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參數資料
| 型號： | LM3812 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output |
| 中文描述： | 精密電流計IC，與超低的失落感元素和PWM輸出 |
| 文件頁數： | 2/14頁 |
| 文件大小： | 258K |
| 代理商： | LM3812 |
Ordering Information
Order No.
#
Sense
Range
±
1A
±
1A
±
7A
±
7A
±
1A
±
1A
±
7A
±
7A
Sampling
Interval
*
50 ms
50 ms
50 ms
50 ms
50 ms
50 ms
50 ms
50 ms
Sensing
Method
High-side
High-side
High-side
High-side
Low-side
Low-side
Low-side
Low-side
NS
Package
Number
M08A
M08A
M08A
M08A
M08A
M08A
M08A
M08A
Package
Type
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
SO-8
Supplied As:
LM3812M-1.0
LM3812MX-1.0
LM3812M-7.0
LM3812MX-7.0
LM3813M-1.0
LM3813MX-1.0
LM3813M-7.0
LM3813MX-7.0
#
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 Semiconductor and indicates an 8-lead surface mount package, SO-8.
95 units in Rails
2.5k units on Tape and Reel
95 units in Rails
2.5k units on Tape and Reel
95 units in Rails
2.5k units on Tape and Reel
95 units in Rails
2.5k units on Tape and Reel
Pin Description (High-Side, LM3812)
Pin
1
2
3
4
5
Name
Function
SENSE+, V
DD
SENSE
FLTR+
FLTR
SD
High side of internal current sense, also supply voltage.
Low side of internal current sense.
Filter input — provides anti-aliasing for delta sigma modulator.
Filter input.
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).
PWM output indicates the current magnitude and direction.
Ground
Ground
6
7
8
PWM
GND
GND
Pin Description (Low-Side, LM3813)
Pin
1
2
3
4
5
Name
Function
SENSE+, GND
SENSE
FLTR+
FLTR
SD
High side of internal current sense, also ground.
Low side of internal current sense.
Filter input – provides anti-aliasing for delta sigma modulator.
Filter input.
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).
PWM output indicates the current magnitude and direction.
Ground
V
DD
(supply)
6
7
8
PWM
GND
V
DD
www.national.com
2
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| LM3815MX-1.0 | Fast Current Gauge IC with Ultra Low Loss Sense Element and PWM Output |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3812EVAL | 功能描述:BOARD EVALUATION LM3812 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| LM3812FM-1.0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Sense Gauge |
| LM3812FM-7.0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Sense Gauge |
| LM3812M-1.0 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Current Gauge IC with Ultra Low Loss Sense Element and PWM Output |
| LM3812M-1.0/NOPB | 功能描述:IC CURRENT GAUGE PREC 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)流/電流管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 功能:電流開關 檢測方法:- 精確度:±10% 輸入電壓:1.7 V ~ 5.5 V 電流 - 輸出:600mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
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