LM46000-Q1_15 Datasheet, PDF (13/50 Pages) Texas Instruments – SIMPLE SWITCHER 3.5 V to 60 V 0.5 A Synchronous Step-Down Voltage Converter

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LM46000-Q1
SNVSAA1A – JULY 2015 – REVISED AUGUST 2015
Typical Characteristics (continued)
Unless otherwise specified, V_IN = 24 V, V_OUT = 3.3 V, F_S = 500 kHz, L = 27 µH, C_OUT = 100 µF, C_FF = 33 pF. Please refer to
Application Performance Curves for Bill of Materials (BOM) for other V_OUT and F_S combinations.
2.0
70
1.8
60
1.6
1.4
50
1.2
40
1.0
0.8
30
0.6
0.4
0.2
0.0
-50
0
V_IN = 24 V
IL Peak Limit
IL Valley Limit
50
Temperature (SC)
V_OUT = 3.3 V
100
150
C001
F_S = 500 kHz
20
10
0
0
10
V_OUT = 3.3 V
20
30
40
VIN (V)
F_S = 500 kHz
50
60
C001
I_OUT = 0 A
Figure 31. Peak and Valley Current Limits vs Junction
Temperature
Figure 32. Operating I_Q vs V_IN with BIAS Connected to V_OUT
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