Datasheet > SMM153_10

SMM153_10

更新时间： 2022-05-07 01:24:20

品牌	Logo	应用领域
SUMMIT		监视器
页数	文件大小	规格书
18页	230K
描述
10-bit Digital Differential Voltage and Current Monitor

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SMM153_10 数据手册

SMM153

10-bit Digital Differential Voltage and Current Monitor

FEATURES & APPLICATIONS

INTRODUCTION

The SMM153 is a highly accurate power supply

voltage/current supervisor and monitor that allows real-

time power measurement for power-critical designs. The

part includes an internal voltage reference to accurately

monitor the supply to within ±1%. The SMM153 can read

the differential voltage of the supply and voltage drop of

the current sense resistor over the I²C bus using an on-

chip 10-bit ADC.

• Real-time power monitoring for “Green” systems

• Differential Voltage Sensing of the DC-DC converter

output voltage

• Supply-side current monitoring (10-bit ADC)

• 10-bit ADC readout of supply voltage over I²C bus

• Two programmable general purpose sensor inputs

(COMP1/2) – UV/OV with FAULT Output

• Programmable glitch filters (COMP1/2)

• Programmable internal COMP1/2 VREF: 0.5V or 1.25V

• Operates from 2.7V to 5.5V supply

• Current sensing from 4.0V to 15V supply

• Programmable general-purpose inputs/outputs

• General-purpose 256-Byte EEPROM with Write Protect

• I²C 2-wire serial bus for programming configuration and

monitoring status

Two general purpose analog input pins are provided for

sensing under- or over-voltage conditions.

programmable glitch filter associated with these inputs

allows the user to ignore spurious noise signals. A

FAULT# pin is asserted once either input set point is

exceeded. The

SMM153

also provides

four

programmable general-purpose inputs/outputs.

• 28-lead 5x5 QFN package

Using the I²C interface, a host system can communicate

with the SMM153 status register and utilize 256-bytes of

nonvolatile memory. The SMM153 operates from +2.7V

to +5.5V, however it can sense input current from an

input supply of +4.0V to +15V. The device is offered in

both commercial and industrial temperature ranges and

the package is a space-saving 5x5 QFN-28 one.

Applications

•

In-system test and control of Point-of-Load (POL)

Power Supplies for Multi-voltage Processors, DSPs

and ASICs

•

Routers, Servers, Storage Area Networks

TYPICAL APPLICATION

12VIN

R_S

2.7V-5.5V

CAPC

CS-

CS+

VDD

GND

VDD_CAP

COMP1

COMP2

VREF

Status

Output

FAULT#

VIN

VOUT+

SEN+

SDA

I²C

Interface

SMM153

SCL

A0-A2

VOUT-

SEN-

CAPM+

CAPM-

DC-DC Converter

GPIO0

GPIO1

GPIO2

GPIO3

VM+

VM-

Figure 1 – Application with the SMM153 used to Monitor a DC/DC Converter.

Notes: R_Smust be Kelvin sensed for maximum current sensing accuracy. This is an applications example only. Some components and values

are not shown.

http://www.summitmicro.com/

2134 3.0 1/20/2010

12 3 4 5 6 7...18

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