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Texas Instruments TPS62021DGQRG4
- Part No.:
- TPS62021DGQRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62021DGQRG4.pdf
- Description:
- IC REG BUCK ADJ 600MA 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,118
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Product details
Overview
TPS62021DGQRG4 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, operates from 2.5 V to 6.0 V input, supports adjustable output down to 0.7 V, and features active-low MODE pin for power-save mode (PFM) or forced PWM operation - used in PDA power rails and USB-powered modem voltage regulation.
For engineers reviewing the TPS62021DGQRG4 datasheet, TPS62021DGQRG4 pinout, TPS62021DGQRG4 application, or TPS62021DGQRG4 equivalent, key selection criteria include its 18 µA quiescent current in light-load PFM mode, 95% peak efficiency at 600 mA, 10-pin MSOP PowerPad™ package with dual SW/PGND pins, and active-low MODE logic distinguishing it from TPS62020.
Technical Context
The TPS62021DGQRG4 implements a voltage-mode synchronous buck controller with input voltage feed-forward, enabling fast line/load transient response and stable operation with small ceramic capacitors. Its dual-MOSFET power stage integrates a 115 mΩ P-channel high-side switch and 85 mΩ N-channel low-side rectifier at 3.6 V, supporting 100% duty cycle for ultra-low dropout during battery discharge.
Power management is governed by an internal comparator-based transition between PWM (1.25 MHz) and PFM (625 kHz typ.) modes, triggered by average inductor current crossing ~100 mA. Dynamic voltage positioning uses ±0.8%/±1.6% output thresholds to minimize transient droop/overshoot without requiring large output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 600 mA max - sufficient for DSP core rails and USB peripheral power |
| Input voltage range | 2.5 V to 6.0 V - compatible with single Li-ion (2.7–4.2 V) or 3×NiMH (3.6 V nominal) |
| Switching frequency | 1.25 MHz fixed PWM / 625 kHz PFM - enables compact 3.3–10 µH inductors and <22 µF ceramic output caps |
| Quiescent current | 18 µA typ. - extends battery life in standby/sleep states of portable devices |
| Feedback reference | 0.5 V - allows precise adjustable outputs (e.g., 1.2 V, 1.8 V, 3.3 V) using high-impedance resistor dividers |
| Efficiency peak | 95% at 600 mA - reduces thermal load in space-constrained handheld enclosures |
| MODE pin logic | Active-low - pulling MODE low enables automatic PWM/PFM; high forces PWM-only operation |
Pinout & Package
TPS62021DGQRG4 is housed in a 10-pin MSOP PowerPad™ package (DGQ), where the exposed thermal pad must be soldered to PCB ground for thermal and electrical integrity. Pin 1 is EN; pins 2–3 are VIN; pin 4 is GND; pin 5 is FB; pins 6 is MODE; pins 7–8 are SW; pins 9–10 are PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Pull low to shut down device (0.1 µA ISD); must not float - ties to system power sequencing |
| VIN (Pins 2, 3) | Main power input | Parallel connection reduces trace resistance and improves high-current path integrity |
| GND (Pin 4) | Analog ground reference | Separate from PGND to isolate feedback loop from high di/dt noise |
| FB (Pin 5) | Feedback voltage sense | Connects to resistor divider midpoint; 0.5 V reference enables wide output voltage range |
| MODE (Pin 6) | Operating mode select | Active-low: low = auto PWM/PFM; high = forced PWM - distinguishes TPS62021 from TPS62020 |
| SW (Pins 7, 8) | Switch node | Drain connection of internal P/N MOSFETs; requires minimal-area layout to reduce EMI |
| PGND (Pins 9, 10) | Power ground return | Parallel pins lower ground impedance for high-frequency switching current return path |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic voltage positioning | ±0.8%/±1.6% output thresholds reduce transient droop to <1% without increasing output capacitance |
| 100% duty cycle operation | Maintains regulation down to VIN = VOUT + IOUT × rDS(on), extending usable battery voltage range |
| Internal softstart | Digital ramp-up limits inrush current to ILIM/8 → ILIM/4 → ILIM/2 → full limit, preventing input sag on weak sources |
| Thermal shutdown | Activates at 150°C junction temperature; resumes operation after cooldown to ~150°C - protects against sustained overload |
| Short-circuit protection | Reduces switching frequency and current limit to 50% during startup if VOUT < 50% nominal - prevents latch-up into fault |
Applications
| Handheld Computing Power | USB-Powered Modem |
|---|---|
|
Use Scenario: Regulating 1.8 V core supply for ARM9-based PDA SoC operating from single Li-ion cell (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary synchronous buck converter delivering 600 mA with dynamic voltage positioning to absorb CPU burst loads. Use Value: 95% efficiency at full load minimizes heat in sealed plastic enclosure; 18 µA quiescent current preserves battery during suspend-to-RAM. |
Use Scenario: Generating stable 3.3 V rail from USB 5 V bus for ADSL2+ modem PHY IC. IC Role / Device Role / Timing Role: Step-down regulator with forced PWM mode (MODE = high) to suppress 1.25 MHz switching noise near sensitive analog receive path. Use Value: Fixed-frequency operation simplifies EMI filtering; 1.25 MHz allows use of 3.3 µH inductor and 10 µF ceramic cap - reducing BOM size vs. lower-frequency alternatives. |
| Low-Voltage DSP Core Supply | Notebook Subsystem Rail |
|
Use Scenario: Providing 1.2 V @ 600 mA to TI C64x+ DSP in portable medical imaging device powered by 3×NiMH. IC Role / Device Role / Timing Role: Adjustable-output buck converter using external R1/R2 divider; MODE pin tied low for automatic PFM/PWM transition. Use Value: 0.5 V reference enables tight tolerance (±3%) at 1.2 V; PFM mode maintains >85% efficiency at 10 mA idle current. |
Use Scenario: Generating 5 V → 3.3 V conversion for PCIe slot auxiliary power in subnotebook design. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator replacing linear LDO to reduce thermal dissipation in confined motherboard region. Use Value: 95% efficiency cuts power loss from 1.7 W (LDO) to 0.18 W - eliminating need for heatsink and enabling thinner chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62020DGQR | Active-high MODE pin; otherwise identical electrical specs and pinout | Requires inverted MODE signal logic - unsuitable where host MCU GPIO drives MODE directly without level shift | Select TPS62020DGQR only when system-level control logic aligns with active-high enable convention |
| TPS62060DSGR | Higher 2.25 MHz switching frequency; 500 mA output; smaller 6-pin WSON package | Better suited for ultra-thin designs with strict height constraints but sacrifices 100 mA output headroom | Choose TPS62060DSGR when board area and profile are critical and 500 mA load ceiling is acceptable |
Compared with TPS62021DGQRG4, TPS62020DGQR requires no hardware change but mandates firmware-level MODE polarity inversion, while TPS62060DSGR trades output current and thermal margin for footprint reduction - making TPS62021DGQRG4 optimal for balanced performance in mid-power portable systems.
Availability
TPS62021DGQRG4 is available at Aetrix Electronics and suitable for handheld computing power, USB-powered modem, low-voltage DSP core supply, and notebook subsystem rail applications requiring stable component supply across production lifecycles.
Supply support for TPS62021DGQRG4 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.
The TPS6202x family was designed specifically for battery-operated portable electronics needing high light-load efficiency, small solution size, and robust transient response - targeting PDAs, smart phones, and subnotebooks circa early 2000s.
FAQ
What is the function of the MODE pin on the TPS62021DGQRG4?
The MODE pin on the TPS62021DGQRG4 is an active-low control input that determines operating mode: pulling MODE low enables automatic PWM/PFM transition based on load current, while pulling MODE high forces fixed-frequency PWM operation. This distinguishes the TPS62021DGQRG4 from the TPS62020, which uses active-high MODE logic. The pin accepts standard CMOS voltage levels and draws ≤1 µA bias current.
Does the TPS62021DGQRG4 support adjustable output voltages?
Yes, the TPS62021DGQRG4 supports adjustable output voltages from 0.7 V to VIN using an external resistor divider connected to the FB pin. Its internal 0.5 V reference enables precise setting of common rails like 1.2 V, 1.8 V, or 3.3 V. Resistor values must satisfy R1 + R2 ≤ 1 MΩ for stability, and optional RC filtering (C1/C2) can reduce noise sensitivity without degrading transient response.
What package type does the TPS62021DGQRG4 use, and how is thermal management handled?
The TPS62021DGQRG4 uses a 10-pin MSOP PowerPad™ package (DGQ suffix). Thermal performance relies critically on soldering the exposed PowerPAD to a large PCB copper area connected to system ground via multiple thermal vias. At TA = 85°C, the package dissipates up to 667 mW with RθJA = 60°C/W - requiring careful layout per TI's SLVS076C datasheet guidelines to avoid thermal shutdown under continuous 600 mA load.
How does the TPS62021DGQRG4 achieve high efficiency at light loads?
The TPS62021DGQRG4 achieves up to 95% peak efficiency and maintains >85% efficiency at 10 mA by entering power-save mode (PFM) below ~100 mA load. In PFM mode, switching frequency drops to ~625 kHz and gate drive is optimized for minimal quiescent current (18 µA typ.), while dynamic voltage positioning keeps output ripple within ±1% of nominal. This eliminates the efficiency cliff typical of fixed-frequency converters at light loads.
Can the TPS62021DGQRG4 operate with a 2.5 V input and 1.8 V output?
Yes, the TPS62021DGQRG4 is fully specified to operate with VIN = 2.5 V and VOUT = 1.8 V at up to 600 mA. Its 100% duty-cycle capability ensures regulation even when VIN approaches VOUT, and the 1.25 MHz switching frequency allows use of small 6.2–10 µH inductors. Efficiency remains >88% under these conditions, as confirmed in Figure 2 of the SLVS076C datasheet.
TPS62021DGQRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
TPS62021DGQRG4 FAQ
1.How can I place an order for TPS62021DGQRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62021DGQRG4 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 TPS62021DGQRG4 reliable?
The price and inventory of TPS62021DGQRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62021DGQRG4 is usually 5 days.
3.What payment methods are accepted for TPS62021DGQRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62021DGQRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62021DGQRG4?
TPS62021DGQRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62021DGQRG4 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 TPS62021DGQRG4?
For technical support, including TPS62021DGQRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62021DGQRG4 requirements.
6.How does Aetrix verify that TPS62021DGQRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62021DGQRG4 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 TPS62021DGQRG4 meets industry standards.
7.What is the process for return or replacement of TPS62021DGQRG4?
All TPS62021DGQRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62021DGQRG4, 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 TPS62021DGQRG4 part is unused and in its original packaging.
Return procedure for TPS62021DGQRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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