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Texas Instruments TPS62840YBGR
- Part No.:
- TPS62840YBGR
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS62840YBGR.pdf
- Description:
- IC REG BUCK ADJ 750MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:6,115
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Product details
Overview
TPS62840YBGR from Texas Instruments is a synchronous step-down DC/DC converter optimized for ultra-low-power battery-operated systems, featuring 60-nA operating quiescent current, 750-mA output current capability, 1.8-V to 6.5-V input voltage range, and 16 selectable output voltages via VSET resistor programming - deployed in wearable medical sensors and industrial IoT edge nodes.
For engineers reviewing the TPS62840YBGR datasheet, TPS62840YBGR pinout, TPS62840YBGR application, or TPS62840YBGR equivalent, key selection considerations include its WCSP-6 package footprint, absence of MODE and STOP pins (unlike DLC/DGR variants), VSET-based voltage selection, 100% duty-cycle mode with 120-nA IQ, and RF-friendly DCS-Control™ operation at 1.8 MHz.
Technical Context
The TPS62840YBGR implements TI's DCS-Control™ topology with dual-loop regulation: a fast AC loop sensing VOS for transient response and ripple suppression, plus a DC loop for precise load/line regulation. It operates in Power-Save Mode (PFM/PWM auto-transition) by default, as the MODE pin is not available in the YBG package.
Its 6-pin WCSP-6 (0.97 mm × 1.47 mm) lacks MODE and STOP pins - eliminating forced-PWM and noise-free measurement modes present in SON-8 and HVSSOP-8 variants. Output voltage is set once at startup via R2D conversion of the external VSET resistor, with strict ≤100-pF parasitic capacitance requirement to prevent misconfiguration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 6.5 V - supports single-cell Li-Ion/Li-SOCl₂, 2–4S alkaline, or 1–2S Li-MnO₂ batteries without external regulators. |
| Quiescent Current (IQ) | 60 nA typical - enables multi-year battery life in always-on sensor nodes drawing microampere loads. |
| Output Current | 750 mA maximum - sufficient for low-power MCUs, BLE radios, and analog front-ends in compact wearables. |
| Switching Frequency | 1.8 MHz nominal - allows use of small 2.2-µH inductors and 10-µF ceramic output capacitors for space-constrained designs. |
| VSET Voltage Selection | 16 discrete outputs (1.8 V to 3.3 V in 100-mV steps) - configured by E96-series resistor to GND, read once at startup. |
| Shutdown Current | 25 nA - ensures minimal battery drain during deep sleep or system off states. |
| Package | WCSP-6 (YBG), 0.97 mm × 1.47 mm - ultra-small footprint ideal for medical patches and miniaturized IoT endpoints. |
| Thermal Resistance | RθJA = 133.4 °C/W (JEDEC PCB 51-5) - requires careful thermal layout due to lack of exposed pad (no EP pin in YBG). |
Pinout & Package
TPS62840YBGR uses a 6-pin Wafer Chip Scale Package (WCSP-6, YBG) with 0.4-mm pitch and no exposed thermal pad. Pin functions are validated per TI SLVSEC6D datasheet Section 6: all six terminals are electrically connected and assigned.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Connects to battery or source; requires 4.7-µF ceramic capacitor placed adjacent to minimize noise and voltage spikes. |
| GND | Ground reference | Common return path for input/output capacitors and IC substrate; must be low-impedance and directly tied to PCB ground plane. |
| EN | Enable control | Active-high logic input with internal 450-kΩ pulldown; enables soft-start sequence when pulled high; disconnects pulldown after regulation. |
| SW | Switch node | Drives external 2.2-µH inductor; connects internally to high- and low-side MOSFETs; requires short, low-inductance trace to inductor. |
| VSET | Voltage selection | Resistor-to-ground sets output voltage via one-time R2D conversion at startup; parasitic capacitance must stay ≤100 pF. |
| VOS | Output voltage sense | Direct connection to output capacitor; provides feedback for regulation and enables output discharge when EN = GND. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 60-nA operating current extends battery life in always-on applications such as patient monitors and asset trackers. |
| 100% duty-cycle mode | 120-nA IQ at VIN = VOUT enables end-of-battery-life operation down to ~1.8 V with minimal dropout loss. |
| DCS-Control™ topology | Combines hysteretic speed and voltage-mode stability for <10-mV load transients and <10-mVpp output ripple at 1.8 MHz. |
| Output discharge function | Internal MOSFET sinks up to 44 mA from VOS to rapidly discharge VOUT when disabled - critical for safety-critical power sequencing. |
| VSET-based voltage selection | Eliminates external feedback resistors; reduces BOM count and layout area while supporting 16 factory-trimmed output options. |
| RF-friendly switching | No frequency dithering or spread-spectrum, yet achieves clean spectral profile suitable for co-location with sub-GHz radios (e.g., NB-IoT, LoRa). |
Applications
| Smart Medical Patches | Industrial Wireless Sensors |
|---|---|
|
Use Scenario: Continuous ECG or temperature monitoring on disposable skin patches powered by coin-cell batteries. IC Role / Device Role / Timing Role: Primary power regulator delivering stable 1.8 V or 2.2 V to ultra-low-power MCU and analog front-end. Use Value: 60-nA IQ enables >5-year runtime on CR2032; WCSP-6 footprint fits sub-100-mm² form factor; VSET eliminates trimming resistors. |
Use Scenario: Battery-powered vibration or gas sensors in hazardous ATEX-certified environments. IC Role / Device Role / Timing Role: Efficient step-down supply for low-duty-cycle LoRaWAN transceivers and MEMS accelerometers. Use Value: 1.8–6.5 V input range accepts aging primary cells; 750-mA peak supports radio transmit bursts; shutdown current <30 nA prevents leakage drain. |
| Wearable Fitness Trackers | Smart Utility Meters |
|
Use Scenario: Compact wrist-worn devices with optical heart-rate sensors and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Single-output buck converter powering mixed-signal SoC with dynamic voltage scaling requirements. Use Value: DCS-Control™ ensures <5-mV load transient deviation during LED flash pulses; 1.8 MHz switching avoids audible noise and simplifies EMI filtering. |
Use Scenario: AMI (Advanced Metering Infrastructure) endpoint modules requiring decades-long field deployment on lithium-thionyl chloride cells. IC Role / Device Role / Timing Role: Long-life power management IC enabling meter wake-up, measurement, and RF transmission cycles. Use Value: 120-nA 100% duty-cycle mode sustains operation below 2.0 V; UVLO thresholds (1.72 V rise / 1.45 V fall) prevent brownout resets during cold starts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DLC | SON-8 package with MODE and STOP pins; includes forced-PWM and noise-free STOP modes absent in YBG. | Required where test-and-measurement noise immunity or dynamic PWM/PSM control is needed. | Select DLC if board space permits larger package and STOP/MODE functionality is essential. |
| TPS62841YBG | Same WCSP-6 package but supports 0.8–1.55 V outputs (50-mV steps); lower VOUT range optimized for core-rail MCUs. | Suitable for low-voltage digital subsystems (e.g., Cortex-M0+ cores), not for 1.8+ V analog/peripheral rails. | Choose TPS62841YBG only when target output is ≤1.55 V and VSET resistor values match Table 1 column for YBG. |
Compared with TPS62840YBGR, the DLC variant adds functional flexibility at the cost of larger size and higher minimum component count, while TPS62841YBG trades output voltage range for identical ultra-low-power performance in smaller-footprint digital applications.
Availability
TPS62840YBGR is available at Aetrix Electronics and suitable for smart medical patches, industrial wireless sensors, and wearable fitness trackers requiring stable component supply across long-lifecycle deployments.
Supply support for TPS62840YBGR 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 90 years of innovation in energy-efficient electronics.
The TPS62840 family is designed specifically for battery-powered IoT endpoints demanding nanowatt quiescent operation, minimal footprint, and robust performance across extreme temperature and voltage ranges.
FAQ
What is the quiescent current specification for TPS62840YBGR under no-load conditions?
The TPS62840YBGR delivers a typical operating quiescent current of 60 nA when enabled, measured at VIN = 3.6 V, VOUT = 1.8 V, and IOUT = 0 µA with device switching. This value is confirmed in TI's SLVSEC6D datasheet Section 7.5, and represents one of the lowest IQ figures among production buck converters for battery longevity.
Does TPS62840YBGR support forced-PWM mode like other variants in the family?
No, TPS62840YBGR does not support forced-PWM mode because the MODE pin is not implemented in the WCSP-6 (YBG) package. The device operates exclusively in Power-Save Mode with automatic PFM/PWM transition - a design choice that reduces package complexity and maintains ultra-low IQ without sacrificing light-load efficiency.
How is output voltage programmed on TPS62840YBGR, and what resistor tolerance is required?
TPS62840YBGR uses a single external resistor (RSET) between VSET and GND to select one of 16 predefined output voltages (1.8 V to 3.3 V in 100-mV steps). TI specifies ±1% tolerance for RSET and limits parasitic capacitance to ≤100 pF; deviations risk incorrect R2D conversion and invalid output voltage setup during startup.
What is the maximum output current capability of TPS62840YBGR, and how does it vary with input voltage?
The TPS62840YBGR delivers up to 750 mA of continuous output current across its full 1.8–6.5 V input range. Internal current limits (ILIMF = 1.2 A typical) remain consistent regardless of VIN; however, achievable output current at low VIN (e.g., 1.8 V) may be thermally limited due to higher input current and reduced efficiency - consult thermal derating curves in Section 7.4 of the datasheet.
Is there a STOP pin on TPS62840YBGR for noise-free measurements?
No, the STOP pin is not present on TPS62840YBGR. It is only available on the SON-8 (DLC) and HVSSOP-8 (DGR) package variants. The YBG package omits both STOP and MODE pins to achieve its ultra-compact 0.97 mm × 1.47 mm footprint - meaning noise-sensitive measurement sequences must rely on controlled EN toggling or external supply isolation.
TPS62840YBGR 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
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 750mA
- Frequency - Switching:
- 1.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA (0.97x1.47)
TPS62840YBGR FAQ
1.How can I place an order for TPS62840YBGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62840YBGR 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 TPS62840YBGR reliable?
The price and inventory of TPS62840YBGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62840YBGR is usually 5 days.
3.What payment methods are accepted for TPS62840YBGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62840YBGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62840YBGR?
TPS62840YBGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62840YBGR 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 TPS62840YBGR?
For technical support, including TPS62840YBGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62840YBGR requirements.
6.How does Aetrix verify that TPS62840YBGR is sourced from the original manufacturer or authorized distributors?
All TPS62840YBGR 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 TPS62840YBGR meets industry standards.
7.What is the process for return or replacement of TPS62840YBGR?
All TPS62840YBGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62840YBGR, 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 TPS62840YBGR part is unused and in its original packaging.
Return procedure for TPS62840YBGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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