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Texas Instruments TPS62020DRCR
- Part No.:
- TPS62020DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62020DRCR.pdf
- Description:
- IC REG BUCK ADJ 600MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,217
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Product details
Overview
TPS62020DRCR from Texas Instruments is a synchronous step-down DC-DC converter optimized for battery-powered portable electronics, delivering up to 600 mA output current with 95% peak efficiency, 1.25 MHz fixed switching frequency, and adjustable output voltage from 0.7 V to VIN across 2.5 V–6.0 V input range - used in PDA power rails and low-voltage DSP supplies.
For engineers reviewing the TPS62020DRCR datasheet, TPS62020DRCR pinout, TPS62020DRCR application, or TPS62020DRCR equivalent, key selection criteria include its Power Save Mode (PFM/PWM auto-transition), 18 µA quiescent current, 10-pin QFN 3×3 mm PowerPad™ package, and dynamic voltage positioning for transient response in space-constrained Li-ion systems.
Technical Context
The TPS62020DRCR employs a voltage-mode control architecture with input voltage feed-forward, enabling fast line/load regulation and stable operation with small ceramic capacitors. Its internal 0.5 V reference and Gm amplifier directly govern duty cycle via feedback voltage at the FB pin.
It integrates dual MOSFETs - a P-channel high-side switch (115 mΩ typical @ 3.6 V) and N-channel synchronous rectifier (85 mΩ typical @ 3.6 V) - with thermal shutdown (150°C), undervoltage lockout (1.5–2.3 V), and soft-start limiting inrush current. MODE pin logic is active-high for forced PWM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 600 mA max - supports single-core DSPs and USB peripherals without external current boosting |
| Switching frequency | 1.25 MHz fixed - enables compact 3.3–10 µH inductors and avoids AM radio band interference |
| Quiescent current | 18 µA typical - extends battery life in standby mode for handheld devices |
| Input voltage range | 2.5 V to 6.0 V - compatible with single Li-ion (2.7–4.2 V), 3×NiMH (3.6 V), or 5 V USB inputs |
| Feedback reference | 0.5 V ±0% - sets precise output via external resistor divider; enables 0.7 V minimum output |
| Efficiency peak | 95% @ 1.8 V/3.6 V - minimizes thermal load in sealed enclosures and improves runtime |
| Thermal shutdown | 150°C junction - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
TPS62020DRCR uses a 10-pin QFN 3 mm × 3 mm package with exposed PowerPAD™ thermal pad (must be soldered to PCB ground plane for thermal and electrical performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high logic; <0.4 V disables device (0.1 µA shutdown current), >1.4 V enables with soft-start |
| VIN (Pins 2,3) | Power input | Dual input pins reduce trace resistance and improve high-current path integrity into internal switches |
| GND (Pin 4) | Analog ground | Reference for FB and control circuitry; separate from PGND to minimize noise coupling |
| FB (Pin 5) | Feedback input | Connects to resistor divider; senses output voltage; 0.5 V reference enables precise adjustable regulation |
| MODE (Pin 6) | Operation mode select | Active-high: pull high for fixed-frequency PWM; pull low for automatic PFM/PWM transition |
| SW (Pins 7,8) | Switch node | Drain connection of internal P- and N-channel MOSFETs; requires minimal loop area for EMI control |
| PGND (Pins 9,10) | Power ground | High-current return path for inductor and MOSFETs; tied to PowerPAD™ for thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode | Automatic PFM/PWM transition below ~10 mA load - maintains >85% efficiency down to microamp loads |
| Dynamic voltage positioning | Output biased +0.8% at light load - provides headroom for 100 mA→600 mA transients without undershoot |
| 100% duty cycle operation | Enables dropout <100 mV at full load - extends usable battery range down to 2.5 V input |
| Internal soft-start | Staged current limit ramp (ILIM/8 → ILIM/4 → ILIM/2 → 1.1 A) - prevents input rail collapse during startup |
| Synchronous rectification | Integrated N-channel MOSFET replaces diode - eliminates 0.3–0.5 V forward drop, improving light-load efficiency |
Applications
| PDA & Pocket PC Core Rail | USB-Powered Modem Supply |
|---|---|
Use Scenario: Powering ARM9-based PDA main processor (1.8 V @ 500 mA) from single Li-ion cell (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator providing dynamically scaled core voltage with fast load transient response. Use Value: Dynamic voltage positioning reduces output capacitor count to one 22 µF ceramic; 95% efficiency at 3.6 V input extends runtime by 12% vs. older 85% converters. |
Use Scenario: Generating 3.3 V @ 400 mA for USB 2.0 modem ICs powered directly from host 5 V bus. IC Role / Device Role / Timing Role: Input-decoupled step-down converter isolating modem analog/digital sections from USB noise. Use Value: 1.25 MHz switching allows use of 3.3 µH shielded inductor (5.0×5.0 mm); 18 µA quiescent current meets USB suspend current budget. |
| Notebook Subsystem Voltage | xDSL Line Card Bias |
Use Scenario: Supplying 1.2 V @ 600 mA to DDR memory controller in subnotebook, fed from 5 V system rail. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with tight output tolerance (±3%) for memory interface stability. Use Value: Adjustable 0.7–VIN range supports future voltage scaling; 10-pin QFN footprint fits dense BGA routing zones near memory stack. |
Use Scenario: Providing 5 V @ 300 mA bias to ADSL line driver ICs in customer-premises equipment. IC Role / Device Role / Timing Role: Noise-immune DC-DC stage rejecting upstream switching noise from AC-DC adapter. Use Value: Fixed-frequency PWM mode (via MODE pin) simplifies EMI filtering; 95% efficiency reduces heatsink requirement in sealed enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62021DRCR | Active-low MODE pin (vs. TPS62020DRCR's active-high); identical electrical specs and pinout | Requires inverted logic signal for forced PWM; otherwise drop-in replacement in automatic mode | Select when system MCU GPIO drives MODE low to enable PWM - no hardware change needed beyond signal polarity |
| TPS62040DRCR | Higher 2-MHz switching frequency; 1.2 A output; 12 µA IQ; same QFN-10 package | Better suited for ultra-thin designs needing smaller inductors; not pin-compatible due to different EN/MODE logic mapping | Choose for next-gen designs requiring >600 mA or tighter board area; requires layout revision and firmware update for EN/MODE handling |
Compared with TPS62021DRCR, TPS62020DRCR offers simpler logic interface for PWM forcing but requires level-shifting if legacy control signals are active-low; versus TPS62040DRCR, it trades higher current and frequency for proven reliability in cost-sensitive portable designs with mature layout support.
Availability
TPS62020DRCR is available at Aetrix Electronics and suitable for PDA power management, USB peripheral supplies, notebook subsystem rails, and xDSL line card biasing requiring stable component supply across long production lifecycles.
Supply support for TPS62020DRCR 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 over 50 years of innovation in energy-efficient power conversion.
The TPS6202x product line was designed specifically for high-efficiency, low-quiescent-current DC-DC conversion in space- and battery-constrained portable electronics - emphasizing thermal performance, transient response, and ease of integration in Li-ion-powered systems.
FAQ
What is the recommended input capacitor for TPS62020DRCR?
A minimum 10 µF ceramic capacitor with low ESR is required at the VIN pins of the TPS62020DRCR to suppress high-frequency switching noise and prevent input rail collapse. TI recommends X5R/X7R dielectrics in 0805 or 1206 case sizes (e.g., Taiyo Yuden JMK212BJ106MG). Larger values improve filtering but are not electrically necessary - the TPS62020DRCR remains stable with 10 µF alone under all operating conditions.
Does TPS62020DRCR support fixed-output voltage configurations?
No - the TPS62020DRCR is the adjustable-output version of the family and requires an external resistor divider on the FB pin to set output voltage between 0.7 V and VIN. Fixed-output variants exist (e.g., TPS62026DRCR for 3.3 V), but TPS62020DRCR itself has no internal feedback network and must be configured externally per application needs.
How does the MODE pin affect efficiency in TPS62020DRCR?
In TPS62020DRCR, pulling MODE high forces continuous PWM mode (1.25 MHz), yielding predictable EMI but lower light-load efficiency (e.g., ~75% at 1 mA). Pulling MODE low enables automatic Power Save Mode, switching to PFM at light loads and sustaining >85% efficiency down to 10 µA - critical for battery runtime in always-on portable devices.
What thermal design guidance applies to TPS62020DRCR's PowerPAD™?
The exposed thermal pad of the TPS62020DRCR QFN package must be soldered to a solid PCB copper pour connected to system ground. TI specifies ≥4 thermal vias (0.3 mm diameter) under the pad, filled or capped, to inner ground planes. Without this, junction temperature can exceed 125°C at 600 mA - proper PowerPAD™ implementation reduces θJA from 48.7°C/W to ≤35°C/W in typical 4-layer boards.
Can TPS62020DRCR operate with input voltage below 2.5 V?
No - the absolute minimum input voltage for functional operation of TPS62020DRCR is 2.5 V per datasheet Recommended Operating Conditions. Below this, the undervoltage lockout (UVLO) engages (threshold 1.5–2.3 V), disabling switching. Attempting operation at 2.4 V may cause erratic behavior or failure to regulate; for sub-2.5 V inputs, consider TI's TPS621xx series or discrete LDO alternatives.
TPS62020DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN 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):
- 2.5V
- 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-VSON (3x3)
TPS62020DRCR FAQ
1.How can I place an order for TPS62020DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62020DRCR 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 TPS62020DRCR reliable?
The price and inventory of TPS62020DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62020DRCR is usually 5 days.
3.What payment methods are accepted for TPS62020DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62020DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62020DRCR?
TPS62020DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62020DRCR 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 TPS62020DRCR?
For technical support, including TPS62020DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62020DRCR requirements.
6.How does Aetrix verify that TPS62020DRCR is sourced from the original manufacturer or authorized distributors?
All TPS62020DRCR 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 TPS62020DRCR meets industry standards.
7.What is the process for return or replacement of TPS62020DRCR?
All TPS62020DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62020DRCR, 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 TPS62020DRCR part is unused and in its original packaging.
Return procedure for TPS62020DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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