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Texas Instruments TPS62080ADSGT
- Part No.:
- TPS62080ADSGT
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS62080ADSGT.pdf
- Description:
- IC REG BUCK ADJ 1.2A 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:861
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Product details
Overview
TPS62080ADSGT from Texas Instruments is a 1.2-A synchronous step-down DC/DC converter with DCS-Control™ architecture, operating from 2.3 V to 6 V input and supporting adjustable output voltage (0.5 V to 4 V) via external feedback divider. It delivers ultra-low 6.5-µA quiescent current in Snooze Mode and integrates power-good monitoring, 100% duty-cycle operation, and short-circuit protection - ideal for battery-powered portable devices requiring extended runtime and tight regulation.
For engineers reviewing the TPS62080ADSGT datasheet, TPS62080ADSGT pinout, TPS62080ADSGT application, or TPS62080ADSGT equivalent, key selection considerations include its 2-mm × 2-mm WSON-8 package with thermal pad, Snooze Mode enable logic on MODE pin, VOS-sensed output regulation, and compatibility with low-ESR ceramic capacitors ≥10 µF and 1-µH inductors.
Technical Context
The TPS62080ADSGT implements DCS-Control™ topology, enabling seamless transition between PWM mode (2 MHz nominal switching frequency) at medium-to-heavy loads and Power Save Mode (PFM) at light loads - maintaining high efficiency across 0–1.2 A output current. Its internal loop compensation supports >100 µF output capacitance, ensuring stability with diverse ceramic capacitor selections.
Snooze Mode is activated by asserting MODE = HIGH, engaging a dedicated low-power regulation block that monitors output voltage with ±3.5% threshold deviation before waking full control circuitry - reducing quiescent current to 6.5 µA while preserving regulation accuracy (±5% in Snooze Mode). The device also features integrated 40-Ω output discharge resistor (TPS62080A variant), 100% duty-cycle low-dropout operation, and open-drain PG output with 90%–95% VOUT hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3 V to 6 V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/NiMH batteries without pre-regulation. |
| Output Current | 1.2 A continuous - sufficient for powering microcontrollers, sensors, and RF subsystems in compact portable designs. |
| Quiescent Current (Snooze) | 6.5 µA - extends battery life in standby or ultra-light-load conditions (e.g., real-time clock backup, sensor sleep modes). |
| Feedback Reference Voltage | 0.45 V ±1.3% - enables precise output programming down to 0.5 V using standard resistor dividers (R2 ≤ 40 kΩ recommended). |
| High-Side RDS(on) | 95 mΩ typical - minimizes conduction loss at full load, improving thermal performance in 2-mm × 2-mm WSON package. |
| Power-Good Threshold | 90% of nominal VOUT - provides reliable rail sequencing signal with 5% hysteresis; requires external pull-up resistor. |
| Output Discharge Resistor | 40 Ω (TPS62080A) - actively discharges output during shutdown, preventing residual voltage from interfering with downstream logic. |
| Switching Frequency | 2 MHz nominal (PWM mode) - allows use of small 1-µH inductors and reduces EMI filtering requirements. |
Pinout & Package
TPS62080ADSGT is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad soldered to PCB ground for enhanced thermal dissipation (RθJA = 59.7°C/W). The package supports reflow-compatible assembly and meets JEDEC J-STD-020 moisture sensitivity level 2a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic control; must be pulled to VIN or GND - floating state causes undefined operation. |
| GND | Power and signal ground | Primary return path for power stage and control circuitry; connects directly to thermal pad. |
| MODE | Snooze Mode enable | Logic HIGH activates ultra-low-IQ regulation; critical for optimizing battery runtime below 2 mA load. |
| FB | Feedback input | Connects to resistor divider midpoint; regulates output by maintaining 0.45 V at this node. |
| VOS | Output voltage sense | Direct connection to regulated output; improves load regulation accuracy by sensing at point-of-load. |
| PG | Power-good open-drain output | Signals valid regulation (high-Z when VOUT ≥95%; pulled low when VOUT ≤90%); requires external pull-up. |
| SW | Switch node | Connects to inductor and high/low-side MOSFETs; carries high di/dt - requires tight layout and ground stitching. |
| VIN | Input supply | Accepts 2.3–6 V; bypassed with 10 µF ceramic capacitor close to pin to suppress ripple and EMI. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ Architecture | Enables single-loop seamless transition between PWM and PFM modes - eliminates output voltage glitch during mode change and ensures <1% load transient deviation. |
| Snooze Mode (6.5 µA IQ) | Extends battery life in always-on applications (e.g., wearable health monitors) by reducing standby current by >80% vs. standard PFM mode. |
| 100% Duty-Cycle Operation | Maintains regulation down to VIN = VOUT + IOUT×RDS(on) - fully utilizes battery voltage range (e.g., discharges Li-ion from 4.2 V to 2.8 V while sustaining 1.2 V output). |
| Integrated Output Discharge (40 Ω) | Prevents floating output after shutdown - avoids unintended biasing of downstream ICs and simplifies power sequencing in multi-rail systems. |
| Thermal Shutdown (150°C) | Protects against sustained overload or poor heatsinking; auto-recovery with 20°C hysteresis prevents thermal cycling instability. |
| Power-Good Monitoring | Provides system-level fault detection and rail sequencing capability - PG can drive EN of downstream converters without additional logic. |
Applications
| Battery-Powered Portable Devices | Point-of-Load Regulation |
|---|---|
|
Use Scenario: Wearable fitness tracker with BLE radio, accelerometer, and OLED display operating from single-cell Li-ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary system power regulator delivering stable 1.2 V to MCU core and 1.8 V to sensor interface (via resistive divider), dynamically adjusting to varying load profiles. Use Value: Snooze Mode cuts quiescent current to 6.5 µA during motionless periods, extending battery life from 5 to 12 days between charges. |
Use Scenario: Industrial IoT edge node with ARM Cortex-M4 MCU, RS-485 transceiver, and environmental sensors powered from 3.3 V system rail. IC Role / Device Role / Timing Role: Local 1.2-V rail generator placed adjacent to MCU VDDCORE pins to minimize IR drop and noise coupling. Use Value: VOS-sense connection and DCS-Control ensure <15-mV load transient deviation during CPU burst activity, preventing brownouts. |
| Low-Power Sensor Nodes | Medical Diagnostic Handhelds |
|
Use Scenario: Wireless soil moisture sensor node using LoRaWAN, sleeping >99% of time with periodic 10-ms wake-up for measurement and transmission. IC Role / Device Role / Timing Role: Always-on 3.3-V supply derived from primary 3.6-V lithium thionyl chloride cell, regulating auxiliary 1.8-V rail for ADC and RF front-end. Use Value: 40-Ω output discharge clears residual charge from decoupling caps within 100 µs after shutdown - eliminating false wake-ups from leakage. |
Use Scenario: Portable ECG monitor with analog front-end, 12-bit SAR ADC, and LCD display, required to operate >8 hours on AA alkaline cells. IC Role / Device Role / Timing Role: Dual-output power management: main 2.8-V rail for analog circuitry and 1.2-V rail for digital logic, both derived from 2.3–6 V input range. Use Value: 100% duty-cycle operation sustains regulation until battery drops to 2.5 V - extracting ~12% more usable energy vs. conventional buck converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62081DSGT | Fixed 1.8-V output; 1-kΩ output discharge resistor; no FB pin required. | Eliminates external resistor divider but lacks output voltage flexibility - suitable only where 1.8 V is mandatory. | Select TPS62081DSGT when board space is constrained and fixed 1.8-V rail suffices; avoid if programmable VOUT needed. |
| TPS62840DLCR | Lower 0.3-µA quiescent current (IQ), 2.4-V to 5.5-V input, same 2-mm × 2-mm WSON-8 package. | Superior ultra-low-IQ performance but lacks Snooze Mode control pin and has reduced max output current (0.8 A). | Choose TPS62840DLCR for sub-1-mA always-on rails (e.g., RTC backup); retain TPS62080ADSGT for 1.2-A loads with active MODE control. |
Compared with TPS62081DSGT and TPS62840DLCR, the TPS62080ADSGT uniquely balances 1.2-A capability, programmable output, Snooze Mode configurability, and 40-Ω discharge - making it optimal for mid-power portable systems requiring both flexibility and battery longevity.
Availability
TPS62080ADSGT is available at Aetrix Electronics and suitable for battery-powered portable devices, point-of-load regulators, and low-power sensor nodes requiring stable component supply, consistent parametric performance, and long-term production support.
Supply support for TPS62080ADSGT 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 high-reliability, energy-efficient IC design.
The TPS6208x family was developed specifically for high-efficiency, low-noise DC/DC conversion in space-constrained battery-operated equipment - emphasizing ultra-low quiescent current, fast transient response, and seamless light-load mode transitions.
FAQ
What is the function of the MODE pin on the TPS62080ADSGT?
The MODE pin on the TPS62080ADSGT enables Snooze Mode when driven HIGH, reducing quiescent current to 6.5 µA for ultra-low-power operation below 2 mA load. When MODE is LOW, the device operates in standard Power Save Mode. This pin must not be left floating and is typically controlled by a microcontroller GPIO to dynamically optimize battery runtime based on system activity.
How does the TPS62080ADSGT achieve 100% duty-cycle operation?
The TPS62080ADSGT achieves 100% duty-cycle operation by holding the high-side MOSFET continuously ON and disabling the low-side switch when input voltage approaches output voltage. This minimizes dropout and extends usable battery range - for example, sustaining 1.2 V output down to VIN ≈ 1.25 V (accounting for RDS(on) and inductor resistance), which is critical for single-cell Li-ion applications.
What is the purpose of the VOS pin on the TPS62080ADSGT?
The VOS pin on the TPS62080ADSGT provides remote output voltage sensing, connecting directly to the load-side of the output capacitor to compensate for PCB trace resistance. This improves load regulation accuracy - especially under dynamic current steps - by closing the feedback loop at the point-of-load rather than at the converter's output pin, reducing voltage error to <±5 mV across 0–1.2 A.
Does the TPS62080ADSGT require an external resistor divider for output voltage setting?
Yes, the TPS62080ADSGT is the adjustable-output variant of the TPS6208x family and requires an external resistor divider connected between VOUT, FB, and GND to set the output voltage. The FB pin regulates to 0.45 V, so R1 and R2 values are calculated using VOUT = 0.45 × (1 + R1/R2). For best noise immunity and accuracy, R2 should be ≤40 kΩ and placed close to the FB pin.
What is the difference between TPS62080ADSGT and TPS62080DSGT?
The TPS62080ADSGT (A-suffix) features a 40-Ω integrated output discharge resistor and Snooze Mode functionality enabled via the MODE pin, whereas the TPS62080DSGT (no A-suffix) uses a 1-kΩ discharge resistor and lacks Snooze Mode control. Both share identical pinout, package, input range, and output current rating, but only the A-version supports ultra-low 6.5-µA quiescent current and faster output discharge.
TPS62080ADSGT 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 4V
- 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)
TPS62080ADSGT FAQ
1.How can I place an order for TPS62080ADSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62080ADSGT 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 TPS62080ADSGT reliable?
The price and inventory of TPS62080ADSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62080ADSGT is usually 5 days.
3.What payment methods are accepted for TPS62080ADSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62080ADSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62080ADSGT?
TPS62080ADSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62080ADSGT 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 TPS62080ADSGT?
For technical support, including TPS62080ADSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62080ADSGT requirements.
6.How does Aetrix verify that TPS62080ADSGT is sourced from the original manufacturer or authorized distributors?
All TPS62080ADSGT 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 TPS62080ADSGT meets industry standards.
7.What is the process for return or replacement of TPS62080ADSGT?
All TPS62080ADSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62080ADSGT, 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 TPS62080ADSGT part is unused and in its original packaging.
Return procedure for TPS62080ADSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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