Datasheet

TPS7A80xx
SBVS135H –JUNE 2010–REVISED JANUARY 2013 www.ti.com
ELECTRICAL CHARACTERISTICS
Over the operating temperature range of T
J
= –40°C to +125°C, V
IN
= V
OUT(TYP)
+ 0.5V or 2.2V (whichever is greater),
I
OUT
= 1mA, V
EN
= 2.2V, C
OUT
= 4.7μF, and C
NR
= 0.01μF, unless otherwise noted. TPS7A8001 is tested at
V
OUT
= 0.8V and V
OUT
= 6.0V. Typical values are at T
J
= +25°C.
TPS7A80xx
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range
(1)
2.2 6.5 V
V
NR
Internal reference 0.790 0.800 0.810 V
TPS7A80xx (fixed versions) 0.8 5.0 V
Output voltage range
TPS7A8001 (adjustable version) 0.8 6.0 V
V
OUT
+ 0.5V ≤ V
IN
≤ 6.0V, V
IN
≥ 2.5V,
V
OUT
-2.0 +2.0 %
100mA ≤ I
OUT
≤ 500mA, 0°C ≤ T
J
≤ 85°C
Output accuracy
(2)
V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V, V
IN
≥ 2.2V,
–3.0 ±0.3 +3.0 %
100mA ≤ I
OUT
≤ 1A
V
OUT(NOM)
+ 0.5V ≤ V
IN
≤ 6.5V, V
IN
≥ 2.2V,
ΔV
OUT
/ΔV
IN
Line regulation 150 μV/V
I
OUT
= 100mA
ΔV
OUT
/ΔI
OUT
Load regulation 100mA ≤ I
OUT
≤ 1A 2 μV/mA
V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V, V
IN
≥ 2.2V,
250 mV
I
OUT
= 500mA, V
FB
= GND or V
SNS
= GND
V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V, V
IN
≥ 2.5V,
V
DO
Dropout voltage
(3)
350 mV
I
OUT
= 750mA, V
FB
= GND or V
SNS
= GND
V
OUT
+ 0.5V ≤ V
IN
≤ 6.5V, V
IN
≥ 2.5V,
500 mV
I
OUT
= 1A, V
FB
= GND or V
SNS
= GND
I
CL
Output current limit V
OUT
= 0.85 × V
OUT(NOM)
, V
IN
≥ 3.3V 1100 1400 2000 mA
I
OUT
= 1mA 60 100 μA
I
GND
Ground pin current
I
OUT
= 1A 350 μA
I
SHDN
Shutdown current (I
GND
) V
EN
≤ 0.4V, V
IN
≥ 2.2V, R
L
= 1kΩ, 0°C ≤ T
J
≤ 85°C 0.20 2 μA
I
FB
Feedback pin current TPS7A8001 (adjustable), V
IN
= 6.5V, V
FB
= 0.8V 0.02 1.0 μA
I
SNS
Sense pin current TPS7A80xx (fixed), V
IN
= 6.5V, V
SNS
= V
OUT(NOM)
0.02 1.0 μA
f = 100Hz 48 dB
f = 1kHz 63 dB
V
IN
= 4.3V, V
OUT
= 3.3V,
PSRR Power-supply rejection ratio f = 10kHz 63 dB
I
OUT
= 750mA
f = 100kHz 57 dB
f = 1MHz 38 dB
C
NR
= 0.001μF 15.6 × V
OUT
μV
RMS
BW = 100Hz to 100kHz,
V
N
Output noise voltage V
IN
= 4.3V, V
OUT
= 3.3V, C
NR
= 0.01μF 15.6 × V
OUT
μV
RMS
I
OUT
= 100mA
C
NR
= 0.1μF 15.1 × V
OUT
μV
RMS
2.2V ≤ V
IN
≤ 3.6V, R
L
= 1kΩ 1.2 V
V
EN(HI)
Enable high (enabled)
3.6V < V
IN
≤ 6.5V, R
L
= 1kΩ 1.35 V
V
EN(LO)
Enable low (shutdown) R
L
= 1kΩ 0 0.4 V
I
EN(HI)
Enable pin current, enabled V
IN
= V
EN
= 6.5V 0.02 1.0 μA
V
OUT(NOM)
= 3.3V, C
NR
= 1nF 0.1 ms
t
STR
Startup time V
OUT
= 0% to 90% V
OUT(NOM)
,
C
NR
= 10nF 1.6 ms
R
L
= 3.3kΩ, C
OUT
= 4.7μF
Undervoltage lockout V
IN
rising, R
L
= 1kΩ 1.86 2 2.10 V
UVLO
Hysteresis V
IN
falling, R
L
= 1kΩ 75 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 2.2V, whichever is greater.
(2) As for TPS7A8001 (adjustable); it does not include external resistor tolerances and it is not tested at this condition: V
OUT
= 0.8V, 4.5V ≤
V
IN
≤ 6.5V, and 750mA ≤ I
OUT
≤ 1A because of power dissipation higher than maximum rating of the package.
(3) V
DO
is not measured for fixed output voltage devices with V
OUT
< 1.7V because minimum V
IN
= 2.2V.
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