PAC1710 datasheet(13/48 Pages) MICROCHIP

13 / 48 page

 2015-2016 Microchip Technology Inc.

DS20005386B-page 13

PAC1710/20

4.0

GENERAL DESCRIPTION

The

PAC1710/20

bidirectional

high-side

current-sensing

device

with

precision

voltage

measurement capabilities. It measures the voltage

developed across an external sense resistor to

represent the high-side current of a battery or voltage

regulator. The PAC1710/20 also measures the

SENSE1+ and SENSE2+ pin voltages (VSOURCE) and

calculates average power over the integration period.

The PAC1710/20 measures the differential voltage

across an external sense resistor, digitizes it with a

variable resolution (6-bit to 11-bit plus sign)

Sigma-Delta ADC, and transmits via the SMBus or the

I2C™ protocol. The current range allows for large

variations in measured current with high accuracy and

low voltage drop across the resistor.

The PAC1710/20 has programmable high and low

limits for current sense and bus voltage with a

maskable ALERT signal to the host when an

out-of-limit measurement occurs.

A system diagram is shown in Figure 4-1.

FIGURE 4-1:

PAC1710/20 System Diagram.

PAC1710/20

Host

MCU

SMDATA

SMCLK

ALERT

VSOURCE

– 40V

Sense

Resistors

VDD

3.0V to 5.5V

ADDR_SEL

GND

3.0V to

5.0V

100k

– 1M

5.2V Zener

Note 1:

The device MUST be biased PRIOR to applying VSOURCE. Failure to do so will result in damage.

The unpowered bias on VDD must be greater than VDD, if VDD will be removed prior to VSOURCE.

*PAC1720 only.

PAC1710 Datasheet(PDF) 13 Page - Microchip Technology

PAC1710 Datasheet(HTML) 13 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Datasheet Download

Link URL