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Texas Instruments TPS65020RHATG4
- Part No.:
- TPS65020RHATG4
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS65020RHATG4.pdf
- Description:
- IC BATT PWR MGMT LI-ION 40VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS65020RHATG4 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 a 20-mA RTC LDO with backup switching. It supports dynamic voltage scaling via I²C interface and provides push-button wake-up/reset functionality. Used in Intel PXA270- and OMAP-based handhelds requiring multi-rail, low-quiescent-power power sequencing.
For engineers reviewing the TPS65020RHATG4 datasheet, TPS65020RHATG4 pinout, TPS65020RHATG4 application, or TPS65020RHATG4 equivalent, key selection criteria include its triple-buck architecture with independent enable pins, I²C programmability for core voltage scaling, thermal shutdown at 160°C, 85-μA quiescent current in PFM mode, and VQFN-40 package compatibility with space-constrained portable designs.
Technical Context
The TPS65020RHATG4 integrates three independent buck converters sharing a common 1.3–1.7 MHz oscillator but operating with separate enable controls (DCDC1_EN/DCDC2_EN/DCDC3_EN) and default-voltage configuration pins (DEFDCDC1/2/3). Each converter supports fixed or resistor-divider-adjustable output voltages and enters low-power PFM mode at light load to maintain high efficiency across wide load ranges.
Its dual 200-mA LDOs (VLDO1/VLDO2) accept 1.5–6.5 V input and are enabled jointly via LDO_EN; the RTC rail (VRTC) switches automatically between VSYSIN and VBACKUP with 12.5-Ω rDS(on) MOSFETs and ±1% output accuracy. The I²C interface (up to 400 kHz) enables real-time register access for voltage control, interrupt masking, and LDO enable/disable-critical for dynamic power management in processor-based systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCDC1 Output Current | 1.2 A maximum - supports system voltage rail (e.g., 3.3 V IO domain) with 97% peak efficiency. |
| DCDC3 Output Current | 800 mA maximum - supplies processor core (e.g., 1.3 V or 1.55 V) with dynamic voltage scaling via I²C. |
| LDO1/LDO2 Output | 200 mA each, 1–3.3 V adjustable - powers SDRAM and PLL in Intel PXA270 platforms with ±2% load regulation. |
| I²C Interface Speed | Up to 400 kHz - enables fast register writes for real-time core voltage adjustment during CPU frequency transitions. |
| Quiescent Current (PFM) | 85 μA typical - extends battery life in standby by minimizing idle power draw across all enabled rails. |
| Thermal Shutdown | 160°C activation with 20°C hysteresis - protects silicon integrity during sustained high-load or poor PCB thermal design. |
| Package | VQFN-40 (6.0 mm × 6.0 mm) with PowerPAD™ - enables high thermal dissipation (RθJB = 6.6°C/W) in compact handheld layouts. |
Pinout & Package
VQFN-40 (RHA) package with exposed thermal pad (PowerPAD™) soldered to PCB ground plane for optimal thermal performance. Pin count: 40. Body size: 6.00 mm × 6.00 mm. Pitch: 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DCDC1_EN (25) | Digital enable input | Active-high control for first buck converter; allows independent power sequencing of system voltage rail. |
| VDCDC1 (9) | Feedback sense input | Connects directly to DCDC1 output for precision regulation; internal 0.6-V reference enables wide output range (0.6–VINDCDC1). |
| L1 (7) | Switch node | High-side P-channel + low-side N-channel MOSFET switch point; requires external 2.2–3.3 μH inductor and 10–22 μF output capacitor. |
| VLDO1 (20) / VLDO2 (18) | LDO outputs | 200-mA regulated outputs for SDRAM/PLL; share VINLDO input and LDO_EN control; require ≥2.2 μF ceramic output capacitors. |
| SCLK (30) / SDAT (29) | I²C interface | Standard-mode/fast-mode compatible bus (≤400 kHz); SDAT is open-drain bidirectional; supports dynamic core voltage programming. |
| RESPWRON (27) | Open-drain reset output | Asserts low for 100 ms (with 1 nF on TRESPWRON) to generate system reset pulse; synchronized to VRTC thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Triple synchronous buck architecture | Three independent 1.3–1.7 MHz converters with dedicated enable pins and default-voltage select pins - enables flexible, staggered power-up sequencing for SoC domains. |
| I²C programmable core voltage | Real-time adjustment of DCDC3 output (e.g., 1.3 V ↔ 1.55 V) without hardware change - supports DVFS in ARM/Intel processors like PXA270 and OMAP1710. |
| RTC backup switching | Automatic switchover between VSYSIN and VBACKUP (2.73–3.75 V range) with 12.5-Ω rDS(on) and 20-mA output - maintains real-time clock during main power loss. |
| Push-button debounced I/O | PB_IN/PB_OUT pair with internal deglitch (30 ms typ.) and latch - implements reliable wake-up/reset in battery-powered devices without external RC networks. |
| Low-noise PFM mode | 85-μA quiescent current with minimal output ripple at light load - extends standby time while maintaining stable regulation for always-on peripherals. |
Applications
| Smartphone Power Sequencing | OMAP-Based PDA Platform |
|---|---|
|
Use Scenario: Single-cell Li-Po powered smartphone requiring independent power rails for application processor core, memory, and peripherals. IC Role / Device Role / Timing Role: PMIC providing sequenced 1.3-V core (DCDC3), 1.8-V memory (DCDC2), 3.3-V IO (DCDC1), plus VLDO1/VLDO2 for SDRAM/PLL and VRTC for RTC backup. Use Value: Enables dynamic voltage scaling of DCDC3 via I²C during CPU load changes, reducing active power by up to 30% versus fixed-voltage solutions. |
Use Scenario: OMAP1710-based PDA needing tightly regulated, low-noise supplies for DSP, SRAM, and real-time clock under varying battery voltage (3.0–4.2 V). IC Role / Device Role / Timing Role: Central power hub managing buck converters, LDOs, and battery backup switching with precise reset timing (100-ms RESPWRON pulse). Use Value: Integrated push-button debouncing and HOT_RESET input eliminate external components, reducing BOM count by 3–5 discrete parts per design. |
| Intel PXA270 Handheld System | Digital Still Camera Power Management |
|
Use Scenario: Intel PXA270 evaluation platform requiring compliant power rails: 1.3/1.55-V core, 1.8/2.5-V memory, 3.0/3.3-V IO, and 3.0-V RTC. IC Role / Device Role / Timing Role: Reference PMIC specified in Intel PXA270 design guides; uses DEFDCDCx pins for factory-set defaults and I²C for runtime tuning. Use Value: Dual 200-mA LDOs (VLDO1/VLDO2) meet PXA270 SDRAM/PLL supply requirements with <10-μs regulation time during burst loads. |
Use Scenario: Compact digital still camera with flash LED, image sensor, and SD card interface-all powered from one Li-ion cell. IC Role / Device Role / Timing Role: Supplies 3.3-V IO (DCDC1), 2.5-V sensor bias (DCDC2), 1.55-V processor core (DCDC3), and 3.0-V RTC (VRTC) with automatic backup switchover. Use Value: 90% efficient DCDC3 converter minimizes heat generation near optical module, avoiding thermal drift in image sensor calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RHAT | Same pinout, adds fourth buck converter (DCDC4) and removes PB_IN/PB_OUT; higher quiescent current (110 μA vs. 85 μA). | Targets systems needing >3 regulated rails (e.g., dual-core SoCs); not drop-in for TPS65020RHATG4 due to missing push-button logic. | Select TPS65023RHAT only if fourth rail is required and push-button functionality is unnecessary. |
| TPS65021RHAT | Identical buck/LDO specs and pinout; replaces I²C interface with hardware-only voltage selection (no register access or DVFS). | Suitable for cost-sensitive, static-voltage designs (e.g., basic feature phones); lacks dynamic core voltage scaling capability. | Choose TPS65021RHAT when I²C control is unused and BOM cost reduction is prioritized over software-configurable power states. |
Compared with TPS65020RHATG4, TPS65023RHAT adds flexibility for future rail expansion but sacrifices push-button integration, while TPS65021RHAT reduces complexity and cost at the expense of runtime voltage adaptability-making TPS65020RHATG4 the optimal choice for I²C-enabled, dynamically managed handheld platforms.
Availability
TPS65020RHATG4 is available at Aetrix Electronics and suitable for smartphone power sequencing, OMAP-based PDA platforms, Intel PXA270 handheld systems, and digital still camera power management requiring stable component supply and long-term industrial availability.
Supply support for TPS65020RHATG4 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 system solutions.
The TPS6502x family was designed specifically for Li-Ion/Li-Polymer powered portable electronics-including PDAs, smartphones, and digital media players-delivering high-efficiency multi-rail power with minimal external components and intelligent system-level control.
FAQ
What is the maximum output current supported by the TPS65020RHATG4's DCDC3 converter?
The TPS65020RHATG4's DCDC3 converter delivers up to 800 mA continuous output current, optimized for processor core voltage rails (e.g., 1.3 V or 1.55 V). This rating assumes proper thermal design with the VQFN-40 PowerPAD™ soldered to a 4-layer PCB with ≥2 in² copper pour. Derating applies above 60°C ambient temperature per the device's thermal characteristics.
Does the TPS65020RHATG4 support dynamic voltage scaling for the processor core?
Yes, the TPS65020RHATG4 supports dynamic voltage scaling for the processor core via its I²C-compatible serial interface. The DCDC3 output voltage can be adjusted in real time using register writes-enabling transitions between default values (e.g., 1.3 V ↔ 1.55 V) or custom resistor-divider configurations-without requiring hardware modification or power cycle.
How does the TPS65020RHATG4 handle battery backup for the real-time clock?
The TPS65020RHATG4 automatically switches the VRTC output between VSYSIN and VBACKUP inputs using internal MOSFETs with 12.5-Ω rDS(on). When VSYSIN falls below 2.55 V (–3% threshold), it seamlessly transfers to VBACKUP (2.73–3.75 V range) to sustain the 20-mA RTC LDO. The VRTC output maintains ±1% accuracy and supports 30-mA peak current when RESPWRON is asserted.
What is the purpose of the DEFDCDC1, DEFDCDC2, and DEFDCDC3 pins on the TPS65020RHATG4?
The DEFDCDC1/2/3 pins on the TPS65020RHATG4 set default output voltages for each buck converter during startup: DEFDCDC1 selects 3.0 V or 3.3 V for DCDC1; DEFDCDC2 selects 1.8 V or 2.5 V for DCDC2; DEFDCDC3 selects 1.3 V or 1.55 V for DCDC3. These pins accept logic-level inputs or resistor dividers, enabling factory-programmed defaults before I²C initialization.
Can the TPS65020RHATG4 be used without an I²C controller in the system?
Yes, the TPS65020RHATG4 operates fully without I²C: all three buck converters and both LDOs function using their respective enable pins (DCDCx_EN, LDO_EN) and DEFDCDCx defaults. I²C is optional and only required for dynamic voltage scaling, interrupt masking, or runtime LDO reconfiguration-making the TPS65020RHATG4 suitable for simple, cost-optimized designs.
TPS65020RHATG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
TPS65020RHATG4 FAQ
1.How can I place an order for TPS65020RHATG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65020RHATG4 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 TPS65020RHATG4 reliable?
The price and inventory of TPS65020RHATG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65020RHATG4 is usually 5 days.
3.What payment methods are accepted for TPS65020RHATG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65020RHATG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65020RHATG4?
TPS65020RHATG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65020RHATG4 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 TPS65020RHATG4?
For technical support, including TPS65020RHATG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65020RHATG4 requirements.
6.How does Aetrix verify that TPS65020RHATG4 is sourced from the original manufacturer or authorized distributors?
All TPS65020RHATG4 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 TPS65020RHATG4 meets industry standards.
7.What is the process for return or replacement of TPS65020RHATG4?
All TPS65020RHATG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65020RHATG4, 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 TPS65020RHATG4 part is unused and in its original packaging.
Return procedure for TPS65020RHATG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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