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Texas Instruments TPS62841DLCR
- Part No.:
- TPS62841DLCR
- Manufacturer:
- Texas Instruments
- Package:
- 8-VFDFN
- Datasheet:
-
TPS62841DLCR.pdf
- Description:
- IC REG BUCK ADJ 750MA 8VSON
- Quantity:
- Payment:
- Shipping:
Inventory:10,190
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Product details
Overview
TPS62841DLCR 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, 0.8 V to 1.55 V output voltage range (in 50-mV steps), and SON-8 (DLC) package. It delivers high efficiency down to 1 µA load and supports noise-sensitive applications via STOP pin–enabled switching halt.
For engineers reviewing the TPS62841DLCR datasheet, TPS62841DLCR pinout, TPS62841DLCR application, or TPS62841DLCR equivalent, key selection criteria include its 60-nA IQ in active operation, 120-nA IQ in 100% duty-cycle mode, DCS-Control™ topology for RF-friendly regulation, VSET-based 16-step output voltage programming, and integrated output discharge function.
Technical Context
The TPS62841DLCR employs TI's DCS-Control™ topology-combining hysteretic and voltage-mode control-to achieve seamless PFM/PWM transition, <1% output voltage ripple, and fast transient response. Its internal R2D (resistor-to-digital) converter reads an external resistor on VSET to select one of 16 precise output voltages within 0.8 V–1.55 V.
It integrates dual MOSFET power switches (430 mΩ high-side / 170 mΩ low-side at 3.6 V, DLC package), programmable MODE pin for forced-PWM or auto PFM/PWM operation, and dedicated STOP pin that halts switching instantly for noise-free analog measurements. Thermal shutdown activates at 160°C with 5°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 6.5 V - supports 2S–4S alkaline, 1S–2S Li-MnO₂, or 1S Li-ion/Li-SOCl₂ batteries. |
| Output Current | 750 mA - sufficient for microcontrollers, BLE radios, and sensor front-ends in compact IoT nodes. |
| Quiescent Current (IQ) | 60 nA typical - enables multi-year battery life in always-on wake-up circuits and smart sensors. |
| Output Voltage Range | 0.8 V to 1.55 V in 50-mV steps - matches core voltages of ultra-low-power MCUs (e.g., MSP430, nRF52840) and analog sensors. |
| Switching Frequency | 1.8 MHz nominal - allows use of small 2.2 µH inductors and 10 µF ceramic output capacitors. |
| Shutdown Current | 25 nA - ensures minimal leakage during deep sleep or system standby states. |
| Efficiency at 1 µA | 80% @ 3.6 VIN → 1.8 VOUT - maintains usable regulation even under nanoampere loads typical in energy-harvesting systems. |
Pinout & Package
TPS62841DLCR is housed in an 8-pin SON (Small Outline No-lead) package, 1.5 mm × 2.0 mm, with exposed thermal pad (EP) connected to GND for enhanced thermal performance. The package supports reflow soldering and offers low thermal resistance (RθJA = 105.6°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 1.8–6.5 V; requires 4.7 µF ceramic capacitor placed adjacent to minimize noise and voltage spikes. |
| GND | Ground reference | Common return for input/output capacitors and thermal pad; must be low-impedance connection to EP. |
| SW | Switch node | Connects to inductor; carries high-frequency switching current; layout critical for EMI control. |
| VOS | Output voltage sense & discharge | Directly connects to output capacitor; internally discharges VOUT when EN = GND to prevent floating rail. |
| VSET | Voltage selection input | Resistor-to-GND sets output voltage via internal R2D converter; max parasitic capacitance ≤100 pF. |
| EN | Enable control | Active-high logic; includes internal 450-kΩ pulldown to prevent floating start-up; disconnects after regulation. |
| STOP | Noise suppression control | Logic-high halts switching immediately for quiet supply during precision ADC sampling or RF transmit windows. |
| MODE | Operating mode select | GND = auto PFM/PWM; VIN = forced PWM; enables dynamic trade-off between ripple and light-load efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 60 nA typical active current extends battery life in maintenance-free IoT deployments lasting >10 years. |
| 100% duty-cycle mode | 120-nA IQ at VIN = VOUT sustains regulation near end-of-battery discharge without dropout. |
| DCS-Control™ topology | Enables <1% output ripple and sub-10-µs transient recovery-critical for powering RF transceivers and precision analog circuits. |
| Integrated output discharge | Internal MOSFET sinks up to 44 mA through VOS pin to safely discharge VOUT during shutdown-eliminates need for external bleed resistors. |
| VSET-programmable outputs | 16 factory-calibrated output voltages selected by single E96-series resistor-reduces BOM count and simplifies firmware configuration. |
Applications
| Wearable Health Monitors | Smart Utility Meters |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with intermittent Bluetooth LE transmission in patch-style medical devices. IC Role / Device Role / Timing Role: Primary power regulator supplying 1.2 V to ultra-low-power MCU and analog front-end, synchronized to STOP pin during ADC acquisition. Use Value: 60-nA IQ enables >5-year coin-cell operation; STOP pin eliminates switching noise during 16-bit ADC sampling, improving SNR by >15 dB. |
Use Scenario: Battery-backed AMI (Advanced Metering Infrastructure) modules performing hourly RF mesh reporting and daily firmware updates. IC Role / Device Role / Timing Role: Main system regulator delivering 1.5 V to NB-IoT modem and metrology ASIC, entering 100% mode during data burst transmission. Use Value: 120-nA 100% mode IQ preserves battery capacity during long idle periods; DCS-Control ensures stable VOUT during 750-mA modem peak currents. |
| Industrial Wireless Sensors | Asset Tracking Beacons |
Use Scenario: Temperature/humidity/pressure nodes deployed in hazardous locations (ATEX Zone 0/1) with intrinsic safety barriers. IC Role / Device Role / Timing Role: Isolated power stage supplying 0.9 V to low-voltage sensor interface and 1.5 V to LoRa transceiver, controlled via MODE pin for burst-mode efficiency. Use Value: 25-nA shutdown current meets IEC 60079-11 intrinsic safety leakage limits; SON-8 package enables compact, conformal-coated PCB designs. |
Use Scenario: GPS-enabled logistics tags transmitting location every 6 hours using CR2032 primary cell. IC Role / Device Role / Timing Role: System regulator providing 1.1 V to GPS SoC and 1.35 V to cellular modem, leveraging VSET resistor for precise voltage matching. Use Value: 50-mV output granularity matches optimal core voltages of u-blox SARA-R5 and Quectel BG96 modems; 80% efficiency at 1 µA extends tag lifetime to 7+ years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DLCR | Output range: 1.8 V–3.3 V (100-mV steps); same IQ, package, and feature set. | Designed for higher-voltage MCU cores and industrial sensors requiring ≥1.8 V rails. | Select when target output voltage exceeds 1.55 V; identical layout and control interface. |
| TPS62841YBGR | WCSP-6 package (0.97 mm × 1.47 mm); same electrical specs but no STOP or MODE pins. | Targeted at space-constrained wearables where footprint reduction outweighs need for noise control or mode flexibility. | Choose only if board area is critical and STOP/MODE functionality is unused; requires different PCB layout and routing. |
Compared with TPS62841DLCR, TPS62840DLCR provides higher output voltage flexibility but cannot support sub-1.8 V cores, while TPS62841YBGR saves 60% board area but forfeits STOP-triggered noise suppression and dynamic mode selection-making TPS62841DLCR optimal for precision, low-voltage, noise-sensitive IoT endpoints.
Availability
TPS62841DLCR is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial wireless sensors, and asset tracking beacons requiring stable component supply across multi-year production cycles.
Supply support for TPS62841DLCR 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 high-volume manufacturing reliability.
The TPS6284x product line was engineered specifically for battery-powered IoT edge nodes demanding nanowatt-level quiescent power, precise low-voltage regulation, and RF-clean operation-addressing design constraints in medical patches, smart meters, and industrial sensors.
FAQ
What is the minimum output voltage supported by the TPS62841DLCR?
The TPS62841DLCR supports a minimum output voltage of 0.8 V, selectable in precise 50-mV increments up to 1.55 V via an external resistor on the VSET pin. This range aligns with the core supply requirements of modern ultra-low-power microcontrollers such as the TI MSP430FR2355 and Nordic nRF52833, ensuring optimal efficiency and regulation stability at sub-1-V operation. The device uses an internal R2D converter to decode the resistor value during startup.
How does the STOP pin function in the TPS62841DLCR?
The STOP pin on the TPS62841DLCR halts all switching activity immediately when driven high, allowing the output capacitor to sustain the load without noise-critical for high-resolution ADC sampling or RF receiver sensitivity testing. When STOP returns low, the device resumes normal DCS-Control regulation within microseconds. An internal pulldown resistor ensures safe default behavior, and the pin is fully compatible with standard GPIO logic levels (VIH ≥ 1.1 V, VIL ≤ 0.4 V).
Can the TPS62841DLCR operate with input voltage equal to output voltage?
Yes, the TPS62841DLCR supports 100% duty-cycle operation, enabling regulation when VIN equals VOUT-such as 1.5 V input to 1.5 V output. In this mode, quiescent current remains ultra-low at 120 nA typical, preserving battery capacity during final discharge stages. The device automatically enters this mode when VIN drops within ~100 mV of the programmed VOUT, maintaining regulated output without dropout or reset.
What is the purpose of the VOS pin on the TPS62841DLCR?
The VOS pin on the TPS62841DLCR serves two critical functions: it provides feedback to the internal regulation loop for precise DC output voltage accuracy (±2% for VOUT ≤ 1.55 V), and it enables automatic output discharge when EN is pulled low-sinking up to 44 mA through an internal MOSFET to safely deplete VOUT. Direct connection to the output capacitor with minimal trace length is required to maintain stability and discharge speed.
Is the TPS62841DLCR pin-compatible with other devices in the TPS6284x family?
Yes, the TPS62841DLCR shares identical pinout, package dimensions, and footprint with TPS62840DLCR and TPS62849DLCR in the SON-8 (DLC) variant-enabling drop-in replacement for different output voltage requirements. All three support the same VIN range, 750-mA output, STOP/MODE/EN/VSET/VOS/SW/GND/EP pin assignments, and thermal pad layout. No PCB redesign is needed when migrating between these variants.
TPS62841DLCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VFDFN
- 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):
- 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-VSON-HR (2x1.5)
TPS62841DLCR FAQ
1.How can I place an order for TPS62841DLCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62841DLCR 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 TPS62841DLCR reliable?
The price and inventory of TPS62841DLCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62841DLCR is usually 5 days.
3.What payment methods are accepted for TPS62841DLCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62841DLCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62841DLCR?
TPS62841DLCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62841DLCR 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 TPS62841DLCR?
For technical support, including TPS62841DLCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62841DLCR requirements.
6.How does Aetrix verify that TPS62841DLCR is sourced from the original manufacturer or authorized distributors?
All TPS62841DLCR 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 TPS62841DLCR meets industry standards.
7.What is the process for return or replacement of TPS62841DLCR?
All TPS62841DLCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62841DLCR, 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 TPS62841DLCR part is unused and in its original packaging.
Return procedure for TPS62841DLCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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