Datasheet

D DV ( I )
OUT OUT
V
OUT(NOM)
D DV ( V )
OUT IN
V
OUT(NOM)
TPS7A30xx
www.ti.com SBVS125B –AUGUST 2010–REVISED DECEMBER 2013
ELECTRICAL CHARACTERISTICS
(1)
At T
J
= –40°C to +125°C, |V
IN
| = |V
OUT(NOM)
| + 1.0V or |V
IN
| = 3.0V (whichever is greater), V
EN
= V
IN
, I
OUT
= 1mA, C
IN
= 2.2µF, C
OUT
= 2.2µF,
C
NR/SS
= 0nF, and the FB pin tied to OUT, unless otherwise noted.
TPS7A30xx
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range –35.0 –3.0 V
V
REF
Internal reference T
J
= +25°C, V
NR/SS
= V
REF
–1.202 –1.179 –1.166 V
Output voltage range
(2)
|V
IN
| ≥ |V
OUT(NOM)
| + 1.0V –33.0 V
REF
V
Nominal accuracy T
J
= +25°C, |V
IN
| = |V
OUT(NOM)
| + 0.5V –1.5 +1.5 %V
OUT
V
OUT
|V
OUT(NOM)
| + 1.0V ≤ |V
IN
| ≤ 35V
Overall accuracy –2.5 +2.5 %V
OUT
1mA ≤ I
OUT
≤ 200mA
Line regulation T
J
= +25°C, |V
OUT(NOM)
| + 1.0V ≤ |V
IN
| ≤ 35V 0.14 %V
OUT
Load regulation T
J
= +25°C, 1mA ≤ I
OUT
≤ 200mA 0.04 %V
OUT
V
IN
= 95% V
OUT(NOM)
, I
OUT
= 100mA 216 mV
|V
DO
| Dropout voltage
V
IN
= 95% V
OUT(NOM)
, I
OUT
= 200mA 325 600 mV
I
LIM
Current limit V
OUT
= 90% V
OUT(NOM)
220 330 500 mA
I
OUT
= 0mA 55 100 μA
I
GND
Ground current
I
OUT
= 100mA 950 μA
V
EN
= +0.4V 1.0 3.0 μA
|I
SHDN
| Shutdown supply current
V
EN
= –0.4V 1.0 3.0 μA
I
FB
Feedback current
(3)
14 100 nA
V
EN
= |V
IN
| = |V
OUT(NOM)
| + 1.0V 0.48 1.0 μA
|I
EN
| Enable current V
IN
= V
EN
= –35V 0.51 1.0 μA
V
IN
= –35V, V
EN
= +15V 0.50 1.0 μA
T
J
= –40°C to +125°C +2.0 +15 V
V
+EN_HI
Positive enable high-level voltage
T
J
= –40°C to +85°C +1.8 +15
V
+EN_LO
Positive enable low- level voltage 0 +0.4 V
V
–EN_HI
Negative enable high-level voltage V
IN
–2.0 V
V
–EN_LO
Negative enable low- level voltage –0.4 0 V
V
IN
= –3V, V
OUT(NOM)
= V
REF
, C
OUT
= 10μF,
15.1 μV
RMS
C
NR/SS
= 10nF, BW = 10Hz to 100kHz
V
NOISE
Output noise voltage
V
IN
= –6.2V, V
OUT(NOM)
= –5V, C
OUT
= 10μF,
C
NR/SS
= C
BYP
(4)
= 10nF, BW = 10Hz to 17.5 μV
RMS
100kHz
V
IN
= –6.2V, V
OUT(NOM)
= –5V, C
OUT
= 10μF,
PSRR Power-supply rejection ratio 72 dB
C
NR/SS
= C
BYP
(4)
= 10nF, f = 120Hz
Shutdown, temperature increasing +170 °C
T
SD
Thermal shutdown temperature
Reset, temperature decreasing +150 °C
Operating junction temperature
T
J
–40 +125 °C
range
(1) At operating conditions, V
IN
≤ 0V, V
OUT(NOM)
≤ V
REF
≤ 0V. At regulation, V
IN
≤ V
OUT(NOM)
– |V
DO
|. I
OUT
> 0 flows from OUT to IN.
(2) To ensure stability at no load conditions, a current from the feedback resistive network equal to or greater than 5μA is required.
(3) I
FB
> 0 flows into the device.
(4) C
BYP
refers to a bypass capacitor connected to the FB and OUT pins.
Copyright © 2010–2013, Texas Instruments Incorporated Submit Documentation Feedback 3