ISL8014 Datasheet, PDF (11/16 Pages) Intersil Corporation – 4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator

ISL8014
Typical Operating Performance (Unless otherwise noted, operating conditions are: T_A = +25°C, V_VIN = 2.5V to 5.5V, EN = V_IN,
SYNCH = 0V, L = 1.5µH, C₁ = 2x22µF, C₂ = 2x22µF, I_OUT = 0A to 4A). (Continued)
EN 2V/DIV
EN 5V/DIV
V_OUT 0.5V/DIV
IL 2A/DIV
PG 5V/DIV
FIGURE 27. SOFT-START AT FULL LOAD
V_OUT 0.5V/DIV
IL 1A/DIV
PG 5V/DIV
FIGURE 28. SOFT-DISCHARGE SHUTDOWN
LX 2V/DIV
SYNCH 2V/DIV
V_OUT RIPPLE 20mV/DIV
IL 1A/DIV
FIGURE 29. STEADY STATE OPERATION AT NO LOAD WITH
FREQUENCY = 2MHz
LX 2V/DIV
IL 1A/DIV
SYNCH 2V/DIV
V_OUT RIPPLE 20mV/DIV
FIGURE 30. STEADY STATE OPERATION AT FULL LOAD
WITH FREQUENCY = 2MHz
LX 2V/DIV
SYNCH 2V/DIV
V_OUT RIPPLE 20mV/DIV
IL 0.5A/DIV
FIGURE 31. STEADY STATE OPERATION AT NO LOAD WITH
FREQUENCY = 4MHz
LX 2V/DIV
IL 1A/DIV
SYNCH 2V/DIV
V_OUT RIPPLE 20mV/DIV
FIGURE 32. STEADY STATE OPERATION AT FULL LOAD
(PWM) WITH FREQUENCY = 4MHz
11
FN6576.1
December 20, 2007