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PDF AH477 Data sheet ( Hoja de datos )
| Número de pieza | AH477 | |
| Descripción | SINGLE PHASE HALL EFFECT LATCH | |
| Fabricantes | BCD | |
| Logotipo |  |
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SINGLE PHASE HALL EFFECT LATCH
Description
The AH477 is an integrated Hall sensor with output driver
designed for electronic commutation of brushless DC
motor applications. The device includes an on-chip Hall
sensor for magnetic sensing, an amplifier that amplifies
the Hall voltage, a comparator to provide switching hys-
teresis for noise rejection, a bi-directional drivers for sink-
ing and driving large current load. It also includes an
www.DataSheeti4nUte.cronmal bandgap regulator to provide temperature com-
pensated bias for internal circuits and allows a wide oper-
ating supply voltage range.
Placing the device in a variable magnetic field, if the mag-
netic flux density is larger than threshold BOP, the DO is
turned to sink and DOB is turned to drive. This output
state is held until the magnetic flux density reverses and
falls below BRP, then causes DO to be turned to driveand
DOB turned to sink.
Parametric Table
Product Brief
AH477
Supply Voltage (V)
Output Down Saturation Voltage (V)
Output Up Saturation Voltage (V)
Supply Current (mA)
Hysteresis (Gauss)
Package
4 to 20
0.25
1.0
14
70
TO-94
Features
· On-Chip Hall Sensor
· Operating Voltage: 4V to 20V
· H-Bridge Output Drivers for Single Coil
· Internal Bandgap Regulator for Temperature Com-
pensation
· Low Output Switching Current Noise
· -20oC to 85oC Operating Temperature
· Low Profile TO-94 (SIP-4L) Package
· ESD Rating: 3000V (Human Body Model)
Benefits
· Minimum External Components
· Good High Temperature Performance
· High Efficiency
· Rotate Reposefully
Applications
· Single-Coil Brushless DC Motor
· Single-Coil Brushless DC Fan
Additional Available Materials
· Samples
· Preliminary Datasheet
· Reliability Report
· ESD Report
Nov. 2007
BCD Semiconductor Manufacturing Limited
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet AH477.PDF ] | |
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