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Micropower, Rail to Rail Input Current Sense Amplifier with

Voltage Output

ISL28006

The ISL28006 is a micropower, uni-directional high-side and

low-side current sense amplifier featuring a proprietary

rail-to-rail input current sensing amplifier. The ISL28006 is

ideal for high-side current sense applications where the sense

voltage is usually much higher than the amplifier supply

voltage. The device can be used to sense voltages as high as

28V when operating from a supply voltage as low as 2.7V. The

micropower ISL28006 consumes only 50µA of supply current

when operating from a 2.7V to 28V supply.

The ISL28006 features a common-mode input voltage range

from 0V to 28V. The proprietary architecture extends the input

voltage sensing range down to 0V, making it an excellent

choice for low-side ground sensing applications. The benefit of

this architecture is that a high degree of total output accuracy

is maintained over the entire 0V to 28V common mode input

voltage range.

The ISL28006 is available in fixed (100V/V, 50V/V, 20V/V and

Adjustable) gains in the space saving 5 Ld SOT-23 package

and the 6 Ld SOT-23 package for the adjustable gain part. The

parts operate over the extended temperature range from

-40°C to +125°C.

Features

• Low Power Consumption. . . . . . . . . . . . . . . . . . . . . . 50µA, Typ

• Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7V to 28V

• Wide Common Mode Input. . . . . . . . . . . . . . . . . . . . 0V to 28V

• Gain Versions

- ISL28006-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/V

- ISL28006-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V/V

- ISL28006-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V/V

- ISL28006-ADJ . . . . . . . . . . . . . . . . ADJ (Min Gain = 20V/V)

• Operating Temperature Range . . . . . . . . . . . . -40°C to +125°C

• Packages. . . . . . . . . . . . . . . . . . . . . .5 Ld SOT-23, 6 Ld SOT-23

Applications

• Power Management/Monitors

• Power Distribution and Safety

• DC/DC, AC/DC Converters

• Battery Management/Charging

• Automotive Power Distribution

Related Literature

• See AN1532 for “ISL28006 Evaluation Board User’s Guide”

FIGURE 1. TYPICAL APPLICATION

ISL28006

GND

ISL28006

ISL28006

+5VDC

+12VDC

+

-

+1.0VDC

+1.0VDC

SENSE

SENSE

SENSE

OUTPUT

+5VDC

OUTPUT

+12VDC

OUTPUT

MULTIPLE

OUTPUT

POWER SUPPLY

+12VDC

+5VDC

+1.0VDC

+

-

+

-

+5VDC

+5VDC

+5VDC

0

2468 10 12 14 16 18 20 22 24 26 28

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

+100°C

+25°C

-40°C

+125°C

GAIN 100

May 23, 2011

FN6548.5