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FD0251bVR-G1 Schematic ( PDF Datasheet ) - Feeling Technology

Teilenummer FD0251bVR-G1
Beschreibung Smart motor driver
Hersteller Feeling Technology
Logo Feeling Technology Logo 




Gesamt 13 Seiten
FD0251bVR-G1 Datasheet, Funktion
FEELING
TECHNOLOGY
FD0251b
FD0255b
Smart motor driver with embedded Hall sensor
FEATURES
Motor driver with integrated Hall sensor
High current driving capability
Lock-shutdown protection & auto-restart function
Halogen
Free
Built-in FG(frequency generation) signal output “Soft-switch” phase-switching technique to reduce vibration
and acoustic noise
Thermal shutdown protection
PWM speed control(only available for FD0255b)
Available in both T825(FD0251b) and T826(FD0255b) packages
GENERAL DESCRIPTION
FD0251b/FD0255b is a single coil motor driver with embedded Hall sensor. It integrates the motor driver with the
Hall sensor, which simplifies the PCB(printed circuit board) design and make the fabrication of small-size motors
possible.
Lock-shutdown and auto-restart function keeps the motor from being over-heated and restarts the motor after being
locked.
FD0251b and FD0255b are built-in the signal output of rotation speed function, the system could detect the rotation
speed of motor when using FD0251b and FD0255b.
“Soft-switch” phase-switching technique is used to reduce the vibration and acoustic noise.
Thermal-shutdown protection ensures the motor driver to operate under specified temperature ranges.
All the protection mechanisms mentioned above combine to provide a complete protecting scenario for the motor
system, keep the motor system from possible damages and guarantee correct operations.
BLOCK DIAGRAM
Bias Generator
Hall Plate
Chopper amplifier PWM control
Oscillator
Power-On
Reset
Digital control logics
Figure.1
Coil Driver
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Rev1.9 Dec. 18, 2008
P.1






FD0251bVR-G1 Datasheet, Funktion
FEELING
TECHNOLOGY
Application Circuit Reference
FD0251b
FD0255b
FD0251b
VDD D1
Schottky
diode 0.2V
4.7 Ohm
(0603)
R1
MLCC (0603)
2.2uF/6.3V
C1
54
ZD1 bb
6.5V
g
123
R2
100 Ohm
(0603)
L1
VDD D1
Schottky
diode 0.2V
4.7 Ohm
(0603)
R1
MLCC (0603)
2.2uF/6.3V
C1
FD0255b
R4
1K Ohm
(0603)
R3
654
ZD1 ba
6.5V
g
123
R2
100 Ohm
(0603)
L1
Figure.8
Note:
Must use C1 capacitor for the decoupling between VDD and VSS and place the capacitor as close to the IC as
possible.
Option component
1. ZD1: VDD over-voltage stress protection diode.
2. R2: current limit resistor for Open Drain FG output.
3. R3: PWM Pull-up resistor for Open Drain PWM source signal.
4. R4: de-coupling resistor for long-distance signal transmission .
Rev1.9 Dec. 18, 2008
P.6

6 Page









FD0251bVR-G1 pdf, datenblatt
FEELING
TECHNOLOGY
PACKING SPECIFICATION (Tapping Reel)
T825,T826
FD0251b
FD0255b
PACKING QUANTITY SPECIFICATION
4000ea / 1 Reel
2 Reels / 1 INSIDE BOX
4 INSIDE BOXes / 1 OUTSIDE BOX
Rev1.9 Dec. 18, 2008
P.12

12 Page





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