Datasheet

TPS795xx
SLVS350H –OCTOBER 2002–REVISED AUGUST 2010 www.ti.com
ELECTRICAL CHARACTERISTICS
Over recommended operating temperature range (T
J
= –40°C to +125°C), V
EN
= V
IN
, V
IN
= V
OUT(nom)
+ 1 V
(1)
, I
OUT
= 1 mA,
C
OUT
= 10 mF, C
NR
= 0.01 mF, unless otherwise noted. Typical values are at +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Input voltage, V
IN
(1)
2.7 5.5 V
Internal reference, V
FB
(TPS79501) 1.200 1.225 1.250 V
Continuous output current, I
OUT
0 500 mA
Output voltage range TPS79501 1.225 5.5 – V
DO
V
Output
TPS79501
(2)
0 mA ≤ I
OUT
≤ 500 mA, V
OUT
+ 1 V ≤ V
IN
≤ 5.5 V
(1)
0.98(V
OUT
) V
OUT
1.02(V
OUT
) V
voltage
Accuracy
Fixed V
OUT
0 mA ≤ I
OUT
≤ 500 mA, V
OUT
+ 1 V ≤ V
IN
≤ 5.5 V
(1)
–2.0 +2.0 %
Output voltage line regulation (ΔV
OUT
%/ΔV
IN
)
(1)
V
OUT
+ 1 V ≤ V
IN
≤ 5.5 V 0.05 0.12 %/V
Load regulation (ΔV
OUT
%/ΔI
OUT
) 0 mA ≤ I
OUT
≤ 500 mA, 3 mV
TPS79530 I
OUT
= 500 mA 110 170
Dropout voltage
(3)
mV
V
IN
= V
OUT(nom)
- 0.1 V
TPS79533 I
OUT
= 500 mA 105 160
Output current limit V
OUT
= 0 V 2.4 2.8 4.2 A
Ground pin current 0 mA ≤ I
OUT
≤ 500 mA 265 385 mA
Shutdown current
(4)
V
EN
= 0 V, 2.7 V ≤ V
IN
≤ 5.5 V 0.07 1 mA
FB pin current V
FB
= 1.225 V 1 mA
f = 100 Hz, I
OUT
= 10 mA 59
f = 100 Hz, I
OUT
= 500 mA 58
Power-supply ripple rejection TPS79530 dB
f = 10 kHz, I
OUT
= 500 mA 50
f = 100 kHz, I
OUT
= 500 mA 39
C
NR
= 0.001 mF 46
C
NR
= 0.0047 µF 41
BW = 100 Hz to 100 kHz,
Output noise voltage (TPS79530) mV
RMS
I
OUT
= 500 mA
C
NR
= 0.01 mF 35
C
NR
= 0.1 mF 33
C
NR
= 0.001 mF 50
Time, start-up (TPS79530) R
L
= 6 Ω, C
OUT
= 1 µF C
NR
= 0.0047 mF 75 ms
C
NR
= 0.01 mF 110
High-level enable input voltage 2.7 V ≤ V
IN
≤ 5.5 V 1.7 V
IN
V
Low-level enable input voltage 2.7 V ≤ V
IN
≤ 5.5 V 0.7 V
EN pin current V
EN
= 0 V 1 1 mA
UVLO threshold V
CC
rising 2.25 2.65 V
UVLO hysteresis 100 mV
(1) Minimum V
IN
is 2.7 V or V
OUT
+ V
DO
, whichever is greater.
(2) Tolerance of external resistors not included in this specification.
(3) Dropout is not measured for the TPS79501 and TPS79525 since minimum V
IN
= 2.7 V.
(4) For adjustable version, this applies only after V
IN
is applied; then V
EN
transitions high to low.
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