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ACPL-K376

更新时间： 2024-09-22 01:19:03
品牌 Logo 应用领域
安华高科 - AVAGO /
页数 文件大小 规格书
13页 190K
描述
Isolated Voltage/Current Detector

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ACPL-K376 数据手册

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ACPL-K370, ACPL-K376  
Isolated Voltage/Current Detector  
Data Sheet  
Description  
Features  
The ACPL-K370 and ACPL-K376 are voltage/current ꢀꢁꢁ 5% voltage detection accuracy  
threshold detection optocouplers. The ACPL-K376 is a low-  
current version of the ACPL-K370. To obtain lower current  
operation, the ACPL-K376 uses a high-efficiency AlGaAs  
ꢀꢁꢁ Wide AC or DC detection range: up to 1140 Vpeak  
ꢀꢁꢁ User configurable single/dual detection levels  
LED which has higher light output at lower drive currents. ꢀꢁꢁ Built-in hysteresis improves noise immunity  
Both devices have a threshold sensing input buffer IC  
that allows threshold levels to be set by a single external  
resistor over a wide range of input voltages.  
ꢀꢁꢁ Very low threshold current: 1.32 mA (ACPL-K376)  
ꢀꢁꢁ Logic compatible output  
ꢀꢁꢁ Wide output supply voltage: 2 V to 18 V  
The input buffer has several performance enhancing  
ꢀꢁꢁ –40°C to +105°C operating temperature range  
ꢀꢁꢁ SSO-8 package with 8 mm creepage and clearance  
ꢀꢁꢁ Safety and regulatory approval:  
features: hysteresis for extra noise immunity and  
switching immunity, a diode bridge for easy use with AC  
input signals, and internal clamping diodes to protect the  
buffer and LED from over-voltage and over-current tran-  
sients. Because threshold sensing is done prior to driving  
the LED, variations in optical coupling from the LED to the  
detector will not effect the threshold levels.  
– IEC/EN/DIN EN 60747-5-5: 1140 Vpeak working  
insulation voltage  
– UL 1577: 5000 Vrms/1minute double protection  
rating  
The ACPL-K370 input buffer IC has a nominal turn-on  
– CSA: Component Acceptance Notice #5  
threshold of 3.8 V(V ) and 2.77 mA (I ). The buffer  
TH+  
TH+  
IC for the ACPL-K376 is designed for lower input current.  
The nominal turn-on threshold for the ACPL-K376 is 3.8 V  
Applications  
ꢀꢁꢁ Limit switch sensing  
(V ) and 1.32 mA (I ), which reduces power dissipa-  
TH+  
TH+  
tion by 52%.  
ꢀꢁꢁ Low voltage detector  
ꢀꢁꢁ AC mains and DC-link voltage detection  
ꢀꢁꢁ Relay contact monitor  
The high-gain output stage features an open-collector  
output for both TTL compatible saturation voltages and  
CMOS compatible breakdown voltages.  
ꢀꢁꢁ Relay coil voltage monitor  
ꢀꢁꢁ Current sensing  
By combining many unique functions in a single package, the  
ACPL-K370 and ACPL-K376 are ideal components for indus-  
trial control computer input boards and other applications  
where a predetermined input threshold level is needed.  
ꢀꢁꢁ Microprocessor interfacing  
ꢀꢁꢁ Telephone ring detection  
Functional Diagram  
Connection Diagram  
ISOLATION BARRIER  
ICC  
AC1  
DC+  
DC  
AC2  
1
2
3
4
8
7
6
5
VCC  
NC  
D2  
D4  
RX  
D1  
D3  
AC/DC  
POWER  
CONTROLLER  
IO  
TRUTH TABLE  
(POSITIVE LOGIC)  
VO  
INPUT OUTPUT  
ACPL-K370  
ACPL-K376  
H
L
L
H
GND  
GND1  
GND2  
Figure 1. Functional Diagram  
Figure 2. Connection Diagram  
1234567...13

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