3968
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
WITH BRAKE
ELECTRICAL CHARACTERISTICS at T
A
= +25
°
C, V
BB
= 30 V, V
CC
= 4.75 V to 5.5 V, V
REF
= 2 V,
V
S
= 0 V, 56 k
Ω
& 680 pF RC to Ground (unless noted otherwise) (cont.)
Limits
Characteristic
Control Logic
(continued)
PWM RC Frequency
PWM Propagation Delay Time
f
osc
t
PWM
C
T
= 680 pF, R
T
= 56 kΩ
Comparator Trip to Source OFF
Cycle Reset to Source ON
Cross-Over Dead Time
Propagation Delay Times
t
codt
t
pd
1 kΩ Load to 25 V
I
OUT
=
±650
mA, 50% to 90%:
Disable OFF to Source ON
Disable ON to Source OFF
Disable OFF to Sink ON
Disable ON to Sink OFF
Brake Enable to Sink ON
Brake Enable to Source OFF
22.9
—
—
0.2
—
—
—
—
—
—
—
—
Increasing V
CC
Both bridges ON (forward or reverse)
All INPUTs = 2.4 V
All INPUTs = 0.8 V
—
0.1
—
—
—
25.4
1.0
0.8
1.8
100
500
200
200
2200
200
165
15
4.1
0.6
—
—
—
27.9
1.4
1.2
3.0
—
—
—
—
—
—
—
—
4.6
—
50
9.0
95
kHz
µs
µs
µs
ns
ns
ns
ns
ns
ns
°C
°C
V
V
mA
mA
mA
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
T
J
∆T
J
V
T(UVLO)+
V
T(UVLO)hys
I
CC(ON)
I
CC(OFF)
I
CC(BRAKE)
NOTES:1. Typical Data is for design information only.
2. Negative current is defined as coming out of (sourcing) the specified device terminal.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
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