Datasheet

TPS797xx
www.ti.com SLVS332I –MARCH 2001–REVISED OCTOBER 2013
ELECTRICAL CHARACTERISTICS
Over operating temperature range T
J
= –40°C to +85°C, V
IN
= V
OUT
(typ) +0.5V or 2.0V, whichever is greater; I
OUT
= 0.5mA,
V
SET
, V
EN
= V
IN
, and C
OUT
= 1.0μF, unless otherwise noted. Typical values are at T
A
= +25°C.
TPS797xx
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
OUT
= 3mA 1.8 5.5
V
IN
Input voltage
(1)
V
I
OUT
= 10mA 2 5.5
I
OUT
Continuous output current
(2)
0 50 mA
V
OUT
+ 1V ≤ V
IN
≤ 5.5V
V
OUT
Output voltage accuracy
(3)
–4 4 %
1mA < I
OUT
< 10mA
ΔV
OUT
% /
Line regulation
(3)
V
OUT
+ 1V ≤ V
IN
≤ 5.5V 0.15 %/V
ΔV
IN
ΔV
OUT
% /
Load regulation 1μA < I
OUT
< 10mA 5 mV
ΔI
OUT
TPS79730 110 200
Dropout voltage
(4)
, I
OUT
= 10mA
V
DO
mV
V
IN
= V
OUT (NOM)
– 0.1V
TPS79733 105 200
I
SC
Output current limit V
OUT
= 0V 190 300 mA
I
GND
Ground pin current
(3)
I
OUT
= 10mA 1.2 2 μA
Power-supply rejection ratio f = 100Hz, C
OUT
= 10μF,
PSRR 50 dB
(ripple rejection) I
OUT
= 10mA
BW = 200kHz to 100kHz,
V
N
Output noise voltage (TPS79718) 600 μV
RMS
C
OUT
= 10μF, I
OUT
= 10mA
V
PG(MIN)
Minimum input voltage for valid PG V
(PG)
≥ 0.8V, I
PG
= 100μA 1.2 V
V
IT
PG trip threshold voltage V
OUT
increasing 90 %/V
OUT
V
IN
= 1.4V, I
PG
= 30μA, I
OUT
=
V
PG,LO
PG output low voltage 0.14 0.225 V
1mA
V
(PG)
= 5V, V
IN
= V
OUT
+ 1.0V,
I
PG,LKG
PG leakage current 0.1 nA
I
OUT
= 1mA
T
J
Operating junction temperature, T
J
–40 +85 °C
(1) Minimum V
IN
= V
OUT
+ V
DO
or the minimum value specified here, whichever is greater.
(2) Continuous output current is limited by internal protection circuitry, but it is not recommended that the device operate above this
maximum for extended periods of time.
(3) Minimum V
IN
is specified in note (1).
(4) V
DO
is not measured for the TPS79718 because minimum V
IN
> 1.7V.
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