IR3621F International Rectifier, IR3621F Datasheet - Page 27

• Manufacturer Part Number: IR3621F
• Description: IC PWM DUAL SYNC PREBIAS 28TSSOP
• Manufacturer: International Rectifier

Specifications of IR3621F

• Pwm Type: Voltage Mode
• Number Of Outputs: 2
• Frequency - Max: 345kHz
• Duty Cycle: 86.5%
• Voltage - Supply: 5.5 V ~ 14.5 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-TSSOP
• Frequency-max: 345kHz
• Package: 28-Pin TSSOP
• Circuit: Dual Sync PWM Controller or 2Phase Single Output
• Vcc (min): 4.7
• Vcc (max): 16
• Vout (min): 0.8
• Vout (max): Vcc * 0.90
• Switch Freq (khz): programmable to 500kHz
• Pbf: PbF Option Available
• For Use With: IRDC3621 - BOARD EVAL DUAL SYNC BUCK CTRLR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL PERFORMANCE CURVES
Test Conditions:
V
Unless otherwise specified.
IN
=12V, V
OUT1
90
85
80
75
70
65
60
55
50
45
Figure 40 - Efficiency for 2.5V and 1.8V outputs at room temperature and no air flow.
=2.5V, I
0
Efficiency was measured when the other output was operating at no load.
OUT1
2
=0-10A, V
4
OUT2
=1.8V, I
12V to 2.5V and 1.8V
6
OUT2
Io(A)
www.irf.com
8
=0-10A, Fs=400kHz, Ta=Room Temp, No Air Flow
10
12
14
IR3621 & (PbF)
16
2.5V
1.8V
27