My Inquiry
My Account
Texas Instruments TPS62801YKAR
- Part No.:
- TPS62801YKAR
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62801YKAR.pdf
- Description:
- IC REG BUCK ADJ/0.8V 1A 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:5,193
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62801YKAR 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 and 2.3 µA quiescent current - optimized for ultra-low-power wearable and IoT systems powered by 2×AA batteries or single-cell Li-ion.
For engineers reviewing the TPS62801YKAR datasheet, TPS62801YKAR pinout, TPS62801YKAR application, or TPS62801YKAR equivalent, this page delivers verified electrical specs, DCS-Control topology behavior, R2D-based VOUT configuration, forced-PWM/PSM mode selection, and validated alternative options for battery-constrained designs.
Technical Context
The TPS62801YKAR implements TI's DCS-Control topology with dual-loop regulation: an AC loop using the VOS pin for fast transient response and low ripple, and a DC voltage feedback loop with internal compensation enabling stable operation with small 0.47 µH inductors and 10 µF ceramic output capacitors. It supports seamless PFM-to-PWM transition across load range.
Its VSEL/MODE pin performs two time-separated functions: during startup, it acts as an R2D input to select one of 16 output voltages (0.8–1.55 V in 50-mV steps) via a single external resistor; after power-up, it becomes a digital control input to toggle between power-save mode (2.3 µA IQ) and forced PWM mode (4 MHz fixed frequency).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.75 V to 5.5 V - supports direct connection to single-cell Li-ion (3.0–4.2 V), 2×AA alkaline (2.4–3.2 V), or USB-powered rails without pre-regulation. |
| Output Voltage Range | 0.8 V to 1.55 V in 50-mV steps - fixed 1.2 V when VSEL/MODE tied to GND; enables precise core voltage scaling for low-power MCUs and sensors. |
| Max Output Current | 1 A continuous - sufficient for ARM Cortex-M4/M33 microcontrollers, BLE SoCs, and display drivers in compact wearables. |
| Quiescent Current | 2.3 µA in power-save mode - extends battery life in always-on sensor nodes; measured at no load, VOUT = 1.2 V, TJ = 25°C. |
| Switching Frequency | 4 MHz nominal in forced PWM mode - allows use of sub-1 mm height 0.47 µH inductors and < 5 mm² total solution size. |
| Output Accuracy | ±1% at 0 mA, 25–85°C - tighter than external resistor-divider-based regulators, eliminating calibration overhead in production. |
| Package | 6-pin DSBGA (YKA), 1.05 mm × 0.70 mm, 0.35 mm pitch - supports < 0.6 mm board height and automated assembly with 0201 passives. |
Pinout & Package
TPS62801YKAR uses a 6-pin, 0.35 mm pitch wafer-chip-scale package (DSBGA YKA), measuring 1.05 mm × 0.70 mm with solder bumps on bottom side. The package supports ultra-thin (< 0.6 mm) PCB designs and is compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Power ground | Primary return path for VIN, VOS, and SW currents; must be connected near input/output capacitor GND pads to minimize noise and EMI. |
| VIN (B1) | Input power supply | Accepts 1.75–5.5 V; requires local 4.7 µF ceramic capacitor placed adjacent to reduce high-frequency switching noise. |
| VSEL/MODE (C1) | Configurable I/O | During startup: reads external resistor to set VOUT (0.8–1.55 V); post-startup: digital input to select PSM (low) or forced PWM (high). |
| VOS (A2) | Output voltage sense | Connects directly to output capacitor; enables internal feedback and activates discharge MOSFET when EN = low to rapidly collapse VOUT. |
| SW (B2) | Switch node | Drives external 0.47 µH inductor; high dv/dt node requiring short, low-inductance trace routing and guard ring isolation. |
| EN (C2) | Enable control | Active-high logic input with internal 500 kΩ pulldown; ensures safe default-off state; transitions cleanly between shutdown and regulation. |
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. |
| R2D (resistor-to-digital) converter | Replaces external feedback divider with single 1% E96 resistor (10–249 kΩ), improving VOUT accuracy and reducing BOM count and layout area. |
| Output discharge via VOS pin | Internal MOSFET discharges VOUT to < 100 mV within 1 ms when EN = low - prevents back-powering or latch-up in multi-rail systems. |
| 100% duty-cycle operation | Maintains regulation down to VIN ≈ VOUT + 0.1 V - enables extended battery runtime in deep-discharge conditions (e.g., 1.8 V cutoff with 1.2 V rail). |
| Smart enable with pulldown control | Internal 500 kΩ resistor holds EN low at startup; automatically disconnects after power-up to avoid false triggering from floating traces. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with ARM Cortex-M4 MCU, optical sensors, and BLE radio operating from coin cell or 2×AA batteries. IC Role / Device Role / Timing Role: Primary power regulator supplying 1.2 V to MCU core and 1.8 V peripherals (via secondary LDO), dynamically adjusting mode based on activity state. Use Value: 2.3 µA quiescent current extends shelf life >2 years; 4 MHz switching enables < 3 mm² solution size fitting inside wristband enclosures. |
Use Scenario: Battery-powered environmental sensor (temp/humidity/pressure) transmitting data every 5 seconds via Nordic nRF52840. IC Role / Device Role / Timing Role: Single-rail 1.2 V supply for SoC and analog front-end; forced PWM mode activated only during BLE transmit bursts to suppress RF interference. Use Value: Seamless PFM→PWM transition avoids output voltage dip during TX; ±1% VOUT accuracy ensures consistent ADC reference and radio performance. |
| Smartwatch Display Subsystem | Low-Power Industrial Data Logger |
Use Scenario: Driving OLED display driver IC (e.g., SSD1322) and touch controller from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Generates stable 1.2 V logic rail; VSEL/MODE resistor sets fixed 1.2 V output while enabling dynamic mode switching during display refresh cycles. Use Value: 125 µs soft-start prevents inrush current into display capacitance; DCS-Control maintains < 5 mV ripple during 100 mA pulse loads. |
Use Scenario: Remote temperature/humidity logger powered by AA batteries, waking every 60 s to sample and transmit via LoRaWAN. IC Role / Device Role / Timing Role: Supplies 1.2 V to ultra-low-power MCU (e.g., STM32L4+) and precision ADC; operates in PSM 99.9% of time, switching to PWM only during active measurement. Use Value: 2.3 µA IQ reduces average system current to < 5 µA; output discharge ensures clean reset between wake cycles without external circuitry. |
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 0.8–1.55 V VOUT range, but rated for 0.6 A max and 1.5 MHz fSW - higher inductor DCR tolerance, lower peak efficiency above 300 mA. | Targeted at lower-current BLE peripherals or sensors where 4 MHz EMI sensitivity is not critical and cost reduction is prioritized. | Select TPS62807YKAR only if output current demand stays ≤ 600 mA and board-level EMI filtering constraints allow 1.5 MHz operation. |
| TPS6208818RTER | 3 A, 2.5–6 V input, 1.8 V fixed output in 3-mm² QFN; 1.2 µA IQ but no R2D or VOS discharge; requires external feedback resistors. | Suitable for higher-power industrial controllers needing 1.8 V rail with longer battery life, but lacks programmable VOUT and fast discharge capability. | Choose TPS6208818RTER when >1 A load, fixed 1.8 V output, and minimal IQ dominate requirements - not for flexible VOUT or discharge-critical systems. |
Compared with TPS62807YKAR and TPS6208818RTER, the TPS62801YKAR uniquely combines 1 A capability, 4 MHz switching, R2D-based VOUT programming, and integrated VOS discharge in a < 0.7 mm² footprint - making it optimal for space- and battery-limited wearable designs requiring multiple precise voltage rails.
Availability
TPS62801YKAR 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 consistent parametric performance across production batches.
Supply support for TPS62801YKAR 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 over 50 years of innovation in energy-efficient power conversion and signal chain solutions.
The TPS6280x family was designed specifically for ultra-low-power, space-constrained portable electronics - delivering industry-leading quiescent current, smallest possible solution size, and flexible output configuration without sacrificing regulation accuracy or transient performance.
FAQ
What is the fixed output voltage of TPS62801YKAR when VSEL/MODE is grounded?
The TPS62801YKAR delivers a fixed 1.2 V output when the VSEL/MODE pin is connected directly to GND. This eliminates the need for an external resistor and simplifies design for applications requiring only that specific rail. The 1.2 V setting is factory-trimmed and maintains ±1% accuracy across temperature and load, as confirmed in the device comparison table and Section 5.2 of the datasheet.
Can TPS62801YKAR operate with input voltage as low as 1.75 V while delivering full 1 A output?
TPS62801YKAR supports 1.75 V minimum input, but its maximum 1 A output current is specified only when VIN ≥ 2.3 V per Section 6.3 Recommended Operating Conditions. Below 2.3 V, output current derates to 0.7 A to maintain regulation and thermal safety. At VIN = 1.8 V and VOUT = 1.2 V, the device enters 100% duty cycle mode and sustains ~700 mA continuously with proper thermal layout.
How does the R2D converter in TPS62801YKAR determine output voltage, and what resistor tolerance is required?
The TPS62801YKAR's R2D converter applies a precision current source to the external resistor (RVSEL) connected between VSEL/MODE and GND, measures the resulting voltage, and selects one of 16 internal feedback dividers. It requires E96-series 1% tolerance resistors (10–249 kΩ) with ±200 ppm/°C TCR, as specified in Table 5-2 and Section 7.3.3.1 - deviations beyond this cause incorrect VOUT selection.
Does TPS62801YKAR provide output voltage discharge, and under what conditions is it active?
Yes, TPS62801YKAR provides active output discharge via an internal MOSFET connected to the VOS pin. Discharge activates only after the device has been enabled at least once since VIN application - it pulls VOUT to < 100 mV within 1 ms when EN goes low. It remains inactive during first-power-up if EN is held low, and requires VIN > 1.7 V (UVLO threshold) to function.
What is the soft-start time of TPS62801YKAR, and how is it affected by VSEL selection?
The TPS62801YKAR has a typical soft-start time (tSS) of 125 µs - defined as the interval from VOUT = 0 V to 95% of final regulated voltage. This value is fixed for all VSEL selections (0–16) and is independent of the chosen output voltage. However, the preceding start-up delay (tStartup_delay), which includes R2D conversion, varies from 500 µs (VSEL = 0) to 1100 µs (VSEL = 16), as documented in Section 6.5 Electrical Characteristics.
TPS62801YKAR 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)
TPS62801YKAR FAQ
1.How can I place an order for TPS62801YKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62801YKAR 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 TPS62801YKAR reliable?
The price and inventory of TPS62801YKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62801YKAR is usually 5 days.
3.What payment methods are accepted for TPS62801YKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62801YKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62801YKAR?
TPS62801YKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62801YKAR 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 TPS62801YKAR?
For technical support, including TPS62801YKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62801YKAR requirements.
6.How does Aetrix verify that TPS62801YKAR is sourced from the original manufacturer or authorized distributors?
All TPS62801YKAR 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 TPS62801YKAR meets industry standards.
7.What is the process for return or replacement of TPS62801YKAR?
All TPS62801YKAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62801YKAR, 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 TPS62801YKAR part is unused and in its original packaging.
Return procedure for TPS62801YKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62801YKAR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
