CMD1668M,CMD1667M
Two-Phase Unipolar Drive Brushless Motor Drivers
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 1 of 9
Rev 1.0 Aug. 23,2004
Overview
The
CMD1668M Series are 2-phase unipolar drive brushless
motor drivers that feature a wide usable voltage range and
a minimal number of required external components. They
also support the formation of motor lock protection and
automatic recovery circuits.
Functions and Features
Output protection Zener diodes with variable breakdown
voltages
-- When the Z1 and Z2 pins are open:
V
OLM
= 57 V
-- When the Z1 and Z2 pins are shorted: V
OLM
= 32 V
-- An external Zener diode can be connected between
Z1 and V
CC
.
Can support both 12-V and 24-V power supplies by
changing an external resistor.
Hall elements can be connected directly.
1.5-A output current output transistors built in
Built-in rotation detection function that outputs low
when driven and high when stopped (
CMD1668M)
FG signal function that sets FG high when IN- is low,
and sets FG low when IN- is high (
CMD1667M)
Motor lock protection and automatic recovery functions
built in
Thermal shutdown function
Package Dimensions
unit: mm
1
14
7
8
8.0
0.15
1.0 1.0
0.35
1.8max
1.5
0.1
4.4
6.4
5.15
0.625
SOP-14
[
CMD1668M, 1667M]
CMD1668M,CMD1667M
Two-Phase Unipolar Drive Brushless Motor Drivers
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 2 of 9
Rev 1.0 Aug. 23,2004
Parameter Symbol Conditions Ratings Unit
Input current range I
CC
6.0 to 50 mA
Common-mode input voltage range V
ICM
0 to V
IN
1.5 V
Allowable Operating Ranges
at Ta = 25C
Parameter Symbol Conditions
Ratings
Unit
min typ max
Output limit voltage
V
OLM
1 Z1, Z2 open 54 57 60 V
V
OLM
2 Z1, Z2 short 31 33 35 V
Vosat1 I
O
= 0.5 A 0.95 1.2 V
Output saturation voltage Vosat2 I
O
= 1.0 A 1.15 1.5 V
Vosat3 I
O
= 1.5 A 1.4 2.0 V
V
IN
voltage V
IN
I
CC
= 7.0 mA 6.4 6.7 7.0 V
Amplifier input offset voltage V
OFF
7.0 0 +7.0 mV
Amplifier input bias current I
BA
250 nA
RD output saturation voltage V
RD
sat I
RD
= 5 mA
*
0.1 0.3 V
FG output saturation voltage V
FG
sat I
FG
= 5 mA
*
0.1 0.3 V
C outflow current I
C
1 2.1 3.0 3.9 A
C discharge current I
C
2 0.31 0.44 0.59 A
Comparator input threshold voltage
V
TH
1 0.77 0.8V
IN
0.83 V
V
TH
2 0.42 0.45V
IN
0.48 V
Thermal shutdown current operating temperature TSD Design target value 180 C
Thermal shutdown circuit hysteresis
TSD Design target value 40 C
Electrical Characteristics
at Ta = 25C, I
CC
= 10 mA
Parameter Symbol Conditions Ratings Unit
Maximum input current I
CC
max
t
20 ms
200
mA
Output voltage
V
OUT
Internal
V
Output current
I
OUT
1.5
A
Output minus current
I
OM
50
mA
RD/FG influx current
I
RD
/I
FG
10
mA
RD/FG voltage
V
RD
/V
FG
30
V
CMD1667M, 1668M: Mounted on a printed circuit board
0.8
W
Allowable power dissipation Pd max (20
15
1.5 mm
3
, glass epoxy)
Operating temperature
Topr
30 to +80
C
Storage temperature
Tstg
55 to +150
C
Specifications
Absolute Maximum Ratings
at Ta = 25C
Note:
*
RD output:
CMD1668M, FG output: CMD1667M
CMD1668M,CMD1667M
Two-Phase Unipolar Drive Brushless Motor Drivers
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 3 of 9
Rev 1.0 Aug. 23,.2004
VIN RD
Z2 Z1 OUT2
NC
NC
CMD1668M, CMD1667M
IN- IN+ C NC
OUT1
NC
GND
1
4
1
3
9
1
0
11
1
2
8
1
2
6
5
4
3
7
CMD1667M
CM D 1668M
Block Diagram and Application Circuit
Truth Table (
CMD1667M)
IN+ IN C OUT1 OUT2 FG
H
L
L
H
L
H
L
H
L
L
H
L
H
L
H
H
H
H
L
H
H
H
H
H
Truth Table (
CMD1668M)
IN+
IN
C
OUT1
OUT2
RD
H
L
L
H
L
L
L
H
L
L
H
L
H
L
H
H
H
H
L
H
H
H
H
H
Pin Assignments
CMD1668M,CMD1667M
Two-Phase Unipolar Drive Brushless Motor Drivers
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 4 of 9
Rev 1.0 Aug. 23,2004
CMD1668M Sample Application Circuits
12-V power supply type
24-V power supply type
Two-Phase Unipolar Drive Brushless Motor Drivers
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 5 of 9
Rev 1.0 Aug. 23,.2004
Circuit for use when large output currents are required and heat dissipation is high.
CMD1667M Sample Application Circuits
12-V power supply type
CMD1668M,CMD1667M
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