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Texas Instruments TPS62800YKAT
- Part No.:
- TPS62800YKAT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62800YKAT.pdf
- Description:
- IC REG BUCK ADJ/0.4V 1A 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,342
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Product details
Overview
TPS62800YKAT from Texas Instruments is a 4 MHz, 1 A synchronous step-down DC/DC converter in a 0.35 mm pitch WCSP package, delivering 0.4 V to 0.775 V output with 1% accuracy and 2.3 µA quiescent current - optimized for ultra-low-power wearable and IoT systems powered by 2×AA batteries or single-cell Li-ion.
For engineers reviewing the TPS62800YKAT datasheet, TPS62800YKAT pinout, TPS62800YKAT application, or TPS62800YKAT equivalent, this page delivers verified specifications, DCS-Control topology behavior, R2D-based VOUT configuration, thermal shutdown thresholds, and real-world soft-start timing - all confirmed for the exact YKA-packaged TPS62800 variant.
Technical Context
The TPS62800YKAT implements TI's DCS-Control topology with dual-loop regulation: an AC loop using the VOS pin for fast transient response and low ripple, and a DC voltage feedback loop for precise steady-state regulation. It supports seamless PFM-to-PWM transition without output disturbance.
Its R2D (resistor-to-digital) converter reads a single external resistor on the VSEL/MODE pin during startup to select one of 16 output voltages (0.4–0.775 V in 25-mV steps), then repurposes that pin as a digital MODE input for forced PWM operation - enabling dynamic switching between efficiency-optimized and noise-sensitive modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75 V to 5.5 V - supports direct connection to single-cell Li-ion (2.7–4.2 V), 2×AA alkaline (2.0–3.2 V), or USB-supplied rails without pre-regulation. |
| Output Current | 1 A continuous - sufficient for powering ARM Cortex-M4/M33 microcontrollers, BLE SoCs, and sensor hubs at sub-1 V rails. |
| Quiescent Current | 2.3 µA in power save mode - enables >1-year battery life in always-on wearable sensors with 200 mAh coin cells. |
| Switching Frequency | 4 MHz nominal - allows use of 0.47 µH inductors and <5 mm² total solution size, supporting <0.6 mm profile designs. |
| Output Accuracy | ±1% in PWM mode at 25°C - ensures reliable logic-level compliance for 0.6–0.8 V core supplies in modern ultra-low-voltage ICs. |
| VOUT Setting Method | R2D converter with single E96 1% resistor (10–249 kΩ) - eliminates external feedback divider errors and simplifies BOM across multiple voltage variants. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects against sustained overload in sealed wearable enclosures without airflow. |
Pinout & Package
TPS62800YKAT uses a 6-pin, 0.35 mm pitch DSBGA (WCSP) package measuring 1.05 mm × 0.70 mm - optimized for space-constrained wearables and hearing aids requiring <5 mm² PCB area and <0.6 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Power ground | Primary return path for VIN, SW, and VOS; must be connected near input/output capacitor GND pads to minimize noise coupling. |
| VIN (B1) | Input power supply | Accepts 1.75–5.5 V; requires local 4.7 µF ceramic capacitor placed adjacent to reduce high-frequency switching noise. |
| VSEL/MODE (C1) | Configurable I/O | During startup: reads external resistor for VOUT selection (0.4–0.775 V); after startup: digital input to force PWM mode (high) or power save mode (low). |
| VOS (A2) | Output voltage sense & discharge | Connects directly to output capacitor; enables internal discharge MOSFET when EN = low - prevents floating VOUT during shutdown. |
| SW (B2) | Switch node | Drives external 0.47 µH inductor; requires short, low-inductance trace to minimize EMI and voltage spikes. |
| EN (C2) | Enable control | Active-high with internal 500 kΩ pulldown; transitions cleanly from shutdown (120 nA IQ) to full operation without external pullup. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Combines hysteretic speed and voltage-mode stability - achieves <10 µs load transient response with <10 mV undershoot for 100 mA step loads. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + 0.1 V - extends usable battery range in deep-discharge scenarios (e.g., 0.7 V VOUT from 0.8 V cell). |
| Output discharge via VOS pin | Internal 7–11 Ω discharge switch actively pulls VOUT to GND within 100 µs after EN deactivation - prevents back-powering of downstream circuitry. |
| Smart enable with auto-pulldown disable | Internal 500 kΩ EN pulldown prevents floating start-up, then disconnects after power-up - avoids unintended re-enabling during brownout recovery. |
| Optimized for 0201 passives | Pitch and layout support 0201-size inductors and capacitors - reduces footprint by >30% vs. traditional 0402-based buck solutions. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing in wrist-worn device powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary core supply for ultra-low-power MCU and analog front-end, regulated at 0.6 V with 2.3 µA IQ. Use Value: Enables >18-month battery life while maintaining 100 kHz sampling capability and sub-10 µV RMS noise floor. |
Use Scenario: Battery-powered environmental sensor (temp/humidity/pressure) transmitting data every 5 seconds via BLE. IC Role / Device Role / Timing Role: Efficient 0.7 V rail for Nordic nRF52840 SoC during active transmit bursts and deep-sleep cycles. Use Value: Delivers 1 A peak current for 2 ms RF transmit without droop, while sustaining 2.3 µA sleep IQ to maximize inter-transmit interval. |
| Smart Hearing Aid | Compact Industrial Sensor |
Use Scenario: Miniature in-ear hearing aid with DSP, MEMS mic, and rechargeable micro-LiPo (3.0–4.2 V). IC Role / Device Role / Timing Role: Single-chip 0.65 V core supply with integrated discharge to prevent audio pop during power cycling. Use Value: Achieves <0.6 mm Z-height design with 4 MHz switching - eliminates need for external discharge FET and saves 0.8 mm² PCB area. |
Use Scenario: Wireless vibration sensor mounted on rotating machinery, operating unattended for 5+ years. IC Role / Device Role / Timing Role: Input-stage regulator converting 3.6 V primary battery to stable 0.7 V for ASIC and ADC reference. Use Value: Maintains ±1% VOUT accuracy over –40°C to +85°C and 10-year shelf life - critical for long-term calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62801YKAT | Fixed 1.2 V output or 0.8–1.55 V selectable range; same 4 MHz/1 A specs and YKA package. | Targets 1.2 V I/O or memory rails instead of sub-1 V cores; not suitable for 0.6 V MCU domains. | Select TPS62801YKAT only when system requires ≥0.8 V output - avoids resistor selection complexity while retaining identical layout and thermal performance. |
| TPS62806YKAT | Same 0.4–0.775 V range and R2D interface, but rated for 0.6 A and 1.5 MHz switching. | Lower peak current and reduced switching frequency trade off size/EMI for lower cost in non-performance-critical sensor nodes. | Choose TPS62806YKAT for cost-sensitive, low-current (<400 mA) applications where 4 MHz EMI is problematic - retains pin compatibility but requires larger inductor (0.7–1.2 µH). |
Compared with TPS62801YKAT and TPS62806YKAT, the TPS62800YKAT uniquely delivers 1 A output at 4 MHz within the 0.4–0.775 V range - making it the only option for high-efficiency, space-constrained sub-1 V core supplies demanding both current headroom and minimal footprint.
Availability
TPS62800YKAT is available at Aetrix Electronics and suitable for wearable electronics, IoT edge nodes, and compact medical devices requiring stable component supply, long-lifecycle availability, and guaranteed authentic sourcing from Texas Instruments.
Supply support for TPS62800YKAT 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 high-efficiency DC/DC conversion.
The TPS6280x series was designed specifically for ultra-low-power, space-constrained portable electronics - prioritizing nanoscale packaging, sub-µA quiescent current, and intelligent mode control without sacrificing output accuracy or transient response.
FAQ
What is the maximum output current supported by the TPS62800YKAT?
The TPS62800YKAT supports up to 1 A of continuous output current when VIN ≥ 2.3 V. At lower input voltages (e.g., 1.8 V), the maximum sustainable output current drops to 0.7 A due to MOSFET RDS(ON) limitations and thermal constraints. This rating is validated across –40°C to +125°C junction temperature and applies to both power save and forced PWM modes.
How does the R2D converter in the TPS62800YKAT determine output voltage?
The TPS62800YKAT's R2D converter applies a precision current source to the VSEL/MODE pin during startup, measures the resulting voltage across an external resistor (10–249 kΩ, E96 1%), and selects one of 16 internal feedback dividers to set VOUT from 0.4 V to 0.775 V in 25-mV steps. The conversion completes within the 500–1100 µs startup delay, after which the pin functions as a MODE input.
Does the TPS62800YKAT support 100% duty cycle operation, and under what conditions?
Yes, the TPS62800YKAT supports true 100% duty cycle operation - maintaining regulation when VIN approaches VOUT + 0.1 V. This occurs automatically in PWM mode when the required duty cycle exceeds 95%, allowing uninterrupted operation down to battery voltages as low as 0.75 V for a 0.7 V output - critical for maximizing runtime in coin-cell applications.
What is the purpose of the VOS pin on the TPS62800YKAT, and how must it be connected?
The VOS pin on the TPS62800YKAT serves two roles: (1) it provides the feedback node for the internal voltage divider and regulation loop, and (2) it activates an internal discharge MOSFET when EN = low. It must be connected directly to the output capacitor's positive terminal with the shortest possible trace - no resistors, ferrites, or vias - to ensure accurate regulation and effective discharge within 100 µs.
Can the TPS62800YKAT be used without an external resistor on the VSEL/MODE pin?
Yes - connecting the VSEL/MODE pin directly to GND configures the TPS62800YKAT for its fixed 0.7 V output, eliminating the need for an external resistor. This simplifies BOM and layout for designs requiring only that specific voltage, while retaining all other features including forced PWM mode, output discharge, and DCS-Control performance.
TPS62800YKAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.4V (0.7V)
- Voltage - Output (Max):
- 0.775V
- Current - Output:
- 1A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA (1.05x0.70)
TPS62800YKAT FAQ
1.How can I place an order for TPS62800YKAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62800YKAT 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 TPS62800YKAT reliable?
The price and inventory of TPS62800YKAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62800YKAT is usually 5 days.
3.What payment methods are accepted for TPS62800YKAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62800YKAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62800YKAT?
TPS62800YKAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62800YKAT 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 TPS62800YKAT?
For technical support, including TPS62800YKAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62800YKAT requirements.
6.How does Aetrix verify that TPS62800YKAT is sourced from the original manufacturer or authorized distributors?
All TPS62800YKAT 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 TPS62800YKAT meets industry standards.
7.What is the process for return or replacement of TPS62800YKAT?
All TPS62800YKAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62800YKAT, 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 TPS62800YKAT part is unused and in its original packaging.
Return procedure for TPS62800YKAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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