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ACS770 Datasheet(PDF) 23 Page - Allegro MicroSystems

Part # ACS770
Description  Thermally Enhanced, Fully Integrated, Hall Effect-Based High Precision Linear Current Sensor IC with 100 關廓 Current Conductor
PDF  29 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

ACS770 Datasheet(HTML) 23 Page - Allegro MicroSystems

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Thermally Enhanced, Fully Integrated, Hall Effect-Based
High Precision Linear Current Sensor IC with 100 µΩ Current Conductor
ACS770xCB
23
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
POWER-ON RESET RELEASE TIME (tPORR)
When VCC rises to VPORH, the Power-On Reset Counter starts.
The ACS770 output voltage will transition from a high imped-
ance state to normal operation only when the Power-On Reset
Counter has reached tPORR and VCC has exceeded VUVLOH.
UNDERVOLTAGE LOCKOUT THRESHOLD (VUVLO )
If VCC drops below VUVLOL, output voltage will be locked to
GND. If VCC starts rising, the ACS770 will come out of the
locked state when VCC reaches VUVLOH.
SYMMETRY (ESYM)
The degree to which the absolute voltage output from the IC
varies in proportion to either a positive or negative half-scale pri-
mary current. The following equation is used to derive symmetry:
100
V– V
IOUT_+half-scale amperes
IOUT(Q)
V
IOUT(Q)
IOUT_–half-scale amperes
–V
()
UVLO ENABLE/DISABLE RELEASE TIME (tUVLO)
When a falling VCC reaches VUVLOL, time tUVLOE is required
to engage Undervoltage Lockout state. When VCC rises above
VUVLOH, time tUVLOD is required to disable UVLO and have a
valid output voltage.



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