ISL8023 INTERSIL [Intersil Corporation], ISL8023 Datasheet - Page 12

• Manufacturer Part Number: ISL8023
• Description: 3A/4A Low Quiescent Current High Efficiency Synchronous Buck Regulator
• Manufacturer: INTERSIL [Intersil Corporation]

Typical Operating Performance for A Part
T
A
= +25°C, V
FIGURE 34. STEADY STATE OPERATION WITH FULL LOAD
FIGURE 36. SOFT-START AT NO LOAD (PFM)
VIN
= 5V, EN = V
V
IN
OUT
12
, SYNC = V
PHASE 2V/Div
I
RIPPLE 20mV/Div
L
2A/Div
IN
, L = 1.0µH, C
PG 5V/Div
V
FIGURE 38. SOFT-DISCHARGE SHUTDOWN
OUT
I
EN 2V/Div
L
1A/Div
ISL8023, ISL8024
I
PG 5V/Div
1V/Div
L
V
EN 2V/Div
OUT
1A/Div
1
= 22µF, C
1V/Div
2
= 2 x 22µF, I
OUT
FIGURE 35. SOFT-START WITH NO LOAD (PWM)
= 0A to 4A). (Continued)
FIGURE 37. SOFT-START AT FULL LOAD
Unless otherwise noted, operating conditions are:
PG 5V/Div
I
L
EN 2V/Div
V
1A/Div
OUT
PG 5V/Div
V
1V/Div
OUT
EN 2V/Div
I
L
December 22, 2011
1A/Div
1V/Div
FN7812.0