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Texas Instruments LP8725TLX/NOPB
- Part No.:
- LP8725TLX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 30-WFBGA, DSBGA
- Datasheet:
-
LP8725TLX/NOPB.pdf
- Description:
- IC REG CTRLR/CONV 9OUT 30DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LP8725TLX/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 in multimedia processor subsystems.
For engineers reviewing the LP8725TLX/NOPB datasheet, LP8725TLX/NOPB pinout, LP8725TLX/NOPB application, or LP8725TLX/NOPB equivalent, key selection considerations include its 30-bump DSBGA package (0.5 mm pitch), ±2% output voltage accuracy across all regulators, 10 μVrms analog LDO noise, thermal shutdown protection, and dual-mode configuration (SUB_PMU or stand-alone PMU) determined by the CONFIG pin.
Technical Context
The LP8725TLX/NOPB implements a dual-buck architecture with 4-MHz switching frequency enabling use of compact 1-µH inductors, and supports Dynamic Voltage Scaling (DVS) on BUCK1 via dedicated DVS pin or serial interface. Its I²C-compatible control interface (7-bit slave address 0x78/0x7A/0x79/0x7B depending on CONFIG/DEFSEL) enables real-time register reconfiguration of voltages, enable sequences, and fault response.
Startup sequencing is fully programmable and defaults to either of two factory-defined sequences based on DEFSEL pin state (VIN1 or GND), with timing steps typically 64 µs. The device operates in five distinct modes - STANDBY, STARTUP, IDLE, SHUTDOWN, and SLEEP - with RESET_N assertion timed at 30 ms post-EN (SUB_PMU) or 60 ms post-PWR_ON (PMU).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DC-DC Buck Output Current | 600 mA per buck (configurable up to 800 mA); supports high-efficiency power delivery to processor cores with DVS capability. |
| Analog LDO Noise | 10 μVrms; enables clean power for sensitive analog circuits like ADCs, audio codecs, or RF front-ends. |
| Output Voltage Accuracy | ±2% typical across all LDOs and bucks; ensures reliable logic-level compliance and system stability under load/temperature variation. |
| Digital LDO Dropout | 190 mV typical at 300 mA; maintains regulation under tight input-to-output differentials common in battery-powered systems. |
| Package | 30-bump DSBGA, 0.5 mm pitch; ultra-compact footprint optimized for space-constrained portable handheld PCB layouts. |
| I²C Interface | Standard-mode compatible (up to 400 kHz); allows host processor to configure voltages, sequencing, and monitor status registers. |
| Thermal Protection | Integrated thermal shutdown at TSD +160°C; prevents damage during overload or poor heatsinking conditions. |
Pinout & Package
LP8725TLX/NOPB uses a 30-bump DSBGA package (0.5 mm pitch) with bottom-side ball layout. Pin functions are defined per TI SNVS618G datasheet Rev. May 2013.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CONFIG (E2) | Configuration mode selector | Hard-wired to GND for SUB_PMU mode (e.g., camera module); to VIN1 for full PMU mode (processor power). |
| EN/PWR_ON (E3) | Enable / Power-on trigger | In SUB_PMU: rising edge initiates startup; in PMU: debounced high signal starts sequence after ~30 ms. |
| RESET_N (C3) | Open-drain reset output | Asserted low during UVLO, thermal shutdown, or shutdown sequence; requires external 10-kΩ pull-up. |
| SCL / SDA (D4 / C4) | I²C clock/data | Supports bidirectional register access; both require external 1.5-kΩ pull-up resistors. |
| LDO1–LDO5 (F1, E1, C1, A1, B1) | Regulated outputs | Five independent LDOs: LDO1–LDO3 digital (300 mA), LDO4–LDO5 analog (300 mA), each with 1.2–3.3 V range. |
| LILO1 / LILO2 (F3 / A3) | Low-input/low-output regulators | 300-mA LILO outputs support 0.8–3.3 V; ideal for powering low-voltage I/O rails or memory interfaces. |
| VINB1 / VINB2 (D5 / C5) | Buck input supplies | Separate inputs for each buck converter; decoupling required with 4.7-µF ceramic capacitors. |
| FB1 / FB2 (E4 / B4) | Feedback nodes | Resistive divider inputs for precise output voltage setting; active pull-down when respective buck is disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable dual-mode operation | SUB_PMU (module-level power) or full PMU (processor-level power) selected by CONFIG pin wiring - no firmware change needed. |
| Programmable power-on sequencing | Two default startup/shutdown sequences (based on DEFSEL), plus full register-level customization via I²C for complex SoC requirements. |
| Dual-set BUCK voltage control | BUCK1 supports two programmable voltage sets (e.g., 1.0 V / 1.2 V) switched dynamically via DVS pin or register bit - essential for DVFS in multimedia processors. |
| Low-noise analog regulation | 10 μVrms output noise on analog LDOs (LDO4/LDO5) meets stringent PSRR and jitter requirements for audio/RF subsystems. |
| Thermal and fault monitoring | Integrated thermal shutdown and fault detection (e.g., short-circuit on BUCK1/LDO1 triggers RESET_N assertion). |
Applications
| Mobile Multimedia Subsystem | Handheld Processor Core Supply |
|---|---|
|
Use Scenario: Powers camera, display, or audio codec modules in smartphones or tablets where space and noise are critical. IC Role / Device Role / Timing Role: Acts as SUB_PMU delivering tightly regulated, low-noise power to analog and digital blocks with synchronized startup. Use Value: Eliminates need for discrete LDOs and bucks; reduces BOM count and PCB area while maintaining <10 μVrms noise on analog rails. |
Use Scenario: Supplies core, I/O, and memory rails for application processors (e.g., ARM-based SoCs) in portable devices. IC Role / Device Role / Timing Role: Functions as primary PMU with configurable DVS and multi-rail sequencing to match processor power states. Use Value: Enables dynamic core voltage scaling between 1.0 V and 1.2 V (BUCK1) to reduce active power consumption by >25%. |
| Portable Navigation Device | Wearable Health Monitor |
|
Use Scenario: Powers GPS baseband, RF transceiver, and touchscreen controller in battery-operated navigation units. IC Role / Device Role / Timing Role: Provides isolated, low-dropout LDOs (190 mV @ 300 mA) for I/O rails operating near battery minimum voltage. Use Value: Maintains regulation down to 2.7 V input, extending usable battery life by enabling operation until battery reaches 2.8 V. |
Use Scenario: Delivers ultra-low-noise power to precision analog front-ends (ECG, SpO₂ sensors) and low-power microcontrollers. IC Role / Device Role / Timing Role: Supplies analog LDOs (LDO4/LDO5) with 10 μVrms noise and digital LDOs (LDO1–LDO3) for MCU peripherals. Use Value: Reduces sensor measurement noise floor by >15 dB compared to standard switching regulators, improving signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8725-A | Default startup disables BUCK1 and LDO3 unless enabled via pin or register; different default voltage sets (e.g., BUCK1 = 1.1 V / 1.0 V). | Targeted for systems requiring tighter default rail control - e.g., where BUCK1 must remain off until firmware initialization. | Select LP8725-A only if default OFF-state behavior for specific rails aligns with system boot requirements. |
| LP8725-C | Fixed default sequence enables all LDOs and LILOs; no LDO2/LDO4/LDO5 disable options in default setup; identical 30-bump DSBGA package. | Suited for simpler designs needing full rail activation without runtime reconfiguration - e.g., fixed-function embedded controllers. | Choose LP8725-C when consistent, non-programmable power-up behavior is preferred over flexible sequencing. |
Compared with LP8725TLX/NOPB, LP8725-A offers stricter default rail disablement for safer boot, while LP8725-C provides deterministic full-rail activation - neither supports the same degree of runtime DVS or sequence customization as the base LP8725TLX/NOPB.
Availability
LP8725TLX/NOPB is available at Aetrix Electronics and suitable for mobile multimedia subsystems, handheld processor core supply, portable navigation devices, and wearable health monitors requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for LP8725TLX/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 specializing in analog, embedded processing, and power management technologies with decades of automotive, industrial, and consumer design expertise.
The LP8725TLX/NOPB belongs to TI's Power Management Unit portfolio, designed specifically for efficient, integrated power delivery to multimedia processors and subsystems in space- and noise-constrained portable electronics.
FAQ
What is the package type and pin count of the LP8725TLX/NOPB?
The LP8725TLX/NOPB uses a 30-bump DSBGA (Die Size Ball Grid Array) package with 0.5 mm ball pitch. It is not a leaded IC but a bottom-terminal chip-scale package requiring microvia PCB design and controlled-depth soldering. This package enables minimal footprint for high-density portable applications.
Does the LP8725TLX/NOPB support dynamic voltage scaling (DVS)?
Yes, the LP8725TLX/NOPB supports DVS on BUCK1 via both hardware (DVS pin, C2) and software (I²C register bit REG 0x00<2>). When DVS=1, BUCK1 outputs the first voltage set (e.g., 1.0 V); when DVS=0, it outputs the second (e.g., 1.2 V). BUCK2 voltage sets are also programmable but lack a dedicated pin control.
How does the CONFIG pin determine LP8725TLX/NOPB operation mode?
The CONFIG pin (E2) selects between SUB_PMU and PMU modes: tied to GND configures LP8725TLX/NOPB as a subsystem PMU (using EN/PWR_ON and B2_EN pins), while tied to VIN1 configures it as a full processor PMU (using PWR_ON and PS_HOLD). Mode selection is latched at power-on and affects pin functionality and reset timing.
What are the default output voltages for LP8725TLX/NOPB when DEFSEL = VIN1?
With DEFSEL = VIN1, LP8725TLX/NOPB defaults to Setup 1: BUCK1 = 1.0 V / 1.2 V (DVS-selectable), BUCK2 = 1.8 V, LDO1 = 2.8 V, LDO2 = 1.8 V, LDO3 = 3.3 V, LDO4 = 3.3 V, LDO5 = 2.8 V, LILO1 = 1.2 V, LILO2 = 1.2 V - all enabled at startup unless overridden by register or pin control.
Is thermal shutdown protection integrated into the LP8725TLX/NOPB?
Yes, the LP8725TLX/NOPB includes internal thermal shutdown that activates at approximately TSD +160°C. Upon triggering, the device immediately shuts down all outputs and asserts RESET_N. Recovery requires removal of the thermal fault and a subsequent power cycle or enable signal - no automatic restart is performed.
LP8725TLX/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/NOPB FAQ
1.How can I place an order for LP8725TLX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8725TLX/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/NOPB reliable?
The price and inventory of LP8725TLX/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/NOPB is usually 5 days.
3.What payment methods are accepted for LP8725TLX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8725TLX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8725TLX/NOPB?
LP8725TLX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8725TLX/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/NOPB?
For technical support, including LP8725TLX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8725TLX/NOPB requirements.
6.How does Aetrix verify that LP8725TLX/NOPB is sourced from the original manufacturer or authorized distributors?
All LP8725TLX/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/NOPB meets industry standards.
7.What is the process for return or replacement of LP8725TLX/NOPB?
All LP8725TLX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP8725TLX/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/NOPB part is unused and in its original packaging.
Return procedure for LP8725TLX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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