參數(shù)資料
型號(hào): LM3822MM-1.0
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類(lèi): 模擬信號(hào)調(diào)理
英文描述: Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM Output
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO8
封裝: MSOP-8
文件頁(yè)數(shù): 2/12頁(yè)
文件大小: 265K
代理商: LM3822MM-1.0
Ordering Information
Order No.
*
Sense
Range
Sampling
Interval
*
Sensing
Method
NS
Package
Number
MUA08A
Package
Type
MSOP-8
Supplied As:
LM3822MM-1.0
±
1.0A
50 ms
High-side
Tape and Reel
(1000 units/reel)
Tape and Reel
(3500 units/reel)
Tape and Reel
(1000 units/reel)
Tape and Reel
(3500 units/reel)
LM3822MMX-1.0
±
1.0A
50 ms
High-side
MUA08A
MSOP-8
LM3822MM-2.0
±
2.0A
50 ms
High-side
MUA08A
MSOP-8
LM3822MMX-2.0
±
2.0A
50 ms
High-side
MUA08A
MSOP-8
*
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
1
2
3
4
5
Name
Function
SENSE+, V
DD
GND
FLTR+
FLTR
SD
High side of internal current sense, also supply voltage.
Supply Ground.
Filter input — provides anti-aliasing for delta sigma modulator.
Filter input.
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.
Connect to GND for normal operation.
Digital output indicates the current magnitude and direction.
Low side of internal current sense.
6
7
8
TEST
PWM
SENSE
L
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