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LM3814M-1.0 データシート(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM3814M-1.0
部品情報  Fast Current Gauge IC with Ultra Low Loss Sense Element and PWM Output
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3814M-1.0 データシート(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:
LM3814M-1.0
±1A
6 ms
High-side
M08A
SO-8
95 units in Rails
LM3814MX-1.0
±1A
6 ms
High-side
M08A
SO-8
2.5k units on Tape and Reel
LM3814M-7.0
±7A
6 ms
High-side
M08A
SO-8
95 units in Rails
LM3814MX-7.0
±7A
6 ms
High-side
M08A
SO-8
2.5k units on Tape and Reel
LM3815M-1.0
±1A
6 ms
Low-side
M08A
SO-8
95 units in Rails
LM3815MX-1.0
±1A
6 ms
Low-side
M08A
SO-8
2.5k units on Tape and Reel
LM3815M-7.0
±7A
6 ms
Low-side
M08A
SO-8
95 units in Rails
LM3815MX-7.0
±7A
6 ms
Low-side
M08A
SO-8
2.5k units on Tape and Reel
# Suffix M indicates that the part is available in Surface
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.
The Package code M08A is internal to National Semicon-
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
DD through a pull up resistor for normal operation. When
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
DD through a pull up resistor for normal operation. When
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
DD (supply)
www.national.com
2


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