Rainbow-electronics LM3822 Manual de usuario descargar pdf (Pagina 2)

Ordering Information

Order No.

Sense

Range

Sampling

Interval*

Sensing

Method

Package

Number

Package

Type

Supplied As:

LM3822MM-1.0

1.0A 50 ms High-side MUA08A MSOP-8 Tape and Reel

(1000 units/reel)

LM3822MMX-1.0

1.0A 50 ms High-side MUA08A MSOP-8 Tape and Reel

(3500 units/reel)

LM3822MM-2.0

2.0A 50 ms High-side MUA08A MSOP-8 Tape and Reel

(1000 units/reel)

LM3822MMX-2.0

2.0A 50 ms High-side MUA08A MSOP-8 Tape and Reel

(3500 units/reel)

* Current is sampled over a fixed interval. The average current during this interval is indicated by the duty cycle of the PWM output during next interval.

Pin Description (High-Side, LM3822)

Pin Name Function

1 SENSE+, V

High side of internal current sense, also supply voltage.

2 GND Supply Ground.

3 FLTR+ Filter input — provides anti-aliasing for delta sigma modulator.

4 FLTR− Filter input.

5SD

Shutdown input. Connected to V

through a pull-up resistor for normal operation.

When low, the LM3822 is put into a low current mode.

6 TEST Connect to GND for normal operation.

7 PWM Digital output indicates the current magnitude and direction.

8 SENSE− Low side of internal current sense.

LM3822

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Rainbow-electronics LM3822 Manual de usuario Pagina 2

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