IR3621F International Rectifier, IR3621F Datasheet - Page 4

• 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

IR3621 & (PbF)
Note 2: Guaranteed by design but not tested for production.
4
PARAMETER
V
Output Voltage
Output Current
Protection Section
OVP Trip Threshold
OVP Fault Prop Delay
OCSET Current
Hiccup Duty Cycle
Hiccup High Level Threshold
Hiccup Low Level Threshold
Thermal Shutdown Trip Point
Thermal Shutdown Hysteresis
Output Drivers Section
LO Drive Rise Time
HI Drive Rise Time
LO Drive Fall Time
Hi Drive Fall Time
Dead Band Time
OUT3
Internal Regulator
High Side Driver
Low Side Driver
(HDrv)
(LDrv)
Figure 2 - Rise Time, Fall Time and Deadband for Driver Section
9V
2V
9V
2V
Tr
Deadband
OVP
SYMBOL
H_to_L
OVP
I
T
T
T
T
OCSet
T
r(LO)
f(LO)
r(HI)
f(HI)
(delay)
DB
Tf
Output forced to 1.25V
Note2
Hiccup pin pulled high, Note2
Note2
Note2
Note2
Note2
C
C
C
C
See Figure 2
L
L
L
L
=1500pF,Figure 2
=1500pF, Figure 2
=1500pF,Figure 2
=1500pF,Figure 2
Tr
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TEST CONDITION
Tf
REF
Deadband
L_to_H
1.1
MIN
5.8
44
16
2
V
REF
1.15
TYP
6.25
140
20
20
18
18
25
25
50
5
V
REF
1.2
MAX
100
6.7
0.8
24
50
50
50
50
5
V
REF
UNITS
mA
µA
µs
ns
ns
ns
ns
ns
%
V
V
V
V
C
C