Datasheet

       
       
    
SLVS230G − SEPTEMBER 1999 − REVISED JANUARY 2004
www.ti.com
8
electrical characteristics over recommended operating temperature range (TJ = −40°C to 125°C),
V
I
= V
O(typ)
+ 1 V, I
O
= 1 mA, EN = 0 V, C
o
= 10 µF (unless otherwise noted) (continued)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
Minimum input voltage for valid PG I
O(PG)
= 300 µA 1.1 V
PG
Trip threshold voltage V
O
decreasing 92 98 %V
O
PG
(TPS778xx)
Hysteresis voltage Measured at V
O
0.5 %V
O
(TPS778xx)
Output low voltage V
I
= 2.7 V, I
O(PG)
= 1 mA 0.15 0.4 V
Leakage current V
(PG)
= 5 V 1 µA
Input current (EN)
EN = 0 V −1 0 1
A
Input current (EN)
EN = V
I
−1 1
µA
TPS77733
I
O
= 750 mA, T
J
= 25°C 260
Dropout voltage (1)
TPS77733
I
O
= 750 mA, 427
mV
Dropout voltage (1)
TPS77833
I
O
= 750 mA, T
J
= 25°C 260
mV
TPS77833
I
O
= 750 mA, 427
(1)
IN voltage equals V
O
(typ) − 100 mV; TPS77x01 output voltage set to 3.3 V nominal with external resistor divider. TPS77x15, TPS77x18, and
TPS77x25 dropout voltage limited by input voltage range limitations (i.e., TPS77x33 input voltage needs to drop to 3.2 V for purpose of this
test).
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
V
O
Output voltage
vs Output current 2, 3, 4
V
O
Output voltage
vs Free-air temperature
5, 6, 7
Ground current vs Free-air temperature 8
Power supply ripple rejection vs Frequency 9
Output spectral noise density vs Frequency 10
Z
o
Output impedance vs Frequency 11
V
DO
Dropout voltage
vs Input voltage 12
V
DO
Dropout voltage
vs Free-air temperature
13
Input voltage (min) vs Output voltage 14
Line transient response 15, 17
Load transient response 16, 18
V
O
Output voltage vs Time 19
Equivalent series resistance (ESR) vs Output current 21 − 24