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LM3822 bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM3822
Giải thích chi tiết về linh kiện  Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM Output
PDF  12 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3822 bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI)

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Ordering Information
Order No.
*
Sense
Range
Sampling
Interval*
Sensing
Method
NS
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
DD
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
DD 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.
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