6.3 Recommended Operating Conditions
over junction temperature range (unless otherwise noted)
|
MIN |
NOM |
MAX |
UNIT |
| VIN |
Input supply voltage range(1) |
1.1 |
|
6.5 |
V |
| VBIAS |
Bias supply voltage range(1) |
3.0 |
|
6.5 |
V |
| VEN |
Enable voltage range |
0 |
|
6.5 |
V |
| IOUT |
Output current |
0 |
|
3 |
A |
| CIN |
Input capacitor |
10 |
47 |
|
µF |
| COUT |
Output capacitor(2) |
47 |
47 || 10 || 10 |
|
µF |
| CBIAS |
Bias capacitor (3) |
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(4) |
|
12.1 |
|
kΩ |
| R2 |
Bottom resistor value in feedback network for adjustable operation(5) |
|
160 |
|
kΩ |
| TJ |
Operating junction temperature |
–40 |
|
150 |
°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) 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.
(3) If BIAS is used, a 10-µF capacitor is required. If BIAS is not used, a capacitor on the BIAS pin is not needed.
(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 provide accuracy by making the current through the feedback network much larger than the leakage current into the feedback node.