Ordering Information

Order No.

#

Sense

Range

Sampling

Interval*

Sensing

Method

NS

Package

Number

‡

Package

Type

Supplied As:

LM3814M-1.0

6 ms

High-side

M08A

SO-8

95 units in Rails

LM3814MX-1.0

6 ms

High-side

M08A

SO-8

2.5k units on Tape and Reel

LM3814M-7.0

6 ms

High-side

M08A

SO-8

95 units in Rails

LM3814MX-7.0

6 ms

High-side

M08A

SO-8

2.5k units on Tape and Reel

LM3815M-1.0

6 ms

Low-side

M08A

SO-8

95 units in Rails

LM3815MX-1.0

6 ms

Low-side

M08A

SO-8

2.5k units on Tape and Reel

LM3815M-7.0

6 ms

Low-side

M08A

SO-8

95 units in Rails

LM3815MX-7.0

6 ms

Low-side

M08A

SO-8

2.5k units on Tape and Reel

Mount package. Suffix X indicates that the part is available in

2.5k units on Tape and 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.

ductor and indicates an 8-lead surface mount package,

SO-8.

Pin Description (High-Side, LM3814)

Pin Description (High-Side, LM3814)

Pin

Name

Function

1

SENSE+, V

DD

High side of internal current sense, also supply voltage.

2

SENSE−

Low side of internal current sense.

3

FLTR+

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

4

FLTR−

Filter input.

5SD

Shutdown pin. Connected to V

low, the IC goes into a low current mode (typically 3 µA).

6

PWM

PWM output indicates the current magnitude and direction.

7

GND

Ground

8

GND

Ground

Pin Description (Low-Side, LM3815)

Pin Description (Low-Side, LM3815)

Pin

Name

Function

1

SENSE+, GND

High side of internal current sense, also ground.

2

SENSE−

Low side of internal current sense.

3

FLTR+

Filter input – provides anti-aliasing for delta sigma modulator.

4

FLTR−

Filter input.

5SD

Shutdown pin. Connected to V

low, the IC goes into a low current mode (typically 3 µA).

6

PWM

PWM output indicates the current magnitude and direction.

7

GND

Ground

8V

DD

V

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