ACS709 데이터 시트보기 (PDF) - Allegro MicroSystems
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ACS709
Allegro MicroSystems
ACS709 Datasheet PDF : 16 Pages
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ACS709
FAULT_EN
VOC
IP+
IP–
High Bandwidth, Fast Fault Response Current Sensor IC
In Thermally Enhanced Package
Functional Block Diagram
VCC
Hall
Bias
POR
POR
FAULT Reset
DQ
CLK
R
Sensitivity
Trim
Fault
Comparator
2VREF
Control
Logic
–
+
Drain
FAULT
3 mA
VZCR
Signal
Recovery
Hall
Amplifier
GND
RF(INT)
VOUT(Q)
Trim
FILTER
VIOUT
Pin-out Diagram
IP+ 1
IP+ 2
IP+ 3
IP+ 4
IP+ 5
IP+ 6
IP– 7
IP– 8
IP– 9
IP– 10
IP– 11
IP– 12
24 NC
23 NC
22 FAULT_EN
21 VOC
20 VCC
19 FAULT
18 VIOUT
17 FILTER
16 VZCR
15 GND
14 NC
13 NC
Terminal List Table
Number
1 through 6
Name
IP+
Description
Sensed current copper conduction path pins. Terminals for current being sensed;
fused internally, loop to IP– pins; unidirectional or bidirectional current flow.
7 through 12
IP–
Sensed current copper conduction path pins. Terminals for current being sensed;
fused internally, loop to IP+ pins; unidirectional or bidirectional current flow.
13, 14, 23, 24
NC
No connection
15
GND Device ground connection.
16
VZCR
Voltage Reference Output pin. Zero current (0 A) reference; output voltage on this
pin scales with VCC .
17
FILTER
Filter pin. Terminal for an external capacitor connected from this pin to GND to set
the device bandwidth.
18
VIOUT
Analog Output pin. Output voltage on this pin is proportional to current flowing
through the loop between the IP+ pins and IP– pins.
19
¯F¯ ¯A ¯U ¯¯L¯ ¯T¯
Overcurrent Fault pin. When current flowing between IP+ pins and IP– pins
exceeds the overcurrent fault threshold, this pin transitions to a logic low state.
20
VCC Supply voltage.
21
VOC
Overcurrent Input pin. Analog input voltage on this pin sets the overcurrent fault
threshold.
22
FAULT_EN Enables overcurrent faulting when high. Resets ¯F¯¯A¯U¯¯L¯¯T¯ when low.
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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