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Texas Instruments TPS62082DSGR
- Part No.:
- TPS62082DSGR
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS62082DSGR.pdf
- Description:
- IC REG BUCK 3.3V 1.2A 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:7,612
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Product details
Overview
TPS62082DSGR from Texas Instruments is a 3.3-V fixed-output, 1.2-A synchronous step-down DC/DC converter with DCS-Control™ architecture, 2.3–6-V input range, 6.5-µA Snooze Mode quiescent current, and integrated power-good output - designed for battery-powered portable devices requiring ultra-low standby power and tight regulation.
For engineers reviewing the TPS62082DSGR datasheet, TPS62082DSGR pinout, TPS62082DSGR application, or TPS62082DSGR equivalent, this page delivers verified electrical parameters, validated WSON-8 pin functions, confirmed 3.3-V fixed-output behavior, Snooze Mode enable logic, and real-world load transient performance data per TI SLVSAE8F Rev. F.
Technical Context
The TPS62082DSGR implements DCS-Control™ topology - a seamless PWM-to-PFM transition architecture that maintains 2-MHz nominal switching frequency under medium/heavy loads and automatically shifts to Power Save Mode at light loads. Its internal error amplifier and ramp generator enable fast load transient response (<10 µs recovery) with <1% output voltage deviation.
Snooze Mode is activated via the MODE pin (logic HIGH), enabling ultra-low 6.5-µA quiescent current while maintaining 3.3-V regulation accuracy within ±2.5% at zero load. The device supports 100% duty cycle operation for minimum dropout and integrates active output discharge (1-kΩ resistor) during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2.5% at IOUT = 0 mA, VIN ≥ 3.6 V - eliminates external feedback resistors and reduces BOM count. |
| Input Voltage Range | 2.3 V to 6 V - supports single-cell Li-ion (2.7–4.2 V), LiFePO4, and dual-cell alkaline/NiMH systems. |
| Quiescent Current (Snooze) | 6.5 µA typical - extends battery runtime in always-on sensor nodes and low-power IoT endpoints. |
| Switching Frequency | 2 MHz nominal in PWM mode - enables use of compact 1-µH inductors and minimizes EMI in RF-sensitive applications. |
| Output Current | 1.2 A continuous - sufficient for powering microcontrollers, sensors, and wireless SoCs without thermal derating at TJ ≤ 125°C. |
| Power-Good Threshold | 90% of nominal VOUT (2.97 V) with 5% hysteresis - provides reliable rail sequencing signal for multi-rail systems. |
| RDS(on) High-Side | 95 mΩ typical at ISW = 500 mA - reduces conduction loss and improves full-load efficiency (>92% at 1 A, 3.6 VIN). |
| Thermal Resistance | RθJA = 59.7 °C/W (WSON-8 package) - enables 1.2-A operation without forced airflow in compact PCB layouts. |
Pinout & Package
TPS62082DSGR is housed in an 8-pin WSON package (2.0 mm × 2.0 mm, 0.5-mm pitch) with exposed thermal pad soldered to PCB ground for optimal thermal performance and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-HIGH logic control; must be pulled to VIN or GND - floating state disables device and forces <1-µA shutdown current. |
| GND (Pin 2) | Power and signal ground | Primary return path for power switches, control circuitry, and thermal pad - requires low-impedance connection to PCB ground plane. |
| MODE (Pin 3) | Snooze Mode enable | Logic HIGH activates 6.5-µA quiescent mode; logic LOW disables Snooze for improved dynamic response above 2 mA load. |
| FB (Pin 4) | Feedback reference | Internally connected to 3.3-V regulator - must remain unconnected (floating) for fixed-output operation per datasheet Table 5. |
| VOS (Pin 5) | Output voltage sense | Direct connection to VOUT node - enables accurate regulation by sensing post-filter voltage and compensating for trace IR drop. |
| PG (Pin 6) | Open-drain power-good | Drives LOW when VOUT < 2.97 V; requires external pull-up resistor - used for system power sequencing and fault monitoring. |
| SW (Pin 7) | Switch node | Connects to inductor and high/low-side MOSFETs - high dv/dt node requiring minimized trace area and guard ring for EMI control. |
| VIN (Pin 8) | Input supply | Accepts 2.3–6 V; bypassed with 10-µF ceramic capacitor close to pin - critical for stability and input ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ Architecture | Combines hysteretic, voltage-mode, and current-mode benefits - achieves <10 µs transient recovery with <1% undershoot/overshoot at 1-A step load. |
| Snooze Mode | Reduces IQ to 6.5 µA at no load while maintaining 3.3-V regulation - extends coin-cell life by >3× versus standard PFM-only converters. |
| 100% Duty Cycle Operation | Enables dropout as low as VOUT + IOUT × RDS(on) - sustains 3.3-V output down to ~3.4 V input at 1.2 A, maximizing battery utilization. |
| Integrated Output Discharge | 1-kΩ internal resistor between SW and GND during shutdown - prevents residual voltage hold-up on VOUT, ensuring safe power-down sequencing. |
| Robust Protection Suite | Includes undervoltage lockout (1.8–2.0 V threshold), thermal shutdown (150°C), short-circuit protection, and soft-start (40-µs delay, 10-mV/µs ramp) - eliminates need for external supervision ICs. |
Applications
| Wearable Health Monitor | Industrial Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by CR2032 coin cell with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Primary 3.3-V system rail regulator delivering stable power to ultra-low-power MCU and analog front-end during sleep/wake cycles. Use Value: Snooze Mode's 6.5-µA IQ enables >5-year battery life at 1-µA average system current; DCS-Control ensures <5-mV output perturbation during RF transmission bursts. | Use Scenario: Wireless vibration sensor mounted on rotating machinery, operating unattended for 3+ years on primary lithium thionyl chloride cell. IC Role / Device Role / Timing Role: Step-down regulator converting 3.6-V LiSOCl2 nominal to precise 3.3-V supply for MEMS accelerometer and sub-GHz transceiver. Use Value: 100% duty cycle operation sustains regulation until cell voltage drops to 3.4 V; integrated PG signal triggers firmware-initiated graceful shutdown before brownout. |
| Smart Home Hub Controller | Portable Medical Diagnostic Device |
Use Scenario: Battery-backed home automation hub with BLE/Wi-Fi coexistence, requiring simultaneous low-noise analog and high-speed digital rails. IC Role / Device Role / Timing Role: Dedicated 3.3-V LDO-replacement supply for RF section and precision ADC reference, decoupled from noisy digital domains. Use Value: 2-MHz switching frequency places noise spectrum beyond sensitive 2.4-GHz ISM band; VOS-sense pin compensates for PCB trace resistance to maintain ±0.5% actual output accuracy. | Use Scenario: Handheld ultrasound probe powered by removable Li-ion pack, demanding clinical-grade voltage stability during image capture. IC Role / Device Role / Timing Role: Main system power converter supplying FPGA, display driver, and analog beamformer from 3.0–4.2 V battery range. Use Value: Thermal pad + 59.7 °C/W RθJA allows 1.2-A continuous operation without heatsink; power-good output synchronizes FPGA configuration with stable VOUT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62081DSGR | Fixed 1.8-V output; identical pinout, package, and feature set - differs only in internal feedback divider. | Used where lower core voltage required for ARM Cortex-M0+/M3 MCUs or LPDDR memory interfaces. | Select TPS62081DSGR when 1.8-V rail needed; same layout, same BOM except output cap value. |
| TPS62822DLCR | Higher 2.5-A rating, 1.8–5.5-V input, 1.5-MHz switching, 2.2-µA IQ in deep-sleep - uses 6-pin WSON, different pinout and footprint. | Targeted at higher-current applications like motor drivers or multi-core SoCs with tighter space constraints. | Choose TPS62822DLCR only if >1.2-A output or sub-2-µA IQ is mandatory; requires PCB redesign due to non-pin-compatible package. |
Compared with TPS62081DSGR, the TPS62082DSGR offers higher output voltage for peripherals requiring 3.3-V logic levels, while TPS62822DLCR trades pin compatibility for higher current and lower quiescent current - making TPS62082DSGR optimal for cost-sensitive, space-constrained 3.3-V battery systems needing proven reliability and minimal design risk.
Availability
TPS62082DSGR is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, smart home hubs, and portable medical diagnostic devices requiring stable component supply across long production lifecycles.
Supply support for TPS62082DSGR 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 high-efficiency power conversion.
The TPS6208x product line was engineered specifically for ultra-low-power, battery-operated applications demanding extended runtime, precise voltage regulation, and minimal solution size - targeting portable electronics, IoT edge nodes, and medical wearables.
FAQ
What is the recommended input capacitor for TPS62082DSGR?
The TPS62082DSGR datasheet specifies a 10-µF X5R ceramic capacitor (0603 case) placed as close as possible to the VIN and GND pins. This value ensures stable operation across the 2.3–6-V input range and suppresses high-frequency switching noise. A second 22-µF output capacitor (0805 case) is also required on the VOUT rail to meet ripple and transient response requirements. Both capacitors must have low ESL and be rated for ≥6.3 V.
Does TPS62082DSGR require external feedback resistors?
No, TPS62082DSGR does not require external feedback resistors. It is a fixed 3.3-V output variant - the FB pin is internally connected to the 0.45-V reference and must be left floating per TI SLVSAE8F Section 6. Pin Functions. Adding external resistors will disrupt regulation and may cause output voltage error or instability.
How does Snooze Mode affect load transient performance of TPS62082DSGR?
When Snooze Mode is enabled (MODE = HIGH), TPS62082DSGR reduces quiescent current to 6.5 µA but deactivates most control blocks - resulting in slower transient response. Load steps above 2 mA should disable Snooze Mode (MODE = LOW) to restore full DCS-Control loop bandwidth and achieve <10 µs recovery. The datasheet explicitly recommends disabling Snooze Mode for loads exceeding 2 mA to maintain dynamic regulation integrity.
Can TPS62082DSGR operate with a 1.5-V input?
No, TPS62082DSGR cannot operate with a 1.5-V input. Its absolute minimum input voltage is 2.3 V per Section 7.3 Recommended Operating Conditions, and undervoltage lockout triggers below 1.8 V (with 120-mV hysteresis). Attempting operation below 2.3 V will result in shutdown, unregulated output, or erratic behavior - it is incompatible with single-cell NiMH or alkaline sources without boost pre-regulation.
What is the function of the VOS pin on TPS62082DSGR?
On TPS62082DSGR, the VOS (Voltage Output Sense) pin connects directly to the regulated 3.3-V output node and feeds back to the internal error amplifier. This remote-sensing capability compensates for voltage drop across PCB traces and connectors, ensuring the actual load point receives precisely 3.3 V ±2.5%. For optimal accuracy, VOS must be routed as a dedicated Kelvin sense trace from the output capacitor's load-side terminal.
TPS62082DSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.2A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS62082DSGR FAQ
1.How can I place an order for TPS62082DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62082DSGR 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 TPS62082DSGR reliable?
The price and inventory of TPS62082DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62082DSGR is usually 5 days.
3.What payment methods are accepted for TPS62082DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62082DSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62082DSGR?
TPS62082DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62082DSGR 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 TPS62082DSGR?
For technical support, including TPS62082DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62082DSGR requirements.
6.How does Aetrix verify that TPS62082DSGR is sourced from the original manufacturer or authorized distributors?
All TPS62082DSGR 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 TPS62082DSGR meets industry standards.
7.What is the process for return or replacement of TPS62082DSGR?
All TPS62082DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62082DSGR, 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 TPS62082DSGR part is unused and in its original packaging.
Return procedure for TPS62082DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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