My Inquiry
My Account
Texas Instruments TPS62021DRCRG4
- Part No.:
- TPS62021DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62021DRCRG4.pdf
- Description:
- IC REG BUCK ADJ 600MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,286
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62021DRCRG4 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 1.25 MHz fixed switching frequency, 2.5 V to 6.0 V input range, and adjustable 0.7 V to VIN output voltage. It features active-low MODE pin control, power-save mode (PFM) at light loads, and 10-pin QFN 3×3 mm PowerPad™ package for high thermal performance in space-constrained PDA and smart phone power rails.
For engineers reviewing the TPS62021DRCRG4 datasheet, TPS62021DRCRG4 pinout, TPS62021DRCRG4 application, or TPS62021DRCRG4 equivalent, this page delivers verified technical context, validated pin functions, confirmed efficiency curves across load and input voltage, real-world transient response data, and precise alternative selection guidance - all grounded in TI's SLVS076C revision December 2004 production datasheet.
Technical Context
The TPS62021DRCRG4 implements a voltage-mode synchronous buck controller with input voltage feed-forward, enabling fast line/load regulation and stable operation with small ceramic capacitors (10 µF input/output). Its dual-MOSFET power stage integrates a P-channel high-side switch (rDS(on) = 115 mΩ typ. at 3.6 V) and N-channel synchronous rectifier (rDS(on) = 85 mΩ typ. at 3.6 V), supporting 100% duty cycle for ultra-low dropout during battery depletion.
It operates in forced PWM mode when MODE is pulled low (active-low logic), and automatically transitions between PWM (1.25 MHz) and PFM (625 kHz typ.) based on average inductor current, with dynamic voltage positioning thresholds set at ±0.8%/±1.6% around nominal output to minimize transient droop/overshoot using only 10 µF output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 600 mA max - supports full-power operation of DSPs, CPUs, and USB peripherals without external current boosting |
| Switching frequency | 1.25 MHz fixed (PWM) / 625 kHz (PFM) - enables compact LC filter design and minimizes RF interference in xDSL and notebook applications |
| Input voltage range | 2.5 V to 6.0 V - compatible with single Li-ion (2.7–4.2 V), 3-cell NiMH/NiCd (3.6 V nominal), and 5 V USB bus inputs |
| Output voltage range | 0.7 V to VIN - adjustable via external resistor divider; supports 1.2 V, 1.8 V, 3.3 V, and other low-voltage rails for modern processors |
| Quiescent current | 18 µA typical - extends battery life in always-on standby modes of pocket PCs and smart phones |
| Efficiency peak | 95% at 1.8 V/3.6 V - achieved via synchronous rectification and low rDS(on) MOSFETs, reducing thermal load in sealed enclosures |
| Reference voltage | 0.5 V ±1% - sets feedback accuracy; enables ±3% total output voltage tolerance over temperature and load |
| Thermal shutdown | 150°C junction - protects against sustained overload or poor PCB thermal design while allowing recovery at ~125°C |
Pinout & Package
TPS62021DRCRG4 uses a 10-pin QFN 3 mm × 3 mm package with exposed PowerPad™ thermal pad (pin 11, connected to PGND). The PowerPad must be soldered to a dedicated PCB ground plane with ≥4 thermal vias for optimal thermal performance (RθJA = 48.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Active-high digital control: tie to VIN to enable, GND to shut down (0.1 µA ISD) |
| 2,3 VIN | Power input | Dual input pins reduce trace inductance and IR drop; accept 2.5–6.0 V with 7 V absolute max |
| 4 GND | Analog ground | Reference for FB and internal bias; must be star-connected to PowerPad ground to avoid noise coupling |
| 5 FB | Feedback input | Connects to resistor divider (R1/R2); internal 0.5 V reference enables precise output voltage programming |
| 6 MODE | Mode control | Active-low: pull low for automatic PWM/PFM, pull high for forced PWM - distinguishes TPS62021 from TPS62020 |
| 7,8 SW | Switch node | Drain connection of internal P- and N-channel MOSFETs; requires minimal loop area to suppress EMI |
| 9,10 PGND | Power ground | High-current return path for inductor and MOSFETs; must be tied directly to PowerPad and separated from analog GND |
Key Features
| Feature | Design Value |
|---|---|
| Power-save mode (PFM) | Maintains >85% efficiency at 1 mA load via 625 kHz switching, reducing quiescent loss in sleep states |
| Dynamic voltage positioning | Pre-emptively raises output by 0.8% at light load, minimizing voltage droop during 0→600 mA transients |
| 100% duty cycle operation | Enables regulation down to VIN – (IOUT × rDS(on)), extending usable battery range in Li-ion systems |
| Internal softstart | Staged current limit (ILIM/8 → ILIM/4 → ILIM/2 → 1.1 A) prevents input rail collapse during startup into large capacitive loads |
| Short-circuit protection | Halves switching frequency and current limit during fault, limiting power dissipation without latch-off |
| Thermal shutdown | Hysteresis-based protection (150°C trip, ~125°C recovery) prevents permanent damage during sustained overload |
Applications
| PDA & Pocket PC Power Rail | USB-Powered Modem |
|---|---|
|
Use Scenario: Regulating 3.3 V or 1.8 V from 5 V USB bus for ARM-based PDA mainboard logic and display interface. IC Role / Device Role / Timing Role: Primary synchronous buck regulator supplying core voltage to application processor and SDRAM controller. Use Value: 95% efficiency at 500 mA reduces heat buildup in thin form factor; 1.25 MHz switching allows <10 µH inductor and 10 µF ceramic output cap. |
Use Scenario: Generating stable 3.3 V rail from USB 5 V input for ADSL/VDSL modem PHY and microcontroller. IC Role / Device Role / Timing Role: Main DC-DC converter powering DSL line driver ICs and packet processing SoC. Use Value: Low 18 µA quiescent current extends standby time; PFM mode maintains >80% efficiency at 10 mA idle current. |
| Smartphone Application Processor Core | Notebook Subsystem Rail |
|
Use Scenario: Providing dynamically scalable 1.2 V core supply to baseband processor under variable workload. IC Role / Device Role / Timing Role: Adjustable-output buck converter controlled via PMIC I²C interface for DVFS (dynamic voltage/frequency scaling). Use Value: Active-low MODE pin simplifies GPIO-driven mode selection; 0.7–VIN range supports future low-voltage nodes. |
Use Scenario: Delivering 1.8 V or 2.5 V to embedded controller (EC), keyboard controller, or sensor hub in ultrabook designs. IC Role / Device Role / Timing Role: Secondary point-of-load regulator isolated from main CPU VRM for low-noise subsystem operation. Use Value: 100% duty cycle ensures regulation even as main battery drops to 2.7 V; PowerPad thermal design sustains 600 mA continuous. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62020DRCR | Active-high MODE pin; otherwise identical electrical specs, pinout, and package | Requires inverted logic signal for forced PWM; unsuitable where MODE is driven directly by open-drain GPIO | Select TPS62020DRCR only if system-level control logic provides active-high MODE assertion |
| TPS62231DRVR | Higher 3 MHz switching frequency, 400 mA rating, smaller 2×2 mm WSON package, different MODE behavior | Better suited for ultra-compact wearables; lacks 100% duty cycle and dynamic voltage positioning | Choose TPS62231DRVR only when board space is critical and 600 mA load is not required |
Compared with TPS62020DRCR, TPS62021DRCRG4 offers direct compatibility with active-low control signals, eliminating level-shifting overhead; versus TPS62231DRVR, it delivers higher current and advanced transient response features essential for legacy portable computing platforms.
Availability
TPS62021DRCRG4 is available at Aetrix Electronics and suitable for PDA power management, USB modem subsystems, smartphone baseband supplies, and notebook embedded controller rails requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS62021DRCRG4 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 decades of expertise in high-efficiency DC-DC conversion for portable and industrial applications.
The TPS6202x family was designed specifically for battery-powered portable devices requiring high efficiency across wide load ranges, including PDAs, smart phones, and subnotebooks - emphasizing low quiescent current, small solution size, and robust transient performance.
FAQ
What is the function of the MODE pin on the TPS62021DRCRG4?
The MODE pin on the TPS62021DRCRG4 is an active-low control input that determines operating mode: pulling MODE low enables automatic PWM/PFM transition, while pulling MODE high forces fixed-frequency PWM operation. This distinguishes it from the TPS62020, which uses active-high MODE logic. The pin accepts standard CMOS logic levels (VIL ≤ 0.4 V, VIH ≥ 1.4 V) and draws only 0.01–1.0 µA bias current.
Does the TPS62021DRCRG4 support 100% duty cycle operation, and under what conditions?
Yes, the TPS62021DRCRG4 supports 100% duty cycle operation to maintain regulation when input voltage approaches output voltage - critical for maximizing battery runtime. This occurs automatically when VIN ≤ VOUT + (IOUT × rDS(on)), where rDS(on) is the P-channel MOSFET on-resistance (115 mΩ typ. at 3.6 V). No external components or configuration are required; the feature is built into the control architecture.
What is the recommended output capacitor value for stable operation of the TPS62021DRCRG4?
Texas Instruments specifies a minimum 10 µF ceramic output capacitor for the TPS62021DRCRG4, with 22 µF recommended for improved transient response. Ceramic types (X5R/X7R) in 0805 or larger case sizes are preferred due to low ESR; tantalum may be used if ceramic is unavailable. The device's fast voltage-mode control ensures stability with these values - no additional compensation network is needed.
How does the TPS62021DRCRG4 achieve high efficiency at light loads?
The TPS62021DRCRG4 achieves high light-load efficiency (>85% at 1 mA) by entering power-save mode (PFM), reducing switching frequency to 625 kHz and minimizing gate drive and switching losses. Unlike burst-mode converters, it maintains regulated output with dynamic voltage positioning (±0.8% offset), avoiding audible noise and output ripple issues common in discontinuous conduction mode.
Is the TPS62021DRCRG4 pin-compatible with other devices in the TPS6202x family?
Yes, the TPS62021DRCRG4 shares identical 10-pin QFN 3×3 mm package, pinout, and footprint with TPS62020DRCR and TPS62026DRCR. All three variants use the same thermal pad layout and PCB land pattern. The only functional difference is MODE pin polarity (active-low for TPS62021 vs. active-high for TPS62020), making them mechanically interchangeable with minor control logic adjustment.
TPS62021DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
TPS62021DRCRG4 FAQ
1.How can I place an order for TPS62021DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62021DRCRG4 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 TPS62021DRCRG4 reliable?
The price and inventory of TPS62021DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62021DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS62021DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62021DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62021DRCRG4?
TPS62021DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62021DRCRG4 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 TPS62021DRCRG4?
For technical support, including TPS62021DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62021DRCRG4 requirements.
6.How does Aetrix verify that TPS62021DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62021DRCRG4 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 TPS62021DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS62021DRCRG4?
All TPS62021DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62021DRCRG4, 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 TPS62021DRCRG4 part is unused and in its original packaging.
Return procedure for TPS62021DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62021DRCRG4 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
