Datasheet

ELECTRICAL CHARACTERISTICS
TPS718xx
TPS719xx
www.ti.com ..................................................................................................................................................... SBVS088C – FEBRUARY 2007 – REVISED MAY 2008
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
= 0.5mA, V
EN1
= V
EN2
= V
IN
, C
OUT
= 1.0 µ F, 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 6.5 V
V
OUT1
, V
OUT2
Output voltage range 0.9 3.6 V
Nominal T
J
= +25 ° C ± 2.5 mV
V
OUT1
, V
OUT2
Output accuracy
Over V
IN
, I
OUT
, V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V
– 3.0 +3.0 %
Temp 0mA ≤ I
OUT
≤ 200mA
V
OUT(NOM)
+ 0.5V ≤ V
IN
≤ 6.5V,
Δ V
OUT
/ Δ V
IN
Line regulation 130 µ V/V
I
OUT
= 5mA
Δ V
OUT
/ Δ I
OUT
Load regulation 0mA ≤ I
OUT
≤ 200mA 75 µ V/mA
Dropout voltage
(2)
V
DO
I
OUT
= 200mA 230 400 mV
(V
IN
= V
OUT(NOM)
– 0.1V)
I
CL
Output current limit (per output) V
OUT
= 0.9 × V
OUT(NOM)
240 340 575 mA
I
OUT1
= I
OUT2
= 0.1mA 90 160 µ A
I
GND
Ground pin current
I
OUT1
= I
OUT2
= 200mA 250 µ A
V
EN1,2
≤ 0.4V, 2.7V ≤ V
IN
< 4.5V,
0.3 3.0 µ A
T
J
= – 40 ° C to +85 ° C
I
SHDN
Shutdown current (I
GND
)
V
EN1,2
≤ 0.4V, 4.5V ≤ V
IN
≤ 6.5V,
1.8 µ A
T
J
= – 40 ° C to +85 ° C
f = 100Hz 63 dB
f = 1kHz 63 dB
Power-supply rejection ratio
PSRR V
IN
= 3.8V, V
OUT
= 2.8V, f = 10kHz 72 dB
I
OUT
= 200mA
f = 100kHz 58 dB
f = 1MHz 44 dB
Output noise voltage
V
N
70 × V
OUT
µ V
RMS
BW = 100Hz to 100kHz
R
L
= 14 Ω , V
OUT
= 2.8V,
T
STR
Startup time
(3)
160 µ s
C
OUT
= 1.0 µ F
Shutdown time
(4)
,
(5)
R
L
= ∞ , C
OUT
= 1.0 µ F,
T
SHUT
180 µ s
(TPS719xx only) V
OUT
= 2.8V
V
IN
≤ 5.5V 1.2 6.5 V
Enable high (enabled)
V
EN(HI)
(EN1 and EN2)
5.5V < V
IN
≤ 6.5V 1.25 6.5 V
Enable low (shutdown)
V
EN(LO)
0 0.4 V
(EN1 and EN2)
Enable pin current, enabled
I
EN
EN1 = EN2 = 6.5V 0.04 1.0 µ A
(EN1 and EN2)
Undervoltage lockout V
IN
rising 2.38 2.45 2.52 V
UVLO
Hysteresis V
IN
falling 150 mV
Shutdown, temperature increasing +160 ° C
T
SD
Thermal shutdown temperature
Reset, temperature decreasing +140 ° C
T
J
Operating junction temperature – 40 +125 ° C
(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.
(3) Time from V
EN
= 1.25V to V
OUT
= 95% (V
OUT(NOM)
).
(4) Time from V
EN
= 0.4V to V
OUT
= 5% (V
OUT(NOM)
).
(5) See Shutdown section in the Applications Information for more details.
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