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Texas Instruments TPS62808YKAT
- Part No.:
- TPS62808YKAT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62808YKAT.pdf
- Description:
- IC REG BCK ADJ/1.8V 600MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,002
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Product details
Overview
TPS62808YKAT from Texas Instruments is a 1.5 MHz synchronous step-down DC-DC converter optimized for ultra-low-power wearable and IoT applications, delivering up to 0.6 A output current with 2.3 µA quiescent current in power save mode, 1.8 V to 3.3 V selectable output voltage range (100-mV steps), and DCS-Control topology for fast transient response and high light-load efficiency.
For engineers reviewing the TPS62808YKAT datasheet, TPS62808YKAT pinout, TPS62808YKAT application, or TPS62808YKAT equivalent, this device supports compact <5 mm² designs using 0201 passives, offers R2D-based flexible VOUT configuration via single external resistor, and enables seamless PFM-to-PWM transition without output voltage ripple penalty.
Technical Context
The TPS62808YKAT implements TI's DCS-Control topology with dual-loop regulation: an AC loop sensing VOS for immediate transient response and a DC voltage feedback loop for precise steady-state regulation. It integrates a resistor-to-digital (R2D) converter that reads an external E96-series resistor on VSEL/MODE to select one of 16 output voltages within 1.8–3.3 V.
It operates in three functional modes: power save (PFM) at light loads for 2.3 µA IQ, forced PWM (constant 1.5 MHz) for noise-sensitive systems, and 100% duty cycle operation near VIN ≈ VOUT. Output discharge is enabled via internal MOSFET connected to VOS, active after first enable and requiring VIN > 1.7 V to function.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75 V to 5.5 V - supports 2×AA, Li-ion, and USB-powered systems without external LDO pre-regulation. |
| Output Current | 0.6 A - sufficient for low-power microcontrollers, sensors, and BLE radios in space-constrained designs. |
| Quiescent Current | 2.3 µA (power save mode) - extends battery life in always-on wearable and sensor nodes. |
| Switching Frequency | 1.5 MHz (forced PWM) - enables use of sub-1 µH inductors and reduces EMI filtering complexity. |
| Output Voltage Accuracy | ±1% (PWM mode, 25°C) - ensures stable supply for precision analog and RF circuitry without external trimming. |
| Package | 6-pin WCSP (YKA), 0.35 mm pitch, 1.05 mm × 0.70 mm - supports <0.6 mm board height and <5 mm² total solution size. |
| Thermal Resistance | RθJA = 147.7 °C/W - requires minimal PCB copper for thermal management in thin-profile wearables. |
Pinout & Package
TPS62808YKAT is housed in a 6-pin, 0.35 mm pitch wafer-chip-scale package (WCSP, YKA) measuring 1.05 mm × 0.70 mm, designed for ultra-thin (<0.6 mm) and area-constrained PCBs. Its optimized pinout supports 0201-size passive placement and minimizes trace inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Power ground | Primary return path for input/output capacitors; must be connected near CIN/COUT pads to minimize noise coupling. |
| VIN | 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 | Configurable I/O | During startup: sets VOUT via R2D conversion (16 options, 1.8–3.3 V); post-startup: selects power save (low) or forced PWM (high). |
| VOS | Output voltage sense & discharge | Direct connection to COUT enables accurate regulation; internal MOSFET discharges VOUT when EN = low (after first enable). |
| SW | Switch node | Connects to inductor; carries high di/dt; requires short, wide trace and tight SW–GND loop to limit EMI. |
| EN | Enable control | Active-high with internal 500 kΩ pulldown; monotonic VIH/VIL transition required to prevent false enable/disable. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Combines hysteretic speed and voltage-mode stability-enables <10 µs load transient recovery with <10 mV undershoot using 0.47 µH inductor and 10 µF COUT. |
| R2D output voltage selection | Single E96 1% resistor (10–249 kΩ) replaces full external feedback divider-improves VOUT accuracy vs. resistor ratio drift and saves PCB area. |
| Smart enable with pulldown | Internal 500 kΩ EN pulldown prevents floating start-up; automatically disconnects after power-up to avoid leakage during active operation. |
| Output discharge via VOS | Internal MOSFET actively pulls VOUT to GND when disabled-ensures clean power-down sequencing for downstream logic and eliminates hold-up voltage issues. |
| 100% duty cycle operation | Maintains regulation down to VIN – VOUT < 200 mV-supports brown-out tolerance in battery-depleted states without rail collapse. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Compact wrist-worn pulse oximeter with optical sensor, MCU, and BLE radio operating from coin cell or rechargeable LiPo. IC Role / Device Role / Timing Role: Primary power regulator supplying 1.8 V to MCU core and 3.3 V to analog front-end and BLE transceiver via resistor-selectable outputs. Use Value: 2.3 µA IQ extends battery life beyond 6 months; 1.5 MHz switching allows 0.7 µH inductor and 4.7 µF input cap, enabling <4.5 mm² total BOM footprint. |
Use Scenario: Battery-powered environmental sensor (temp/humidity/pressure) transmitting data every 5 seconds via Bluetooth Low Energy. IC Role / Device Role / Timing Role: Efficient step-down converter powering MCU, sensor ICs, and BLE SoC during brief active bursts and deep-sleep intervals. Use Value: Seamless PFM-to-PWM transition maintains <15 mV output ripple during wake-up; output discharge ensures clean reset between transmissions. |
| Smart Hearing Aid | Industrial Wireless Node |
Use Scenario: Miniature hearing aid with DSP, MEMS microphone, and Class-D receiver, constrained by <5 mm height and 100 mm³ volume. IC Role / Device Role / Timing Role: Single-supply buck converter generating regulated 1.8 V for digital processing and 3.3 V for audio amplification from 1.2–1.5 V battery stack. Use Value: WCSP package fits under acoustic chamber; 100% duty cycle sustains output during battery sag; <0.6 mm profile meets mechanical envelope. |
Use Scenario: Dust- and moisture-resistant wireless temperature node deployed in factory automation, powered by two AA alkaline cells. IC Role / Device Role / Timing Role: High-efficiency power manager converting 2.4–3.2 V battery voltage to stable 3.3 V for MCU, LoRa transceiver, and precision ADC. Use Value: 1.8–3.3 V output range matches common sensor/RF supply requirements; UVLO (1.75 V) prevents erratic behavior near end-of-life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62807YKAT | Same 6-pin WCSP package and 1.5 MHz fSW, but fixed 1.2 V output or 0.8–1.55 V selectable range (50-mV steps); 0.6 A rating. | Targets lower-voltage MCUs and RF ICs requiring 1.2 V bias; not suitable for 1.8+ V analog rails. | Select TPS62807YKAT only when 1.2 V or sub-1.55 V output is required-avoid for 1.8–3.3 V applications. |
| TPS62802YKAT | Same 1.8–3.3 V output range and 100-mV steps, but 4 MHz fSW and 1 A output capability; identical YKA package. | Enables smaller inductors (0.33 µH) and faster transient response; higher IQ (2.5 µA) and thermal load in 1 A operation. | Choose TPS62802YKAT for higher current or tighter transient demands; TPS62808YKAT preferred for ultra-low-IQ battery longevity. |
Compared with TPS62807YKAT and TPS62802YKAT, the TPS62808YKAT uniquely balances 0.6 A capability, 1.8–3.3 V flexibility, and industry-leading 2.3 µA quiescent current-making it optimal for long-life, space-limited, mid-voltage wearable and sensor systems where efficiency at microamp loads is critical.
Availability
TPS62808YKAT is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and smart hearing aids requiring stable component supply, consistent WCSP packaging, and guaranteed long-term availability for consumer and medical-grade production.
Supply support for TPS62808YKAT 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 and ultra-low-power system design.
The TPS6280x family-including TPS62808YKAT-is engineered for battery-powered edge devices demanding minimal quiescent current, tiny solution size, and robust performance across temperature and load variations.
FAQ
What is the maximum output current supported by the TPS62808YKAT?
The TPS62808YKAT delivers up to 0.6 A continuous output current under recommended operating conditions (VIN ≥ 2.3 V). Its overcurrent protection limits high-side switch current to 0.95–1.1 A and low-side to 0.85–1.0 A, ensuring safe operation during transient surges without latch-off.
How does the R2D converter on the TPS62808YKAT set output voltage?
The TPS62808YKAT uses an integrated resistor-to-digital (R2D) converter that measures an external E96 1% resistor (10–249 kΩ) connected between VSEL/MODE and GND during startup. It maps the resistance to one of 16 pre-programmed output voltages from 1.8 V to 3.3 V in 100-mV steps-eliminating external feedback resistors and improving accuracy.
Does the TPS62808YKAT support output voltage discharge, and how is it implemented?
Yes, the TPS62808YKAT provides active output discharge via an internal MOSFET connected to the VOS pin. This feature activates only after the device has been enabled at least once since power-up and requires VIN > 1.7 V to remain functional-ensuring controlled VOUT ramp-down during shutdown.
What is the purpose of the VOS pin on the TPS62808YKAT?
The VOS pin on the TPS62808YKAT serves dual functions: (1) it connects directly to the output capacitor to provide precise voltage sensing for the internal feedback loop, and (2) it hosts the gate of an internal discharge MOSFET that actively pulls VOUT to GND when the device is disabled-critical for clean power sequencing.
Can the TPS62808YKAT operate with input voltage close to its output voltage?
Yes, the TPS62808YKAT supports 100% duty cycle operation, maintaining regulation even when VIN approaches VOUT (e.g., 1.85 V input for 1.8 V output). This capability prevents rail collapse during battery voltage sag and ensures uninterrupted operation in energy-harvesting or multi-cell alkaline systems.
TPS62808YKAT 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):
- 1.8V (1.8V)
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA (1.05x0.70)
TPS62808YKAT FAQ
1.How can I place an order for TPS62808YKAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62808YKAT 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 TPS62808YKAT reliable?
The price and inventory of TPS62808YKAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62808YKAT is usually 5 days.
3.What payment methods are accepted for TPS62808YKAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62808YKAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62808YKAT?
TPS62808YKAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62808YKAT 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 TPS62808YKAT?
For technical support, including TPS62808YKAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62808YKAT requirements.
6.How does Aetrix verify that TPS62808YKAT is sourced from the original manufacturer or authorized distributors?
All TPS62808YKAT 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 TPS62808YKAT meets industry standards.
7.What is the process for return or replacement of TPS62808YKAT?
All TPS62808YKAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62808YKAT, 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 TPS62808YKAT part is unused and in its original packaging.
Return procedure for TPS62808YKAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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