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Texas Instruments TPS62615YFDT
- Part No.:
- TPS62615YFDT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62615YFDT.pdf
- Description:
- IC REG BUCK 1.2V 350MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,315
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Product details
Overview
TPS62615YFDT from Texas Instruments is a 350-mA, 6-MHz synchronous step-down DC-DC converter in a 6-pin NanoFree™ CSP package (0.4 mm max height), delivering 1.2 V output with ±2% DC accuracy, 90% peak efficiency, and 31 µA quiescent current. It operates from 2.3 V to 5.5 V input and supports automatic PFM/PWM mode switching for battery-powered portable devices including smartphones and Bluetooth modules.
For engineers reviewing the TPS62615YFDT datasheet, TPS62615YFDT pinout, TPS62615YFDT application, or TPS62615YFDT equivalent, key selection criteria include its ultra-thin CSP-6 footprint, 6-MHz regulated switching frequency, integrated soft-start (100-ms startup), active power-down sequencing, and >50 dB PSRR at 1–10 kHz - all critical for space-constrained, noise-sensitive, low-power embedded systems.
Technical Context
The TPS62615YFDT uses a frequency-locked ring oscillator modulator architecture-eliminating traditional compensation loops-to achieve instantaneous transient response and inherent stability across varied inductor/capacitor values. Its non-linear control enables best-in-class load/line regulation without external compensation.
It integrates P-channel (270 mΩ typical @ 3.6 V) and N-channel (140 mΩ typical @ 3.6 V) MOSFETs, supports automatic PFM mode below ~10 mA load (31 µA IQ), and enters forced PWM mode when MODE pin is high-enabling fixed-frequency operation for EMI-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V with ±2% total DC accuracy over line/load/temperature - ensures stable core voltage for low-voltage microcontrollers. |
| Max Output Current | 350 mA continuous - sufficient for powering RF transceivers, sensor hubs, or application processors in compact handheld devices. |
| Switching Frequency | Regulated 6 MHz (5.4–6.6 MHz range) - enables use of sub-1-µH chip inductors and 0402 ceramic capacitors for <10 mm² solution size. |
| Quiescent Current | 31 µA in PFM mode - extends battery life in always-on, low-duty-cycle IoT endpoints and wearable sensors. |
| Input Voltage Range | 2.3 V to 5.5 V - compatible with single-cell Li-ion (2.7–4.2 V), Li-polymer, or dual-cell alkaline batteries across full discharge curve. |
| PSRR | >50 dB from 1 kHz to 10 kHz - suppresses ripple from noisy shared power rails, critical for analog/RF subsystems. |
| Startup Time | 96 ms with internal soft-start - prevents inrush current and input voltage sag during cold boot from weak battery sources. |
Pinout & Package
Package: 6-pin NanoFree™ Chip Scale Package (CSP-YFD), 0.4 mm maximum height, 0.8 mm × 0.8 mm body, 0.4 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (C1) | Feedback sense input | Connects directly to VOUT to regulate 1.2 V output; internal resistor divider sets reference - no external resistors required. |
| VIN (A2) | Power input | Accepts 2.3–5.5 V supply; feeds internal bias circuitry and high-side switch - requires local 4.7 µF ceramic decoupling. |
| SW (B1) | Switch node | Drain connection of internal P/N-MOSFETs; drives external 0.47 µH inductor - must be routed with minimal loop area for EMI control. |
| MODE (A1) | Mode selection control | Pull low for auto PFM/PWM; pull high for forced PWM - enables dynamic noise-performance trade-off in real-time system operation. |
| EN (B2) | Enable input | Active-high logic; <0.4 V disables device (0.2 µA shutdown current); >1.0 V enables - supports sequenced power-up in multi-rail systems. |
| GND (C2) | Ground reference | Power and signal ground return; must be connected to low-impedance PCB plane beneath CSP thermal pad for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile solution | Total height <0.4 mm with 0603 inductor and two 0402 capacitors - enables integration into <1 mm-thick mobile device stacks. |
| Automatic PFM/PWM transition | Seamless mode switching at ~10 mA load - maintains >85% efficiency from 10 µA to 350 mA without external intervention. |
| Integrated active discharge | 15 Ω internal resistor discharges VOUT on shutdown - prevents floating rail issues and enables fast power-state transitions in sleep/wake cycles. |
| High PSRR at audio band | >50 dB rejection from 1–10 kHz - preserves signal integrity in audio codecs, touch controllers, and precision ADCs sharing same LDO rail. |
| Thermal shutdown protection | 140 °C trip with 10 °C hysteresis - safeguards against sustained overload or poor PCB thermal design in sealed enclosures. |
Applications
| Smartphone Application Processor Core | Bluetooth Low Energy Module Power |
|---|---|
Use Scenario: Powers ARM Cortex-M4/M0+ cores in entry-level smartphones requiring 1.2 V @ ≤300 mA with tight voltage tolerance. IC Role / Device Role / Timing Role: Primary buck regulator supplying CPU core rail; delivers regulated 1.2 V with ±2% DC accuracy and <20 mVPP ripple in PFM mode. Use Value: Enables 350-mA peak current delivery within 0.4-mm height constraint while maintaining >88% efficiency at 10 mA standby load - extending talk time by 12% vs. legacy LDO solutions. | Use Scenario: Supplies 1.2 V to BLE SoCs (e.g., CC2640R2F) in wearables where burst transmit current reaches 250 mA and sleep current is <1 µA. IC Role / Device Role / Timing Role: System PMIC buck stage; provides fast load transient response (<10 µs recovery) and automatic PFM entry below 5 mA. Use Value: Achieves 31 µA quiescent current and 90% peak efficiency - reducing average system power by 45% compared to discrete buck + LDO architectures. |
| GPS/GLONASS Front-End Bias | IoT Sensor Hub Power Rail |
Use Scenario: Powers GPS RF front-end ICs (e.g., MAX2769) requiring clean, low-noise 1.2 V supply with minimal spurious content. IC Role / Device Role / Timing Role: Noise-optimized buck converter; supports forced PWM mode via MODE pin to eliminate PFM switching artifacts near 1.575 GHz GPS band. Use Value: Delivers >50 dB PSRR at 1–10 kHz and <22 mVPP ripple in PFM mode - preventing baseband interference and improving C/N₀ by 3 dB in weak-signal conditions. | Use Scenario: Supplies 1.2 V to multi-sensor fusion hubs (accelerometer, gyroscope, magnetometer) in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Primary system rail regulator; handles dynamic load steps from 10 µA (sleep) to 200 mA (sensor burst readout) with <1% droop. Use Value: Uses frequency-locked modulator architecture for zero-compensation stability - eliminating need for external compensation components and reducing BOM count by 3 parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62612YFDT | Fixed 1.5 V output; identical package, pinout, and electrical specs except output voltage and FB divider ratio. | Used where 1.5 V logic or I/O rail is required instead of 1.2 V core rail - no change to layout or external components needed. | Select when system requires 1.5 V instead of 1.2 V; drop-in replacement with only output voltage difference. |
| TPS62619YFDT | Fixed 1.8 V output; same CSP-6 package, timing, and efficiency characteristics; rDS(on) optimized for higher VIN-to-VOUT ratios. | Suitable for powering 1.8 V I/O domains or RF amplifiers; higher dropout margin allows stable operation down to 2.5 V input. | Choose for 1.8 V applications needing identical form factor and thermal profile - verify load transient behavior matches 1.2 V variant. |
Compared with TPS62612YFDT and TPS62619YFDT, the TPS62615YFDT provides optimal voltage matching for 1.2 V processor cores and low-power logic, offering identical ultra-thin packaging and 6-MHz operation while minimizing board space and thermal overhead in space-constrained portable designs.
Availability
TPS62615YFDT is available at Aetrix Electronics and suitable for smartphone power management, BLE module design, GPS front-end biasing, and IoT sensor hub applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS62615YFDT 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.
The TPS6261x product line was designed specifically for ultra-thin, battery-powered portable electronics - prioritizing sub-0.4-mm solution height, 6-MHz high-frequency operation, and automatic light-load efficiency optimization without sacrificing transient response or DC accuracy.
FAQ
What is the output voltage of the TPS62615YFDT?
The TPS62615YFDT provides a fixed 1.2 V output voltage with ±2% total DC accuracy over input voltage, load current, and temperature. This is achieved via an internal resistor divider connected to the FB pin - no external feedback resistors are required. The output remains stable across 2.3 V to 5.5 V input and up to 350 mA load, making it ideal for powering low-voltage microcontroller cores and digital logic rails.
Does the TPS62615YFDT require external compensation components?
No, the TPS62615YFDT does not require external compensation components. Its frequency-locked ring oscillator modulator architecture eliminates the need for traditional loop compensation, providing inherent stability across a wide range of inductor and output capacitor values. This simplifies design, reduces BOM count, and enables reliable operation with standard 0.47 µH inductors and 4.7 µF ceramic capacitors without tuning.
How does the MODE pin affect TPS62615YFDT operation?
The MODE pin on the TPS62615YFDT selects between two operating modes: pulling MODE low enables automatic PFM/PWM mode switching for maximum light-load efficiency, while pulling MODE high forces fixed-frequency PWM operation to reduce switching noise. This allows system designers to dynamically optimize between battery life and EMI performance - for example, enabling PWM during RF transmission and reverting to PFM during idle periods.
What is the shutdown current of the TPS62615YFDT?
The TPS62615YFDT draws 0.2 µA typical shutdown current when the EN pin is pulled low. In this state, both internal P-channel and N-channel MOSFETs are turned off, the feedback divider is disconnected, and all internal control circuitry is powered down. This ultra-low shutdown current minimizes battery drain in always-connected IoT devices and supports rapid wake-up without significant voltage sag on the input rail.
Can the TPS62615YFDT actively discharge its output capacitor?
Yes, the TPS62615YFDT includes an integrated 15 Ω active discharge resistor that safely bleeds the output capacitor when the device is disabled. This prevents the VOUT rail from remaining floating or slowly decaying after shutdown - ensuring predictable power sequencing in multi-rail systems and avoiding latch-up or undefined states in downstream logic. Discharge time depends on output capacitance and load but typically falls within 1–10 ms for standard 4.7 µF ceramic outputs.
TPS62615YFDT 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 350mA
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA
TPS62615YFDT FAQ
1.How can I place an order for TPS62615YFDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62615YFDT 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 TPS62615YFDT reliable?
The price and inventory of TPS62615YFDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62615YFDT is usually 5 days.
3.What payment methods are accepted for TPS62615YFDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62615YFDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62615YFDT?
TPS62615YFDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62615YFDT 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 TPS62615YFDT?
For technical support, including TPS62615YFDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62615YFDT requirements.
6.How does Aetrix verify that TPS62615YFDT is sourced from the original manufacturer or authorized distributors?
All TPS62615YFDT 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 TPS62615YFDT meets industry standards.
7.What is the process for return or replacement of TPS62615YFDT?
All TPS62615YFDT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62615YFDT, 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 TPS62615YFDT part is unused and in its original packaging.
Return procedure for TPS62615YFDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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