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Texas Instruments TPS65910AA1RSLR
- Part No.:
- TPS65910AA1RSLR
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TPS65910AA1RSLR.pdf
- Description:
- IC PWR MGMT 4DCDC/8 LDO 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,329
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Product details
Overview
TPS65910AA1RSLR from Texas Instruments is an integrated power-management unit (PMU) designed for OMAP- and AM335x-based embedded systems, featuring three step-down DC-DC converters (VDD1, VDD2, VIO), one step-up 5-V DC-DC converter (VDD3), eight LDOs, SmartReflex™ Class 3 interface, RTC with 32.768-kHz crystal support, and embedded power controller for sequenced startup-used in industrial handhelds and AM335x-based single-board computers.
For engineers reviewing the TPS65910AA1RSLR datasheet, TPS65910AA1RSLR pinout, TPS65910AA1RSLR application, or TPS65910AA1RSLR equivalent, key selection considerations include its 48-QFN package, dual-core SmartReflex voltage control, 3.6-V max input on VDDIO, thermal shutdown protection, and compatibility with AM335x processors requiring DDR2 memory support.
Technical Context
The TPS65910AA1RSLR implements a dedicated embedded power controller (EPC) to manage complex power sequencing for OMAP/AM335x SoCs, including controlled ramp-up of VDD1/VDD2 cores before I/O and memory rails. Its dual SmartReflex Class 3 interfaces enable dynamic voltage scaling via SR-I2C, while the RTC subsystem integrates oscillator, calendar, alarm, and backup battery management with VRTC LDO.
DC-DC regulation uses synchronous buck topology for VDD1, VDD2, and VIO (all with internal FETs), and boost topology for VDD3; all switching regulators support external synchronization at 3 MHz. LDOs-including VAUX1/VAUX2 (300 mA each), VDAC/VPLL (for video/PLL supplies), and VRTC (backup-capable)-are fully I²C-controllable with programmable enable and voltage settings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Package | 48-pin QFN (6.0 mm × 6.0 mm), RSL variant with exposed thermal pad |
| VDD1/VDD2 SMPS Input Range | 2.7 V to 5.5 V - supports Li-ion, Ni-MH, or 5-V input directly |
| VIO SMPS Output | Configurable 0.8–1.5 V - powers I/O and memory interfaces with ±2% accuracy |
| VDD3 Boost Output | 5.0 V ±3% - delivers up to 200 mA for USB PHY or camera modules |
| VAUX2 LDO Current | 300 mA max - sufficient for auxiliary system rails like display bias or sensor power |
| I²C Interface Speed | High-speed mode (3.4 Mbps) - enables fast register access for dynamic voltage scaling |
| RTC Accuracy | ±20 ppm crystal tolerance + temperature coefficient ≤ ±0.5 ppm/°C - ensures reliable timekeeping over industrial temp range |
Pinout & Package
TPS65910AA1RSLR is housed in a 48-pin QFN (RSL) package with 0.4-mm pitch and exposed thermal pad (PowerPad). Pin functions are validated per TI SWCS046U datasheet Section 4.1 and Figure 4-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply rail | Provides 1.65–3.45 V logic interface voltage for I²C and GPIOs |
| SDA_SDI / SCL_SCK | General-purpose I²C bus | High-speed (3.4 Mbps) bidirectional control interface for configuration and monitoring |
| SDASR_EN2 / SCLSR_EN1 | SmartReflex Class 3 interface | Dedicated I²C channel for real-time core voltage control and feedback from processor |
| SLEEP | Active-low sleep state control | Asserting low initiates device sleep mode; default pull-down enables immediate entry |
| VDD1 / VDD2 / VIO | DC-DC output rails | Three independent regulated outputs: dual-core (VDD1/VDD2) and I/O/memory (VIO) |
| VDD3 | Boost converter output | 5-V output for peripherals requiring higher voltage than battery input provides |
| VRTC | Real-time clock LDO output | 1.8-V regulated supply with backup capability; maintains RTC during main power loss |
| BOOT0 / BOOT1 | Power-up sequence selection | Two-pin strap determines boot configuration for AM335x DDR2 compatibility |
Key Features
| Feature | Design Value |
|---|---|
| Embedded Power Controller (EPC) | Hardware-managed power-on/off sequencing eliminates need for external firmware coordination in AM335x systems |
| SmartReflex™ Class 3 Support | Enables closed-loop dynamic voltage scaling for VDD1/VDD2 cores using processor-reported activity states |
| Integrated RTC with Calendar | Full BCD-coded date/time/alarm registers plus 32.768-kHz oscillator - no external RTC IC required |
| Backup Battery Management | VBACKUP input accepts supercapacitor or coin cell; VRTC LDO sustains RTC during main power failure |
| Configurable GPIO/CKSYNC | Multi-function pin usable as general-purpose I/O or external 3-MHz sync clock input for DC-DC switching |
Applications
| Industrial Handheld Terminals | AM335x-Based Single-Board Computers |
|---|---|
Use Scenario: Ruggedized barcode scanners and portable HMI devices operating from single-cell Li-ion batteries with extended runtime requirements. IC Role / Device Role / Timing Role: Central PMU managing all voltage rails, enabling SmartReflex-driven core DVFS and RTC-backed event logging. Use Value: Reduces BOM count by integrating 3 SMPS, 8 LDOs, RTC, and EPC - eliminating discrete power sequencing logic and external RTC. | Use Scenario: Compact embedded controllers running Linux on AM335x SoC with DDR2 memory, Ethernet, and USB peripherals. IC Role / Device Role / Timing Role: Primary power hub delivering sequenced VDD1/VDD2 cores, VIO for DDR2 interface, VDD3 for USB PHY, and VRTC for system timekeeping. Use Value: BOOT0/BOOT1 strapping ensures correct power-up order for AM335x DDR2 initialization; VIO SMPS supports DDR2 VDDQ at 1.8 V with tight regulation. |
| Portable Medical Monitoring Devices | Automated Test Equipment Interfaces |
Use Scenario: Battery-powered ECG or glucose meters requiring precise analog supply stability and long-term timestamping. IC Role / Device Role / Timing Role: Supplies clean, low-noise LDO outputs (VDAC, VPLL, VAUX1) to analog front-end and ADC/DAC blocks; RTC maintains clinical event timestamps. Use Value: Dedicated VDAC/VPLL LDOs provide <10 µV RMS noise - critical for high-resolution medical signal acquisition. | Use Scenario: Modular instrumentation systems where field-replaceable modules require deterministic power sequencing and calibration retention. IC Role / Device Role / Timing Role: Powers FPGA I/O banks (via VIO), analog signal chains (via VAUX2/VDIG1), and retains RTC time across hot-swap events using VBACKUP. Use Value: VBACKUP input supports 5–2000 mF supercapacitors - enabling >10-minute RTC holdover during module replacement without time reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65910A1RSL | Same architecture but supports broader OMAP processor family (AM17xx, AM18xx, DM3730); lacks AM335x-specific boot strapping | Targeted at legacy OMAP3/DM37xx designs, not optimized for AM335x DDR2 timing | Select only if migrating from OMAP-based platforms; not drop-in for AM335x due to missing BOOT strap mapping |
| TPS65217CRSLR | Successor PMU with enhanced efficiency, lower quiescent current, and integrated fuel gauge; uses different I²C register map and pinout | Designed for newer AM335x/AM437x systems with deeper sleep modes and battery telemetry needs | Requires PCB redesign and firmware update; preferred for new designs needing longer battery life and state-of-charge monitoring |
Compared with TPS65910A1RSL, TPS65910AA1RSLR adds AM335x DDR2 boot configuration and tighter VIO regulation for DDR2 VDDQ compliance; versus TPS65217CRSLR, it lacks fuel gauge and has higher IQ but offers proven qualification for industrial AM335x deployments.
Availability
TPS65910AA1RSLR is available at Aetrix Electronics and suitable for industrial handheld terminals, AM335x-based single-board computers, and portable medical monitoring devices requiring stable component supply and long-term lifecycle support.
Supply support for TPS65910AA1RSLR 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 industrial, automotive, and communications markets.
The TPS65910 product line was engineered specifically for OMAP- and Sitara™-based application processors, delivering tightly integrated, sequenced, and SmartReflex-enabled power solutions for resource-constrained embedded systems.
FAQ
What is the primary processor compatibility of the TPS65910AA1RSLR?
The TPS65910AA1RSLR is explicitly qualified for TI's AM335x processor family with DDR2 memory interface, as confirmed in Table 3-1 of the SWCS046U datasheet. It uses BOOT0/BOOT1 strapping to configure power-up sequencing aligned with AM335x DDR2 initialization requirements - distinguishing it from generic TPS65910 variants.
Does the TPS65910AA1RSLR support external 3-MHz clock synchronization for its DC-DC converters?
Yes, the TPS65910AA1RSLR supports external clock synchronization via the GPIO_CKSYNC pin, which accepts a 3-MHz input to align switching of all DC-DC converters. This feature reduces EMI in noise-sensitive applications and is documented in Section 1.1 and Figure 1-1 of the SWCS046U datasheet.
What is the maximum output current capability of the VAUX2 LDO in the TPS65910AA1RSLR?
The VAUX2 LDO in the TPS65910AA1RSLR delivers up to 300 mA in active mode, as updated in revision SWCS046S (September 2013) - an increase from the earlier 150 mA rating. This supports higher-current auxiliary loads such as display backlight drivers or multi-sensor interfaces.
How does the TPS65910AA1RSLR handle RTC backup during main power loss?
The TPS65910AA1RSLR uses the VBACKUP pin to accept a supercapacitor or coin cell (5–2000 mF), feeding the VRTC LDO which maintains 1.8-V RTC operation independently. The VRTC LDO input voltage range extends to 5.5 V in backup mode (SWCS046R), ensuring robust timekeeping across wide backup source variations.
Is the TPS65910AA1RSLR pin-compatible with other TPS65910 family members like TPS65910A1RSL?
No - while the TPS65910AA1RSLR shares the same 48-QFN RSL package and pinout with other TPS65910x variants, its BOOT0/BOOT1 configuration and internal firmware are tailored for AM335x DDR2. TPS65910A1RSL targets OMAP3/DM37xx and requires different strapping; direct substitution may cause incorrect power sequencing.
TPS65910AA1RSLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Handheld/Mobile Devices, OMAP™
- Current - Supply:
- -
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (6x6)
TPS65910AA1RSLR FAQ
1.How can I place an order for TPS65910AA1RSLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65910AA1RSLR 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 TPS65910AA1RSLR reliable?
The price and inventory of TPS65910AA1RSLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65910AA1RSLR is usually 5 days.
3.What payment methods are accepted for TPS65910AA1RSLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65910AA1RSLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65910AA1RSLR?
TPS65910AA1RSLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65910AA1RSLR 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 TPS65910AA1RSLR?
For technical support, including TPS65910AA1RSLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65910AA1RSLR requirements.
6.How does Aetrix verify that TPS65910AA1RSLR is sourced from the original manufacturer or authorized distributors?
All TPS65910AA1RSLR 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 TPS65910AA1RSLR meets industry standards.
7.What is the process for return or replacement of TPS65910AA1RSLR?
All TPS65910AA1RSLR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65910AA1RSLR, 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 TPS65910AA1RSLR part is unused and in its original packaging.
Return procedure for TPS65910AA1RSLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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