Datasheet

ELECTRICAL CHARACTERISTICS
TPS73719-Q1
TPS73733-Q1
www.ti.com ........................................................................................................................................................................................... SBVS123 – DECEMBER 2008
over operating temperature range (T
J
= – 40 ° C to 125 ° C), V
IN
= (V
OUT(nom)
+ 1.0 V)
(1)
, I
OUT
= 10 mA, V
EN
= 2.2 V, C
OUT
= 2.2 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)
2.2 5.5 V
V
FB
Internal reference (TPS73701) T
J
= 25 ° C 1.192 1.2 1.216 V
Output voltage range (TPS73701)
(3)
V
FB
5.5 – V
DO
V
Nominal T
J
= 25 ° C – 1.0 +1.0
5.36 V < V
IN
< 5.5 V, V
OUT
= 5.08 V,
10 mA < I
OUT
< 800 mA, – 2.0 +2.0
V
OUT
Accuracy
(1), (4)
– 40 ° C < T
J
< 85 ° C, TPS73701 %
Over V
IN
,
V
OUT
+ 0.5 V ≤ V
IN
≤ 5.5 V,
I
OUT
, and – 3.0 ± 0.5 +3.0
10 mA ≤ I
OUT
≤ 1 A
temperature
Δ V
OUT
%/
Line regulation
(1)
V
OUT(nom)
+ 0.5 V ≤ V
IN
≤ 5.5 V 0.01 %/V
Δ V
IN
1 mA ≤ I
OUT
≤ 1 A 0.002
Δ V
OUT
%/
Load regulation %/mA
Δ I
OUT
10 mA ≤ I
OUT
≤ 1 A 0.0005
Dropout voltage
(5)
V
DO
I
OUT
= 1 A 130 500 mV
(V
IN
= V
OUT(nom)
– 0.1 V)
Z
O
(DO) Output impedance in dropout 2.2 V ≤ V
IN
≤ V
OUT
+ V
DO
0.25 Ω
I
CL
Output current limit V
OUT
= 0.9 × V
OUT(nom)
1.05 1.6 2.2 A
I
SC
Short-circuit current V
OUT
= 0 V 450 mA
I
REV
Reverse leakage current
(6)
( – I
IN
) V
EN
≤ 0.5 V, 0 V ≤ V
IN
≤ V
OUT
0.1 µ A
I
OUT
= 10 mA (I
Q
) 400
I
GND
GND pin current µ A
I
OUT
= 1 A 1300
I
SHDN
Shutdown current (I
GND
) V
EN
≤ 0.5 V, V
OUT
≤ V
IN
≤ 5.5 V 20 nA
I
FB
FB pin current (TPS73701) 0.1 0.6 µ A
f = 100 Hz, I
OUT
= 1 A 58
Power-supply rejection ratio (ripple
PSRR dB
rejection)
f = 10 kHz, I
OUT
= 1 A 37
Output noise voltage
V
N
C
OUT
= 10 µ F 27 × V
OUT
µ V
RMS
BW = 10 Hz to 100 kHz
t
STR
Startup time V
OUT
= 3 V, R
L
= 30 Ω , C
OUT
= 1 µ F 600 µ s
V
EN(HI)
EN pin high (enabled) 1.7 V
IN
V
V
EN(LO)
EN pin low (shutdown) 0 0.5 V
I
EN(HI)
EN pin current (enabled) V
EN
= 5.5 V 20 nA
Shutdown, temperature increasing 160
T
SD
Thermal shutdown temperature ° C
Reset, temperature decreasing 140
T
J
Operating junction temperature – 40 125 ° C
(1) Minimum V
IN
= V
OUT
+ V
DO
or 2.2V, whichever is greater.
(2) For V
OUT(nom)
< 1.6 V, when V
IN
≤ 1.6 V, the output will lock to V
IN
and may result in an overvoltage condition on the output. To avoid
this situation, disable the device before powering down V
IN
.
(3) TPS73701 is tested at V
OUT
= 1.2 V.
(4) Tolerance of external resistors not included in this specification.
(5) V
DO
is not measured for fixed output versions with V
OUT(nom)
< 2.3 V, because minimum V
IN
= 2.2 V.
(6) Fixed-voltage versions only; see the Applications section for more information.
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