Datasheet

TPS796
SLVS351O –SEPTEMBER 2002–REVISED NOVEMBER 2013 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
= 1mA,
C
OUT
= 10μF, and C
NR
= 0.01μF, unless otherwise noted. Typical values are at +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage
(1)
2.7 5.5 V
V
FB
Internal reference (TPS79601) 1.200 1.225 1.250 V
I
OUT
Continuous output current 0 1 A
Output
TPS79601 1.225 5.5 – V
DD
V
voltage range
TPS79601
(2)
0μA ≤ I
OUT
≤ 1A, V
OUT
+ 1V ≤ V
IN
≤ 5.5V
(1)
0.98V
OUT
V
OUT
1.02V
OUT
V
Output
Fixed
voltage
0μA ≤ I
OUT
≤ 1A, V
OUT
+ 1V ≤ V
IN
≤ 5.5V
(1)
–2.0 +2.0 %
Accuracy V
OUT
< 5V
Fixed
0μA ≤ I
OUT
≤ 1A, V
OUT
+ 1V ≤ V
IN
≤ 5.5V
(1)
–3.0 +3.0 %
V
OUT
= 5V
Output voltage line regulation
V
OUT
+ 1V ≤ V
IN
≤ 5.5V 0.05 0.12 %/V
(ΔV
OUT
%/V
IN
)
(1)
Load regulation (ΔV
OUT
%/ΔI
OUT
) 0μA ≤ I
OUT
≤ 1A 5 mV
TPS79628 I
OUT
= 1A 270 365
TPS79628DRB I
OUT
= 250mA 52 90
Dropout voltage
(3)
TPS79630 I
OUT
= 1A 250 345 mV
(V
IN
= V
OUT (nom)
– 0.1V)
TPS79633 I
OUT
= 1A 220 325
TPS79650 I
OUT
= 1A 200 300
Output current limit V
OUT
= 0V 2.4 4.2 A
Ground pin current 0μA ≤ I
OUT
≤ 1A 265 385 μA
Shutdown current
(4)
V
EN
= 0V, 2.7V ≤ V
IN
≤ 5.5V 0.07 1 μA
FB pin current V
FB
= 1.225V 1 μA
f = 100Hz, I
OUT
= 10mA 59
f = 100Hz, I
OUT
= 1A 54
Power-supply ripple
TPS79630 dB
rejection
f = 10kHz, I
OUT
= 1A 53
f = 100kHz, I
OUT
= 1A 42
C
NR
= 0.001μF 54
C
NR
= 0.0047μF 46
BW = 100Hz to 100kHz,
Output noise voltage (TPS79630) μV
RMS
I
OUT
= 1A
C
NR
= 0.01μF 41
C
NR
= 0.1μF 40
C
NR
= 0.001μF 50
Time, start-up (TPS79630) R
L
= 3Ω, C
OUT
= 1μF C
NR
= 0.0047μF 75 μs
C
NR
= 0.01μF 110
EN pin current V
EN
= 0V –1 1 μA
UVLO threshold V
CC
rising 2.25 2.65 V
UVLO hysteresis 100 mV
High-level enable input voltage 2.7V ≤ V
IN
≤ 5.5V 1.7 V
IN
V
Low-level enable input voltage 2.7V ≤ V
IN
≤ 5.5V 0 0.7 V
(1) Minimum V
IN
= V
OUT
+ V
DO
or 2.7V, whichever is greater. TPS79650 is tested at V
IN
= 5.5V.
(2) Tolerance of external resistors not included in this specification.
(3) V
DO
is not measured for TPS79618 and TPS79625 because minimum V
IN
= 2.7V.
(4) For adjustable version, this applies only after V
IN
is applied; then V
EN
transitions high to low.
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