Datasheet

10 20 30 40 50 60 70 80 90 100
50
100
150
200
250
300
350
400
450
500
550
FREQUENCY (kHz)
VIN(V)
R
ON
=237k, V
OUT
=10V
30 40 50 60 70 80 90 100
30
40
50
60
70
80
90
100
EFFICIENCY (%)
LOAD CURRENT (mA)
VIN=13V VIN=24V
VIN=48V
VOUT=10V, fsw=450kHz
Performance Curves www.ti.com
6 Performance Curves
Figure 3. Efficiency vs Load Current
Figure 4. Frequency vs Input Voltage
Figure 5. Typical Switching Waveform (VIN=48V, Iout=100mA)
4
AN-2238 LM5019 Buck Evaluation Board SNVA647A–May 2012–Revised April 2013
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