over junction temperature range (unless otherwise noted)
|
MIN |
NOM |
MAX |
UNIT |
| VIN
|
Input supply
voltage range |
1.1 |
|
6.5 |
V |
| VBIAS
|
Bias supply
voltage range(1)
|
3.0 |
|
6.5 |
V |
| VOUT
|
Output
voltage range (TPS7A8400A)(2)
|
0.8 |
|
5.15 |
V |
| VOUT
|
Output
voltage range (TPS7A8401A)(2)
|
0.5 |
|
5.15 |
V |
| VEN
|
Enable
voltage range |
0 |
|
VIN
|
V |
| IOUT
|
Output
current |
0 |
|
3 |
A |
| CIN
|
Input
capacitor |
10 |
47 |
|
μF |
| COUT
|
Output
capacitor |
47 |
47 || 10 ||
10(3)
|
|
μF |
| CBIAS
|
Bias pin
capacitor |
1 |
10 |
|
μF |
| RPG
|
Power-good
pullup resistance |
10 |
|
100 |
kΩ |
| CNR/SS
|
NR/SS
capacitor |
|
10 |
|
nF |
| CFF
|
Feed-forward
capacitor |
|
10 |
|
nF |
| R1
|
Top resistor
value in feedback network for adjustable operation |
|
12.1(4)
|
|
kΩ |
| R2
|
Bottom
resistor value in feedback network for adjustable operation |
|
|
160(5)
|
kΩ |
| TJ
|
Operating
junction temperature |
–40 |
|
125 |
°C |
(1) BIAS supply is required when the VIN supply is below 1.4 V.
Conversely, no BIAS supply is required when the VIN supply is higher than or
equal to 1.4 V. A BIAS supply helps improve dc and ac performance for VIN ≤
2.2 V.
(2) This output voltage range does not include device accuracy or accuracy
of the feedback resistors.
(3) The recommended output capacitors are selected to optimize PSRR for
the frequency range of 400 kHz to 700 kHz. This frequency range is a typical value for
dc-dc supplies.
(4) The 12.1-kΩ resistor is selected to optimize PSRR and noise by
matching the internal R1 value.
(5) The upper limit for the R2 resistor is to ensure accuracy
by making the current through the feedback network much larger than the leakage current
into the feedback node.