ISL854102FRZ 查看數據表（PDF） - Renesas Electronics
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ISL854102FRZ Datasheet PDF : 19 Pages
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ISL854102
Efficiency Curves fSW = 500kHz, TA = +25°C (Continued)
3.450
3.430
3.410
3.390
VIN=12V
VIN=15V
VIN=24V
VIN=33V
3.370
3.350
3.330
3.310
3.290
3.270
3.250
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2
OUTPUT LOAD (A)
3.350
3.347
3.344
3.341
VIN=12V
VIN=15V
VIN=24V
VIN=33V
3.338
3.335
3.332
3.329
3.326
3.323
3.320
0
0.2
0.4
0.6
0.8
1
1.2
OUTPUT LOAD (A)
FIGURE 12. VOUT REGULATION vs LOAD, PFM, VOUT = 3.3V
FIGURE 13. VOUT REGULATION vs LOAD vs LOAD, PWM, VOUT = 3.3V
Measurements fSW = 500kHz, VIN = 24V, VOUT = 3.3V, TA = +25°C
LX 20V/DIV
VOUT 2V/DIV
LX 20V/DIV
VOUT 2V/DIV
EN 20V/DIV
PG 2V/DIV
5ms/DIV
FIGURE 14. START-UP AT NO LOAD, PFM
EN 20V/DIV
PG 2V/DIV
5ms/DIV
FIGURE 15. START-UP AT NO LOAD, PWM
LX 20V/DIV
VOUT 2V/DIV
EN 20V/DIV
PG 2V/DIV
100ms/DIV
FIGURE 16. SHUTDOWN AT NO LOAD, PFM
LX 20V/DIV
VOUT 2V/DIV
EN 20V/DIV
PG 2V/DIV
100ms/DIV
FIGURE 17. SHUTDOWN AT NO LOAD, PWM
FN8870 Rev 0.00
July 1, 2016
Page 9 of 19
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