ISL85033IRTZ Intersil, ISL85033IRTZ Datasheet - Page 12

• Manufacturer Part Number: ISL85033IRTZ
• Description: IC REG BUCK ADJ DUAL 28TQFN
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of ISL85033IRTZ

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 28 V
• Current - Output: 3A
• Frequency - Switching: 300kHz ~ 2MHz
• Voltage - Input: 4.5 ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Typical Performance Curves
FIGURE 16. STEADY STATE OPERATION AT NO LOAD
FIGURE 18. STEADY STATE OPERATION WITH FULL
FIGURE 20. STEADY STATE OPERATION WITH FULL
V
LX1 5V/DIV
V
LX1 10V/DIV
LX2 10V/DIV
OUT1
OUT
RIPPLE 20mV/DIV
RIPPLE 20mV/DIV
CHANNEL 1 (V
LOAD CHANNEL 1
LOAD CURRENT SHARING
12
IN
V
= 9V)
OUT1
RIPPLE 20mV/DIV
LX1 5V/DIV
IL1 0.2A/DIV
IL1 1A/DIV
ISL85033
ISL85033
Circuit of Figure 2. V
I
values are at T
OUT2
= 3A, T
FIGURE 17. STEADY STATE OPERATION AT NO LOAD
FIGURE 19. STEADY STATE OPERATION WITH FULL
V
IL2 0.1A/DIV
LX2 5V/DIV
V
V
A
LX2 5V/DIV
OUT2
A
OUT2
OUT1
= -40°C to +85°C, unless otherwise noted. Typical
= +25°C. (Continued)
FIGURE 21. LOAD TRANSIENT CHANNEL 1
RIPPLE 20mV/DIV
RIPPLE 20mV/DIV
IN
RIPPLE 20mV/DIV
CHANNEL 2
LOAD CHANNEL 2
= 12V, V
OUT1
= 5V, V
OUT2
= 3.3V, I
IL1 2A/DIV
IL2 1A/DIV
December 8, 2010
OUT1
FN6676.2
= 3A,