Datasheet

D DV ( V )
OUT IN
V
OUT(NOM)
D DV ( I )
OUT OUT
V
OUT(NOM)
TPS7A3401
www.ti.com SBVS163 –JUNE 2011
ELECTRICAL CHARACTERISTICS
(1)
At T
J
= –40°C to +125°C, |V
IN
| = |V
OUT(NOM)
| + 1.0 V or |V
IN
| = 3.0 V (whichever is greater), V
EN
= V
IN
, I
OUT
= 1 mA, C
IN
= 2.2 µF,
C
OUT
= 2.2 µF, and the FB pin tied to OUT, unless otherwise noted.
TPS7A3401
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range –20.0 –3.0 V
V
REF
Internal reference T
J
= +25°C, V
FB
= V
REF
–1.202 –1.184 –1.166 V
Output voltage range
(2)
|V
IN
| ≥ |V
OUT(NOM)
| + 1.0 V –18.0 V
REF
V
Nominal accuracy T
J
= +25°C, |V
IN
| = |V
OUT(NOM)
| + 0.5 V –1.5 +1.5 %V
OUT
V
OUT
|V
OUT(NOM)
| + 1.0 V ≤ |V
IN
| ≤ 20 V
Overall accuracy –2.5 +2.5 %V
OUT
1 mA ≤ I
OUT
≤ 200 mA
Line regulation T
J
= +25°C, |V
OUT(NOM)
| + 1.0 V ≤ |V
IN
| ≤ 20 V 0.14 %V
OUT
Load regulation T
J
= +25°C, 1 mA ≤ I
OUT
≤ 200 mA 0.04 %V
OUT
V
IN
= 95% V
OUT(NOM)
, I
OUT
= 100 mA 216 mV
|V
DO
| Dropout voltage
V
IN
= 95% V
OUT(NOM)
, I
OUT
= 200 mA 500 800 mV
I
LIM
Current limit V
OUT
= 90% V
OUT(NOM)
200 330 500 mA
I
OUT
= 0 mA 55 100 μA
I
GND
Ground current
I
OUT
= 100 mA 950 μA
V
EN
= +0.4 V 1.0 5.0 μA
|I
SHDN
| Shutdown supply current
V
EN
= –0.4 V 1.0 5.0 μA
I
FB
Feedback current
(3)
14 100 nA
V
EN
= |V
IN
| = |V
OUT(NOM)
| + 1.0 V 0.48 1.0 μA
|I
EN
| Enable current V
IN
= V
EN
= –20 V 0.51 1.0 μA
V
IN
= –20 V, V
EN
= +15 V 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
= –3 V, V
OUT(NOM)
= V
REF
, C
OUT
= 10 μF,
V
NOISE
Output noise voltage 80 μV
RMS
BW = 10 Hz to 100 kHz
V
IN
= –6.2 V, V
OUT(NOM)
= –5 V,
PSRR Power-supply rejection ratio 50 dB
C
OUT
= 10 μF, f = 1 kHz
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
≤ 0 V, V
OUT(NOM)
≤ V
REF
≤ 0 V. 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 5 μA is required.
(3) I
FB
> 0 flows into the device.
Copyright © 2011, Texas Instruments Incorporated 3