IR3621FTRPBF International Rectifier, IR3621FTRPBF Datasheet - Page 18
![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 APPLICATION
18
12V
PGood
C1
C10
12V input and two independent outputs using type 2 compensation.
C3
C8
C9
R2
C15
C5
C4
R3
R4
Figure 19 - Typical application of IR3621.
V
Vcc
V
V
Rt
Comp1
Hiccup
Comp2
PGood
SS2 / SD
SS1 / SD
CL
P2
REF
C12
VcH2
IR3621
VcH2
U1
V
OUT3
www.irf.com
OCSet1
OCSet2
PGnd2
PGnd1
HDrv2
HDrv1
LDrv2
LDrv1
V
V
VcH1
Sync
SEN2
Gnd
SEN1
Fb1
Fb2
V
V
SEN2
SEN1
R1
R6
C13
VcH2
Q2
Q3
Q4
Q5
C17
D2
V
C14
SEN2
C20
D1
V
SEN1
R23
R22
L4
L3
C11
R20
R21
C18
R9
R5
R7
R8
C16
2.5V @ 10A
1.8V @ 10A