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Texas Instruments LP3907QSQ-JXI7/NOPB
- Part No.:
- LP3907QSQ-JXI7/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LP3907QSQ-JXI7/NOPB.pdf
- Description:
- LP3907-Q1 - DUAL HIGH-CURRENT ST
- Quantity:
- Payment:
- Shipping:
Inventory:61,000
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Product details
Overview
LP3907QSQ-JXI7/NOPB from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified power management IC (PMIC) integrating two synchronous buck converters (1 A and 600 mA), two 300-mA LDOs, and a 400-kHz I²C interface. It delivers programmable output voltages (Buck1: 1.2 V, Buck2: 3.3 V, LDO1: 1.8 V, LDO2: 2.5 V), supports forced PWM mode, and features thermal/overcurrent protection for FPGA, DSP, and application processor core/I/O power in automotive infotainment and ADAS systems.
For engineers reviewing the LP3907QSQ-JXI7/NOPB datasheet, LP3907QSQ-JXI7/NOPB pinout, LP3907QSQ-JXI7/NOPB application, or LP3907QSQ-JXI7/NOPB equivalent, key selection criteria include its dual-buck + dual-LDO architecture, I²C-programmable sequencing, 2.1-MHz switching frequency, ±3% output accuracy, and automotive-grade reliability across –40°C to +125°C ambient operation.
Technical Context
The LP3907QSQ-JXI7/NOPB implements two independent synchronous buck regulators with integrated high-side/low-side MOSFETs (RDSON_P = 200 mΩ, RDSON_N = 180 mΩ), supporting forced PWM operation and automatic PWM-to-PFM transition under light load. Its dual 300-mA PMOS LDOs feature 30-mV typical dropout and 45-dB PSRR at 10 kHz.
Control is fully managed via a 400-kHz I²C interface with default address 0x60 (WQFN package), enabling dynamic voltage scaling, enable/disable sequencing, and real-time status monitoring including nPOR assertion with configurable delay. The device integrates precision internal reference, undervoltage lockout (2.7–2.9 V), and thermal shutdown (160°C typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 5.5 V - supports direct connection to automotive battery (cold-crank tolerant down to 2.8 V) |
| Buck1 Output | 1.2 V @ 1 A - factory-programmed for FPGA core rail with ±3% accuracy and 2.1-MHz fixed-frequency PWM |
| Buck2 Output | 3.3 V @ 600 mA - factory-programmed for I/O or peripheral rail; enables PFM mode below ~50 mA load |
| LDO1/LDO2 Output | 1.8 V / 2.5 V @ 300 mA each - low-noise (80 µVrms), low-dropout (30 mV typ) supplies for analog or sensitive logic |
| I²C Interface | 400-kHz standard-mode - allows host MCU to configure registers, monitor status (nPOR, UVLO), and control sequencing |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design |
| Ambient Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and cockpit automotive applications |
Pinout & Package
LP3907QSQ-JXI7/NOPB is packaged in a 4.00 mm × 4.00 mm WQFN-24 (RTW) with exposed thermal pad (DAP). This RoHS-compliant, lead-free package provides low thermal resistance (RθJA = 32.7°C/W) and supports automated optical inspection and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINLDO12 | Analog power supply | Provides bias for internal reference, I²C, and logic; must be decoupled with 1 µF ceramic capacitor |
| EN_T | Power-on sequence enable | Logic input controlling preset startup timing; tied HIGH to activate factory-configured sequencing |
| nPOR | Open-drain power-good output | Signals valid regulation of Buck1/Buck2; pulled LOW if either output 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 careful layout to minimize EMI |
| FB1 / FB2 | Feedback inputs | Resistive divider inputs setting regulated output voltage; high-impedance (10 MΩ typical) for minimal loading |
| ENSW1 / ENSW2 | Buck enable inputs | Independent digital controls for Buck1/Buck2; logic HIGH enables corresponding regulator |
| ENLDO1 / ENLDO2 | LDO enable inputs | Separate digital controls for LDO1/LDO2; allow selective powering of subsystems to reduce quiescent current |
| SDA / SCL | I²C bidirectional data/clock | Interface for full register access; requires 4.7-kΩ pull-up resistors to AVDD (3.3 V typical) |
| GND_SW1 / GND_SW2 | Power ground returns | Must be connected to dedicated low-impedance ground plane; separate from analog/core ground (GND_C, GND_L) |
| DAP | Thermal pad | Internally connected to GND; soldering improves thermal dissipation but is not electrically required |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified (–40°C to +125°C ambient), with HBM ±2000 V ESD rating for harsh vehicle environments |
| Dynamic voltage scaling | I²C-controlled output voltage adjustment enables adaptive power management for processors with variable performance states |
| Flexible power-on reset | nPOR with programmable delay ensures reliable system boot by asserting reset until both bucks stabilize within tolerance |
| Low-quiescent-current PFM mode | 33 µA operating IQ in PFM extends battery life in always-on automotive modules without sacrificing regulation stability |
| Integrated protection | Comprehensive safeguards include overcurrent limiting (1.5 A peak for Buck1), thermal shutdown, and undervoltage lockout |
Applications
| Automotive Infotainment Head Unit | FPGA-Based ADAS Camera Module |
|---|---|
Use Scenario: Central display unit requiring multiple isolated, sequenced rails for SoC core, GPU, memory, and touch controller. IC Role / Device Role / Timing Role: Primary PMIC managing 1.2-V core, 3.3-V I/O, 1.8-V DDR, and 2.5-V interface rails with synchronized startup and fault reporting via I²C. Use Value: Reduces BOM count by consolidating four regulators into one AEC-Q100-compliant IC while enabling software-defined power policies. | Use Scenario: Compact rear-view camera ECU powered from 12-V battery with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Single-chip power solution delivering clean, low-noise 1.2-V FPGA core and 3.3-V image sensor I/O with <300-µs startup time. Use Value: Eliminates discrete LDO filtering stages; 45-dB PSRR and 80-µVrms noise ensure minimal clock jitter in high-speed MIPI CSI-2 links. |
| Automotive Body Control Module (BCM) | Industrial Telematics Gateway |
Use Scenario: Low-power gateway managing CAN, LIN, and microcontroller peripherals in door modules or lighting controllers. IC Role / Device Role / Timing Role: Dual-buck + dual-LDO PMIC supplying 3.3-V MCU, 2.5-V transceiver, and 1.8-V sensor interface with programmable enable sequencing. Use Value: Enables deep-sleep modes with 0.03-µA LDO shutdown current and supports cold-crank operation down to 2.8 V input. | Use Scenario: Cellular-connected vehicle tracking unit requiring robust power delivery across wide temperature and input voltage ranges. IC Role / Device Role / Timing Role: Automotive-grade PMIC providing stable 1.2-V and 3.3-V rails for LTE modem and ARM Cortex-A processor under vibration and thermal stress. Use Value: RθJA = 32.7°C/W and 125°C max junction temperature ensure reliable operation in sealed enclosures without active cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RSBR | Triple 1.5-A buck + dual LDO; no I²C, only hardware-programmed outputs; lower efficiency at light load | Fixed-output, non-communicating PMIC for cost-sensitive body electronics without dynamic scaling needs | Choose when I²C control is unnecessary and fixed 1.2/1.8/3.3-V rails suffice |
| MAX20029ATPA/V+T | Dual 2.5-A buck + triple LDO; SPI interface; higher current capability; AEC-Q100 Grade 0 (–40°C to +150°C) | Higher-power ADAS domain controller requiring >1-A core rails and extended temperature range | Choose when >1-A buck current or >125°C ambient operation is mandatory |
Compared with TPS65023RSBR and MAX20029ATPA/V+T, LP3907QSQ-JXI7/NOPB offers optimal balance of I²C programmability, automotive qualification, and compact 4×4-mm footprint-making it ideal for space-constrained FPGA/DSP systems where software-defined power sequencing is essential.
Availability
LP3907QSQ-JXI7/NOPB is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LP3907QSQ-JXI7/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 and embedded processing technologies, with decades of automotive power management expertise.
The LP3907-Q1 product line was designed specifically for low-power FPGAs, microprocessors, and DSPs in automotive environments-emphasizing AEC-Q100 qualification, I²C configurability, and integrated protection for safety-critical systems.
FAQ
What is the default I²C address for LP3907QSQ-JXI7/NOPB?
The LP3907QSQ-JXI7/NOPB uses a default I²C address of 0x60 (hexadecimal), corresponding to its WQFN-24 (RTW) package. This address is hardwired and cannot be changed via pins or registers. Communication occurs at 400-kHz standard-mode speed, and the SDA/SCL lines require external 4.7-kΩ pull-up resistors to AVDD. The LP3907QSQ-JXI7/NOPB does not support address selection via ADDR pins.
Does LP3907QSQ-JXI7/NOPB support dynamic voltage scaling (DVS)?
Yes, LP3907QSQ-JXI7/NOPB supports dynamic voltage scaling via its I²C interface. Users can write to voltage control registers to adjust Buck1 and Buck2 output levels in real time-enabling adaptive power management for processors with variable performance states. DVS is implemented without requiring external components, and all voltage transitions maintain regulation stability and soft-start behavior.
What is the purpose of the EN_T pin on LP3907QSQ-JXI7/NOPB?
The EN_T pin on LP3907QSQ-JXI7/NOPB enables or disables the factory-programmed power-on sequencing function. When pulled HIGH, it activates the preset startup order (e.g., Buck1 → Buck2 → LDO1 → LDO2) with configurable delays. When held LOW or floating, sequencing is bypassed and all regulators respond independently to their respective EN pins. EN_T has no effect on regulation once enabled.
How does the nPOR pin function on LP3907QSQ-JXI7/NOPB?
The nPOR pin on LP3907QSQ-JXI7/NOPB is an open-drain output that signals valid regulation of Buck1 and Buck2. It remains LOW until both outputs reach ≥94% of their target voltage and stays LOW if either drops below 85% of target. An internal 100-kΩ pull-up resistor is provided, and the pin asserts reset to downstream logic. Its behavior is unaffected by LDO status or I²C commands.
What are the recommended input and output capacitors for LP3907QSQ-JXI7/NOPB's buck converters?
For LP3907QSQ-JXI7/NOPB buck converters, TI specifies 10-µF low-ESR ceramic input capacitors (X5R/X7R) placed near VIN1/VIN2 pins, and 10-µF ceramic output capacitors (X5R/X7R) with ≤500-mΩ ESR at FB1/FB2 nodes. Inductors must be 2.2-µH shielded ceramic types. These values ensure stability, transient response, and EMI compliance per the datasheet's layout guidelines and thermal derating curves.
LP3907QSQ-JXI7/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 3.3V, 600mA
- Voltage/Current - Output 3:
- 1.8V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 2.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
LP3907QSQ-JXI7/NOPB FAQ
1.How can I place an order for LP3907QSQ-JXI7/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3907QSQ-JXI7/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 LP3907QSQ-JXI7/NOPB reliable?
The price and inventory of LP3907QSQ-JXI7/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3907QSQ-JXI7/NOPB is usually 5 days.
3.What payment methods are accepted for LP3907QSQ-JXI7/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3907QSQ-JXI7/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3907QSQ-JXI7/NOPB?
LP3907QSQ-JXI7/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3907QSQ-JXI7/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 LP3907QSQ-JXI7/NOPB?
For technical support, including LP3907QSQ-JXI7/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3907QSQ-JXI7/NOPB requirements.
6.How does Aetrix verify that LP3907QSQ-JXI7/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3907QSQ-JXI7/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 LP3907QSQ-JXI7/NOPB meets industry standards.
7.What is the process for return or replacement of LP3907QSQ-JXI7/NOPB?
All LP3907QSQ-JXI7/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3907QSQ-JXI7/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 LP3907QSQ-JXI7/NOPB part is unused and in its original packaging.
Return procedure for LP3907QSQ-JXI7/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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