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Texas Instruments TPS62806YKAT
- Part No.:
- TPS62806YKAT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62806YKAT.pdf
- Description:
- IC REG BCK ADJ/0.4V 600MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:860
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Product details
Overview
TPS62806YKAT from Texas Instruments is a 1.75V–5.5V input, 0.6A synchronous step-down DC/DC converter in a 6-pin WCSP package, featuring 2.3µA quiescent current, 1.5MHz switching frequency, and 0.4V–0.775V selectable output voltage with ±1% accuracy in PWM mode - optimized for ultra-low-power wearable and IoT power rails.
For engineers reviewing the TPS62806YKAT datasheet, TPS62806YKAT pinout, TPS62806YKAT application, or TPS62806YKAT equivalent, this device delivers verified sub-1µA shutdown current, R2D-based resistor-programmable VOUT, DCS-Control topology for fast transient response, and integrated output discharge - critical for battery-powered systems requiring long runtime and clean power sequencing.
Technical Context
The TPS62806YKAT implements TI's DCS-Control topology with dual-loop regulation: an AC loop sensing VOS for immediate transient response and a DC feedback loop for precise steady-state regulation. It supports seamless PFM-to-PWM transition, enabling high efficiency from 1µA to 600mA load range.
Its VSEL/MODE pin serves two validated functions: during startup, it acts as an R2D input to select one of 16 output voltages (0.4V–0.775V in 25-mV steps) via a single external E96 1% resistor; after startup, it becomes a digital MODE input to force PWM operation - eliminating light-load frequency modulation and associated RF interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75V to 5.5V - supports single-cell Li-ion, 2×AA, or USB-supplied systems without external LDO pre-regulation. |
| Quiescent Current | 2.3µA in power save mode - extends battery life in always-on sensor nodes and wearables. |
| Switching Frequency | 1.5MHz (PWM mode) - enables use of compact 0.7–1.2µH inductors and <5mm² total solution size. |
| Output Current | 0.6A continuous - sufficient for low-power microcontrollers, BLE radios, and display drivers. |
| Output Voltage Accuracy | ±1% at 25°C in PWM mode - ensures stable core voltage for precision analog or RF subsystems. |
| Output Voltage Range | 0.4V to 0.775V in 25-mV steps - targets sub-1V logic rails (e.g., ARM Cortex-M0+ cores, LPDDR I/O). |
| Shutdown Current | 120nA typical - minimizes battery drain during deep-sleep or system off states. |
Pinout & Package
TPS62806YKAT uses a 6-pin, 0.35mm-pitch DSBGA (WCSP) package measuring 1.05mm × 0.70mm - compatible with 0201 passives and supporting <0.6mm board 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 1.75–5.5V; requires local 0.5–4.7µF ceramic capacitor for high-frequency noise suppression. |
| VSEL/MODE (C1) | Configurable I/O | During startup: reads external resistor for VOUT selection (RVSEL = 10–249kΩ); post-startup: digital input to force PWM mode (VIH ≥ 0.8V). |
| VOS (A2) | Output voltage sense & discharge | Direct connection to output capacitor enables accurate regulation and activates internal MOSFET discharge when EN = low. |
| SW (B2) | Switch node | Connects to inductor; carries high di/dt switching current - requires short, low-inductance trace to minimize EMI. |
| EN (C2) | Enable control | Active-high enable with internal 500kΩ pulldown - eliminates need for external pull-down; transitions cleanly between shutdown and operation. |
Key Features
| Feature | Design Value |
|---|---|
| R2D voltage programming | Single external resistor sets output voltage (0.4V–0.775V), eliminating external feedback divider and improving accuracy vs. traditional resistive networks. |
| DCS-Control topology | Combines hysteretic speed and voltage-mode stability - achieves <10µs load transient response with minimal output voltage deviation. |
| Output discharge | Internal MOSFET actively discharges VOUT when disabled, ensuring safe, controlled power-down for downstream logic and ADC references. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + dropout, extending usable battery range in single-cell applications. |
| Smart enable with pulldown | Integrated 500kΩ EN pulldown prevents floating start-up; automatically disconnects after power-up to avoid leakage during active operation. |
Applications
| Wearable Health Sensors | Bluetooth LE Edge Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG monitoring powered by coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Primary buck regulator supplying 0.6V core voltage to ultra-low-power MCU and analog front-end. Use Value: 2.3µA IQ and 120nA shutdown current extend battery life beyond 12 months; 1.5MHz switching allows miniature 0805 inductor integration. |
Use Scenario: Battery-operated industrial sensor node transmitting data via Bluetooth 5.0. IC Role / Device Role / Timing Role: System power rail generator delivering 0.65V to BLE SoC RF section and 0.7V to digital core. Use Value: Forced PWM mode eliminates switching frequency harmonics that interfere with 2.4GHz radio reception; ±1% VOUT accuracy maintains RF PA linearity. |
| Smartwatch Display Backlight Driver | Low-Power IoT Gateway MCU Rail |
|
Use Scenario: Always-on OLED display with dynamic brightness control in compact watch form factor. IC Role / Device Role / Timing Role: Efficient intermediate rail generator stepping down 3.6V battery to 0.55V for display driver IC logic supply. Use Value: Tiny 1.05mm × 0.70mm WCSP footprint saves PCB area; output discharge ensures clean reset of display controller on wake-up. |
Use Scenario: Cellular-connected environmental monitor operating on AA batteries for >2 years. IC Role / Device Role / Timing Role: Main system regulator powering ARM Cortex-M4F MCU, LoRa transceiver, and temperature/humidity sensors. Use Value: Seamless PFM/PWM transition maintains >90% efficiency across 10µA–600mA load range; UVLO (1.75V) maximizes usable battery capacity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62800YKAT | Same 6-pin WCSP package and R2D interface, but rated for 1A output and 4MHz switching frequency. | Better suited for higher-current loads (e.g., multi-core MCUs), but requires smaller inductor (0.33–0.47µH) and has higher IQ in PWM mode (8mA). | Select TPS62800YKAT only if peak load exceeds 0.6A or faster transient response is required; otherwise TPS62806YKAT offers lower cost and optimized light-load efficiency. |
| TPS62086YKAR | 3A buck in 8-pin WCSP, 2.5µA IQ, fixed 0.6V output, no R2D programmability. | Designed for higher-power applications like PMIC companion rails; lacks flexible VOUT selection and forced PWM mode. | Choose TPS62086YKAR when fixed 0.6V/3A is needed and board space permits larger 1.35mm × 1.05mm package; not a drop-in replacement for programmable or low-IQ requirements. |
Compared with TPS62800YKAT and TPS62086YKAR, the TPS62806YKAT uniquely balances ultra-low quiescent current (2.3µA), 0.6A capability, and resistor-programmable sub-1V outputs in the smallest WCSP footprint - making it optimal for space-constrained, battery-limited IoT endpoints where flexibility and runtime are prioritized over raw current capacity.
Availability
TPS62806YKAT is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and smartphone auxiliary rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62806YKAT 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.
The TPS6280x family was designed specifically for ultra-low-power, space-constrained battery-operated devices - delivering industry-leading quiescent current, sub-1mm WCSP packaging, and intelligent voltage programming without sacrificing regulation accuracy or transient performance.
FAQ
What is the maximum output current supported by the TPS62806YKAT?
The TPS62806YKAT supports up to 0.6A continuous output current under recommended operating conditions (VIN ≥ 2.3V). Its current limit is specified at 0.95–1.2A for the high-side MOSFET and 0.85–1.1A for the low-side MOSFET, providing robust overload protection while maintaining reliable operation at rated load.
How does the R2D converter in the TPS62806YKAT set the output voltage?
The TPS62806YKAT uses an internal resistor-to-digital (R2D) converter on the VSEL/MODE pin to read an external resistor (10–249kΩ, E96 1%) connected to GND. This selects one of 16 pre-defined output voltages between 0.4V and 0.775V in 25-mV steps - eliminating external feedback resistors and improving accuracy versus traditional divider networks.
Does the TPS62806YKAT support forced PWM mode, and how is it enabled?
Yes, the TPS62806YKAT supports forced PWM mode. After startup completes, applying a logic-high level (≥0.8V) to the VSEL/MODE pin forces continuous PWM operation across all load conditions - reducing output voltage ripple and eliminating PFM frequency modulation that can interfere with sensitive RF or audio circuits.
What is the purpose of the VOS pin on the TPS62806YKAT, and how should it be connected?
The VOS pin on the TPS62806YKAT serves dual functions: it provides the feedback signal for output voltage regulation and enables internal output discharge. It must be connected directly to the output capacitor's positive terminal using the shortest possible trace to ensure accurate sensing and effective discharge when the device is disabled.
Can the TPS62806YKAT operate with input voltages below 2.3V, and what are the implications?
Yes, the TPS62806YKAT operates down to 1.75V input. However, per datasheet specifications, output current capability is reduced below VIN = 2.3V. At lower input voltages, the device maintains regulation but may not sustain full 0.6A output due to duty-cycle and switch resistance limitations - design validation at target VIN is recommended.
TPS62806YKAT 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:
- 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:
- 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)
TPS62806YKAT FAQ
1.How can I place an order for TPS62806YKAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62806YKAT 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 TPS62806YKAT reliable?
The price and inventory of TPS62806YKAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62806YKAT is usually 5 days.
3.What payment methods are accepted for TPS62806YKAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62806YKAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62806YKAT?
TPS62806YKAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62806YKAT 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 TPS62806YKAT?
For technical support, including TPS62806YKAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62806YKAT requirements.
6.How does Aetrix verify that TPS62806YKAT is sourced from the original manufacturer or authorized distributors?
All TPS62806YKAT 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 TPS62806YKAT meets industry standards.
7.What is the process for return or replacement of TPS62806YKAT?
All TPS62806YKAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62806YKAT, 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 TPS62806YKAT part is unused and in its original packaging.
Return procedure for TPS62806YKAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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