Datasheet

TPS7A45xx
SLVS720D –JUNE 2008–REVISED AUGUST 2011 www.ti.com
ELECTRICAL CHARACTERISTICS
(1)
(continued)
Over operating temperature range T
J
= –40°C to 125°C (unless otherwise noted)
PARAMETER TEST CONDITIONS T
J
MIN TYP
(2)
MAX UNIT
25°C 0.02 0.05
I
LOAD
= 1 mA
Full range 0.06
25°C 0.085 0.10
I
LOAD
= 100 mA
Full range 0.13
Dropout voltage
(4) (6) (7)
V
DO
V
V
IN
= V
OUT(NOMINAL)
25°C 0.17 0.180
I
LOAD
= 500 mA
Full range 0.250
25°C 0.300 0.350
I
LOAD
= 1.5 A
Full range 0.450
I
LOAD
= 0 mA Full range 1 1.5
I
LOAD
= 1 mA Full range 1.1 1.6
GND pin current
(7) (8)
I
GND
I
LOAD
= 100 mA Full range 3.3 3.5 mA
V
IN
= V
OUT(NOMINAL)
+ 1
I
LOAD
= 500 mA Full range 15 17
I
LOAD
= 1.5 A Full range 80 90
C
OUT
= 10 μF, I
LOAD
= 1.5 A,
e
N
Output voltage noise 25°C 35 μV
RMS
B
W
= 10 Hz to 100 kHz
I
ADJ
ADJ pin bias current
(3) (9)
25°C 3 7 μA
V
OUT
= OFF to ON Full range 0.9 2
Shutdown threshold V
V
OUT
= ON to OFF Full range 0.25 0.75
V
SHDN
= 0 V 25°C 0.01 1
I
SHDN
SHDN pin current μA
V
SHDN
= 20 V 25°C 3 20
Quiescent current in
V
IN
= 6 V, V
SHDN
= 0 V 25°C 0.01 1 μA
shutdown
V
IN
– V
OUT
= 1.5 V (avg), V
RIPPLE
= 0.5 V
P-P
,
Ripple rejection 25°C 68 dB
f
RIPPLE
= 120 Hz, I
LOAD
= 0.75 A
V
IN
= 7 V, V
OUT
= 0 V 25°C 2
I
LIMIT
Current limit A
V
IN
= V
OUT(NOMINAL)
+ 1 Full range 1.6
Input reverse leakage
I
IL
V
IN
= –20 V, V
OUT
= 0 V Full range 300 μA
current
TPS7A4515 V
OUT
= 1.5 V, V
IN
< 1.5 V 25°C 600 1000
TPS7A4518 V
OUT
= 1.8 V, V
IN
< 1.8 V 25°C 600 1000
I
RO
Reverse output current
(10)
TPS7A4525 V
OUT
= 2.5 V, V
IN
< 2.5 V 25°C 600 1000 μA
TPS7A4533 V
OUT
= 3.3 V, V
IN
< 3.3 V 25°C 600 1000
TPS7A4501 V
OUT
= 1.21 V, V
IN
< 1.21 V 25°C 300 500
(6) Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In
dropout, the output voltage is equal to: V
IN
– V
DROPOUT
.
(7) To satisfy requirements for minimum input voltage, the TPS7A4501 is tested and specified for these conditions with an external resistor
divider (two 4.12-kΩ resistors) for an output voltage of 2.4 V. The external resistor divider adds a 300-µA DC load on the output.
(8) GND pin current is tested with V
IN
= (V
OUT(NOMINAL)
+ 1 V) and a current source load. The GND pin current decreases at higher input
voltages.
(9) ADJ pin bias current flows into the ADJ pin.
(10) Reverse output current is tested with the IN pin grounded and the OUT pin forced to the rated output voltage. This current flows into the
OUT pin and out the GND pin.
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