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Texas Instruments LP3907TLX-JJCP/NOPB
- Part No.:
- LP3907TLX-JJCP/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 25-WFBGA
- Datasheet:
-
LP3907TLX-JJCP/NOPB.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 25USMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,278
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Product details
Overview
LP3907TLX-JJCP/NOPB from Texas Instruments is a programmable power management IC integrating two synchronous buck converters (1 A and 600 mA) and two 300-mA LDOs, all controlled via 400-kHz I²C interface. It operates from 2.8 V to 5.5 V input, delivers 1.2 V/1.8 V buck outputs and 1.2 V/2.5 V LDO outputs, and supports dynamic voltage scaling for FPGA/DSP core and I/O rail sequencing in portable embedded systems.
For engineers reviewing the LP3907TLX-JJCP/NOPB datasheet, LP3907TLX-JJCP/NOPB pinout, LP3907TLX-JJCP/NOPB application, or LP3907TLX-JJCP/NOPB equivalent, this device offers verified I²C-programmable regulation, ±3% output accuracy, 2.1-MHz PWM switching with automatic PFM mode transition, 30-mV typical LDO dropout, and integrated thermal/current protection - critical for battery-powered low-power processor power delivery.
Technical Context
The LP3907TLX-JJCP/NOPB implements dual independent buck regulators with synchronous rectification, programmable VOUT (Buck1: 0.8–2 V; Buck2: 1–3.5 V), and auto-mode PWM-to-PFM switching for light-load efficiency. Its LDOs use PMOS pass devices enabling operation down to 1.74 V input and delivering 1 V–3.5 V outputs with 30-mV typical dropout.
Control is fully managed through a 400-kHz I²C interface supporting register access for voltage setting, enable/disable, sequencing delay (EN_T = 010), and power-good monitoring. The device includes undervoltage lockout (2.7–2.9 V), thermal shutdown (160°C), and overcurrent protection on both bucks and LDOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 5.5 V - supports single-cell Li-ion, USB, or regulated 3.3 V/5 V rails without external pre-regulation. |
| Buck1 Output | 1.2 V @ 1 A - factory-configured for FPGA core voltage with ±3% accuracy and 2.1-MHz fixed-frequency PWM. |
| Buck2 Output | 1.8 V @ 600 mA - factory-configured for memory or peripheral I/O, with automatic PFM mode below ~10 mA load. |
| LDO1/LDO2 Outputs | 1.2 V / 2.5 V @ 300 mA each - low-noise (80 µVrms) linear regulators with 30-mV typical dropout for sensitive analog or logic supplies. |
| I²C Interface | 400-kHz standard-mode - enables host-processor runtime reconfiguration of all outputs, sequencing, and fault reporting without hardware changes. |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Package | 24-pin WQFN (4.0 mm × 4.0 mm) - exposes DAP for enhanced thermal dissipation in space-constrained portable designs. |
Pinout & Package
The LP3907TLX-JJCP/NOPB is housed in a thermally enhanced 24-pin WQFN package (RTW) with an exposed thermal pad (DAP). This package supports high-power-density layouts and requires soldering the DAP to a thermal plane for optimal junction-to-board thermal resistance (RθJB = 11.2°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VINLDO12 | Analog power supply | Provides 2.8–5.5 V bias for internal reference, I²C logic, and control circuitry - must be decoupled with 1 µF ceramic. |
| EN_T | Sequencing enable input | Logic-level input (010 default delay) that initiates power-on sequence for all regulators when asserted high. |
| nPOR | Open-drain power-good output | Signals valid regulation of Buck1/Buck2 outputs; pulled low if either falls outside 85–94% of target voltage. |
| SW1 / SW2 | Buck switch node outputs | Connect to external 2.2-µH inductors and 10-µF output capacitors; require low-ESR ceramic layout for stability and EMI control. |
| FB1 / FB2 | Feedback inputs | Resistive divider inputs for precise output voltage setting; high-impedance nodes sensitive to noise coupling. |
| LDO1 / LDO2 | Linear regulator outputs | Deliver low-noise, low-dropout power; each requires ≥0.47 µF output capacitor with ≤500 mΩ ESR for stability. |
| SDA / SCL | I²C bidirectional data/clock | Support 400-kHz communication; require 4.7-kΩ pull-up resistors to AVDD (not VIN) per TI layout guidelines. |
| DAP | Thermal pad | Internally connected to GND; must be soldered to PCB ground plane to achieve rated RθJB and prevent thermal throttling. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic voltage scaling (DVS) | Independent I²C control of Buck1/Buck2 output voltages enables real-time adaptation to processor performance states - reducing active power by up to 40% in burst-mode workloads. |
| Auto-mode PWM-to-PFM transition | Switches Buck1/Buck2 from fixed-frequency PWM to variable-frequency PFM below ~10 mA load - maintaining >85% efficiency at microamp quiescent currents. |
| Programmable power-on sequencing | EN_T pin triggers configurable startup order and inter-rail delays (default 010 = 50 ms), eliminating need for external sequencers in multi-rail FPGA systems. |
| Integrated precision reference | Internal 1.2-V bandgap reference with <±10 ppm/°C drift ensures ±3% output accuracy across –40°C to +125°C ambient without external calibration. |
| Low-noise LDO architecture | PMOS-based LDOs deliver 80 µVrms output noise (10 Hz–100 kHz) and 45 dB PSRR at 10 kHz - suitable for ADC references and RF bias rails. |
Applications
| FPGA Core & Memory Power | DSP Processor Supply |
|---|---|
|
Use Scenario: Powering Xilinx Spartan-7 or Intel MAX 10 FPGA core (1.2 V) and I/O banks (1.8 V, 2.5 V) from a single Li-ion cell. IC Role / Device Role / Timing Role: LP3907TLX-JJCP/NOPB acts as primary PMU - generating tightly regulated, sequenced rails with I²C-adjustable voltages during configuration and runtime DVFS. Use Value: Eliminates discrete DC-DC + LDO combinations, reduces BOM count by 6+ components, and enables firmware-controlled voltage margining for yield optimization. |
Use Scenario: Supplying TI C5000 DSP core (1.2 V), memory interface (1.8 V), and analog subsystem (2.5 V) in portable audio analyzers. IC Role / Device Role / Timing Role: LP3907TLX-JJCP/NOPB serves as system-level power controller - coordinating startup timing, monitoring rail health via nPOR, and reporting faults over I²C. Use Value: Achieves <100 µA total system standby current via PFM mode and LDO shutdown, extending battery life beyond 48 hours in measurement mode. |
| Portable Medical Instrumentation | Industrial Sensor Node |
|
Use Scenario: Powering ultra-low-power hearing aid SoCs requiring clean 1.2 V digital and 2.5 V analog supplies from coin-cell batteries. IC Role / Device Role / Timing Role: LP3907TLX-JJCP/NOPB functions as compact, low-noise power source - leveraging its 30-mV LDO dropout and 80 µVrms noise to preserve signal integrity. Use Value: Enables direct coin-cell operation (1.74 V min LDO input) without boost converter, reducing solution size by 35% and EMI emissions by >15 dB. |
Use Scenario: Regulating power for ARM Cortex-M4 MCU, LoRa transceiver, and MEMS sensor array in battery-backed industrial telemetry units. IC Role / Device Role / Timing Role: LP3907TLX-JJCP/NOPB provides fault-tolerant, software-configurable power - using I²C to adapt outputs to sensor excitation requirements and report UVLO events. Use Value: Supports seamless transition between main and backup battery sources via independent VIN1/VIN2 inputs, ensuring continuous operation during grid outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RSBR | Triple buck (2.5 A/1.8 A/1.8 A) + dual LDO (200 mA); no I²C, uses hardware pins for configuration. | Fixed-output, non-programmable sequencing - suitable for cost-sensitive, static-voltage applications only. | Select when I²C control is unnecessary and higher current per rail is required; avoid if DVFS or runtime reconfiguration is needed. |
| LP87332D0RGER | Dual buck (3 A/3 A) + dual LDO (300 mA); I²C interface with identical 400-kHz speed and register map compatibility. | Higher current capability and integrated watchdog timer - targets automotive infotainment rather than portable medical. | Choose for higher load demands or ASIL-B compliance needs; LP3907TLX-JJCP/NOPB remains preferred for sub-1-A, ultra-low-noise portable use cases. |
Compared with TPS65023RSBR and LP87332D0RGER, the LP3907TLX-JJCP/NOPB uniquely balances I²C programmability, ultra-low LDO noise, and 1-A buck capability in a 4-mm WQFN - making it optimal for space-constrained, battery-operated FPGA/DSP systems requiring firmware-controlled power tuning.
Availability
LP3907TLX-JJCP/NOPB is available at Aetrix Electronics and suitable for FPGA core power, portable medical instrumentation, and industrial sensor node designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LP3907TLX-JJCP/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 over 90 years of innovation in high-reliability electronic components.
The LP3907TLX-JJCP/NOPB belongs to TI's low-power PMU product line, engineered specifically for portable and battery-operated FPGA, DSP, and microprocessor systems demanding high integration, I²C configurability, and thermal robustness.
FAQ
What is the default I²C address for LP3907TLX-JJCP/NOPB?
The LP3907TLX-JJCP/NOPB uses a fixed 7-bit I²C address of 0x3C (60 decimal) in its 24-pin WQFN (RTW) package. This address is hardwired and cannot be changed via pins or registers. Communication requires standard-mode (100 kHz) or fast-mode (400 kHz) timing compliant with Section 7.10 of the datasheet, and pull-up resistors to AVDD (not VIN) are mandatory for reliable bus operation.
Does LP3907TLX-JJCP/NOPB support independent enable/disable of each regulator?
Yes, the LP3907TLX-JJCP/NOPB supports full independent control: ENLDO1/ENLDO2, ENSW1/ENSW2, and EN_T are dedicated digital inputs allowing hardware-level enable/disable of each LDO and buck regulator. Additionally, all regulators can be toggled via I²C register writes - enabling dynamic power gating in firmware without changing PCB connections.
What are the minimum external components required for LP3907TLX-JJCP/NOPB to operate?
Minimum external components for basic operation include: two 2.2-µH shielded inductors (for SW1/SW2), four 10-µF X5R/X7R ceramic capacitors (two input, two output), two 0.47-µF LDO output capacitors, one 1-µF VINLDO12 bypass capacitor, 4.7-kΩ SDA/SCL pull-ups to AVDD, and proper DAP grounding. No external feedback resistors are needed - outputs are factory-programmed to 1.2 V/1.8 V/1.2 V/2.5 V.
How does the nPOR pin function on LP3907TLX-JJCP/NOPB?
The nPOR pin on LP3907TLX-JJCP/NOPB is an open-drain output that signals valid regulation of Buck1 and Buck2. It is pulled low when either output falls below 85% of its target voltage (e.g., <1.02 V for 1.2 V Buck1) or rises above 94% during startup. A 100-kΩ internal pull-up ensures logic-high state when both rails are within tolerance, providing system-level power-good indication without external comparators.
Can LP3907TLX-JJCP/NOPB operate with input voltage below 2.8 V?
No - the absolute minimum input voltage for LP3907TLX-JJCP/NOPB is 2.8 V across all rails (VIN1, VIN2, VINLDO1, VINLDO2, VINLDO12). While LDO inputs tolerate as low as 1.74 V *if powered from another regulator*, the primary input domain requires ≥2.8 V to ensure proper buck converter operation, I²C logic functionality, and internal reference stability. Operation below 2.8 V violates recommended conditions and may cause undefined behavior or shutdown.
LP3907TLX-JJCP/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 25-WFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
- Number of Outputs:
- 4
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.2V, 1A
- Voltage/Current - Output 2:
- 1.8V, 600mA
- Voltage/Current - Output 3:
- 1.2V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 2.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 25-uSMD
LP3907TLX-JJCP/NOPB FAQ
1.How can I place an order for LP3907TLX-JJCP/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3907TLX-JJCP/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 LP3907TLX-JJCP/NOPB reliable?
The price and inventory of LP3907TLX-JJCP/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3907TLX-JJCP/NOPB is usually 5 days.
3.What payment methods are accepted for LP3907TLX-JJCP/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3907TLX-JJCP/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3907TLX-JJCP/NOPB?
LP3907TLX-JJCP/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3907TLX-JJCP/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 LP3907TLX-JJCP/NOPB?
For technical support, including LP3907TLX-JJCP/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3907TLX-JJCP/NOPB requirements.
6.How does Aetrix verify that LP3907TLX-JJCP/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3907TLX-JJCP/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 LP3907TLX-JJCP/NOPB meets industry standards.
7.What is the process for return or replacement of LP3907TLX-JJCP/NOPB?
All LP3907TLX-JJCP/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3907TLX-JJCP/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 LP3907TLX-JJCP/NOPB part is unused and in its original packaging.
Return procedure for LP3907TLX-JJCP/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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