock presence detection (4–27 MHz) for auto-wake functionality. |
| GND (C2) | Ground reference | Primary return path for power and control circuits; requires direct connection to solid ground plane under package. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-only operation mode | Eliminates PFM/PWM boundary artifacts and output voltage jumps-ensures consistent EMI profile and predictable timing in noise-sensitive applications. |
| Integrated output discharge | 70–150 Ω on-chip resistor actively discharges VOUT during shutdown-removes need for external discharge FET or resistor network. |
| Spread-spectrum modulation (SSM) | Reduces peak radiated emissions by dithering switching frequency-meets stringent CISPR-22 Class B conducted/emission limits in compact layouts. |
| Ultra-thin NanoFree™ packaging | 0.4 mm max height enables placement under displays or beneath stacked PCBs-critical for modern smartphone and wearable form factors. |
| Three external components | Only one 0603 inductor + two 0402 MLCCs required-minimizes BOM count, board area (<10 mm²), and assembly cost. |
Applications
| CMOS Camera Module Power | Optical Data Module Bias |
|---|---|
Use Scenario: Powers image sensor and ISP core logic in smartphone rear/front cameras during active capture and preview modes. IC Role / Device Role / Timing Role: Primary 1.26 V core regulator delivering up to 500 mA with <130 µs startup time and <2% DC accuracy. Use Value: Enables fast frame-rate operation and low-noise analog performance via ≥35 dB PSRR and spread-spectrum EMI reduction. |
Use Scenario: Supplies bias voltage to VCSEL drivers and photodiode amplifiers in short-range optical sensing (e.g., proximity, gesture, ToF). IC Role / Device Role / Timing Role: Low-ripple, fast-transient point-of-load regulator supporting burst-mode operation with microsecond-level load steps. Use Value: Maintains signal integrity through 16 mVPP ripple at 1 mA and instantaneous load-step response-critical for SNR-sensitive optical measurements. |
| WLAN/Bluetooth™ RF Subsystem | Embedded Microcontroller Core Rail |
Use Scenario: Provides clean 1.26 V supply to WLAN/BT combo IC baseband and RF sections in portable IoT devices. IC Role / Device Role / Timing Role: Noise-isolated power rail with ≥35 dB PSRR (1–10 kHz) and forced-PWM operation to avoid interference with 2.4 GHz/5 GHz bands. Use Value: Reduces conducted EMI coupling into RF paths-verified via spurious noise plots showing <−70 dBm peaks in 1–10 MHz band. |
Use Scenario: Powers ARM Cortex-M series MCU cores in wearables and medical sensors requiring reliable low-voltage operation across battery discharge. IC Role / Device Role / Timing Role: Primary core regulator with 2.3–4.8 V input range, 17 µA quiescent current, and output discharge for safe reset sequencing. Use Value: Extends runtime in sleep mode while ensuring deterministic power-down behavior-eliminates risk of latch-up from floating VOUT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62672YFD | Fixed 1.5 V output; identical PWM/SSM architecture and package-but lacks output discharge function. | Suitable for non-sequencing 1.5 V rails where fast VOUT decay is unnecessary (e.g., standalone logic supplies). | Select when 1.5 V output matches system requirements and discharge is handled externally or not needed. |
| TPS62675YFD | Fixed 1.2 V output; includes PWM SSM and output discharge-but rated for 650 mA max output current. | Better suited for higher-current 1.2 V domains (e.g., SoC I/O or DDR termination), with same footprint and pinout. | Choose when higher load current (up to 650 mA) and 1.2 V output are required-pin-compatible upgrade path. |
Compared with TPS62674YFDT, TPS62672YFD offers higher output voltage but no discharge, while TPS62675YFD provides lower voltage, higher current, and full functional equivalence-making it the preferred drop-in alternative for 1.2 V designs needing >500 mA.
Availability
TPS62674YFDT is available at Aetrix Electronics and suitable for CMOS camera modules, optical data modules, and embedded microcontroller core rails requiring stable component supply, long-term lifecycle support, and ultra-low-profile packaging.
Supply support for TPS62674YFDT 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 TPS6267x family was designed specifically for ultra-thin, battery-powered mobile applications-including smartphones, wearables, and optical sensors-where minimal height, high efficiency at light loads, and low EMI are mandatory.
FAQ
What is the output voltage of the TPS62674YFDT?
The TPS62674YFDT delivers a fixed 1.26 V output with ±2% total DC voltage accuracy across input voltage (2.3 V–4.8 V), load (0–500 mA), and temperature (–40 °C to +85 °C). This value is factory-trimmed and requires no external feedback resistors-simplifying design and improving long-term stability.
Does the TPS62674YFDT support automatic PFM/PWM mode switching?
No-the TPS62674YFDT operates in forced PWM-only mode. Unlike other variants in the TPS6267x family, it disables automatic PFM entry regardless of load current. This ensures constant 4.9–6.0 MHz switching frequency, eliminating audible noise and simplifying EMI filtering.
What is the purpose of the MODE pin on the TPS62674YFDT?
The MODE pin on the TPS62674YFDT must be held HIGH to enforce continuous PWM operation. It is not configurable for auto PFM/PWM transition. Leaving this pin unconnected or pulled LOW violates recommended operating conditions and may cause undefined behavior or failure to regulate.
How does the output discharge function work in the TPS62674YFDT?
The TPS62674YFDT integrates an internal 70–150 Ω discharge resistor between VOUT and GND that activates automatically when EN is deasserted. This rapidly discharges the output capacitor-preventing residual voltage from interfering with downstream logic states or causing improper reset sequencing in multi-rail systems.
Can the TPS62674YFDT be used with a 0.47 µH inductor?
Yes-the TPS62674YFDT supports inductors from 0.3 µH to 1.8 µH per datasheet Section 8.3. A 0.47 µH chip inductor (e.g., Murata LQM21PN471M80) is within specification and commonly used to balance size, efficiency, and transient response for 500 mA loads at 1.26 V.
TPS62674YFDT 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):
- 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-DSBGA
TPS62674YFDT FAQ
1.How can I place an order for TPS62674YFDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62674YFDT 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 TPS62674YFDT reliable?
The price and inventory of TPS62674YFDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62674YFDT is usually 5 days.
3.What payment methods are accepted for TPS62674YFDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62674YFDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62674YFDT?
TPS62674YFDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62674YFDT 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 TPS62674YFDT?
For technical support, including TPS62674YFDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62674YFDT requirements.
6.How does Aetrix verify that TPS62674YFDT is sourced from the original manufacturer or authorized distributors?
All TPS62674YFDT 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 TPS62674YFDT meets industry standards.
7.What is the process for return or replacement of TPS62674YFDT?
All TPS62674YFDT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62674YFDT, 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 TPS62674YFDT part is unused and in its original packaging.
Return procedure for TPS62674YFDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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