ISL78208 Datasheet, PDF (11/25 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)
LX1 5V/DIV
V_OUT1 RIPPLE 20mV/DIV
IL1 0.2A/DIV
LX2 5V/DIV
V_OUT2 RIPPLE 20mV/DIV
IL2 0.1A/DIV
FIGURE 16. STEADY STATE OPERATION AT NO LOAD CHANNEL 1
(V_IN = 9V)
FIGURE 17. STEADY STATE OPERATION AT NO LOAD CHANNEL 2
LX1 5V/DIV
LX2 5V/DIV
V_OUT1 RIPPLE 20mV/DIV
IL1 1A/DIV
V_OUT2 RIPPLE 20mV/DIV
IL2 1A/DIV
FIGURE 18. STEADY STATE OPERATION WITH FULL LOAD CHANNEL 1
FIGURE 19. STEADY STATE OPERATION WITH FULL LOAD CHANNEL 2
LX2 10V/DIV
V_OUT RIPPLE 20mV/DIV
LX1 10V/DIV
FIGURE 20. STEADY STATE OPERATION WITH FULL LOAD CURRENT
SHARING
11
V_OUT1 RIPPLE 20mV/DIV
IL1 2A/DIV
FIGURE 21. LOAD TRANSIENT CHANNEL 1
FN8354.0
July 12, 2013