IR3621FTRPBF International Rectifier, IR3621FTRPBF Datasheet - Page 24
![IC PWM DUAL SYNC PREBIAS 28TSSOP](/photos/7/54/75407/ir3621ftrpbf_sml.jpg)
IR3621FTRPBF
Manufacturer Part Number
IR3621FTRPBF
Description
IC PWM DUAL SYNC PREBIAS 28TSSOP
Manufacturer
International Rectifier
Datasheet
1.IR3621MTR.pdf
(29 pages)
Specifications of IR3621FTRPBF
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
Other names
IR3621FTRPBFTR
IR3621 & (PbF)
TYPICAL OPERATING WAVEFORMS
Test Conditions:
V
=12V, V
=2.5V, I
=0-10A, V
=1.8V, I
=0-10A, Fs=400kHz, Ta=Room Temp, No Air Flow
IN
OUT1
OUT1
OUT2
OUT2
Unless otherwise specified.
Figure 30 - 1.8V output shorted
Figure 29 - 2.5V Waveforms
Ch1: Vo1, Ch2: SS2, Ch3: Inductor Current
Ch1: Hdrv2, Ch2: Ldrv2, Ch3: Lx2, Ch4: Inductor Current
Figure 32 - Prebias Start up
Figure 31 - 2.5V output shorted
Ch1: SS1, Ch2: Vo1, Ch3: SS2, Ch4:Vo2
Ch1: Vo2, Ch2: SS1, Ch3: Inductor Current
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