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Texas Instruments TPS62802YKAR
- Part No.:
- TPS62802YKAR
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62802YKAR.pdf
- Description:
- IC REG BUCK ADJ/1.8V 1A 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:32,078
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Product details
Overview
TPS62802YKAR from Texas Instruments is a 4 MHz, 1.8 V to 3.3 V output, 1 A synchronous step-down converter in a 0.35 mm pitch WCSP package, featuring 2.3 µA quiescent current and DCS-Control topology for ultra-low-power wearable and IoT power rails.
For engineers reviewing the TPS62802YKAR datasheet, TPS62802YKAR pinout, TPS62802YKAR application, or TPS62802YKAR equivalent, this device supports resistor-set voltage selection (16 options), forced PWM mode, output discharge, 100% duty cycle operation, and compact <5 mm² PCB footprint with 0201-compatible layout.
Technical Context
The TPS62802YKAR implements TI's DCS-Control topology-combining hysteretic and voltage-mode control-to deliver fast transient response, low output ripple, and seamless PFM-to-PWM transition. Its R2D (resistor-to-digital) converter reads an external resistor on the VSEL/MODE pin to select one of 16 output voltages within the 1.8 V–3.3 V range in 100 mV steps.
It operates across 1.75 V–5.5 V input, supports 1 A continuous output at VIN ≥ 2.3 V, and integrates smart enable with internal 500 kΩ pulldown, thermal shutdown (160°C), and output discharge via the VOS pin. The 6-pin WCSP package enables sub-0.6 mm height designs.
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, and USB-powered systems without pre-regulation. |
| Output Voltage Range | 1.8 V to 3.3 V in 100 mV steps - fixed 1.8 V when VSEL/MODE tied to GND; programmable via single E96 resistor (10–249 kΩ). |
| Max Output Current | 1 A - sustained at VIN ≥ 2.3 V; enables powering core logic, RF transceivers, or sensors in space-constrained devices. |
| Quiescent Current | 2.3 µA (power save mode) - extends battery life in always-on wearables and sensor nodes with multi-week standby. |
| Switching Frequency | 4 MHz (PWM mode) - allows use of tiny 0.47 µH inductors and 10 µF ceramic output capacitors for minimal solution size. |
| Output Accuracy | ±1% (PWM mode, 25°C–85°C) - ensures stable MCU core voltage or ADC reference without external trimming. |
| Package | 6-pin YKA WCSP, 1.05 mm × 0.70 mm, 0.35 mm pitch - supports <5 mm² board area and <0.6 mm profile for ultra-thin wearables. |
Pinout & Package
TPS62802YKAR uses a 6-pin DSBGA (WCSP) package designated YKA, measuring 1.05 mm × 0.70 mm with 0.35 mm pitch. The package supports 0201 component placement and enables sub-0.6 mm design height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Power ground | Primary return path for input/output capacitors and power stage; must be connected near both CIN and COUT for noise suppression. |
| VIN (B1) | Input power supply | Accepts 1.75–5.5 V; requires local 4.7 µF ceramic capacitor placed adjacent to minimize voltage spikes and EMI. |
| VSEL/MODE (C1) | Configurable I/O | During startup: sets VOUT via R2D conversion (16 options); after startup: selects power save (low) or forced PWM (high) mode. |
| VOS (A2) | Output voltage sense & discharge | Connects directly to output capacitor; enables precise regulation via internal feedback divider and discharges VOUT via internal MOSFET when disabled. |
| SW (B2) | Switch node | Drives external 0.47 µH inductor; high dv/dt node requiring short, low-inductance trace routing to minimize EMI and ringing. |
| EN (C2) | Enable control | Active-high logic input with internal 500 kΩ pulldown; ensures safe default-off state; disables converter and activates output discharge. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Enables simultaneous high efficiency at light loads (2.3 µA IQ) and fast transient response (<10 µs load step recovery) without external compensation. |
| R2D voltage selection | Replaces traditional resistor divider with single external resistor (E96, 1%) for 16 factory-trimmed VOUT options-improves accuracy and reduces BOM count. |
| Output discharge | Internal VOS-discharge MOSFET actively pulls VOUT to near 0 V upon disable-prevents back-powering or latch-up in multi-rail systems. |
| Smart enable with pulldown | Integrated 500 kΩ EN pulldown prevents floating start-up; automatically disconnects after power-up to avoid leakage during active operation. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + 0.1 V-critical for brownout resilience in battery-powered systems nearing end-of-life. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing powered by coin cell or rechargeable Li-poly battery with multi-week standby. IC Role / Device Role: Primary system regulator supplying 1.8 V to MCU and analog front-end, dynamically switching between forced PWM (during active sensing) and power save mode (during sleep). Use Value: 2.3 µA quiescent current extends battery life beyond 30 days; 4 MHz switching enables <3 mm² total solution size including inductor and caps. |
Use Scenario: Ultra-low-power environmental sensor (temperature/humidity) transmitting data every 5 seconds via BLE. IC Role / Device Role: Single-supply buck converter delivering 3.3 V to BLE SoC and sensors, using VSEL/MODE pin to set fixed 3.3 V output with no external resistor. Use Value: Fixed 3.3 V option eliminates external resistor and saves PCB area; output discharge prevents sensor bias drift during radio transmit/receive transitions. |
| Smartwatch Display Power | Industrial Wireless Transmitter |
|
Use Scenario: OLED display backlight driver requiring clean, ripple-free 2.8 V rail with rapid load transients during frame updates. IC Role / Device Role: High-frequency (4 MHz) buck regulator operating in forced PWM mode to suppress switching noise coupling into sensitive display timing signals. Use Value: Forced PWM eliminates frequency modulation artifacts; ±1% VOUT accuracy ensures consistent brightness and color fidelity across temperature. |
Use Scenario: Battery-backed industrial transmitter operating in remote locations with wide temperature range (−40°C to +85°C). IC Role / Device Role: Main power converter supplying 2.5 V to microcontroller and LoRa transceiver, leveraging 100% duty cycle operation to sustain regulation as battery drops to 2.6 V. Use Value: Maintains functional VOUT until battery reaches UVLO threshold (1.75 V), maximizing usable energy; thermal shutdown (160°C) protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62808YKAR | Same 6-pin WCSP package and 1.8–3.3 V output range, but rated for 0.6 A and 1.5 MHz switching frequency. | Lower output current and reduced switching frequency limit inductor size flexibility and light-load efficiency. | Select TPS62808YKAR only if 0.6 A max load and relaxed transient response requirements allow larger inductors and higher output ripple. |
| TPS6208818RTER | 3 A, 2.5–5.5 V input, 1.8 V fixed output; 2-mm × 2-mm WSON package; 1.2 µA IQ; 2.5 MHz switching. | Higher current capability and different package footprint; lacks R2D programmability and output discharge. | Choose TPS6208818RTER when >1 A load or higher thermal margin is required, accepting loss of programmable VOUT and discharge functionality. |
Compared with TPS62808YKAR, the TPS62802YKAR delivers 67% higher output current and 2.7× faster switching for smaller passives, while retaining identical package and VOUT range; versus TPS6208818RTER, it trades current headroom for ultra-compact size, programmability, and integrated discharge-critical for wearables.
Availability
TPS62802YKAR is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and smartphone auxiliary power rails requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS62802YKAR 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 and embedded processing technologies, with over 50 years of power management innovation and broad automotive, industrial, and consumer design expertise.
The TPS6280x product line was engineered specifically for ultra-low-power, space-constrained portable electronics-delivering highest efficiency per mm² through DCS-Control, WCSP packaging, and intelligent feature integration like R2D and output discharge.
FAQ
What is the fixed output voltage of TPS62802YKAR when the VSEL/MODE pin is grounded?
The TPS62802YKAR has a factory-trimmed fixed output voltage of 1.8 V when the VSEL/MODE pin is connected directly to GND-no external resistor required. This configuration simplifies design for applications needing only that specific rail, such as powering 1.8 V I/O interfaces or low-voltage MCUs. The 1.8 V setting is confirmed in TI's Device Comparison Table and Section 4 of the datasheet.
Does TPS62802YKAR support output voltage discharge, and how is it implemented?
Yes, TPS62802YKAR supports active output voltage discharge via its dedicated VOS pin. When the device is disabled (EN = low), an internal MOSFET connects the VOS pin to GND, discharging the output capacitor through a typical 9 Ω on-resistance. This function activates only after the device has been enabled at least once since power-up and requires VIN above the UVLO falling threshold (1.56 V). It ensures VOUT ramps cleanly to 0 V, preventing back-powering of downstream circuitry.
What is the soft-start time of TPS62802YKAR, and how does it differ from other TPS6280x variants?
The TPS62802YKAR has a soft-start time (tSS) of 400–500 µs-longer than TPS62800/TPS62801 (125–170 µs) due to its wider output voltage range (1.8–3.3 V). This extended ramp minimizes inrush current when charging larger output capacitors common in higher-VOUT applications. The value is specified in Section 6.5 Electrical Characteristics and validated across temperature (–40°C to +125°C).
Can TPS62802YKAR operate with input voltage equal to its output voltage?
Yes, TPS62802YKAR supports 100% duty cycle operation, maintaining regulation even when VIN approaches VOUT (e.g., 1.85 V input for 1.8 V output). In this mode, the high-side MOSFET remains continuously on, eliminating switching losses and sustaining output under brownout conditions. This behavior is explicitly documented in Section 7.4.3 and enables extended battery runtime in single-cell systems.
What are the recommended external components for a basic TPS62802YKAR application?
A standard TPS62802YKAR design requires a 0.47 µH shielded inductor (e.g., TDK SPML2520-R47M), 4.7 µF X5R/X7R input capacitor, 10 µF X5R/X7R output capacitor, and optionally a 100 kΩ E96 resistor (1%) from VSEL/MODE to GND for 2.5 V output. Layout guidelines emphasize short SW and GND traces, direct VOS-to-COUT connection, and thermal pad soldering per TI's YKA mechanical drawing.
TPS62802YKAR 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)
TPS62802YKAR FAQ
1.How can I place an order for TPS62802YKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62802YKAR 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 TPS62802YKAR reliable?
The price and inventory of TPS62802YKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62802YKAR is usually 5 days.
3.What payment methods are accepted for TPS62802YKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62802YKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62802YKAR?
TPS62802YKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62802YKAR 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 TPS62802YKAR?
For technical support, including TPS62802YKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62802YKAR requirements.
6.How does Aetrix verify that TPS62802YKAR is sourced from the original manufacturer or authorized distributors?
All TPS62802YKAR 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 TPS62802YKAR meets industry standards.
7.What is the process for return or replacement of TPS62802YKAR?
All TPS62802YKAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62802YKAR, 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 TPS62802YKAR part is unused and in its original packaging.
Return procedure for TPS62802YKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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