ISL78208_14 Datasheet, PDF (13/24 Pages) Intersil Corporation – Wide VIN Dual Standard Buck Regulator with 3A/3A Continuous Output Current

ISL78208
Typical Performance Curves _TA
=
-40°C
to
+105°C,
unless
otherwise
noted.
Typical
values
Circuit of
are at T_A =
F+i2gu5r°eC2. .(CVo_{INnt=in1u2eVd,)}
V_OUT1
=
5V,
V_OUT2
=
3.3V,
I_OUT1
=
3A,
I_OUT2
=
3A,
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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FN8354.1
July 29, 2014