LP3906 datasheet(1/38 Pages) NSC

部件名	LP3906

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

PDF	38 Pages

Scroll/Zoom	100%

制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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1 / 38 page

LP3906

Dual High-Current Step-Down DC/DC and Dual Linear

Regulator with I2C Compatible Interface

General Description

The LP3906 is a multi-function, programmable Power Man-

agement Unit, optimized for low power FPGAs, Microproces-

sors and DSPs. This device integrates two highly efficient

1.5A Step-Down DC/DC converters with dynamic voltage

management (DVM), two 300mA Linear Regulators and a

400kHz I2C compatible interface to allow a host controller

access to the internal control registers of the LP3906. The

LP3906 additionally features programmable power-on se-

quencing and is offered in a tiny5x4x 0.8mm LLP-24 pin

package.

Key Specifications

Step-Down DC/DC Converter (Buck)

n

1.5A output current

n

Programmable Vout from:

— Buck1 : 0.8V–2.0V

— Buck2 : 1.0V–3.5V

n

Up to 96% efficiency

n

2 MHz PWM switching frequency

n ±

3% output voltage accuracy

n

Automatic soft start

Linear Regulators (LDO)

n

Programmable V

OUT of 1.0V–3.5V

n ±

3% output voltage accuracy

n

300 mA output currents

n

25 mV (typ) Dropout

Features

n

Compatible with advanced applications processors and

FPGAs

n

2 LDOs for powering Internal processor functions and

I/Os

n

High speed serial interface for independent control of

device functions and settings

n

Precision internal reference

n

Thermal overload protection

n

Current overload protection

n

24-lead5x4x0.8mmLLP package

n

Software Programmable Regulators

Applications

n

FPGA, DSP core power

n

Applications processors

n

Peripheral I/O power

September 2006

DS201978

www.national.com

类似零件编号 - LP3906

制造商	部件名	数据表	功能描述
Texas Instruments	LP3906	3Mb / 47P	Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C ompatible
	LP3906	3Mb / 47P	Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface
	LP3906SQ-DJXI	3Mb / 47P	Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C ompatible
	LP3906SQ-DJXI/NOPB	3Mb / 47P	Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface
	LP3906SQ-FXPI	3Mb / 47P	Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C ompatible

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类似说明 - LP3906

制造商	部件名	数据表	功能描述
National Semiconductor ...	LP3907	2Mb / 42P	Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface
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