ISL8033AIRZ Intersil, ISL8033AIRZ Datasheet - Page 2

• Manufacturer Part Number: ISL8033AIRZ
• Description: IC REG SYNC BUCK DUAL 3A 24QFN
• Manufacturer: Intersil
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of ISL8033AIRZ

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 V ~ 6 V
• Current - Output: 3A
• Frequency - Switching: 2.5MHz
• Voltage - Input: 2.85 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Application Circuit
NOTE: The minimum output capacitor value is given for different output voltage to make sure the whole converter system is stable. Output capacitance
should increase to support faster load transient requirement.
R2 (or R5)
R3 (or R6)
R2 (or R5)
R3 (or R6)
C2 (or C4)
C3 (or C5)
C2 (or C4)
C3 (or C5)
L1 (or L2)
L1 (or L2)
PART NUMBER
V
V
C1
C1
OUT
OUT
ISL8033A
ISL8033
INPUT 2.85V TO 6V
2x22µF
1.0µH~2.2µH
C1
0.47~1.5µH
2x22µF
2x22µF
2x22µF
2x22µF
Internally fixed switching frequency F
Internally fixed switching frequency F
12pF
100k
12pF
100k
0.8V
0.8V
0
0
2
FIGURE 2. TYPICAL APPLICATION DIAGRAM - DUAL INDEPENDENT OUTPUTS
1.0µH~2.2µH
0.47~1.5µH
2x22µF
2x22µF
2x22µF
2x22µF
12pF
100k
12pF
100k
1.2V
1.2V
50k
50k
TABLE 2. ISL8033A COMPONENT VALUE SELECTION
TABLE 1. ISL8033 COMPONENT VALUE SELECTION
ISL8033, ISL8033A
TABLE 3. SUMMARY OF DIFFERENCES
VIN1, 2
VDD
ISET
EN1
PG1
SYNC
EN2
PG2
SW
SW
1.0µH~2.2µH
= 1MHz
= 2.5MHz
0.47~1.5µH
ISL8033
2x22µF
2x22µF
2x22µF
2x22µF
87.5k
87.5k
12pF
100k
12pF
100k
1.5V
1.5V
SWITCHING FREQUENCY
PGND
SGND
PGND
SGND
LX1
FB1
LX2
FB2
1.0µH~3.3µH
0.47~1.5µH
2x22µF
2x22µF
2x22µF
2x22µF
12pF
124k
100k
12pF
124k
100k
1.8V
1.8V
1.5µH
1.5µH
L1
2x22µF
L2
2x22µF
C2
C4
100k
100k
R3
R6
124k
124k
R2
R5
1.0µH~3.3µH
1.0~2.2µH
2x22µF
2x22µF
2x22µF
2x22µF
212.5k
212.5k
OUTPUT1
OUTPUT2
12pF
100k
12pF
100k
2.5V
2.5V
1.8V/3A
1.8V/3A
12pF
12pF
C3
C5
1.0µH~4.7µH
1.0~3.3µH
2x22µF
2x22µF
2x22µF
2x22µF
312.5k
312.5k
March 24, 2011
12pF
100k
12pF
100k
3.3V
3.3V
FN6854.2