3966
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 30 V, VCC = 4.75 V to 5.5 V, VREF = 2 V,
VS = 0 V, 56 kΩ & 680 pF RC to Ground (unless noted otherwise) (cont.)
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Control Logic (continued)
PWM RC Frequency
fosc
CT = 680 pF, RT = 56 kΩ
Comparator Trip to Source OFF
Cycle Reset to Source ON
1 kΩ Load to 25 V
22.9
—
25.4
1.0
27.9
1.4
kHz
µs
PWM Propagation Delay Time
tPWM
—
0.8
1.2
µs
Cross-Over Dead Time
Propagation Delay Times
tcodt
tpd
0.2
1.8
3.0
µs
IOUT = ±650 mA, 50% to 90%:
ENABLE ON to Source ON
ENABLE OFF to Source OFF
ENABLE ON to Sink ON
—
—
—
—
—
—
—
—
100
500
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
200
ENABLE OFF to Sink OFF
PHASE Change to Sink ON
PHASE Change to Sink OFF
PHASE Change to Source ON
PHASE Change to Source OFF
200
2200
200
2200
200
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
TJ
—
—
165
15
—
—
°C
°C
V
∆TJ
VT(UVLO)+
VT(UVLO)hys
ICC(ON)
Increasing VCC
—
4.1
0.6
—
4.6
—
0.1
—
V
Logic Supply Current
VENABLE 1 = VENABLE 2 = 0.8 V
VENABLE 1 = VENABLE 2 = 2.4 V
50
9.0
mA
mA
ICC(OFF)
—
—
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
4
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
