Datasheet

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ELECTRICAL CHARACTERISTICS
TPS71319
TPS71334
SBVS055A – DECEMBER 2004 – REVISED JANUARY 2005
Over operating temperature range (T
J
= -40 ° C to +125 ° C), V
IN
= highest V
OUT(nom)
+ 1.0 V or 2.7 V (whichever is greater),
I
OUT
= 1 mA, V
EN1, 2
= 1.2 V, C
OUT
= 10 µF, C
NR
= 0.01 µF, and adjustable LDOs are tested at V
OUT
= 3.0 V, unless otherwise
noted. Typical values are at T
J
= 25 ° C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range
(1)
2.7 5.5 V
V
FB
Internal reference (adjustable LDOs) 1.200 1.225 1.250 V
Output voltage range
V
FB
5.5 - V
DO
V
(adjustable LDOs)
V
OUT
Nominal T
J
= 25 ° C, I
OUT
= 0 mA -1.5 +1.5
Accuracy
(1)
%
Over V
IN
, V
OUT
+ 1.0 V ≤ V
IN
≤ 5.5 V,
-3 ± 1 +3
I
OUT
, and T 0 µA ≤ I
OUT
≤ 250 mA
∆ V
OUT
%/ ∆ V
IN
Line regulation
(1)
V
OUT
+ 1.0 V ≤ V
IN
≤ 5.5 V 0.05 %/V
∆ V
OUT
%/ ∆ I
OUT
Load regulation 0 µA ≤ I
OUT
≤ 250 mA 0.8 %/mA
2.8 V,
Dropout voltage
(2)
V
DO
2.85 V I
OUT1
= I
OUT2
= 250 mA 125 230 mV
(V
IN
= V
OUT(nom)
- 0.1V)
Adjustable
I
CL
Output current limit V
OUT
= 0.9 × V
OUT(nom)
400 600 800 mA
One LDO
I
OUT
= 1 mA (enabled channel) 190 250
enabled
I
GND
Ground pin current µA
Both LDOs
I
OUT1
= I
OUT2
= 1 mA to 250 mA 300 600
enabled
V
EN
≤ 0.4 V, 0 V ≤ V
IN
≤ 5.5 V,
I
SHDN
Shutdown current
(3)
0.3 2.0 µA
RESET open
I
FB
FB pin current (adjustable LDOs) 0.1 1 µA
No C
NR
, I
OUT
= 250 mA 80.0 × V
OUT
Output noise voltage,
V
n
µVrms
BW = 10 Hz - 100 kHz
C
NR
= 0.01 µF, I
OUT
= 250 mA 11.8 × V
OUT
f = 100 Hz, I
OUT
= 250 mA 65
Power-supply rejection ratio
PSRR dB
(ripple rejection)
f = 10 kHz, I
OUT
= 250 mA 65
t
STR
Startup time V
OUT
= 2.85 V, R
L
= 30 Ω , C
NR
= 0.001 µF 60 µs
V
IH
Enable threshold high (EN1, EN2) 1.2 V
IN
V
V
IL
Enable threshold low (EN1, EN2) 0 0.4 V
I
EN
Enable pin current (EN1, EN2) V
IN
= V
EN
= 5.5 V -1 1 µA
Minimum V
IN
for valid RESET I
RESET
= 10 µA 0.6 V
V
RESET, LO
RESET output low voltage I
RESET
= 1 mA 0.4 V
I
LKG, RESET
RESET leakage current V
IN
= V
RESET
= 5.5 V 10 500 nA
V
IT
RESET threshold voltage V
OUT2
falling
(4)
92.5 97.5 %V
OUT
V
HYS
RESET threshold hysteresis V
OUT2
rising
(4)
0.5 %V
OUT
T
D
RESET delay time 50 100 200 ms
T
P
RESET propagation delay 10 µs
Shutdown Temp increasing +160
T
SD
Thermal shutdown temperature ° C
Reset Temp decreasing +140
Under-voltage lockout threshold V
IN
rising 2.25 2.65 V
UVLO
Under-voltage lockout hysteresis V
IN
falling 100 mV
(1) Minimum V
IN
= V
OUT
+ V
DO
or 2.7 V, whichever is greater.
(2) V
DO
is not measured for 1.8 V regulators since minimum V
IN
= 2.7 V.
(3) For the adjustable version, this applies only after V
IN
is applied; then V
EN
transitions from high to low.
(4) RESET threshold and hysteresis is a percentage of the measured output.
3