LP3907

現行

LP3907 雙 1A 和 600mA 降壓轉換器和具有 I2C 介面的雙 300mA LDO

產品詳細資料

Regulated outputs (#) 4 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.8 Vout (max) (V) 3.5 Iout (max) (A) 1 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO adjustable Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.04 Rating Catalog Switching frequency (max) (kHz) 2100 Operating temperature range (°C) -40 to 85 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 3 Switching frequency (typ) (kHz) 2100 Product type Processor and FPGA
Regulated outputs (#) 4 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.8 Vout (max) (V) 3.5 Iout (max) (A) 1 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO adjustable Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.04 Rating Catalog Switching frequency (max) (kHz) 2100 Operating temperature range (°C) -40 to 85 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 3 Switching frequency (typ) (kHz) 2100 Product type Processor and FPGA
DSBGA (YZR) 25 7.5625 mm² 2.75 x 2.75 WQFN (RTW) 24 16 mm² 4 x 4
  • 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 3.5 V
      (except JJ11, FX6W, and JX6X options)
    • 300-mA Output Current
    • 30-mV (typical) Dropout
    • Create a Custom Design Using the LP3907 With the WEBENCH® Power Designer
  • 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 3.5 V
      (except JJ11, FX6W, and JX6X options)
    • 300-mA Output Current
    • 30-mV (typical) Dropout
    • Create a Custom Design Using the LP3907 With the WEBENCH® Power Designer

The LP3907 device is a 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-DC converters with dynamic voltage scaling (DVS), two 300-mA linear regulators, and a 400-kHz I2C interface to allow a host controller access to the internal control registers of the device. The LP3907 additionally features programmable power-on sequencing.

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

The LP3907 device is a 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-DC converters with dynamic voltage scaling (DVS), two 300-mA linear regulators, and a 400-kHz I2C interface to allow a host controller access to the internal control registers of the device. The LP3907 additionally features programmable power-on sequencing.

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

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類型 標題 日期
* Data sheet LP3907 Dual 1-A and 600-mA Buck Converters and Dual 300-mA LDOs With I2C Interface datasheet (Rev. U) PDF | HTML 2018年 1月 10日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
EVM User's guide Using the LP3907TLEVM Evaluation Module 2016年 1月 22日
Application note Enhancing Bit-Flip Recovery and PMU Design For Defense/Industrial Applications 2014年 8月 14日
Application note Parasitics can Hinder Switcher Regulator and LDO Designs (Rev. A) 2014年 7月 1日
User guide Evaluation Kit for LP3907 Programmable Pwr Management Unit w/ I2C Compatible I/F (Rev. A) 2013年 4月 30日
Application note Saving Energy via Smart Power Management (Power Designer-118) 2012年 2月 17日

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開發模組 (EVM) 的 GUI

SNVC197 LP3907 EVM GUI

支援產品和硬體

支援產品和硬體

產品
多通道 IC (PMIC)
LP3907 LP3907 雙 1A 和 600mA 降壓轉換器和具有 I2C 介面的雙 300mA LDO
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZR) 25 Ultra Librarian
WQFN (RTW) 24 Ultra Librarian

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