2-Phase/1-2 Phase Excitation
UCN5804B
Allegro MicroSystems product
2-Phase Stepper Motor Unipolar Driver IC
sFeatures
q
Internal 1-phase/1-2 phase/2-phase excita-
tion pattern generator
q
Output enable and direction control
q
Power-on reset
q
Internal thermal shutdown circuitry
q
Internal transient-suppression diodes
q
Low thermal resistance 16-pin DIP
Absolute Maximum Ratings
Parameter
Output voltage
Output sustaining voltage
Output current (1 circuit)
Logic supply voltage
Input voltage
Package power dissipation
Operating temperature
Junction temperature
Storage temperature
Symbol
V
CE
V
CE (SUS)
I
O
V
DD
V
IN
P
D (Note1)
T
a
T
j (Note2)
T
stg
Ratings
50
35
1.5
7.0
7.0
2.90
−20
to +85
+150
−55
to +150
(T
a
=+25°C)
Units
V
V
A/unit
V
V
W/pkg
°C
°C
°C
Note 1: When ambient temperature is 25°C or over, derate using
−23.3mW/°C.
Note 2: Fault conditions where junction temperature (T
j
) exceeds 150°C will activate the device's thermal
shutdown circuitry. These conditions can be tolerated but should be avoided.
sElectrical
Characteristics
Parameter
Output drivers
Output leakage current
Output sustaining voltage
Output saturation voltage
Clamp diode leakage current
Clamp diode forward voltage
Turn-on delay
Turn-off delay
Thermal shutdown temperature
Control logic
Input current
Input voltage
Supply current
Data setup time
Data hold time
Clock pulse width
q
"typ" values are for reference.
I
CEX
V
CE (SUS)
V
CE (SAT)
I
R
V
F
t
ON
t
OFF
T
j
I
IH
I
IL
V
IH
V
IL
I
DD
t
s DAT (A)
t
h DAT (B)
t
w CLK (C)
V
O
=50V
I
O
=1.25A, L=3mH
I
O
=700mA
I
O
=1A
I
O
=1.25A
V
R
=50V
I
F
=1.25A
50% step inputs to 50% output
50% step inputs to 50% output
Symbol
Conditions
(Unless specified otherwise, T
a
=25°C, V
DD
=4.5V to 5.5V)
Limits
min
typ
10
max
50
Units
V
IN
=V
DD
V
IN
=0.8V
V
DD
=5V
2 outputs ON
Inter-clock
Inter-clock
µ
A
3.5
V
1.0
1.2
V
1.1
1.4
V
1.2
1.5
V
10
50
µ
A
1.5
3.0
V
10
µ
s
10
µ
s
165
°C
(Unless specified otherwise, V
IN
=V
DD
or GND)
0.5
5.0
µ
A
−0.5
−5.0
µ
A
3.5
5.3
V
−0.3
0.8
V
20
30
mA
100
ns
100
ns
500
ns
sTiming
Conditions
sTerminal
Connection Diagram
CLOCK
OUTPUT
B
1
2
3
4
LOGIC
GROUND
OUTPUT
C
K
AC
5
6
7
8
12
11
10
9
V
DD
OE
16
15
14
13
SUPPLY
OUTPUT
ENABLE
DIRECTION
GROUND
GROUND
STEP INPUT
HALF-STEP
ONE-PHASE
C
ONE PHASE
HALF-STEP
OUTPUT
ENABLE
OUTPUT
A
OUTPUT
B
OUTPUT
C
A
B
K
BD
OUTPUT
D
GROUND
OUTPUT
D
TWO-PHASE
HALF-STEP
WAVE DRIVE
OUTPUT
DISABLED
OUTPUT
A
42
UCN5804B