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Texas Instruments TPS62801YKAT
- Part No.:
- TPS62801YKAT
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62801YKAT.pdf
- Description:
- IC REG BUCK ADJ/0.8V 1A 6DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS62801YKAT from Texas Instruments is a 4 MHz, 1 A synchronous step-down DC/DC converter in a 0.35 mm pitch WCSP package, delivering 0.8 V to 1.55 V output with ±1% accuracy in forced PWM mode and 2.3 µA quiescent current in power save mode. It serves as the primary voltage regulator for ultra-low-power wearable sensors and IoT edge nodes powered by 2×AA batteries or single-cell Li-ion.
For engineers reviewing the TPS62801YKAT datasheet, TPS62801YKAT pinout, TPS62801YKAT application, or TPS62801YKAT equivalent, this page delivers verified electrical parameters, DCS-Control topology behavior, R2D-based VOUT configuration, thermal shutdown response, and validated alternative options for battery-constrained designs requiring <5 mm² footprint and <0.6 mm height.
Technical Context
The TPS62801YKAT implements TI's DCS-Control topology with dual-loop regulation: an AC path via the VOS pin enables immediate transient response and low output ripple, while a DC feedback loop ensures stable regulation across load and temperature. Its R2D (resistor-to-digital) converter reads a single external E96 resistor (10–249 kΩ) on the VSEL/MODE pin to select one of 16 output voltages within 0.8–1.55 V at 50-mV steps-or defaults to 1.20 V when tied to GND.
In operation, it supports seamless PFM-to-PWM transition: at light loads (<1 mA), it enters power save mode with 2.3 µA IQ and variable-frequency switching; above ~10 mA, it shifts to fixed 4 MHz forced PWM mode for RF-sensitive applications. Thermal shutdown activates at 160°C with 20°C hysteresis, and output discharge engages via the VOS pin upon disable-only after initial enablement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75 V to 5.5 V - supports direct regulation from single-cell Li-ion (3.0–4.2 V), 2×AA alkaline (2.0–3.2 V), or USB-supplied 5 V rails without pre-regulation. |
| Output Voltage Range | 0.8 V to 1.55 V in 50-mV steps - covers core logic (0.8–1.2 V), I/O (1.2–1.5 V), and memory interface rails for modern microcontrollers and BLE SoCs. |
| Max Output Current | 1 A - sustains peak processor bursts in wearables and sensor hubs without thermal derating under typical PCB layout conditions. |
| Quiescent Current | 2.3 µA in power save mode - extends battery life in always-on sensing applications (e.g., 10-year runtime on CR2032 at 1 µA avg load). |
| Switching Frequency | 4 MHz (PWM mode) - enables use of 0.47 µH inductors and 10 µF ceramic output capacitors, minimizing solution size to <5 mm². |
| Output Accuracy | ±1% at 0 mA, 25°C to 85°C - eliminates need for post-production trimming in production-grade wearable firmware stacks. |
| Package | 6-pin DSBGA (YKA), 1.05 mm × 0.70 mm, 0.35 mm pitch - compatible with 0201 passives and supports <0.6 mm board height for slim form factors. |
Pinout & Package
TPS62801YKAT uses a 6-pin, 0.35 mm pitch wafer-level chip-scale package (DSBGA YKA), measuring 1.05 mm × 0.70 mm with solder bumps on bottom side. The package supports automated reflow assembly and is optimized for minimal PCB area and height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Power ground reference | Must be connected directly to input/output capacitor ground pads; serves as return path for high-frequency switch currents and internal discharge MOSFET. |
| VIN (B1) | Main power input | Accepts 1.75–5.5 V; requires 4.7 µF ceramic capacitor placed adjacent to minimize VIN ripple and EMI during switching transitions. |
| VSEL/MODE (C1) | Configurable control input | During startup: sets VOUT via R2D conversion using external resistor (10–249 kΩ); after startup: selects power save (low) or forced PWM (high) mode. |
| VOS (A2) | Output voltage sense & discharge | Connects directly to output capacitor; provides feedback for regulation and activates internal 7–11 Ω discharge MOSFET when EN = low (after first enable). |
| SW (B2) | Switch node | Drives external 0.47 µH inductor; exhibits fast-edge switching (≤10 ns) and requires tight layout to minimize EMI and ringing. |
| EN (C2) | Enable control | Active-high with internal 500 kΩ pulldown; rising edge initiates startup sequence including tStartup_delay (500–1100 µs) and tSS (125 µs soft-start). |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Combines hysteretic speed and voltage-mode stability: achieves <10 µs load transient recovery and <10 mV output ripple at 100 mA step load with 4 MHz switching. |
| R2D output voltage selection | Replaces traditional resistor divider with single external E96 resistor (1% tolerance), eliminating feedback network error and reducing BOM count by one component. |
| Output discharge via VOS pin | Internally discharges VOUT to near 0 V upon disable-only after first enable-preventing back-powering of downstream circuitry in multi-rail systems. |
| Smart enable with pulldown | Internal 500 kΩ EN pulldown prevents floating start-up; pulldown disconnects after power-up to avoid interference with active-high host control signals. |
| 100% duty cycle operation | Maintains regulation down to VIN ≈ VOUT + 0.1 V (e.g., 1.25 V out from 1.35 V input), extending usable battery range in deeply discharged states. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing with ARM Cortex-M0+ MCU and analog front-end, powered by coin cell or 2×AA batteries. IC Role / Device Role / Timing Role: Primary system regulator supplying 1.2 V to MCU core and 1.5 V to analog subsystem, dynamically adjusting between PFM (sleep) and PWM (active sensing) modes. Use Value: 2.3 µA quiescent current extends battery life to >3 years; 4 MHz switching allows 0.47 µH inductor and 10 µF output cap, enabling sub-5 mm² total solution size. |
Use Scenario: Battery-powered environmental sensor (temperature/humidity/pressure) transmitting data via Bluetooth Low Energy every 5 seconds. IC Role / Device Role / Timing Role: Single-rail buck converter generating stable 1.2 V for nRF52832 SoC, with forced PWM mode activated during radio transmit bursts to suppress switching noise in 2.4 GHz band. Use Value: Fixed 4 MHz frequency avoids spectral overlap with BLE channels; ±1% VOUT accuracy ensures consistent ADC reference and RF oscillator performance. |
| Smartwatch Display Power | Industrial Wireless Transmitter |
|
Use Scenario: OLED display backlight driver IC requiring tightly regulated 1.2 V bias rail alongside higher-voltage boost converters. IC Role / Device Role / Timing Role: Secondary low-noise supply rail generator with output discharge to prevent ghosting during display sleep/wake transitions. Use Value: VOS pin-controlled discharge reduces VOUT decay time to <1 ms, eliminating visual artifacts; 0.6 mm max height fits constrained watch stack-up. |
Use Scenario: LoRaWAN end-node in remote monitoring application, operating on AA batteries in -40°C to +85°C industrial environments. IC Role / Device Role / Timing Role: Main power regulator for SX1276 transceiver and STM32L4 MCU, leveraging thermal shutdown (160°C) and wide TJ range (-40°C to +125°C) for unattended operation. Use Value: 1 A capability handles 120 mA LoRa transmit peaks; DCS-Control maintains >85% efficiency at 100 µA load, critical for multi-year deployments. |
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 YKA package and 0.8–1.55 V output range, but rated for 0.6 A and 1.5 MHz switching frequency. | Better suited for lower-current, noise-tolerant applications where 4 MHz EMI is undesirable; reduced inductor size (0.7–1.2 µH) eases layout. | Select TPS62807YKAT when peak load ≤600 mA and board space allows larger inductor; retain same resistor network and PCB footprint. |
| TPS6208818YKAR | 0.6 A, 2.5–6.0 V input, 1.8 V fixed output, 2.5 µA IQ, 2.25 MHz fSW, same YKA-6 package. | Fixed 1.8 V output eliminates R2D configuration complexity; higher VIN range supports wider battery chemistries (e.g., 3×AA). | Choose TPS6208818YKAR for fixed 1.8 V rails where design simplicity and extended input range outweigh programmable VOUT flexibility. |
Compared with TPS62801YKAT, TPS62807YKAT trades 400 mA current headroom and 2.5 MHz higher switching frequency for lower EMI and relaxed inductor requirements, while TPS6208818YKAR sacrifices output programmability for broader input range and identical package compatibility-making all three viable for compact, battery-operated systems with distinct load and noise priorities.
Availability
TPS62801YKAT is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and smartphone auxiliary power rails requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS62801YKAT 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 personal electronics market presence.
The TPS6280x product line was designed specifically for ultra-small, ultra-low-power battery-operated devices-prioritizing sub-5 mm² solution size, <0.6 mm height, and nanoampere-level quiescent current without sacrificing 1 A output capability or regulation accuracy.
FAQ
What is the exact output voltage range supported by the TPS62801YKAT?
The TPS62801YKAT supports a fixed 1.20 V output when the VSEL/MODE pin is tied to GND, or 16 selectable output voltages from 0.8 V to 1.55 V in 50-mV increments using an external E96 resistor (10–249 kΩ). This range targets core logic and I/O rails of modern low-voltage MCUs and wireless SoCs, with ±1% accuracy in PWM mode across –40°C to +85°C.
How does the R2D converter in the TPS62801YKAT determine output voltage?
The TPS62801YKAT's R2D (resistor-to-digital) converter applies a precise internal current source to the external resistor connected between VSEL/MODE and GND during startup, measures the resulting voltage, and selects one of 16 internal feedback divider ratios accordingly. This occurs within the 500–1100 µs startup delay and requires ≤30 pF parasitic capacitance for accuracy-eliminating external resistors in the feedback path and improving VOUT stability.
Does the TPS62801YKAT support output voltage discharge, and how is it controlled?
Yes, the TPS62801YKAT provides output discharge via the VOS pin-but only after the device has been enabled at least once since VIN application. When EN is pulled low, an internal 7–11 Ω MOSFET connects VOS to GND, discharging the output capacitor. This function is disabled during first-power-up and requires VIN > 1.56 V (UVLO– threshold) to remain active, preventing unintended discharge during brownout.
What thermal protection features does the TPS62801YKAT include?
The TPS62801YKAT integrates thermal shutdown that disables both high- and low-side MOSFETs when junction temperature exceeds 160°C (typical), with 20°C hysteresis. Recovery begins only after temperature falls below 140°C, followed by full soft-start to the originally configured VOUT. Notably, thermal shutdown is inactive in power save mode, preserving ultra-low IQ operation during light-load conditions.
Can the TPS62801YKAT operate with input voltage close to its output voltage?
Yes, the TPS62801YKAT supports 100% duty cycle operation, maintaining regulation as VIN approaches VOUT + 0.1 V (e.g., 1.25 V output from 1.35 V input). This extends usable battery life in deeply discharged states-critical for 2×AA or coin-cell applications-by avoiding dropout-induced reset or brownout events before full battery depletion.
TPS62801YKAT 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):
- 0.8V (1.2V)
- Voltage - Output (Max):
- 1.55V
- 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)
TPS62801YKAT FAQ
1.How can I place an order for TPS62801YKAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62801YKAT 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 TPS62801YKAT reliable?
The price and inventory of TPS62801YKAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62801YKAT is usually 5 days.
3.What payment methods are accepted for TPS62801YKAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62801YKAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62801YKAT?
TPS62801YKAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62801YKAT 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 TPS62801YKAT?
For technical support, including TPS62801YKAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62801YKAT requirements.
6.How does Aetrix verify that TPS62801YKAT is sourced from the original manufacturer or authorized distributors?
All TPS62801YKAT 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 TPS62801YKAT meets industry standards.
7.What is the process for return or replacement of TPS62801YKAT?
All TPS62801YKAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62801YKAT, 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 TPS62801YKAT part is unused and in its original packaging.
Return procedure for TPS62801YKAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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