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Texas Instruments TPS62020DGQ
- Part No.:
- TPS62020DGQ
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62020DGQ.pdf
- Description:
- IC REG BUCK ADJ 600MA 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:103
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Product details
Overview
TPS62020DGQ from Texas Instruments is a synchronous step-down DC-DC converter optimized for battery-powered portable electronics. It delivers up to 600 mA output current with 1.25 MHz fixed switching frequency, 95% peak efficiency, and supports adjustable output voltages from 0.7 V to VIN across 2.5 V–6.0 V input range - enabling use in Li-Ion or 3-cell NiMH/NiCd powered PDAs, smart phones, and subnotebooks.
For engineers reviewing the TPS62020DGQ datasheet, TPS62020DGQ pinout, TPS62020DGQ application, or TPS62020DGQ equivalent, key selection considerations include its active-high MODE pin, PowerPAD™ MSOP-10 package thermal performance, dynamic voltage positioning for transient response, and compatibility with 10 µF ceramic input/output capacitors in space-constrained designs.
Technical Context
The TPS62020DGQ employs a fast-response voltage-mode control architecture with input voltage feed-forward, enabling tight line/load regulation and stable operation with small ceramic capacitors. Its dual-mode operation - fixed-frequency PWM at medium-to-heavy loads and pulse-frequency modulation (PFM) power-save mode at light loads - maintains high efficiency across the full 0–600 mA load range.
Internal circuitry includes a 0.5 V reference, integrated soft-start limiting inrush current, 100% duty-cycle low-dropout capability, and protection features including thermal shutdown (150°C), short-circuit detection, and undervoltage lockout (2.3 V typical). The P-channel and N-channel MOSFETs feature on-resistances of 115 mΩ and 85 mΩ respectively at 3.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 600 mA max - supports DSP, CPU, and core logic rails in portable systems without external current boosting. |
| Input voltage range | 2.5 V to 6.0 V - compatible with single-cell Li-Ion (2.7–4.2 V), 3-cell NiMH (3.6 V nominal), and 5 V USB/adapter inputs. |
| Switching frequency | 1.25 MHz fixed (PWM mode); 625 kHz (PFM mode) - enables compact 3.3–10 µH inductors and minimizes EMI in RF-sensitive applications. |
| Quiescent current | 18 µA typical - extends battery life in always-on or standby modes of handheld devices. |
| Feedback reference | 0.5 V ±3% - allows precise adjustable output via external resistor divider; supports 0.7 V minimum output for low-voltage processors. |
| Efficiency peak | 95% at 1.8 V/3.6 V - reduces thermal load and improves runtime in thermally constrained enclosures like smartphones and PC cards. |
| Thermal shutdown | 150°C junction - protects against sustained overload or poor PCB heatsinking while allowing recovery at ~150°C hysteresis. |
Pinout & Package
TPS62020DGQ uses the MSOP-10 PowerPad™ package (3.0 mm × 3.0 mm × 1.0 mm), where the exposed thermal pad must be soldered to a dedicated GND plane for optimal thermal performance (RθJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high digital control: tie to VIN to enable, GND to shut down (0.1 µA ISD); must not float. |
| VIN (Pins 2, 3) | Power input | Dual-input pins reduce trace resistance and improve high-current path integrity; accepts 2.5–6.0 V supply. |
| GND (Pin 4) | Analog ground | Reference for FB and internal bias circuits; separate from PGND to minimize noise coupling into feedback loop. |
| FB (Pin 5) | Feedback input | Connects to resistor divider (R1/R2) to set output voltage; internal 0.5 V reference enables 0.7 V–VIN outputs. |
| MODE (Pin 6) | Operating mode select | Active-high: high = forced PWM (fixed 1.25 MHz); low = automatic PWM/PFM transition for highest light-load efficiency. |
| SW (Pins 7, 8) | Switch node | Drain connection of internal P-channel and N-channel MOSFETs; requires minimal trace area to limit EMI and ringing. |
| PGND (Pins 9, 10) | Power ground | High-current return path for inductor and MOSFETs; must connect directly to PowerPad™ and input/output capacitor grounds. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic voltage positioning | Maintains output 0.8% above nominal at light load, reducing voltage droop during 0→600 mA transients - enables use of 10 µF ceramic output caps. |
| 100% duty-cycle operation | Extends usable battery range by regulating down to VOUT + IOUT×rDS(on); critical for maximizing runtime in single-cell Li-Ion systems. |
| Integrated soft-start | Digital ramp-up limits inrush current to ILIM/8 → ILIM/4 → ILIM/2 → 1.1 A; prevents input rail collapse during startup from weak sources. |
| Power-save mode (PFM) | Reduces switching frequency and quiescent current below ~10 mA load - achieves >85% efficiency at 1 mA while maintaining regulation. |
| Thermal and short-circuit protection | Shuts down P/N switches at 150°C junction or under hard short; resumes operation after cooldown - ensures robust field reliability. |
Applications
| PDA / Smart Phone Core Rail | USB-Powered Modem Power |
|---|---|
Use Scenario: Powering ARM-based application processors and DDR memory in handheld devices with single Li-Ion battery input (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator delivering 1.2 V/600 mA core voltage with dynamic voltage positioning for load transients. Use Value: Enables 10 µF ceramic output capacitance and eliminates need for larger tantalum caps - saving board area and cost in ultra-thin form factors. |
Use Scenario: Converting 5 V USB power to 3.3 V for Ethernet PHY and microcontroller in compact broadband modems. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating in forced PWM mode to suppress 1.25 MHz switching noise near sensitive analog receivers. Use Value: Achieves 92% efficiency at 3.3 V/500 mA while meeting USB inrush current limits via controlled soft-start. |
| Notebook Subsystem Supply | xDSL Line Card Bias |
Use Scenario: Generating 1.8 V for FPGA I/O banks or audio codecs in subnotebooks powered by 3-cell NiMH batteries (3.6 V nominal). IC Role / Device Role / Timing Role: Adjustable-output buck converter using external R1/R2 divider; MODE pin tied low for automatic PFM/PWM optimization. Use Value: Delivers >90% efficiency across 10 mA–600 mA load range - extending battery life during mixed-use workloads without manual mode switching. |
Use Scenario: Providing clean, regulated 5 V or 3.3 V bias for DSL line drivers and analog front-end circuits in residential gateways. IC Role / Device Role / Timing Role: Low-noise, high-PWM-frequency converter minimizing interference with upstream/downstream ADSL/VDSL signal bands. Use Value: Fixed 1.25 MHz operation avoids spectral overlap with DSL band edges (e.g., 138–2208 kHz), simplifying EMI filtering requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62021DGQ | Identical specs except active-low MODE pin logic; otherwise pin-compatible and functionally equivalent. | Requires inverted MODE control signal; suitable when system GPIO drives MODE low to enable PWM mode. | Select TPS62021DGQ only if existing firmware/hardware already implements active-low MODE signaling. |
| TPS62040DGQ | Higher 2-A output, 3-MHz switching, smaller 2.5-V min input; different pinout and no PowerPAD™ in DGQ variant. | Not drop-in: requires layout change, new inductor (1.5 µH), and revised feedback network; supports higher-power SoCs. | Choose TPS62040DGQ only when >600 mA output or faster transient response is required - not a direct replacement. |
Compared with TPS62020DGQ, TPS62021DGQ offers identical performance with reversed MODE logic - ideal for design reuse with minor control signal adjustment; TPS62040DGQ provides higher current and frequency but demands full schematic and layout revision, making it suitable only for next-generation upgrades.
Availability
TPS62020DGQ is available at Aetrix Electronics and suitable for PDA power management, USB modem conversion, and notebook subsystem supply requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62020DGQ 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 ICs, with decades of expertise in high-efficiency DC-DC conversion for portable and industrial applications.
The TPS6202x family was designed specifically for battery-powered portable electronics requiring high light-load efficiency, small solution size, and robust transient response - targeting PDAs, smart phones, and subnotebooks circa 2003–2004.
FAQ
What is the recommended input capacitor for TPS62020DGQ?
The TPS62020DGQ requires a minimum 10 µF low-ESR ceramic input capacitor placed as close as possible to the VIN and PGND pins. TI recommends X5R/X7R dielectrics in 0805 or 1206 case sizes (e.g., Taiyo Yuden JMK212BJ106MG) to suppress high-frequency input ripple and prevent coupling into adjacent circuits. Larger values improve filtering but are not required for stability.
Does TPS62020DGQ support fixed-output voltage configurations?
No - TPS62020DGQ is the adjustable-output version of the family. Fixed-output variants include TPS62026DGQ (3.3 V) and TPS62021DGQ (3.3 V with active-low MODE). To set output voltage on TPS62020DGQ, connect an external resistor divider between VOUT and GND, with FB tied to the midpoint; R1 + R2 ≤ 1 MΩ and VREF = 0.5 V.
How does the MODE pin affect efficiency in TPS62020DGQ?
When MODE is pulled low, TPS62020DGQ automatically transitions between PWM (medium/heavy load) and PFM (light load) to maximize efficiency across the full 0–600 mA range - achieving >85% at 1 mA. When MODE is pulled high, it forces continuous PWM operation at 1.25 MHz, improving noise predictability but reducing light-load efficiency by ~10–15 percentage points.
What thermal design guidance applies to TPS62020DGQ's PowerPad™ package?
The MSOP-10 PowerPad™ on TPS62020DGQ must be soldered to a solid copper GND plane with ≥4 thermal vias (0.3 mm diameter) connecting to inner/ground layers. TI specifies RθJA = 60°C/W with this layout; omitting the PowerPad™ connection degrades thermal resistance by >40%, risking thermal shutdown above 400 mA at 85°C ambient.
Can TPS62020DGQ operate with input voltage below 2.5 V?
No - the absolute minimum input voltage is 2.5 V per datasheet Recommended Operating Conditions. Below this, undervoltage lockout (UVLO) disables switching; the threshold is typically 2.3 V with hysteresis. Attempting operation at 2.4 V may cause erratic behavior, dropout, or failure to regulate, especially under load.
TPS62020DGQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HVSSOP
TPS62020DGQ FAQ
1.How can I place an order for TPS62020DGQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62020DGQ 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 TPS62020DGQ reliable?
The price and inventory of TPS62020DGQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62020DGQ is usually 5 days.
3.What payment methods are accepted for TPS62020DGQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62020DGQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62020DGQ?
TPS62020DGQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62020DGQ 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 TPS62020DGQ?
For technical support, including TPS62020DGQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62020DGQ requirements.
6.How does Aetrix verify that TPS62020DGQ is sourced from the original manufacturer or authorized distributors?
All TPS62020DGQ 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 TPS62020DGQ meets industry standards.
7.What is the process for return or replacement of TPS62020DGQ?
All TPS62020DGQ units undergo pre-shipment inspection (PSI). If there is an issue with TPS62020DGQ, 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 TPS62020DGQ part is unused and in its original packaging.
Return procedure for TPS62020DGQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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