Datasheet

1.345
1.346
1.347
1.348
1.349
1.350
1.351
9 19 29 39 49 59 69 79
T
J
= −405C
T
J
= 1255C
T
J
= 255C
− EN Threshold Voltage (Rising) − V
V
EN
V
CC
− Supply Voltage − V
1.245
1.246
1.247
1.248
1.249
1.250
1.251
1.252
1.253
1.254
1.255
9 19 29 39 49 59 69 79
− EN Threshold Voltage (Falling) − V
T
J
= −405C
T
J
= 1255C
T
J
= 255C
V
EN
V
CC
− Supply Voltage − V
9.60
9.65
9.70
9.75
9.80
9 19 29 39 49 59 69 79
T
J
= −405C
T
J
= 1255C
T
J
= 255C
− Charge/Discharge Ratio
I
Timer
V
CC
− Supply Voltage − V
TPS2490
TPS2491
www.ti.com SLVS503D –NOVEMBER 2003–REVISED JULY 2012
TYPICAL CHARACTERISTICS (continued)
TIMER CHARGE/DISCHARGE RATIO EN THRESHOLD VOLTAGE (FALLING)
vs vs
SUPPLY VOLTAGE AND TEMPERATURE SUPPLY VOLTAGE
Figure 10. Figure 11.
EN THRESHOLD VOLTAGE (RISING)
vs
SUPPLY VOLTAGE
Figure 12.
Copyright © 2003–2012, Texas Instruments Incorporated 7