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ISL70003ASEH Datasheet, PDF (19/36 Pages) Intersil Corporation – Radiation and SEE Tolerant 3V to 13.2V, 9A Buck Regulator
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ISL70003ASEH
Typical Performance Curves Unless otherwise noted, Test platform is the ISL70003ASEHEV1Z where VIN = 12V,
VOUT = 3.3V, IOUT = 3A, fSW = 500kHz, CIN = 4x 100µF + 5x1µF, LOUT = 3.3µH, COUT = 1x 150µF + 1µF, TCASE = +25°C, All outputs active. (Continued)
545
6.00
500kHz
495
5.75
445
PVIN = 3V
PVIN = 13.2V
5.50
5.25
395
PVIN = 3V
345
295
245-60 -40 -20
PVIN = 13.2V
0 20 40 60 80
TEMPERATURE (°C)
100 120 140
5.00
4.75
300kHz
4.50
4.25
4.00 2
4
6
8
10
12
14
INPUT VOLTAGE (V)
FIGURE 30. SWITCHING FREQUENCY vs TEMPERATURE
FIGURE 31. MODULATOR GAIN vs VIN
ENABLE, 5V/DIV
LXx VOLTAGE, 5V/DIV
OUTPUT VOLTAGE, 2V/DIV
PGOOD, 10V/DIV
FIGURE 32. MONOTONIC SOFT-START WITH NO LOAD, CCM
ENABLE, 5V/DIV
INDUCTOR CURRENT, 2A/DIV
OUTPUT VOLTAGE, 2V/DIV
PGOOD, 10V/DIV
FIGURE 33. MONOTONIC SOFT-START WITH 6A LOAD, CCM
ENABLE, 5V/DIV
LXx VOLTAGE, 5V/DIV
ENABLE, 5V/DIV
LXx VOLTAGE, 5V/DIV
OUTPUT VOLTAGE, 2V/DIV
PGOOD, 10V/DIV
FIGURE 34. MONOTONIC SOFT-START WITH 1.5V PREBIASED LOAD
OUTPUT VOLTAGE, 2V/DIV
PGOOD, 10V/DIV
FIGURE 35. MONOTONIC SOFT-START WITH NO LOAD, DEM
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FN8746.0
August 5, 2015
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