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Texas Instruments TPS62808YKAR
- Part No.:
- TPS62808YKAR
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62808YKAR.pdf
- Description:
- IC REG BCK ADJ/1.8V 600MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:20,644
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Product details
Overview
TPS62808YKAR from Texas Instruments is a 1.75V–5.5V input, 1.8V–3.3V adjustable-output synchronous step-down converter in a 6-pin WCSP package, delivering up to 0.6A with 2.3µA quiescent current and 1.5MHz switching frequency. It employs DCS-Control topology for ultra-low-IQ operation and seamless PFM/PWM transition, targeting space-constrained battery-powered systems such as wearable sensors and IoT edge nodes.
For engineers reviewing the TPS62808YKAR datasheet, TPS62808YKAR pinout, TPS62808YKAR application, or TPS62808YKAR equivalent, key selection criteria include its 0.6A output capability at 1.5MHz, R2D-based VOUT programming via single resistor (1.8V–3.3V in 100-mV steps), integrated output discharge, and support for <5mm² PCB area with <0.6mm height - critical for compact portable designs.
Technical Context
The TPS62808YKAR implements TI's DCS-Control topology with dual-loop regulation: an AC loop sensing VOS for fast transient response and low ripple, and a DC voltage feedback loop for precise load regulation. Its R2D (resistor-to-digital) converter reads a single external resistor on VSEL/MODE during startup to select one of 16 output voltages within 1.8V–3.3V range, eliminating external feedback dividers.
It supports three functional modes: power save mode (PFM) for 2.3µA IQ at light loads, forced PWM mode (enabled by high-level VSEL/MODE post-startup) for fixed 1.5MHz operation and reduced noise, and 100% duty cycle operation for VIN near VOUT. Thermal shutdown (160°C) and cycle-by-cycle current limiting protect against overload and short-circuit conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75V to 5.5V - supports single-cell Li-ion, 2×AA/AAA, or regulated 3.3V/5V rails without pre-regulation. |
| Output Current | 0.6A maximum - sufficient for low-power microcontrollers, BLE radios, and sensor hubs in wearables. |
| Quiescent Current | 2.3µA in power save mode - enables multi-year battery life in always-on IoT endpoints. |
| Switching Frequency | 1.5MHz (PWM mode) - allows use of small 0.7–1.2µH inductors and compact 3–26µF ceramic output capacitors. |
| Output Voltage Accuracy | ±1% at 25°C (PWM mode) - ensures stable core/sensor rail compliance without calibration. |
| VOUT Programming | 16 selectable values from 1.8V to 3.3V in 100-mV steps via single E96 1% resistor - simplifies BOM and enables one-footprint design across multiple voltage rails. |
| Package | 6-pin DSBGA (YKA), 1.05mm × 0.70mm, 0.35mm pitch - fits <5mm² layout with <0.6mm profile for ultra-thin devices. |
Pinout & Package
TPS62808YKAR uses a 6-pin, 0.35mm-pitch wafer-chip-scale package (DSBGA, YKA) measuring 1.05mm × 0.70mm. The package supports <0.6mm board height and is optimized for 0201 passive placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Power ground | Primary return path for input/output capacitors and internal power switches; must be connected near CIN/COUT pads to minimize noise. |
| VIN | Input power supply | Accepts 1.75V–5.5V; requires local 0.5–4.7µF ceramic capacitor for high-frequency noise suppression. |
| VSEL/MODE | Configurable I/O | During startup: sets VOUT via R2D conversion (10–249kΩ resistor); post-startup: selects forced PWM (high) or power save (low) mode. |
| VOS | Output voltage sense | Connects directly to output capacitor; enables internal feedback regulation and activates output discharge MOSFET when EN = low. |
| SW | Switch node | Drives external 0.7–1.2µH inductor; requires short, low-inductance trace to minimize EMI and switching losses. |
| EN | Enable control | Active-high logic input with internal 500kΩ pulldown; enables device when >0.8V, disables with <0.4V; supports controlled power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Combines hysteretic speed and voltage-mode stability for <10µs load transient response and <10mV output ripple under dynamic loads. |
| R2D output programming | Replaces traditional resistor divider with single external resistor - improves VOUT accuracy (±0.5% typical vs ±2% with external dividers) and reduces component count. |
| Integrated output discharge | Internal MOSFET discharges VOUT through VOS pin when disabled - prevents floating rail and ensures clean power-down in multi-rail systems. |
| Smart enable with pulldown | Internal 500kΩ EN pulldown prevents floating start-up; disconnects after power-up to avoid leakage - eliminates need for external pull-down resistor. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + dropout - extends usable battery range in single-cell applications (e.g., 2.0V cutoff for 1.8V rail). |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Compact wrist-worn device with optical heart-rate sensor, accelerometer, and BLE radio operating from coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Primary power regulator supplying 1.8V to MCU and 3.3V to analog front-end and RF transceiver via resistor-programmed dual outputs. Use Value: 2.3µA quiescent current extends battery life beyond 2 years; 1.05mm × 0.70mm YKA package enables <5mm² total solution size. |
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 delivering 3.0V to BLE SoC during active transmit bursts and entering deep PFM sleep between transmissions. Use Value: Seamless PFM→PWM transition maintains <10mV output droop during 20mA transmit pulses; 1.5MHz switching avoids RF band interference. |
| Industrial Wireless Transmitter | Portable Medical Diagnostic Tool |
Use Scenario: LoRaWAN or NB-IoT node deployed in remote locations with primary AA/AAA battery pack and no charging infrastructure. IC Role / Device Role / Timing Role: Main DC-DC regulator powering ultra-low-power MCU, RF module, and precision ADC - configured for 3.3V output with forced PWM during data upload. Use Value: 1.5MHz forced PWM mode suppresses switching noise during sensitive RF transmission; output discharge ensures safe reset sequencing. |
Use Scenario: Handheld point-of-care device with OLED display, touch controller, and analog biosignal acquisition circuitry. IC Role / Device Role / Timing Role: Single-chip power solution generating 1.8V for digital core and 3.3V for analog signal chain from 3.6V lithium polymer cell. Use Value: R2D programming allows field-voltage reconfiguration via resistor change; thermal shutdown (160°C) protects during extended clinical use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62807YKAR | Same 6-pin YKA package and 1.5MHz fSW, but fixed 1.2V output or 0.8–1.55V programmable range (50-mV steps); 0.6A rating. | Targets 1.2V core rails for MCUs or 0.8–1.55V I/O supplies - not suitable for 1.8V+ analog rails. | Select TPS62807YKAR only when 1.2V or sub-1.55V output is required; TPS62808YKAR is mandatory for 1.8–3.3V rails. |
| TPS62802YKAR | Same 1.8–3.3V output range and 100-mV steps, but 4MHz fSW and 1A output capability; identical YKA package. | Supports higher current loads (e.g., dual-core MCUs) and smaller inductors (0.33–0.47µH), but increases light-load power loss due to higher switching losses. | Choose TPS62802YKAR for >0.6A peak loads or where 4MHz enables smaller magnetics; retain TPS62808YKAR for optimal 0.6A/2.3µA trade-off. |
Compared with TPS62807YKAR and TPS62802YKAR, the TPS62808YKAR uniquely balances 0.6A output, 1.5MHz switching, and 1.8–3.3V programmability - making it the only option for space-constrained 1.8V+ rails requiring ultra-low quiescent current and minimal BOM count.
Availability
TPS62808YKAR is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and portable medical diagnostics requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.
Supply support for TPS62808YKAR 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and low-power system design.
The TPS6280x family was designed specifically for ultra-compact, battery-operated applications demanding nanoscale footprint, multi-year runtime, and flexible voltage rail generation - exemplified by the TPS62808YKAR's 1.05mm × 0.70mm WCSP and R2D programmability.
FAQ
What is the maximum output current supported by the TPS62808YKAR?
The TPS62808YKAR supports a continuous output current of up to 0.6A 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 short-circuit protection while maintaining reliable 0.6A delivery across temperature and input voltage ranges.
How does the R2D converter in the TPS62808YKAR set the output voltage?
The TPS62808YKAR's R2D converter measures a single external resistor (RVSEL) connected between VSEL/MODE and GND during startup, translating its value into one of 16 pre-defined output voltages from 1.8V to 3.3V in 100-mV steps. This occurs before the pin transitions to mode control, enabling accurate, divider-free VOUT programming without trimming or calibration.
Can the TPS62808YKAR operate with input voltage equal to the output voltage?
Yes, the TPS62808YKAR supports 100% duty cycle operation, allowing it to maintain regulation when VIN approaches VOUT (e.g., 2.0V input for 1.8V output). This extends usable battery voltage range in single-cell systems and eliminates the need for additional LDO post-regulation in many low-dropout scenarios.
What is the purpose of the VOS pin on the TPS62808YKAR?
The VOS pin on the TPS62808YKAR serves two critical functions: it provides the feedback node for the internal voltage regulation loop, ensuring precise output accuracy, and it connects to an internal discharge MOSFET that actively pulls the output voltage to near 0V when the device is disabled - preventing floating rails and enabling safe multi-rail power sequencing.
Does the TPS62808YKAR require external compensation components?
No, the TPS62808YKAR features fully internal compensation optimized for DCS-Control operation with standard 0.7–1.2µH inductors and 3–26µF ceramic output capacitors. Its integrated compensation network eliminates external RC networks, reducing BOM count and layout sensitivity while guaranteeing stability across all valid operating conditions.
TPS62808YKAR 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):
- 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)
TPS62808YKAR FAQ
1.How can I place an order for TPS62808YKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62808YKAR 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 TPS62808YKAR reliable?
The price and inventory of TPS62808YKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62808YKAR is usually 5 days.
3.What payment methods are accepted for TPS62808YKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62808YKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62808YKAR?
TPS62808YKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62808YKAR 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 TPS62808YKAR?
For technical support, including TPS62808YKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62808YKAR requirements.
6.How does Aetrix verify that TPS62808YKAR is sourced from the original manufacturer or authorized distributors?
All TPS62808YKAR 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 TPS62808YKAR meets industry standards.
7.What is the process for return or replacement of TPS62808YKAR?
All TPS62808YKAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62808YKAR, 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 TPS62808YKAR part is unused and in its original packaging.
Return procedure for TPS62808YKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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