IRU3146CFTR International Rectifier, IRU3146CFTR Datasheet - Page 2

• Manufacturer Part Number: IRU3146CFTR
• Description: IC PWM DUAL SYNC 28-TSSOP
• Manufacturer: International Rectifier

Specifications of IRU3146CFTR

• Pwm Type: Voltage Mode
• Number Of Outputs: 2
• Frequency - Max: 345kHz
• Duty Cycle: 85%
• Voltage - Supply: 4.5 V ~ 16 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-TSSOP
• Frequency-max: 345kHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IRU3146
ABSOLUTE MAXIMUM RATINGS
Vcc, V
VcH1 and VcH2 Supply Voltage ................................
PGOOD................. ...................................................
Storage Temperature Range ...................................... -40°C To 125°C
Operating Junction Temperature Range ..................... -40°C To 125°C
Caution: Stresses above those listed in Absolute Maximum Ratings" may cause permanent damage to the device.
PACKAGE INFORMATION
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over Vcc=12V, VcH1=VcH2=V
Typical values refer to T
equal to the ambient temperature.
PARAMETER
Reference Voltage Section
Reference Voltage
Voltage Line Regulation
UVLO Section
UVLO Threshold - Vcc
UVLO Hysteresis - Vcc
UVLO Threshold - VcH1
UVLO Hysteresis - VcH1
UVLO Threshold - VcH2
UVLO Hysteresis - VcH2
Supply Current Section
Vcc Dynamic Supply Current
VcH1 & VcH2 Dynamic Current
V
Vcc Static Supply Current
VcH1/VcH2 Static Current
V
2
CL
CL
Dynamic Supply Current
Static Supply Current
CL
SS2 / SD
OCSet2
Comp2
PGood
PGnd2
Supply Voltage .............................................. -0.5V To 16V
HDrv2
LDrv2
V
V
VcH2
OUT3
SEN2
Fb2
V
V
CC
Rt
CL
28-PIN TSSOP (F)
10
12
14
11
13
1
2
3
4
5
6
7
8
9
θ
JA
= 84°C/W
A
=25°C. Low duty cycle pulse testing is used which keeps junction and case temperatures
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Gnd
V
Comp1
SS1 / SD
OCSet1
VcH1
HDrv1
PGnd1
LDrv1
V
Sync
Fb1
V
Hiccup
UVLO
UVLO
SEN1
REF
P2
UVLO
Dyn I
Dyn I
Dyn I
SYM
V
L
I
I
I
CCQ
CHQ
CLQ
REG
REF
V
V
V
CC
CH
CL
C
C
CC
H1
H2
5<Vcc<12
Supply Ramping Up
Ramp Up and Ramp Down
Supply Ramping Up
Ramp Up and Ramp Down
Supply Ramping Up
Ramp Up and Ramp Down
Freq=300KHz, C
Freq=300KHz, C
Freq=300KHz, C
SS=0V
SS=0V
SS=0V
www.irf.com
TEST CONDITION
-0.5V To 16V
-0.5V To 25V
L
L
L
=1500pF
=1500pF
=1500pF
0.789
MIN
3.9
3.2
3.2
CL
=12V and T
0.805
0.02
0.25
TYP
4.2
3.5
0.1
3.5
0.1
10
15
15
10
6
6
0.821
MAX
0.04
4.5
3.8
3.8
15
25
25
15
10
10
A
=0 to 70°C.
Rev. 1.1
UNITS
%/V
6/25/04
mA
mA
mA
mA
mA
mA
V
V
V
V
V
V
V