ML4425CS Fairchild Semiconductor, ML4425CS Datasheet - Page 9

• Manufacturer Part Number: ML4425CS
• Description: IC BLDC MOTOR CONTROLLER 28-SOIC
• Manufacturer: Fairchild Semiconductor

Specifications of ML4425CS

• Applications: DC Motor Controller, Brushless (BLDC)
• Number Of Outputs: 1
• Current - Output: 50mA
• Voltage - Supply: 10.8 V ~ 13.2 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Operating Current: 50mA
• Operating Temperature Classification: Commercial
• Motor Controller Type: DC Motor Driver
• Package Type: SOIC W
• Operating Supply Voltage (min): 10.8V
• Operating Supply Voltage (max): 13.2V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Compliant

PRODUCT SPECIFICATION
Back EMF Sampler
REV. 1.0.2 7/2/01
MOTOR C
MOTOR A
MOTOR B
RES1
Neutral
f
F/R
MAX
670
RES1
RES2
RES3
0.05 N RPM
PH1
V
FB A
FB B
FB C
F/R
V
PH2
MOTOR
4k
4k
3
Figure 6. Back EMF Sampler Detailed Block Diagram
MAX
PH3
4k
4k
10V
4k
4k
MULTIPLEXER
SIMULATOR
A + B + C
NEUTRAL
6
GENERATOR
VCO/TACH
BACK EMF
SAMPLER
& RAMP
FROM
Figure 5. External VCO Component Connections
C VCO
4.3V
2.3V
5V
0V
(FROM C AT )
STATE MACHINE
RESET
COMMUTATION
CHANGER
SIGN
SPEED
C VCO
FB
C VCO
g m =
+
–
CONTROLLED
OSCILLATOR
VOLTAGE
8k
1
R VCO
TO
SPEED FB
R VCO
VCO/TACH
ML4425
9