ISL78208 Datasheet, PDF (13/25 Pages) Intersil Corporation – Wide VIN Dual Standard Buck Regulator with 3A/3A Continuous Output Current

ISL78208
Typical Performance Curves Circuit of Figure 2. V_IN = 12V, V_OUT1 = 5V, V_OUT2 = 3.3V, I_OUT1 = 3A, I_OUT2 = 3A,
T_A = -40°C to +105°C, unless otherwise noted. Typical values are at T_A = +25°C. (Continued)
EN2 5V/DIV
V_OUT2 0.5V/DIV
IL2 0.5A/DIV
PG 5V/DIV
V_OUT1 2V/DIV
V_OUT2 2V/DIV
EN1, 2, 5V/DIV
FIGURE 28. SHUTDOWN WITH NO LOAD CHANNEL 2
FIGURE 29. INDEPENDENT START-UP SEQUENCING AT NO LOAD
V_OUT1 2V/DIV
V_OUT2 2V/DIV
EN1, 2, 5V/DIV
FIGURE 30. RATIOMETRIC START-UP SEQUENCING AT NO LOAD
V_OUT1 2V/DIV
V_OUT2 2V/DIV
EN1, 2, 5V/DIV
FIGURE 31. ABSOLUTE START-UP SEQUENCING AT NO LOAD
LX1 10V/DIV
LX1 10V/DIV
V_OUT1 RIPPLE 20mV/DIV
LX2 10V/DIV
SYNC 5V/DIV
FIGURE 32. STEADY STATE OPERATION CHANNEL 1 AT FULL LOAD
WITH SYNC FREQUENCY = 4MHz
V_OUT2 RIPPLE 20mV/DIV
LX2 10V/DIV
SYNC 5V/DIV
FIGURE 33. STEADY STATE OPERATION CHANNEL 2 AT FULL LOAD
WITH SYNC FREQUENCY = 4MHz
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FN8354.0
July 12, 2013