DRV590_16 Datasheet, PDF (13/18 Pages) Texas Instruments – 1.2-A HIGH-EFFICIENCY PWM POWER DRIVER

DRV590
SLOS365A – AUGUST 2001 – REVISED AUGUST 2002
APPLICATION INFORMATION
maximum output current vs duty cycle (continued)
Table 2. Typical Maximum Output Specifications vs Duty Cycle (V_DD = 5 V)
DUTY CYCLE
100%
95%
90%
85%
84%
83%
82%
MAX IO (A)
1
1.05
1.11
1.17
1.19
1.2
1.22
MAX VLOAD (V)
4
3.69
3.38
3.07
3.01
2.94
2.88
PDISS (W)
1
1.11
1.24
1.39
1.42
1.45
1.49
TJ (°C)
67.6
72.2
77.6
83.9
85.3
86.8
88.3
At duty cycles less than 82%, the power dissipated from the theoretical maximum current flowing through the
on-resistance causes the junction temperature to exceed 89°C. See Figure 9 for more details.
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