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Texas Instruments LP8725TLX-B/NOPB
- Part No.:
- LP8725TLX-B/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 30-WFBGA, DSBGA
- Datasheet:
-
LP8725TLX-B/NOPB.pdf
- Description:
- IC REG CTRLR/CONV 9OUT 30DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LP8725TLX-B/NOPB from Texas Instruments is a programmable power management unit (PMU) integrating two 600-mA step-down DC-DC converters (configurable up to 800 mA), three digital LDOs (300 mA each), two low-noise analog 300-mA LDOs, and two low-input/low-output (LILO) regulators - all controlled via I²C interface for dynamic voltage scaling and configurable startup sequencing. It serves as either a standalone PMU for multimedia processors or a sub-PMU for camera modules in portable handheld devices.
For engineers reviewing the LP8725TLX-B/NOPB datasheet, LP8725TLX-B/NOPB pinout, LP8725TLX-B/NOPB application, or LP8725TLX-B/NOPB equivalent, key selection considerations include its 30-bump DSBGA package (0.5 mm pitch), ±2% output voltage accuracy across buck and LDO rails, 10 μVrms analog LDO noise, thermal shutdown protection, and dual configuration modes (SUB_PMU or PMU) determined by the CONFIG pin.
Technical Context
The LP8725TLX-B/NOPB implements a multi-rail, register-programmable power architecture with independent enable/control of each regulator via I²C. Its operation supports two distinct system roles: as a SUB_PMU (CONFIG=GND) with EN/PWR_ON control and B2_EN-driven BUCK2 enable, or as a full PMU (CONFIG=VIN1) using PS_HOLD and PWR_ON for host-coordinated sequencing.
Startup and shutdown sequences are fully programmable in time-step increments (typically 64 µs/step), with default sequences varying by DEFSEL configuration (VIN1 or GND). Dynamic Voltage Scaling (DVS) is supported on BUCK1 via dedicated DVS pin and register control, enabling real-time voltage adjustment without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DC-DC Buck Output Current | 600 mA per channel (configurable up to 800 mA); enables compact high-efficiency core rail generation with small 1-µH inductors. |
| Digital LDO Output Current | 300 mA per LDO (LDO1–LDO5); supplies digital subsystems including processor I/O, memory interfaces, and logic blocks. |
| Analog LDO Noise | 10 μVrms; ensures clean biasing for sensitive analog circuits like ADCs, audio codecs, and RF front-ends. |
| Output Voltage Accuracy | ±2% typical for all buck and LDO outputs; guarantees stable voltage margins under load and temperature variation. |
| Package | 30-bump DSBGA, 0.5 mm pitch; ultra-compact footprint optimized for space-constrained portable designs. |
| I²C Interface | Standard-mode compatible (100 kHz); allows host processor to configure voltages, sequencing, DVS, and fault response in real time. |
| Thermal Protection | Integrated thermal shutdown at TSD +160°C; prevents damage during overload or poor PCB thermal design. |
Pinout & Package
LP8725TLX-B/NOPB uses a 30-bump DSBGA package (0.5 mm pitch) with bottom-side solder balls. Pin functions are defined per TI SNVS618G datasheet Rev. May 2013.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/PWR_ON | Power enable input | In SUB_PMU mode: rising edge initiates startup; in PMU mode: debounced high triggers full power-on sequence. |
| CONFIG | Configuration mode select | Hardwired to GND → SUB_PMU; to VIN1 → PMU; determines pin function mapping (e.g., B2_EN vs PS_HOLD). |
| DEFSEL | Default setup selector | GND or VIN1 sets startup sequence order and default output voltages per Table 3 in datasheet. |
| DVS | Dynamic voltage scaling control | Direct hardware control of BUCK1 voltage setpoint between two preconfigured values (BUCK1_V1/BUCK1_V2). |
| LDO3_EN | External LDO3 enable | Logical OR with register bit; allows hardware override of LDO3 state independent of I²C commands. |
| RESET_N | System reset output | Open-drain active-low signal asserted during UVLO, thermal shutdown, or output fault (if unmasked). |
| FB1 / FB2 | Buck feedback inputs | Resistive divider inputs for precise output voltage regulation; active pull-down when respective buck is disabled. |
| VINB1 / VINB2 | Buck input supplies | Accept 2.7–5.5 V input; separate inputs allow independent sourcing (e.g., battery vs boosted rail). |
| VIN1 / VIN2 / VIN3 | LDO input supplies | Dedicated inputs per LDO group support optimal source selection (e.g., filtered buck output vs battery). |
| VINLILO1 / VINLILO2 | LILO input supplies | Enable LILO regulators to operate from very low input voltages (down to 0.8 V), supporting ultra-low-drop applications. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Power-On Sequencing | Programmable time-step startup/shutdown order (64 µs/step) avoids bus contention and ensures proper SoC initialization. |
| Dual-Mode Operation (SUB_PMU/PMU) | Single IC adapts to module-level (camera) or system-level (processor) power management via CONFIG pin wiring. |
| Hardware DVS Support | External DVS pin enables immediate BUCK1 voltage switching without I²C transaction latency - critical for performance scaling. |
| Low-Noise Analog Regulation | 10 μVrms output noise on analog LDOs meets stringent requirements for high-resolution data converters and RF synthesizers. |
| Fault Detection & Reset Assertion | Monitors BUCK1/BUCK2/LDO1 for short-circuit faults; asserts RESET_N to halt system if unmasked - improves system reliability. |
Applications
| Mobile Multimedia Processor Power | Camera Module Sub-PMU |
|---|---|
Use Scenario: Powers application processor SoC (e.g., OMAP, i.MX) requiring multiple independent rails with tight sequencing and DVS capability. IC Role / Device Role / Timing Role: Standalone PMU managing core, I/O, memory, and analog rails; controls power-up/down timing via CONFIG=VIN1 and PWR_ON/PS_HOLD. Use Value: Eliminates need for discrete regulators and sequencer ICs; reduces BOM count and layout area while enabling runtime voltage optimization. | Use Scenario: Supplies image sensor, ISP, and interface logic in smartphone camera modules with strict size and noise constraints. IC Role / Device Role / Timing Role: Sub-PMU configured via CONFIG=GND; delivers regulated LDO and LILO outputs synchronized to host EN signal. Use Value: Enables compact, low-noise, single-chip power solution meeting EMI and jitter requirements for high-speed MIPI CSI-2 links. |
| Portable Handheld Audio System | Industrial Portable Data Terminal |
Use Scenario: Powers audio codec, DAC, amplifier, and microcontroller in Bluetooth speaker or voice assistant device. IC Role / Device Role / Timing Role: Provides ultra-low-noise analog LDOs (10 μVrms) for audio path and digitally programmable rails for logic; sequenced via I²C. Use Value: Prevents audible noise coupling into analog audio stages while supporting flexible firmware-controlled power states. | Use Scenario: Delivers robust, field-deployable power to barcode scanner, RFID reader, and display in rugged handheld terminals. IC Role / Device Role / Timing Role: Operates as PMU with thermal shutdown and UVLO protection; supports wide input range (2.7–5.5 V) from Li-ion or USB sources. Use Value: Ensures reliable operation across temperature extremes and battery discharge cycles without external supervision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8725TLX-C/NOPB | Default startup enables all LDOs and LILOs (Table 6); fixed 1.2 V/1.8 V BUCK defaults; no LDO2/LDO4/LDO5 disable-by-default behavior. | Suitable for systems requiring full rail availability at power-on without I²C reconfiguration. | Select LP8725TLX-C/NOPB when consistent default rail activation across all outputs is required and minimal post-boot configuration is preferred. |
| LP8725TLX-D/NOPB | Higher default BUCK1/BUCK2 (1.3 V/1.8 V); enables LILO1/LILO2 by default; disables LDO1/LDO2/LDO4/LDO5 unless explicitly enabled. | Optimized for systems where LILO regulators supply ultra-low-voltage logic and BUCKs drive higher-current cores. | Select LP8725TLX-D/NOPB when LILO outputs are primary rails and selective LDO activation is acceptable for power gating. |
Compared with LP8725TLX-B/NOPB, LP8725TLX-C/NOPB provides broader default rail coverage for simpler boot flows, while LP8725TLX-D/NOPB prioritizes LILO and BUCK performance at the expense of default digital LDO activation - both require identical PCB layout but differ in factory-programmed defaults and startup behavior.
Availability
LP8725TLX-B/NOPB is available at Aetrix Electronics and suitable for mobile multimedia processors, camera modules, portable audio systems, and industrial handheld terminals requiring stable component supply and long-term production continuity.
Supply support for LP8725TLX-B/NOPB 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 delivering analog, embedded processing, and connectivity solutions with emphasis on power efficiency, reliability, and system integration.
The LP8725 product line was designed specifically for power management in portable multimedia and imaging subsystems, balancing high integration, low noise, and flexible configuration for application processors and peripheral modules.
FAQ
What configuration mode does LP8725TLX-B/NOPB support?
LP8725TLX-B/NOPB supports two hardware-configurable modes: SUB_PMU (CONFIG pin tied to GND) for module-level power, and PMU (CONFIG tied to VIN1) for system-level processor power. Mode selection determines pin functionality (e.g., B2_EN vs PS_HOLD) and default sequencing behavior - no firmware change is needed.
How does the DVS feature work on LP8725TLX-B/NOPB?
The DVS pin on LP8725TLX-B/NOPB directly controls BUCK1's output voltage between two preprogrammed values (BUCK1_V1 and BUCK1_V2). When DVS=1, BUCK1_V1 is active; when DVS=0, BUCK1_V2 is active. This hardware-based switching occurs without I²C latency, enabling rapid voltage scaling during processor performance transitions.
What is the default startup sequence for LP8725TLX-B/NOPB?
Per Table 2 in the datasheet, LP8725TLX-B/NOPB defaults to BUCK1 → BUCK2 → LDO1 → LILO2 startup order (reverse shutdown) when CONFIG is set and DEFSEL is connected to VIN1 or GND. The exact sequence is fixed in silicon and requires no register writes - it executes automatically upon EN or PWR_ON assertion.
Does LP8725TLX-B/NOPB include thermal protection?
Yes, LP8725TLX-B/NOPB integrates thermal shutdown protection that triggers at TSD +160°C. When activated, the device immediately disables all outputs and asserts RESET_N. Recovery requires removal of thermal stress and a valid power-on reset event - ensuring robust operation in thermally constrained portable enclosures.
Can LP8725TLX-B/NOPB be used with a 1.8-V input supply?
Yes, LP8725TLX-B/NOPB accepts input voltages from 2.7 V to 5.5 V on its buck inputs (VINB1/VINB2) and LDO inputs (VIN1/VIN2/VIN3/VINLILO1/VINLILO2). A 1.8-V supply is insufficient for direct connection but can feed LILO regulators (which accept down to 0.8 V) or be boosted first - verify minimum input specs per rail in the datasheet.
LP8725TLX-B/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 30-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller/Converter, Multimedia Processors
- Voltage - Input:
- 2.6V ~ 4.5V
- Number of Outputs:
- 9
- Voltage - Output:
- 0.8V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-DSBGA
LP8725TLX-B/NOPB FAQ
1.How can I place an order for LP8725TLX-B/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8725TLX-B/NOPB 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 LP8725TLX-B/NOPB reliable?
The price and inventory of LP8725TLX-B/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8725TLX-B/NOPB is usually 5 days.
3.What payment methods are accepted for LP8725TLX-B/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8725TLX-B/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8725TLX-B/NOPB?
LP8725TLX-B/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8725TLX-B/NOPB 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 LP8725TLX-B/NOPB?
For technical support, including LP8725TLX-B/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8725TLX-B/NOPB requirements.
6.How does Aetrix verify that LP8725TLX-B/NOPB is sourced from the original manufacturer or authorized distributors?
All LP8725TLX-B/NOPB 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 LP8725TLX-B/NOPB meets industry standards.
7.What is the process for return or replacement of LP8725TLX-B/NOPB?
All LP8725TLX-B/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP8725TLX-B/NOPB, 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 LP8725TLX-B/NOPB part is unused and in its original packaging.
Return procedure for LP8725TLX-B/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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