Datasheet

TPS735xx
SBVS087K –JUNE 2008–REVISED AUGUST 2013 www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= –40°C to +125°C), V
IN
= V
OUT(TYP)
+ 0.5V or 2.7V, whichever is greater; I
OUT
= 1mA,
V
EN
= V
IN
, C
OUT
= 2.2μF, C
NR
= 0.01μF, unless otherwise noted. For TPS73501, V
OUT
= 3.0V.
Typical values are at T
J
= +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range
(1)
2.7 6.5 V
V
FB
Internal reference (TPS73501) 1.184 1.208 1.232 V
V
OUT
Output voltage range (TPS73501) V
FB
6.0 V
V
OUT
Output accuracy Nominal T
J
= +25°C –1.0 +1.0 %
V
OUT
+ 0.3V ≤ V
IN
≤ V
OUT
> 6.5V
DRB
–2.0 ±1.0 +2.0 %
1mA ≤ I
OUT
≤ 500mA, V
OUT
> 2.2V
package
over V
IN
,
V
OUT
+ 0.3V ≤ V
IN
≤ 6.5V
–3.0 ±1.0 +3.0 %
I
OUT
, Temp
1mA ≤ I
OUT
≤ 500mA, V
OUT
≤ 2.2V
V
OUT
+ 0.3V ≤ V
IN
≤ V
OUT
+ 3.0V,
V
OUT
Output accuracy
(1)
V
IN
≤ 6.5V –2.0 ±1.0 +2.0 %
DRV
1mA ≤ I
OUT
≤ 500mA, V
OUT
> 2.2V
package
over V
IN
,
V
OUT
+ 0.3V ≤ V
IN
≤ V
OUT
+ 3.0V,
I
OUT
, Temp
V
IN
≤ 6.5V –3.0 ±1.0 +3.0 %
1mA ≤ I
OUT
≤ 500mA, V
OUT
≤ 2.2V
ΔV
OUT
%/ ΔV
IN
Line regulation
(1)
V
OUT(NOM)
+ 0.3V ≤ V
IN
≤ 6.5V 0.02 %/V
ΔV
OUT
%/ ΔI
OUT
Load regulation 500μA ≤ I
OUT
≤ 500mA 0.005 %/mA
Dropout voltage
(2)
V
DO
I
OUT
= 500mA 280 500 mV
(V
IN
= V
OUT(NOM)
– 0.1V)
V
OUT
= 0.9 × V
OUT(NOM)
I
CL
Output current limit V
IN
= V
OUT(NOM)
+ 0.9V, 800 1170 1720 mA
V
IN
≥ 2.7V
I
GND
Ground pin current 500μA ≤ I
OUT
≤ 500mA 45 65 μA
I
SHDN
Shutdown current (I
GND
) V
EN
≤ 0.4V 0.15 1.0 μA
I
FB
Feedback pin current (TPS73501) –0.5 0.5 μA
f = 100Hz 60 dB
Power-supply rejection ratio
f = 1kHz 56 dB
PSRR V
IN
= 3.85V, V
OUT
= 2.85V,
f = 10kHz 41 dB
C
NR
= 0.01μF, I
OUT
= 100mA
f = 100kHz 28 dB
C
NR
= 0.01μF 11 x V
OUT
μV
RMS
Output noise voltage
V
N
BW = 10Hz to 100kHz, V
OUT
= 2.8V
C
NR
= none 95 x V
OUT
μV
RMS
C
NR
= none 45 μs
Startup time, V
OUT
= 0% to
C
NR
= 0.001μF 45 μs
90%
T
STR
V
OUT
= 2.85V,
C
NR
= 0.01μF 50 μs
R
L
= 14Ω, C
OUT
= 2.2μF
C
NR
= 0.047μF 50 μs
V
EN(HI)
Enable high (enabled) 1.2 V
IN
V
V
EN(LO)
Enable low (shutdown) 0 0.4 V
I
EN(HI)
Enable pin current, enabled V
EN
= V
IN
= 6.5V 0.03 1.0 μA
Shutdown, temperature increasing 165 °C
T
SD
Thermal shutdown temperature
Reset, temperature decreasing 145 °C
T
J
Operating junction temperature –40 +125 °C
Under-voltage lock-out V
IN
rising 1.90 2.20 2.65 V
UVLO
Hysteresis V
IN
falling 70 mV
(1) Minimum V
IN
= V
OUT
+ V
DO
or 2.7V, whichever is greater.
(2) V
DO
is not measured for devices with V
OUT(NOM)
< 2.8V because minimum V
IN
= 2.7V.
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