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Texas Instruments TPS62841DGRR
- Part No.:
- TPS62841DGRR
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS62841DGRR.pdf
- Description:
- IC REG BUCK PROG 750MA 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,826
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Product details
Overview
TPS62841DGRR from Texas Instruments is a synchronous step-down DC-DC converter optimized for ultra-low-power battery-operated systems, delivering up to 750 mA output current with 60 nA typical quiescent current (IQ), 1.8 V to 6.5 V input range, and 0.8 V to 1.55 V output voltage selectable via external resistor on VSET pin. It enables long-life operation in medical sensor patches and industrial IoT edge nodes.
For engineers reviewing the TPS62841DGRR datasheet, TPS62841DGRR pinout, TPS62841DGRR application, or TPS62841DGRR equivalent, key selection criteria include its 120 nA 100% duty-cycle IQ, DCS-Control™ topology for RF-friendly transient response, STOP pin for noise-free measurement windows, and HVSSOP-8 thermal performance (RθJA = 54.4°C/W).
Technical Context
The TPS62841DGRR implements TI's DCS-Control™ architecture-combining hysteretic and voltage-mode control-to achieve seamless PFM/PWM transition, <1% output voltage ripple, and fast load transient response (<10 µs settling). Its R2D (resistor-to-digital) converter reads VSET resistance during startup to configure one of 16 output voltages within 0.8 V–1.55 V range.
It features dual-quiescent-current paths: IQ_VIN (36–360 nA) and IQ_VOS (56–170 nA), enabling system-level optimization by routing bias current through either VIN or VOS depending on rail constraints. The STOP pin disables switching instantly while maintaining regulated output from output capacitor charge, critical for precision analog acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 6.5 V - supports 2S alkaline, 1S Li-MnO₂, or 1S Li-SOCl₂ batteries without external regulators. |
| Output Current | 750 mA - sufficient to power microcontrollers, BLE radios, and analog front-ends simultaneously. |
| Quiescent Current (IQ) | 60 nA typical - extends shelf life and runtime in always-on sensor nodes drawing µA average current. |
| 100% Duty-Cycle IQ | 120 nA - sustains regulation near battery end-of-discharge when VIN ≈ VOUT, minimizing brownouts. |
| Switching Frequency | 1.8 MHz nominal - enables use of small 2.2 µH inductors and 10 µF ceramic output capacitors. |
| Output Voltage Accuracy | ±2% for VOUT ≤ 1.55 V - ensures reliable logic-level compatibility with low-voltage MCUs and sensors. |
| Shutdown Current | 25 nA - preserves battery energy during deep sleep or storage modes. |
Pinout & Package
HVSSOP-8 (DGR) package: 3 mm × 5 mm body, exposed thermal pad (EP) connected to GND for enhanced thermal dissipation (RθJB = 25.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply connection; requires 4.7 µF ceramic capacitor placed adjacent for EMI suppression and voltage stability. |
| GND | Power Ground | Common reference for all power and signal paths; must be tied directly to EP for optimal thermal and electrical performance. |
| SW | Power Switch Node | Connection point for external inductor; carries high di/dt switching current - requires short, wide trace to minimize ringing. |
| VOS | Output Voltage Sense & Discharge | Feedback node for regulation loop; internally discharges VOUT when EN = GND - connect directly to output capacitor anode. |
| VSET | Output Voltage Selection | Analog input for resistor-based voltage programming; reads E96-series RSET (0.909 kΩ–267 kΩ) during startup only - keep parasitic capacitance <100 pF. |
| EN | Enable Control | Active-high logic input with internal 450 kΩ pulldown; disconnects pulldown after regulation - allows safe default-off behavior. |
| MODE | Operating Mode Select | Logic input: GND = auto PFM/PWM transition; VIN = forced PWM - enables ripple-sensitive applications without layout change. |
| STOP | Noise-Free Operation Control | Active-high pin that halts switching immediately; maintains VOUT from CO charge - essential for ADC calibration and precision measurements. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <10 µs load transient recovery and <10 mV peak-to-peak ripple at 100 mA, eliminating need for post-regulation LDOs in RF-sensitive designs. |
| 16-step VSET programmability | Supports precise voltage matching to MCU core, sensor bias, or analog circuitry using single E96 resistor - no firmware or EEPROM required. |
| STOP pin functionality | Provides deterministic, zero-switching-noise window for high-resolution ADC sampling or RF transmit/receive isolation without software intervention. |
| 100% duty-cycle mode | Maintains regulation down to VIN − VOUT < 50 mV, extending usable battery capacity by up to 15% in Li-SOCl₂ systems. |
| Output discharge via VOS | Actively sinks up to 44 mA into VOS pin during shutdown - prevents floating outputs and ensures predictable power sequencing. |
Applications
| Medical Sensor Patches | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Continuous ECG/temperature monitoring patch powered by coin cell for 6+ months. IC Role / Device Role / Timing Role: Primary power regulator supplying 1.2 V to ultra-low-power MCU and analog front-end. Use Value: 60 nA IQ minimizes self-discharge; STOP pin enables artifact-free ECG sampling during active switching phases. |
Use Scenario: Wireless vibration sensor node deployed in hazardous ATEX environments with 10-year battery life target. IC Role / Device Role / Timing Role: System power manager converting 3.6 V Li-SOCl₂ to 1.1 V for MEMS accelerometer and sub-GHz transceiver. Use Value: 120 nA 100% mode sustains regulation as battery decays to 1.15 V; UVLO hysteresis prevents oscillation near cutoff. |
| Smart Thermostats | Asset Tracking Devices |
Use Scenario: Battery-powered HVAC controller performing periodic temperature/humidity readings and BLE advertising. IC Role / Device Role / Timing Role: Always-on buck converter powering real-time clock, sensors, and BLE SoC in deep-sleep cycles. Use Value: Auto PFM/PWM transition maintains >85% efficiency from 1 µA to 750 mA load - eliminates efficiency cliffs across operating modes. |
Use Scenario: GPS-enabled logistics tracker reporting location every 4 hours using primary alkaline battery pack. IC Role / Device Role / Timing Role: High-efficiency voltage translator enabling 1.8 V GPS module and 3.3 V cellular modem from shared 2S alkaline source. Use Value: 1.8 V–6.5 V input range accommodates full battery discharge curve (3.2 V → 1.8 V per cell); MODE pin toggles PWM for burst transmission. |
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; 1.8–3.3 V output range (100-mV steps); includes output discharge and STOP pin. | Targeted at space-constrained wearables where 0.97 mm × 1.47 mm WCSP not feasible; lacks VSET flexibility below 1.8 V. | Select when fixed 1.8–3.3 V outputs suffice and board area is premium - same IQ and DCS-Control benefits. |
| TPS62842DGR | HVSSOP-8 package; 1.8–3.6 V output (100-mV steps); no STOP pin; includes MODE pin. | Optimized for industrial control where noise immunity is less critical than cost; supports higher output voltages for I/O peripherals. | Choose for 1.8–3.6 V systems requiring forced PWM but not STOP functionality - identical thermal and pinout compatibility. |
Compared with TPS62841DGRR, TPS62840DLC offers smaller footprint but narrower output range, while TPS62842DGR provides higher VOUT capability at the expense of measurement-grade quiet operation - TPS62841DGRR uniquely balances sub-1.55 V programmability, STOP functionality, and HVSSOP thermal performance.
Availability
TPS62841DGRR is available at Aetrix Electronics and suitable for medical sensor patches, industrial IoT edge nodes, and asset tracking devices requiring stable component supply across multi-year production cycles and extended battery life requirements.
Supply support for TPS62841DGRR 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 decades of expertise in power management IC design and manufacturing.
The TPS6284x product line was engineered specifically for ultra-low-power battery-powered applications demanding nanoscale quiescent current, RF-clean operation, and flexible output voltage configuration - targeting medical, industrial, and metering markets.
FAQ
What is the minimum input voltage required for TPS62841DGRR to regulate at 1.55 V output?
The TPS62841DGRR requires a minimum input voltage of 1.72 V (UVLO rising threshold) to initiate regulation. For sustained 1.55 V output under load, VIN must remain ≥1.55 V + dropout - typically 1.6 V due to 100% duty-cycle capability. At light loads, regulation holds down to VIN ≈ VOUT with 120 nA IQ, making it suitable for Li-SOCl₂ cells discharging to 1.6 V.
How does the VSET resistor selection affect accuracy and stability of TPS62841DGRR?
The TPS62841DGRR uses an internal R2D converter to read the VSET resistor during startup only; accuracy depends on E96-series tolerance (±1%) and temperature coefficient (±200 ppm/°C). Parasitic capacitance >100 pF at VSET degrades resolution - PCB layout must avoid vias or traces near this pin. Once set, output voltage remains stable independent of RSET drift.
Can TPS62841DGRR operate without the STOP pin connected?
Yes - the STOP pin has an internal pulldown resistor (200–450 kΩ) and may be left unconnected or tied to GND for normal switching operation. Leaving it floating is not recommended due to potential noise coupling; tie to GND if unused. Asserting STOP = high is optional and only required during precision analog measurement windows.
What thermal performance can be expected from TPS62841DGRR in HVSSOP-8 package at 500 mA load?
In standard JEDEC PCB layout (2s2p copper), TPS62841DGRR exhibits RθJA = 54.4°C/W. At 500 mA output with 3.6 V input and 1.2 V output (75% efficiency), power dissipation is ~167 mW, resulting in ~9°C junction-to-ambient rise above ambient. With proper thermal pad soldering to 1-in² GND plane, junction temperature stays well below 125°C derating limit.
Does TPS62841DGRR support forced PWM mode, and how is it configured?
Yes - TPS62841DGRR supports forced PWM mode via the MODE pin. Pulling MODE high (≥1.1 V) disables automatic PFM/PWM transition and locks the converter in constant-frequency PWM operation, reducing output voltage ripple at light loads. The pin must be actively terminated; floating MODE is undefined and may cause erratic behavior.
TPS62841DGRR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 1.55V
- 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:
- 8-HVSSOP
TPS62841DGRR FAQ
1.How can I place an order for TPS62841DGRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62841DGRR 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 TPS62841DGRR reliable?
The price and inventory of TPS62841DGRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62841DGRR is usually 5 days.
3.What payment methods are accepted for TPS62841DGRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62841DGRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62841DGRR?
TPS62841DGRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62841DGRR 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 TPS62841DGRR?
For technical support, including TPS62841DGRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62841DGRR requirements.
6.How does Aetrix verify that TPS62841DGRR is sourced from the original manufacturer or authorized distributors?
All TPS62841DGRR 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 TPS62841DGRR meets industry standards.
7.What is the process for return or replacement of TPS62841DGRR?
All TPS62841DGRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62841DGRR, 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 TPS62841DGRR part is unused and in its original packaging.
Return procedure for TPS62841DGRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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