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Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C-Compatible Interface

Qty Price
1-9 $2.70
10-24 $2.43
25-99 $2.26
100-249 $1.98
250-499 $1.86
500-749 $1.58
750-999 $1.33
1000+ $1.27


  • Qualified for Automotive Applications
  • AEC Q100-Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature
  • Input Voltage Range: 2.8 V to 5.5 V
  • Compatible with Advanced Applications Processors and FPGAs
  • 2 LDOs for Powering Internal Processor Functions and I/Os
  • High-Speed Serial Interface for Independent Control of Device Functions and Settings
  • Precision Internal Reference
  • Thermal Overload Protection
  • Current Overload Protection
  • Software Programmable Regulators
  • External Power-On-Reset Function for Buck1 and Buck2 (Power Good with Delay Function)
  • Undervoltage Lockout Detector to Monitor Input Supply Voltage
  • Step-Down DC-DC Converters (Buck)
    • Programmable VOUT from:
      • Buck1 : 0.8 V–2 V at 1 A
      • Buck2 : 1 V–3.5 V at 600 mA
    • Up to 96% Efficiency
    • 2.1-MHz PWM Switching Frequency
    • PWM-to-PFM Automatic Mode Change
      Under Low Loads
    • ±3% Output Voltage Accuracy
    • Automatic Soft Start
  • Linear Regulators (LDO)
    • Programmable VOUT of 1 V to 3.5V
    • 300-mA Output Current
    • 30-mV (typical) Dropout

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Texas Instruments  LP3907QSQ-JXI7/NOPB

The LP3907-Q1 device isa multi-function, programmable power management unit (PMU) optimized for low-power FPGAs,microprocessors, and DSPs. This device integrates two highly efficient 1-A, 600-mA step-down DC-DCconverters with dynamic voltage scaling (DVS), two 300-mA linear regulators, and a 400-kHzI2C interface to allow a host controller access to the internal controlregisters of the device. The LP3907-Q1 additionally features programmable power-on sequencing.This device is an Automotive-Grade Product that is AECQ-100 Grade 1Qualified.

Features include programmable power-on sequencing, communication control (I2C), dynamicvoltage scaling, overcurrent protection, Power Good, synchronous rectification, thermal shutdown,and undervoltage lockout. For applications requiring light loads, the high-efficiency synchronousswitching buck regulators enter PFM mode and operate with reduced switching frequency and supplycurrent to maintain high efficiency at very light loads.