Datasheet
ELECTRICAL CHARACTERISTICS
TPS734xx
www.ti.com
........................................................................................................................................ SBVS089F – DECEMBER 2007 – REVISED FEBRUARY 2009
Over operating temperature range (T
J
= – 40 ° C to +125 ° C), V
IN
= V
OUT(TYP)
+ 0.3V or 2.7V, whichever is greater; I
OUT
= 1mA,
V
EN
= V
IN
, C
OUT
= 2.2 µ F, C
NR
= 0.01 µ F, unless otherwise noted. For TPS73401, 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 (TPS73401) 1.184 1.208 1.232 V
V
OUT
Output voltage range (TPS73401) V
FB
6.3 V
V
OUT
Output accuracy Nominal T
J
= +25 ° C – 1.0 +1.0 %
Over V
IN
, V
OUT
+ 0.3V ≤ V
IN
≤ 6.5V
V
OUT
Output accuracy
(1)
– 2.0 ± 1.0 +2.0 %
I
OUT
, Temp 1mA ≤ I
OUT
≤ 250mA
Δ V
OUT
%/ Δ V
IN
Line regulation
(1)
V
OUT(NOM)
+ 0.3V ≤ V
IN
≤ 6.5V 0.02 %/V
Δ V
OUT
%/ Δ I
OUT
Load regulation 500 µ A ≤ I
OUT
≤ 250mA 0.005 %/mA
Dropout voltage
(2)
V
DO
I
OUT
= 250mA 125 219 mV
(V
IN
= V
OUT(NOM)
– 0.1V)
I
CL
Output current limit V
OUT
= 0.9 × V
OUT(NOM)
300 580 900 mA
I
GND
Ground pin current 500 µ A ≤ I
OUT
≤ 250mA 45 65 µ A
I
SHDN
Shutdown current (I
GND
) V
EN
≤ 0.4V 0.15 1.0 µ A
I
FB
Feedback pin current (TPS73401) – 0.5 0.5 µ A
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
= 0.01 µ F, I
OUT
= 100mA
f = 100kHz 28 dB
C
NR
= 0.01 µ F 11 x V
OUT
µ V
RMS
Output noise voltage
V
N
BW = 10Hz to 100kHz, V
OUT
= 2.8V
C
NR
= none 95 x V
OUT
µ V
RMS
C
NR
= none 45 µ s
Startup time,
C
NR
= 0.001 µ F 45 µ s
V
OUT
= 0 ~ 90%,
T
STR
V
OUT
= 2.85V,
C
NR
= 0.01 µ F 50 µ s
R
L
= 14 Ω , C
OUT
= 2.2 µ F
C
NR
= 0.047 µ F 50 µ s
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 µ A
Shutdown, temperature increasing 165 ° C
T
SD
Thermal shutdown temperature
Reset, temperature decreasing 145 ° C
T
J
Operating junction temperature – 40 +125 ° C
Undervoltage 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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