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Texas Instruments TPS65023RSBT
- Part No.:
- TPS65023RSBT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
TPS65023RSBT.pdf
- Description:
- IC BAT PWR MGMT LI-ION 1C 40WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,535
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Product details
Overview
TPS65023RSBT from Texas Instruments is a highly integrated power management IC (PMIC) for single-cell Li-Ion/Li-Polymer systems, featuring three synchronous step-down DC/DC converters (1.7-A, 1.2-A, and 1.0-A), two 200-mA general-purpose LDOs, one 30-mA RTC LDO/switch, I²C interface, dynamic voltage scaling (DVS), and battery backup functionality. It delivers core, I/O, and memory rails for portable processors including DaVinci™ DSPs.
For engineers reviewing the TPS65023RSBT datasheet, TPS65023RSBT pinout, TPS65023RSBT application, or TPS65023RSBT equivalent, key selection criteria include its 40-pin WQFN package, I²C-compatible serial control (400 kHz), 85-μA quiescent current in low-power mode, thermal shutdown at 160°C, and support for preselectable LDO voltages via DEFLDO1/DEFLDO2 pins.
Technical Context
The TPS65023RSBT integrates three independent buck converters with separate enable pins (DCDC1_EN, DCDC2_EN, DCDC3_EN), each supporting adjustable output voltage via external feedback resistors and default settings controlled by DEFDCDC1–DEFDCDC3 pins. Its I²C interface enables real-time DVS of VDCDC1, interrupt masking, and LDO voltage configuration.
All three DC/DCs enter low-ripple PFM mode at light load to maximize efficiency across wide current ranges; the LDOs accept input from battery or DC/DC outputs (1.5 V to 6.5 V), with digitally selectable default outputs (four combinations via two pins). The device includes dedicated comparators for PWRFAIL and LOWBAT detection, plus programmable reset delay via capacitor on TRESPWRON.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DC/DC1 Output Current | 1.7 A - supports high-current processor core rail with minimal external components |
| DC/DC2 Efficiency | Up to 95% - minimizes heat generation and extends battery life in system voltage rail |
| LDO1/LDO2 Output Current | 200 mA each - powers peripherals or memory interfaces without external regulators |
| I²C Clock Frequency | Up to 400 kHz - enables fast register access for dynamic voltage scaling and status reads |
| Quiescent Current | 85 μA - ensures ultra-low standby power in always-on subsystems like RTC and backup domain |
| Operating Temperature | –40°C to +85°C - qualified for industrial and consumer portable applications |
| Package | 40-pin WQFN (5 mm × 5 mm) - compact footprint with exposed thermal pad for efficient heat dissipation |
Pinout & Package
The TPS65023RSBT is housed in a 40-pin, 5.00 mm × 5.00 mm WQFN package (RSB) with an exposed thermal pad connected to AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DCDC1_EN | Enable input | Active-high logic control for VDCDC1 converter; allows independent power sequencing |
| L1 | Switch node | Connects to inductor for VDCDC1 buck stage; requires low-inductance layout to minimize EMI |
| VDCDC1 | Feedback input | Direct connection to output for precise regulation; sets voltage via external resistor divider |
| DEFDCDC1 | Default voltage select | Digital input selecting 1.2 V or 1.6 V default VDCDC1 output; also supports resistor-divider programming |
| SCLK / SDAT | I²C interface | Standard-mode/fast-mode compatible bus (up to 400 kHz); enables DVS, interrupt control, and LDO configuration |
| RESPWRON | Reset output | Open-drain system reset signal; delay set externally via capacitor on TRESPWRON pin (e.g., 1 nF → 100 ms) |
| VRTC | RTC supply output | 30-mA LDO + switch providing regulated backup power for real-time clock during main power loss |
| AGND1 / AGND2 | Analog ground | Internally connected analog reference planes; must be tied to low-noise PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Scaling (DVS) | Real-time adjustment of VDCDC1 output voltage via I²C, enabling adaptive power management for CPU performance states |
| Preselectable LDO Voltages | Four default output combinations for VLDO1/VLDO2 using only two digital inputs (DEFLDO1/DEFLDO2), reducing BOM count |
| Battery Backup Support | Dedicated VBACKUP input and VRTC output with internal switch allow seamless RTC operation during main power failure |
| Programmable Reset Delay | External capacitor on TRESPWRON sets RESPWRON pulse width (e.g., 100 ms with 1 nF), eliminating need for external timer IC |
| Low-Ripple PFM Mode | Maintains low output ripple (< 10 mVpp typical) during light-load operation, critical for noise-sensitive analog circuits |
Applications
| Digital Media Players | Smart Phones |
|---|---|
|
Use Scenario: Portable audio/video playback with variable CPU load and multiple voltage domains. IC Role / Device Role / Timing Role: Central PMIC managing core (VDCDC1), I/O (VDCDC2), memory (VDCDC3), and peripheral (VLDO1/VLDO2) rails. Use Value: DVS reduces dynamic power during low-activity playback; 85-μA quiescent current extends standby time. |
Use Scenario: Multi-core application processor with burst-mode workloads and always-on connectivity. IC Role / Device Role / Timing Role: Power sequencer and regulator for SoC core, DDR memory, display interface, and baseband subsystems. Use Value: Independent DCDCx enables staggered startup; I²C allows runtime voltage optimization per workload profile. |
| Digital Still Cameras | DaVinci™ DSP Solutions |
|
Use Scenario: High-current image sensor and ISP processing requiring clean, stable power during capture bursts. IC Role / Device Role / Timing Role: Primary power source delivering regulated rails to sensor, ISP, and memory with low-noise PFM mode. Use Value: Low-ripple PFM maintains analog signal integrity; thermal shutdown prevents overheating during extended video recording. |
Use Scenario: TI DaVinci-based embedded vision or video analytics platforms with strict thermal and efficiency requirements. IC Role / Device Role / Timing Role: Reference PMIC specified in TI's DaVinci power design guides for TMS320DM64x and similar processors. Use Value: Prequalified compatibility eliminates validation effort; DEFDCDCx pins simplify board-level voltage configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBT | Improved I²C timing (100 ns setup/hold vs. 300 ns); identical pinout, package, and functional spec | Required for new designs targeting faster I²C master controllers or tighter timing margins | Select TPS65023BRSBT when interfacing with high-speed microcontrollers or where I²C timing margin is constrained |
| TPS65070RSLR | Higher integration: adds USB OTG power switch, higher LDO current (300 mA), but no RTC backup function | Better suited for USB-hosted portable devices needing OTG support; lacks VRTC/VBACKUP capability | Choose TPS65070RSLR if USB power switching is required and RTC backup is not needed; verify LDO voltage flexibility matches design |
Compared with TPS65023RSBT, the TPS65023BRSBT offers tighter I²C timing for robust communication with modern masters, while the TPS65070RSLR trades RTC backup for USB OTG functionality and higher LDO current-neither is pin-compatible without layout revision, and both require revalidation of power sequencing and register configuration.
Availability
TPS65023RSBT is available at Aetrix Electronics and suitable for digital media players, smart phones, digital still cameras, and DaVinci™ DSP-based embedded systems requiring stable component supply, long-term lifecycle support, and consistent electrical performance across production batches.
Supply support for TPS65023RSBT 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 experience in portable and battery-powered system solutions.
The TPS65023x product line was designed specifically for single-cell Li-Ion/Li-Polymer powered portable electronics requiring multi-rail power conversion, dynamic voltage scaling, and integrated backup functionality - targeting digital media, imaging, and DSP-based platforms.
FAQ
What is the primary function of the TPS65023RSBT in a portable system?
The TPS65023RSBT serves as a complete power management IC for single-cell Li-Ion/Li-Polymer systems, integrating three high-efficiency DC/DC converters (for core, system, and memory rails), two 200-mA LDOs, a 30-mA RTC LDO/switch, I²C interface, and battery backup circuitry. It enables compact, low-power, and thermally efficient power architecture in devices such as digital media players and smart phones.
Does the TPS65023RSBT support dynamic voltage scaling (DVS)?
Yes, the TPS65023RSBT supports dynamic voltage scaling exclusively for the VDCDC1 (core) rail via its I²C interface. This allows real-time adjustment of the core voltage based on processor workload, optimizing power consumption without hardware changes. DVS is not supported for VDCDC2 or VDCDC3, which are fixed or resistor-programmed.
How is the reset delay time configured on the TPS65023RSBT?
The reset delay time for the RESPWRON output is set by connecting an external capacitor between the TRESPWRON pin and AGND. For example, a 1-nF capacitor yields a nominal 100-ms delay. The internal charge/discharge current (1.7–2.3 μA) and comparator thresholds (0.25 V lower, 1.0 V upper) define the timing accuracy, eliminating need for discrete RC timers.
Can the TPS65023RSBT operate with input voltages below 3.0 V?
Yes, the TPS65023RSBT supports input voltages from 2.5 V to 6 V on VCC and the DC/DC input pins (VINDCDC1–3), making it suitable for deeply discharged Li-Ion cells (down to ~2.7 V) and systems with regulated intermediate rails. However, output current capability decreases linearly below 3.0 V input due to reduced headroom.
What are the default output voltages for the LDOs on the TPS65023RSBT?
The default output voltages for VLDO1 and VLDO2 are determined by the logic states of DEFLDO1 and DEFLDO2 pins, offering four combinations: 1.8 V/1.8 V, 2.8 V/2.8 V, 2.8 V/3.3 V, or 3.3 V/3.3 V. These defaults can be overridden via I²C commands after power-up, allowing flexible post-manufacturing configuration without hardware changes.
TPS65023RSBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Power Management
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- Over Temperature
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-WQFN (5x5)
TPS65023RSBT FAQ
1.How can I place an order for TPS65023RSBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65023RSBT 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 TPS65023RSBT reliable?
The price and inventory of TPS65023RSBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65023RSBT is usually 5 days.
3.What payment methods are accepted for TPS65023RSBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65023RSBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65023RSBT?
TPS65023RSBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65023RSBT 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 TPS65023RSBT?
For technical support, including TPS65023RSBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65023RSBT requirements.
6.How does Aetrix verify that TPS65023RSBT is sourced from the original manufacturer or authorized distributors?
All TPS65023RSBT 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 TPS65023RSBT meets industry standards.
7.What is the process for return or replacement of TPS65023RSBT?
All TPS65023RSBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65023RSBT, 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 TPS65023RSBT part is unused and in its original packaging.
Return procedure for TPS65023RSBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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