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Texas Instruments TPS62802YKAT
- Part No.:
- TPS62802YKAT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62802YKAT.pdf
- Description:
- IC REG BUCK ADJ/1.8V 1A 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:8,810
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Product details
Overview
TPS62802YKAT from Texas Instruments is a 4 MHz synchronous step-down DC-DC converter in a 6-pin WCSP package, delivering up to 1 A output current with 2.3 µA quiescent current and 1% output voltage accuracy over 1.8 V–3.3 V range. It employs DCS-Control topology for fast transient response and supports R2D-based flexible VOUT selection via a single external resistor.
For engineers reviewing the TPS62802YKAT datasheet, TPS62802YKAT pinout, TPS62802YKAT application, or TPS62802YKAT equivalent, this device is selected for ultra-low-power battery-operated systems requiring high efficiency at microamp loads, minimal PCB area (<5 mm²), and sub-0.6 mm height constraints - especially where programmable output voltage and forced PWM mode are critical.
Technical Context
The TPS62802YKAT integrates TI's DCS-Control topology, combining hysteretic and voltage-mode control to enable seamless PFM-to-PWM transition, low output ripple, and excellent load transient response. Its R2D (resistor-to-digital) converter reads an external resistor on the VSEL/MODE pin to select one of 16 output voltages within 1.8 V–3.3 V (100 mV steps) or fixes VOUT to 1.8 V when tied to GND.
It features smart enable logic with internal 500 kΩ pulldown, output discharge via VOS pin, 100% duty cycle operation, and thermal shutdown at 160°C with 20°C hysteresis. The device operates across 1.75 V–5.5 V input, supports 0201 passive integration, and maintains stable regulation with 0.33–0.82 µH inductors and 2–26 µF output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75 V to 5.5 V - supports single-cell Li-ion, 2×AA, or USB-powered systems without pre-regulation. |
| Output Voltage Range | 1.8 V to 3.3 V in 100 mV steps - enables precise rail matching for MCU I/O, RF transceivers, or sensors. |
| Quiescent Current | 2.3 µA in power save mode - extends battery life in always-on wearable or IoT sleep states. |
| Switching Frequency | 4 MHz (PWM mode) - allows use of tiny 0.47 µH inductors and reduces solution size vs. 1.5 MHz alternatives. |
| Output Accuracy | ±1% at 25°C–85°C (PWM mode) - ensures reliable logic-level compliance without external trimming. |
| Max Output Current | 1 A (VIN ≥ 2.3 V) - sufficient for powering ARM Cortex-M cores, BLE SoCs, or display drivers. |
| Package | 6-pin DSBGA (YKA), 1.05 mm × 0.70 mm, 0.35 mm pitch - fits ultra-compact layouts with <5 mm² footprint. |
Pinout & Package
TPS62802YKAT uses a 6-pin Wafer Chip Scale Package (DSBGA, YKA) measuring 1.05 mm × 0.70 mm with 0.35 mm pitch. The package supports <0.6 mm board height and is optimized for 0201 passive integration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Power ground | Primary return path for VIN, VOS, and SW; must be connected near input/output capacitor GND pads to minimize noise. |
| VIN (B1) | Input power supply | Accepts 1.75–5.5 V; requires local 4.7 µF ceramic capacitor for EMI suppression and voltage spike mitigation. |
| VSEL/MODE (C1) | Configurable dual-function pin | During startup: sets VOUT via R2D reading of external resistor (10–249 kΩ); after startup: selects PWM (high) or PFM (low) mode. |
| VOS (A2) | Output voltage sense & discharge | Connects directly to output capacitor; enables internal discharge MOSFET to pull VOUT to GND when EN = low. |
| SW (B2) | Switch node | Drives external inductor; requires short, low-inductance trace to minimize switching losses and EMI. |
| EN (C2) | Enable control | High-active with internal 500 kΩ pulldown; monotonic rising edge required to avoid false enable; disables regulator and activates VOS discharge. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Enables simultaneous fast transient response, low output ripple, and seamless PFM/PWM transition without external compensation. |
| R2D voltage selection | Replaces traditional resistor divider with single external resistor (E96, 1%, ≤30 pF parasitic), improving accuracy and reducing BOM count. |
| Output discharge via VOS | Actively discharges VOUT through internal MOSFET when disabled - prevents floating rails and ensures defined power-down sequencing. |
| Smart enable with pulldown | Internal 500 kΩ EN pulldown prevents unintended startup; pulldown disconnects post-power-up to avoid interference with active control. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT (e.g., 1.8 V out from 2.0 V input), eliminating dropout-related brownouts. |
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 BLE SoC and 3.3 V to analog front-end via dual-rail configuration. Use Value: 2.3 µA IQ extends battery runtime beyond 7 days in sleep mode; 4 MHz switching enables 0.47 µH inductor and <5 mm² total solution size. |
Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity data every 5 seconds via Bluetooth Low Energy. IC Role / Device Role / Timing Role: Single-rail 3.3 V supply for MCU, sensor interface, and RF transceiver with dynamic load ranging from 10 µA (sleep) to 80 mA (TX burst). Use Value: Seamless PFM→PWM transition maintains >90% efficiency across full load range; forced PWM mode eliminates RF interference during transmission. |
| Smartwatch Display Power | Industrial Wireless Transmitter |
Use Scenario: Always-on OLED display subsystem requiring stable 2.8 V rail with rapid brightness transitions and minimal EMI. IC Role / Device Role / Timing Role: Dedicated display supply with fixed 2.8 V output (via VSEL/MODE = GND) and forced PWM mode enabled during screen updates. Use Value: 4 MHz constant-frequency operation suppresses switching noise in sensitive analog pixel drivers; 1% accuracy prevents gamma shift across temperature. |
Use Scenario: Remote LoRaWAN transmitter mounted in harsh industrial environment, powered by 2×AA alkaline batteries with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Main system regulator converting 1.8–3.2 V battery voltage to regulated 3.3 V for microcontroller and RF IC. Use Value: Ultra-low 2.3 µA IQ minimizes self-discharge; DCS-Control ensures stable regulation even as battery voltage drops below 2.0 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62808YKAT | Same 6-pin WCSP package and 1.8–3.3 V range, but rated for 0.6 A max output and 1.5 MHz switching frequency. | Lower output current and slower switching limit inductor size reduction and light-load efficiency in space-constrained designs. | Select TPS62808YKAT only if 0.6 A suffices and lower EMI priority outweighs peak efficiency needs. |
| TPS6208818RTER | 3-mm × 2-mm QFN-11 package, 1.8 V fixed output, 1 A rating, 2.5 MHz switching, 1.5 µA IQ. | Larger footprint and different pinout prevent drop-in replacement; lacks R2D programmability and VOS discharge. | Choose TPS6208818RTER for higher thermal performance in thermally constrained boards where programmability is unnecessary. |
Compared with TPS62808YKAT and TPS6208818RTER, the TPS62802YKAT uniquely combines 1 A capability, 4 MHz operation, R2D configurability, and integrated VOS discharge in a <5 mm² WCSP - making it optimal for next-gen wearables demanding both miniaturization and functional flexibility.
Availability
TPS62802YKAT is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and compact portable devices requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62802YKAT 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 product line was designed specifically for ultra-low-power, space-constrained battery-operated applications - prioritizing nanoscale packaging, sub-µA quiescent current, and intelligent power mode management without sacrificing regulation accuracy or transient response.
FAQ
What is the fixed output voltage of TPS62802YKAT when VSEL/MODE is grounded?
The TPS62802YKAT delivers a fixed 1.8 V output when the VSEL/MODE pin is connected directly to GND. This configuration bypasses the R2D converter and eliminates the need for an external resistor, simplifying design for applications requiring only that specific rail. The 1.8 V setting is factory-trimmed and maintains ±1% accuracy across temperature and load conditions, as specified in the device comparison table and electrical characteristics section of the datasheet.
Does TPS62802YKAT support forced PWM mode, and how is it activated?
Yes, the TPS62802YKAT supports forced PWM mode. After the device completes startup and the R2D conversion, applying a logic-high level (≥0.8 V) to the VSEL/MODE pin switches the regulator from automatic PFM/PWM mode into forced PWM operation. In this mode, the TPS62802YKAT maintains a constant 4 MHz switching frequency across all load conditions - reducing output voltage ripple and eliminating frequency-domain interference with RF or precision analog circuits.
What is the maximum output current capability of TPS62802YKAT under typical operating conditions?
The TPS62802YKAT delivers up to 1 A of continuous output current when the input voltage is ≥2.3 V, as confirmed in Section 6.3 (Recommended Operating Conditions) of the datasheet. At lower input voltages (e.g., 1.8 V), the maximum sustainable output current decreases to 0.7 A due to duty-cycle limitations and internal switch RDS(ON) heating. Both values are validated across –40°C to +125°C junction temperature range with appropriate thermal layout and 0.47 µH inductor.
How does the R2D converter in TPS62802YKAT determine output voltage, and what resistor tolerance is required?
The R2D (resistor-to-digital) converter in the TPS62802YKAT applies a precision current source to the external resistor (RVSEL) connected between VSEL/MODE and GND during startup, then digitizes the resulting voltage to select one of 16 internal feedback dividers. It requires E96-series resistors with 1% tolerance and ≤±200 ppm/°C temperature coefficient - ensuring accurate VOUT selection across temperature without affecting regulation accuracy, since RVSEL is not part of the feedback loop.
Can TPS62802YKAT operate with input voltage equal to its output voltage, and how is this achieved?
Yes, the TPS62802YKAT supports 100% duty cycle operation, enabling regulation even when VIN approaches VOUT (e.g., 1.85 V input for 1.8 V output). This is implemented by holding the high-side MOSFET continuously on - bypassing normal PWM switching - which prevents dropout and maintains stable output during deep battery discharge. The feature is active automatically when required and does not require external configuration or mode selection.
TPS62802YKAT 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:
- 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)
TPS62802YKAT FAQ
1.How can I place an order for TPS62802YKAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62802YKAT 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 TPS62802YKAT reliable?
The price and inventory of TPS62802YKAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62802YKAT is usually 5 days.
3.What payment methods are accepted for TPS62802YKAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62802YKAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62802YKAT?
TPS62802YKAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62802YKAT 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 TPS62802YKAT?
For technical support, including TPS62802YKAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62802YKAT requirements.
6.How does Aetrix verify that TPS62802YKAT is sourced from the original manufacturer or authorized distributors?
All TPS62802YKAT 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 TPS62802YKAT meets industry standards.
7.What is the process for return or replacement of TPS62802YKAT?
All TPS62802YKAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62802YKAT, 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 TPS62802YKAT part is unused and in its original packaging.
Return procedure for TPS62802YKAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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