Datasheet

TPS70245, TPS70248
TPS70251, TPS70258
TPS70202
SLVS286E –JUNE 2000–REVISED DECEMBER 2009 www.ti.com
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,
EN1 = 0V, EN2 = 0V, and C
O
= 33μF (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
PG1/PG2 Terminal
Minimum input voltage for valid PGx I
(PGx)
= 300μA, V
(PGx)
≤ 0.8V 1.0 1.3 V
Trip threshold voltage V
O
decreasing 92 95 98 %V
OUT
Hysteresis voltage Measured at V
O
0.5 %V
OUT
t
r(PGx)
Rising edge deglitch 30 μs
Output low voltage V
IN
= 2.7V, I
(PGx)
= 1mA 0.15 0.4 V
Leakage current V
(PGx)
= 6V 1 μA
EN1/EN2 Terminal
High-level ENx input voltage 2 V
Low-level ENx input voltage 0.7 V
Input current (ENx) –1 1 μA
MR Terminal
High-level input voltage 2 V
Low-level input voltage 0.7 V
Pull-up current source 6 μA
V
OUT1
Terminal
I
O
= 500mA, V
IN1
= 3.2V T
J
= +25°C 170
Dropout voltage
(4)
mV
I
O
= 500mA, V
IN1
= 3.2V 275
Peak output current 2ms pulse width 750 mA
Discharge transistor current V
OUT1
= 1.5V 7.5 mA
V
OUT2
Terminal
Peak output current 2ms pulse width 375 mA
Discharge transistor current V
OUT2
= 1.5V 7.5 mA
FB Terminal
Input current: TPS70202 FB = 1.8V 1 μA
(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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