Datasheet

TPS740xx
SBVS091C –JUNE 2011– REVISED DECEMBER 2011 www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= –40°C to +125°C), V
BIAS
= V
OUT
+ 2.0 V, V
IN
= V
OUT
+ 1 V, C
OUT
= 10 μF, following
Recommended Resistor Values, and V
EN
= 1.1 V, unless otherwise noted. Typical values are at T
J
= +25°C. TPS74001
(adjustable output voltage) is tested at V
OUT
= 0.9 V.
TPS740xx
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range 1.2 6.0 V
V
BIAS
Bias pin voltage range 2.9 6.0 V
T
J
= 25°C –1 1 %
V
OUT
Accuracy
(1)
T
J
= –40°C to +125°C –2 2 %
V
OUT
/V
IN
Line regulation V
IN
= V
OUT
+ 1 V to 6.0 V –0.1 0.01 0.1 %/V
V
OUT
/I
OUT
Load regulation I
LOAD
= 0 mA to 1.5 A
(2)
1.5 %
V
IN
dropout voltage
(3)
I
LOAD
= 1.5 A 100 300 mV
V
DO
V
BIAS
dropout voltage
(3)
I
LOAD
= 1.5 A, V
IN
= V
BIAS
1.3 1.6 V
I
GND
Ground pin current
(4)
I
LOAD
= 1.5 A 2 3 mA
Shutdown supply current Fixed output version only. V
EN
≤ 0.4 V,
I
SHDN
1 5 μA
(I
GND
) T
J
= –40°C to +85°C, V
OUT
= 0 V
I
BIAS
Bias pin current I
LOAD
= 1.5 A 2 mA
I
CL
Current limit V
OUT
= 80% × V
OUT (NOM)
1.6 6.0 A
V
EN, HI
Enable input high level 1.1 6.0 V
V
EN, LO
Enable input low level R
LOAD
= 1 kΩ to GND 0 0.4 V
I
EN
Enable pin current V
EN
= 1.5 V 0.1 1 μA
Operating junction
T
J
–40 +125 °C
temperature
Shutdown, temperature increasing +165
Thermal shutdown
T
SD
°C
temperature
Reset, temperature decreasing +140
V
REF
Reference voltage 0.882 0.9 0.918 V
(1) Adjustable output voltage devices: resistor tolerance is not taken into account.
(2) With a fixed output device, this test condition is I
LOAD
= 50 mA to 1.5 A.
(3) Dropout is defined as the voltage from the input voltage to V
OUT
when V
OUT
is 3% below nominal.
(4) I
GND
(MAX) = 3 mA includes the maximum 2 mA of I
BIAS
.
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