ACS709 Allegro MicroSystems, Inc., ACS709 Datasheet - Page 5

• Manufacturer Part Number: ACS709
• Description: High Bandwidth, Fast Fault Response Current Sensor Ic In Thermally Enhanced Package
• Manufacturer: Allegro MicroSystems, Inc.

ACS709
COMMON OPERATING CHARACTERISTICS
Characteristic
OVERCURRENT CHARACTERISTICS (continued)
Overcurrent Fault Response Time
Overcurrent Fault Reset Delay
Overcurrent Fault Reset Hold Time
Overcurrent Input Pin Resistance
VOLTAGE REFERENCE CHARACTERISTICS
Voltage Reference Output
Voltage Reference Output Load Current
Voltage Reference Output Drift
1
may be slightly degraded for V
2
3
4
5
6
7
8
fault switchpoint.
Devices are trimmed for maximum accuracy at V
R
This parameter can drift by as much as 0.25% over the lifetime of this product.
This parameter can drift by as much as 0.3% over the lifetime of this product.
Calculated using the formula f
See page 8 on how to set overcurrent fault switchpoint.
Switchpoint can be lower at the expense of switchpoint accuracy.
This error specification does not include the effect of noise. See the I
F(INT)
forms an RC circuit via the FILTER pin.
CC
3dB
values other than 5 V. Contact the Allegro factory for applications that require maximum accuracy for V
= 0.35 / t
r
.
High Bandwidth, Fast Fault Response Current Sensor IC
CC
Symbol
∆V
= 5 V. The ratiometry feature of the device allows operation over the full V
V
t
t
R
I
t
OCR
OCH
ZCR
OC
ZCR
OC
ZCR
(continued) Valid at T
Switchpoint set at 90% of I
delay from I
fault threshold to V
external C
Time from V
V
Time from V
fault latch; see Functional Block Diagram
T
T
Source current
Sink current
A
A
FAULT
= 25°C, VOC pin to GND
= 25 °C
NCOMP
> 0.8 × V
OC
P
FAULTEN
FAULTEN
Test Conditions
exceeding overcurrent
capacitor
specification in order to factor in the additional influence of noise on the
CC
A
¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯
, R
= –40°C to 150°C, V
< V
pin < V
PU
IL
< 0.4 V, without
= 330 kΩ
to
POA
IL
In Thermally Enhanced Package
to reset of
,
CC
= 5 V, unless otherwise specified
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Min.
50
–
–
–
2
–
3
–
0.5 × V
CC
Typ.
500
250
±10
1.9
range; however, accuracy
–
–
–
CC
CC
= 3.3 V.
Max.
–
–
–
–
–
–
–
–
Units
MΩ
mA
mV
μA
μs
ns
ns
V
5