Datasheet

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TPS70745, TPS70748
TPS70751, TPS70758
TPS70702
SLVS291D – MAY 2000 – REVISED DECEMBER 2007
ELECTRICAL CHARACTERISTICS (continued)
Over recommended operating junction temperature range (T
J
= – 40 ° C to +125 ° C), V
IN1
or V
IN2
= V
OUT(nom)
+ 1V, I
O
= 1mA,
EN = 0V, and C
O
= 33 µ F (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OUT1
Terminal
V
OUT1
UV comparator: Positive-going
input threshold voltage of V
OUT1
UV 80% V
O
83% V
O
86% V
O
V
comparator
V
OUT1
UV comparator: Hysteresis 0.5% V
O
mV
V
OUT1
UV comparator: Falling edge
V
SENSE_1
decreasing below threshold 140 µ s
deglitch
Dropout voltage
(4)
I
O
= 250mA, T
J
= +25 ° C V
IN1
= 3.2V 83 mV
Dropout voltage
(4)
I
O
= 250mA, V
IN1
= 3.2V 140 mV
Peak output current
(4)
2ms pulse width 750 mA
Discharge transistor current V
OUT1
= 1.5V 7.5 mA
V
IN1
UVLO threshold 2.4 2.65 V
FB Terminal
Input current: TPS70702 FB = 1.8V 1 µ A
(4) Input voltage (V
IN1
or V
IN2
) = V
O(typ)
– 100mV. For 1.5V, 1.8V and 2.5V regulators, the dropout voltage is limited by input voltage range.
The 3.3V regulator input is set to 3.2V to perform this test.
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