Datasheet
ELECTRICAL CHARACTERISTICS
TPS717xx
www.ti.com
.................................................................................................................................................. SBVS068G – FEBRUARY 2006 – REVISED APRIL 2009
Over operating temperature range (T
J
= – 40 ° C to +125 ° C), V
IN
= V
OUT(TYP)
+ 0.5V or 2.5V, whichever is greater;
I
OUT
= 0.5mA, V
EN
= V
IN
, C
OUT
= 1.0 µ F, C
NR
= 0.01 µ F, unless otherwise noted. For TPS71701, V
OUT
= 2.8V.
Typical values are at T
J
= +25 ° C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range
(1)
2.5 6.5 V
V
FB
Internal reference (TPS71701) 0.790 0.800 0.810 V
Output voltage range (TPS717xx) 0.9 5.0 V
V
OUT
Output voltage range (TPS71701) 0.9 6.5 – V
DO
V
Output accuracy Nominal T
J
= +25 ° C ± 2.5 mV
Output accuracy Over V
IN
, I
OUT
, V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V
– 30 +30 mV
V
OUT
(V
OUT
< 1.0V) Temp
(2)
0mA ≤ I
OUT
≤ 150mA
Output accuracy Over V
IN
, I
OUT
, V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V
– 3.0 +3.0 %
(V
OUT
≥ 1.0V) Temp
(2)
0mA ≤ I
OUT
≤ 150mA
V
OUT(NOM)
+ 0.5V ≤ V
IN
≤ 6.5V,
Δ V
OUT
/ Δ V
IN
Line regulation
(1)
125 µ V/V
I
OUT
= 5mA
Δ V
OUT
/ Δ I
OUT
Load regulation 0mA ≤ I
OUT
≤ 150mA 120 µ V/mA
Dropout voltage
(3)
V
DO
I
OUT
= 150mA 170 300 mV
(V
IN
= V
OUT(NOM)
– 0.1V)
I
CL
(Fixed) Output current limit (fixed output) V
OUT
= 0.9 × V
OUT(NOM)
200 325 575 mA
I
CL
(Adjustable) Output current limit (TPS71701) V
OUT
= 0.9 × V
OUT(NOM)
200 325 575 mA
I
OUT
= 0.1mA 45 80 µ A
I
GND
Ground pin current
I
OUT
= 150mA 100 µ A
V
EN
≤ 0.4V, 2.5V ≤ V
IN
< 4.5V,
0.20 1.5 µ A
T
J
= – 40 ° C to +85 ° C
Shutdown current
I
SHDN
(I
GND
)
V
EN
≤ 0.4V, 4.5V ≤ V
IN
≤ 6.5V,
0.90 µ A
T
J
= – 40 ° C to +85 ° C
I
FB
Feedback pin current (TPS71701) 0.02 1.0 µ A
f = 100Hz 70 dB
f = 1kHz 70 dB
Power-supply rejection ratio
PSRR V
IN
= 3.8V, V
OUT
= 2.8V, f = 10kHz 67 dB
I
OUT
= 150mA
f = 100kHz 67 dB
f = 1MHz 45 dB
C
NR
= none
95 × V
OUT
µ V
RMS
(fixed output, TPS71701)
Output noise voltage
BW = 100Hz to 100kHz,
C
NR
= 0.001 µ F 25 × V
OUT
µ V
RMS
V
N
V
IN
= 3.8V, V
OUT
= 2.8V,
C
NR
= 0.01 µ F 12.5 × V
OUT
µ V
RMS
I
OUT
= 10mA
C
NR
= 0.1 µ F 11.5 × V
OUT
µ V
RMS
Startup time 0.9V ≤ V
OUT
≤ 1.6V, C
NR
= 0.001 µ F 0.700 ms
T
STR
V
OUT
= 90% V
OUT(NOM)
,
1.6V < V
OUT
< V
MAX
, C
NR
= 0.01 µ F 0.160 ms
R
L
= 19 Ω , C
OUT
= 1.0 µ F
V
IN
≤ 5.5V 1.2 6.5
(4)
V
V
EN(HI)
Enable high (enabled)
5.5V < V
IN
≤ 6.5V 1.25 6.5 V
V
EN(LO)
Enable low (shutdown) 0 0.4 V
I
EN(HI)
Enable pin current, enabled EN = 6.5V 0.02 1.0 µ A
Under-voltage lockout V
IN
rising 2.41 2.45 2.49 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 2.5V, whichever is greater.
(2) Does not include external resistor tolerances.
(3) V
DO
is not measured for devices with V
OUT(NOM)
< 2.6V because minimum V
IN
= 2.5V.
(4) Maximum V
EN(HI)
= V
IN
+ 0.3 or 6.5V, whichever is smaller.
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