The curves in this section were taken using
the LM5169P-Q1. Unless otherwise specified the
following conditions apply: TA = 25°C.
Figure 9-15 Efficiency: VOUT = 5
V
| VOUT = 24 V |
FSW = 500 kHz |
Figure 9-17 Efficiency: VOUT = 24
V
| VOUT = 12 V |
FSW = 500 kHz |
Figure 9-19 Line and Load Regulation:
VOUT = 12 V
| VIN = 48 V |
IOUT = 0 A to 0.6
A |
| TR = TF = 1
μs |
|
Figure 9-21 Load Transient: VOUT = 5
V
| VIN = 48 V |
IOUT = 0 A to 0.5
A |
| TR = TF = 1
μs |
|
Figure 9-23 Load Transient: VOUT = 12
V
| VIN = 36 V |
IOUT = 0 A to 0.6
A |
| TR = TF = 1
μs |
|
Figure 9-25 Load Transient: VOUT = 24
V
| VIN = 48 V |
VOUT = 5 V |
| IOUT = 600 mA |
FSW = 500 kHz |
Figure 9-27 Typical Switching Waveforms
| VIN = 48 V |
VOUT = 5 V |
| IOUT = 600 mA |
|
Figure 9-29 Typical Start-up WaveformsFigure 9-31 Drop-Out Response
| VOUT = 12
V |
FSW = 500
kHz |
Figure 9-16 Efficiency: VOUT = 12
VFigure 9-18 Line and Load Regulation:
VOUT = 5 V
| VOUT = 24 V |
FSW = 500 kHz |
Figure 9-20 Line and Load Regulation:
VOUT = 24 V
| VIN = 48 V |
IOUT = 0.1 A to 0.6
A |
| TR = TF = 1
μs |
|
Figure 9-22 Load Transient: VOUT = 5
V
| VIN = 48 V |
IOUT = 0.1 A to 0.5
A |
| TR = TF = 1
μs |
|
Figure 9-24 Load Transient: VOUT = 12
V
| VIN = 36 V |
IOUT = 0.1 A to 0.6
A |
| TR = TF = 1
μs |
|
Figure 9-26 Load Transient: VOUT = 24
V
| VIN = 48 V |
VOUT = 5 V |
| IOUT = 10 mA |
|
Figure 9-28 Typical Switching WaveformsFigure 9-30 No-Load Input Supply Current Figure 9-32 Drop-Out Response Table 9-4 BOM for Application Curves
| VOUT |
RA |
RFBB |
RFBT |
CA |
CB |
COUT |
L |
| 5 V |
121 kΩ |
143 kΩ |
453 kΩ |
3300 pF |
56 pF |
2x 22 μF |
68 μH, 0.17 Ω |
| 12 V |
182 kΩ |
49.9 kΩ |
453 kΩ |
3300 pF |
56 pF |
2x 22 μF |
68 μH, 0.17 Ω |
| 24 V |
243 kΩ |
23.7 kΩ |
453 kΩ |
3300 pF |
56 pF |
2x 22 μF |
68 μH, 0.17 Ω |