Diodes AM4406 User Manual
Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F
General Description
The AM4406/4406F are 2-phase, half-wave motor predrivers fabricated for fan motors. These ICs are
equipped with lock shutdown and automatic restart
functions. The lock shutdown function turns off the
output current when the motor is under lock condition.
And when the motor is unlocked, the ICs will automatically restart and allow DC fan to run.
In addition, the AM4406 and AM4406F have RD and
FG functions respectively. The RD function is to detect
the motor status and FG function enables frequency
generation.
The AM4406/4406F are available in SOIC-8 package.
Features
· Hall Inputs with a Hysteresis
· Lock Shutdown and Automatic Restart
· Rotation Detection (RD) Output
· Frequency Generation (FG) Output
· Supply Voltage: 4 to 28V
· Output Current: 70mA Max.
o
· Operating Temperature: -40 to 95
C
Applications
· High Voltage, High Current Brushless DC Fan
· Power Supply and Switchboards
· Communications Facilities
· Industrial Equipment
SOIC-8
Figure 1. Package Type of AM4406/4406F
Nov. 2009 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
1
Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F
Pin Configuration
M Package
(SOIC-8)
VCC
HS (+)
RD/FG
HS (-)
Figure 2. Pin Configuration of AM4406/4406F (Top View)
1
2
3
4
OUT1
8
OUT2
7
CT
6
GND
5
Pin Description
Pin Name Function
Pin Number
AM4406 AM4406F
1 VCC VCC Power supply
2 HS (+) HS (+) Hall input (+)
3 RD FG Rotation detection/Frequency generation
4 HS (-) HS (-) Hall input (-)
5 GND GND Ground
6 CT CT Timing capacitor
7 OUT2 OUT2 Driver output 2
8 OUT1 OUT1 Driver output 1
Nov. 2009 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
2
Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F
Functional Block Diagram
VCC
HS (+)
RD/FG
HS (-)
1
Reg
2
3
4
Hall
Amp
Lock
Detector
Control Logic
Automatic
Restart
Pre-driver 1
Pre-driver 2
Comparator
Comparator
8
OUT1
7
OUT2
6
CT
5
GND
Figure 3. Functional Block Diagram of AM4406/4406F
Nov. 2009 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
3
Data Sheet
2-PHASE HALF-WAVE HIGH VOLTAGE MOTOR PRE-DRIVER AM4406/4406F
Ordering Information
AM4406 -
E1: Lead Free
Circuit Type
Blank: AM4406
F: AM4406F
G1: Green
TR: Tape and Reel
Blank: Tube
Package
M: SOIC-8
Package
SOIC-8
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Temperature
Range
o
-40 to 95
C
Lead Free Green Lead Free Green
AM4406M-E1 AM4406M-G1 AM4406M AM4406M-G1 Tube
AM4406MTR-E1 AM4406MTR-G1 AM4406M AM4406M-G1 Tape & Reel
Part Number Marking ID
AM4406FMTR-G1 AM4406FM-G1 Tape & Reel
Packing
Typ e
Nov. 2009 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
4
Loading...