LP3907

AKTIV

LP3907 – Zweifach-Abwärtswandler (Buck), 1 A und 600 mA, und Zweifach-LDOs, 300 mA, mit I2C-Schnitts

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Datenblatt

document-pdfAcrobat LP3907 Dual 1-A and 600-mA Buck Converters and Dual 300-mA LDOs With I2C Interface datasheet (Rev. U) (Englisch) PDF | HTML

LP3907

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Processor supplier

Generic

Processor name

Generic

Product type

Processor and FPGA

Regulated outputs (#)

4

Step-down DC/DC converter

2

Step-up DC/DC converter

0

LDO

2

Vin (min) (V)

2.8

Vin (max) (V)

5.5

Vout (min) (V)

0.8

Vout (max) (V)

3.5

Iout (max) (A)

1

Configurability

Factory programmable, Software configurable

Features

Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO adjustable

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Step-down DC/DC controller

0

Step-up DC/DC controller

0

Iq (typ) (mA)

0.04

Switching frequency (max) (kHz)

2100

Shutdown current (ISD) (typ) (µA)

3

Switching frequency (typ) (kHz)

2100

Processor supplier

Generic

Processor name

Generic

Product type

Processor and FPGA

Regulated outputs (#)

4

Step-down DC/DC converter

2

Step-up DC/DC converter

0

LDO

2

Vin (min) (V)

2.8

Vin (max) (V)

5.5

Vout (min) (V)

0.8

Vout (max) (V)

3.5

Iout (max) (A)

1

Configurability

Factory programmable, Software configurable

Features

Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Power good, Synchronous rectification, Thermal shutdown, UVLO adjustable

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Step-down DC/DC controller

0

Step-up DC/DC controller

0

Iq (typ) (mA)

0.04

Switching frequency (max) (kHz)

2100

Shutdown current (ISD) (typ) (µA)

3

Switching frequency (typ) (kHz)

2100

WQFN (RTW)

24

16 mm² (4 mm × 4 mm)

DSBGA (YZR)

25

7.5625 mm² (— mm × — mm)

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 V_OUT 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 V_OUT 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 V_OUT 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 V_OUT 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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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	LP3907 Dual 1-A and 600-mA Buck Converters and Dual 300-mA LDOs With I2C Interface datasheet (Rev. U)	PDF \| HTML	10.01.2018
	Auswahlhilfe	Power Management Guide 2018 (Rev. R)		25.06.2018
	Anwendungshinweis	Enhancing Bit-Flip Recovery and PMU Design For Defense/Industrial Applications		14.08.2014
	Anwendungshinweis	Parasitics can Hinder Switcher Regulator and LDO Designs (Rev. A)		01.07.2014
	Benutzerhandbuch	Evaluation Kit for LP3907 Programmable Pwr Management Unit w/ I2C Compatible I/F (Rev. A)		30.04.2013
	Anwendungshinweis	Saving Energy via Smart Power Management (Power Designer-118)		17.02.2012

Design und Entwicklung

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GUI für Evaluierungsmodul (EVM)

SNVC197 — LP3907 EVM GUI

Unterstützte Produkte und Hardware

Download-Optionen

Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTW)	24	Ultra Librarian
DSBGA (YZR)	25	Ultra Librarian

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LP3907

LP3907 – Zweifach-Abwärtswandler (Buck), 1 A und 600 mA, und Zweifach-LDOs, 300 mA, mit I2C-Schnitts

LP3907

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