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Texas Instruments TPS65020RHAR
- Part No.:
- TPS65020RHAR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS65020RHAR.pdf
- Description:
- IC BATT PWR MGMT LI-ION 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,148
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Product details
Overview
TPS65020RHAR from Texas Instruments is a highly integrated power management IC (PMIC) for single-cell Li-Ion/Li-Polymer systems, delivering three synchronous step-down converters (1.2-A, 1-A, 800-mA), two 200-mA LDOs, and an RTC backup LDO with push-button control. It supports dynamic voltage scaling for processor cores and provides battery-backed real-time clock operation in portable devices such as smartphones and PDAs.
For engineers reviewing the TPS65020RHAR datasheet, TPS65020RHAR pinout, TPS65020RHAR application, or TPS65020RHAR equivalent, key selection criteria include its triple-buck architecture with independent enable pins, I²C interface for VDCDC3 voltage programming, low-quiescent-current PFM mode (85 µA), and integrated power-good monitoring for system reset coordination.
Technical Context
The TPS65020RHAR integrates three independent buck converters sharing a common 1.5-MHz oscillator but operating with separate enable, feedback, and switch-node terminals. Each converter supports fixed or resistor-divider-adjustable output voltages - DCDC1 (3.0/3.3 V), DCDC2 (1.8/2.5 V), and DCDC3 (1.3/1.55 V core) - with programmable PWM/PFM modes via dedicated FPWM pins.
Its dual 200-mA LDOs (VLDO1/VLDO2) accept input from either battery or a buck output, while the VRTC LDO delivers 20 mA with automatic switchover between VSYSIN and VBACKUP. The device includes dedicated comparators (LOWBAT, PWRFAIL), debounced push-button I/O (PB_IN/PB_OUT), and a user-configurable reset delay via external capacitor on TRESPWRON.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCDC1 Output Current | 1.2 A max - powers system voltage rail (e.g., 3.3-V IO domain) with 97% peak efficiency |
| DCDC3 Output Current | 800 mA max - supplies processor core with dynamically scalable voltage (1.3 V / 1.55 V default) |
| LDO1/LDO2 Output | 200 mA each - intended for SDRAM and PLL rails in Intel PXA270-based designs |
| I²C Interface Speed | Up to 400 kHz - enables real-time VDCDC3 voltage adjustment and interrupt masking |
| Quiescent Current | 85 µA (all converters enabled, PFM mode) - extends battery life in standby without sacrificing wake-up responsiveness |
| Thermal Shutdown | 160°C activation with 20°C hysteresis - protects against sustained overload or poor PCB thermal design |
| Package | 40-pin VQFN (6.0 mm × 6.0 mm) - exposes PowerPAD™ for enhanced thermal dissipation in compact handheld layouts |
Pinout & Package
TPS65020RHAR uses a thermally enhanced 40-pin VQFN package (RHA suffix) with exposed PowerPAD™ connected internally to AGND. Pin functions are fully defined per TI SLVS607D Rev D, including dedicated switch nodes (L1/L2/L3), feedback inputs (VDCDC1/VDCDC2/VDCDC3), and independent enable/control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DCDC1_EN (Pin 25) | Digital enable input | Logic-high activates DCDC1; allows sequencing control independent of other rails |
| L1 (Pin 7) | Switch node | Connects to DCDC1 inductor; requires low-ESR ceramic capacitor and careful high-frequency layout |
| VDCDC1 (Pin 9) | Feedback sense input | Direct connection to DCDC1 output enables precise regulation; no external divider needed for fixed outputs |
| DEFDCDC3 (Pin 1) | Default voltage select | Binary input sets DCDC3 output to 1.3 V (low) or 1.55 V (high); overrides I²C setting at power-up |
| TRESPWRON (Pin 26) | Reset timing capacitor | 1-nF capacitor sets 100-ms system reset pulse duration; critical for reliable boot sequencing |
| PB_IN / PB_OUT (Pins 12/13) | Debounced push-button I/O | Enables hardware turn-on/wake-up without host CPU involvement; latched output drives processor reset |
Key Features
| Feature | Design Value |
|---|---|
| Triple synchronous buck converters | Independent 1.2-A/1-A/800-mA outputs eliminate need for discrete regulators and reduce BOM count |
| I²C-compatible serial interface | Supports dynamic core voltage scaling (DVFS) and interrupt masking without adding GPIO overhead |
| Battery backup functionality | Automatic switchover between VSYSIN and VBACKUP ensures RTC operation during main power loss |
| Low-ripple PFM mode | Maintains high light-load efficiency (<85 µA quiescent) while minimizing output voltage ripple for noise-sensitive analog rails |
| Integrated power-good monitoring | Individual PGOOD flags for all five regulated outputs simplify system-level power sequencing and fault detection |
Applications
| Smartphone Power Management | PDA System Power |
|---|---|
Use Scenario: Compact handheld with ARM-based SoC requiring sequenced core, memory, and I/O rails plus RTC backup. IC Role / Device Role: Central PMIC managing all primary power domains and enabling push-button wake-up/reset. Use Value: Reduces external component count by integrating three bucks, two LDOs, RTC LDO, and button logic in one 6×6-mm package. |
Use Scenario: Portable digital assistant with split-supply TMS320 DSP and OMAP1x processor family. IC Role / Device Role: Single-chip power solution delivering 1.8-V memory, 3.3-V I/O, and 1.3-V/1.55-V core rails with dynamic voltage scaling. Use Value: Enables fast core voltage transitions via I²C to match processing load, improving energy efficiency over fixed-voltage alternatives. |
| Digital Still Camera | Internet Audio Player |
Use Scenario: Battery-powered camera with image sensor, flash LED driver, and SD card interface. IC Role / Device Role: Supplies clean, sequenced power to sensor analog supply (LDO), digital core (DCDC3), and I/O (DCDC1/DCDC2). Use Value: Integrated LOWBAT and PWRFAIL comparators trigger graceful shutdown before battery depletion, preserving image data integrity. |
Use Scenario: Portable audio player with flash memory, DAC, and LCD display requiring multiple isolated voltage domains. IC Role / Device Role: Provides stable 1.8-V SRAM rail (LDO1), 2.5-V PLL supply (LDO2), and 3.3-V display interface (DCDC1). Use Value: Dual LDOs with 1% output accuracy and <10-µs regulation time ensure jitter-free audio clocking and crisp display rendering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RHAR | Includes additional 200-mA LDO (VLDO3) and higher DCDC2 current (1.2 A vs. 1 A); same pinout and I²C register map | Required when third LDO or higher memory rail current is needed; otherwise functionally interchangeable | Select TPS65023RHAR only if VLDO3 or >1-A DCDC2 capability is required; otherwise TPS65020RHAR offers lower cost and identical footprint |
| TPS65021RHAR | Omits VRTC LDO and backup switchover circuitry; retains all three bucks and dual LDOs; shares same package and enable logic | Suitable for non-RTC applications where battery backup is unnecessary; lacks VBACKUP/VSYSIN comparator functions | Choose TPS65021RHAR for cost-sensitive designs without RTC requirements; TPS65020RHAR remains mandatory for backup-critical systems |
Compared with TPS65023RHAR and TPS65021RHAR, the TPS65020RHAR uniquely balances full RTC support, triple-buck capability, and minimal LDO count - making it optimal for space-constrained, battery-backed portable systems needing exactly two auxiliary LDOs.
Availability
TPS65020RHAR is available at Aetrix Electronics and suitable for smartphone power management, PDA system power, digital still camera subsystems, internet audio player designs, and portable medical monitors requiring stable component supply across long production lifecycles.
Supply support for TPS65020RHAR 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 battery-powered portable electronics.
The TPS6502x product line was designed specifically for Li-Ion/Li-Polymer powered handheld systems - integrating multi-rail DC-DC conversion, LDOs, RTC backup, and push-button control into compact, thermally optimized packages like the TPS65020RHAR.
FAQ
What is the maximum output current supported by each DC-DC converter in the TPS65020RHAR?
The TPS65020RHAR supports 1.2 A on DCDC1 (system voltage), 1 A on DCDC2 (memory voltage), and 800 mA on DCDC3 (processor core). These ratings are specified under recommended operating conditions with proper thermal management and external components - exceeding them risks thermal shutdown or reduced efficiency. The TPS65020RHAR datasheet confirms these values in Sections 7.8–7.10.
Does the TPS65020RHAR support dynamic voltage scaling for the processor core rail?
Yes, the TPS65020RHAR supports dynamic voltage scaling for the DCDC3 (core) rail via its I²C-compatible serial interface. Voltage can be adjusted in real time using register writes, enabling power optimization during varying computational loads. The TPS65020RHAR also provides DEFDCDC3 pin for hardware-selectable default voltages (1.3 V or 1.55 V) at startup.
How does the TPS65020RHAR handle battery backup for the real-time clock?
The TPS65020RHAR integrates a dedicated VRTC LDO with automatic switchover between VSYSIN (main system input) and VBACKUP (backup battery). When VSYSIN drops below threshold (2.55 V), the device seamlessly transfers RTC power to VBACKUP, maintaining timekeeping. The TPS65020RHAR delivers up to 20 mA at VRTC with ±1% accuracy and 10-µs regulation time.
What package type and thermal characteristics does the TPS65020RHAR use?
The TPS65020RHAR uses a 40-pin VQFN package (RHA) measuring 6.0 mm × 6.0 mm with an exposed PowerPAD™ thermally connected to AGND. Its junction-to-board thermal resistance (RθJB) is 6.6°C/W, and junction-to-ambient (RθJA) is 31.6°C/W - enabling reliable operation up to 85°C ambient when mounted on a 2-layer PCB with adequate copper area.
Can the TPS65020RHAR be used without the I²C interface?
Yes, the TPS65020RHAR operates fully in standalone mode using hardware pins (DEFDCDC1–3, EN signals) for voltage selection and sequencing. I²C is optional and used only for advanced features like dynamic voltage scaling, interrupt masking, or LDO output configuration. All critical power functions remain active without I²C communication - the TPS65020RHAR defaults to pin-defined configurations at power-up.
TPS65020RHAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Power Management
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- -
- Fault Protection:
- Over Temperature, Under Voltage
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (6x6)
TPS65020RHAR FAQ
1.How can I place an order for TPS65020RHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65020RHAR 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 TPS65020RHAR reliable?
The price and inventory of TPS65020RHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65020RHAR is usually 5 days.
3.What payment methods are accepted for TPS65020RHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65020RHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65020RHAR?
TPS65020RHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65020RHAR 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 TPS65020RHAR?
For technical support, including TPS65020RHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65020RHAR requirements.
6.How does Aetrix verify that TPS65020RHAR is sourced from the original manufacturer or authorized distributors?
All TPS65020RHAR 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 TPS65020RHAR meets industry standards.
7.What is the process for return or replacement of TPS65020RHAR?
All TPS65020RHAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65020RHAR, 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 TPS65020RHAR part is unused and in its original packaging.
Return procedure for TPS65020RHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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