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International Rectifier Electronic Components Datasheet

IR3505 Datasheet

PHASE

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IR3505
DATA SHEET
XPHASE3TM PHASE IC
DESCRIPTION
The IR3505 Phase IC combined with an IR XPhase3TM Control IC provides a full featured and flexible way to
implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides
overall system control and interfaces with any number of “Phase” ICs which each drive and monitor a single
phase of a multiphase converter. The XPhase3TM architecture results in a power supply that is smaller, less
expensive, and easier to design while providing higher efficiency than conventional approaches.
FEATURES
7V/2A gate drivers (4A GATEL sink current)
Support converter output voltage up to 5.1 V (Limited to VCCL-1.4V)
Support loss-less inductor current sensing
Feed-forward voltage mode control
Integrated boot-strap synchronous PFET
Only four IC related external components per phase
3 wire analog bus connects Control and Phase ICs (VDAC, Error Amp, ISHARE)
3 wire digital bus for accurate daisy-chain phase timing control without external components
Debugging function isolates phase IC from the converter
Self-calibration of PWM ramp, current sense amplifier, and current share amplifier
Single-wire bidirectional average current sharing
Small thermally enhanced 16L 3 x 3mm MLPQ package
RoHS compliant
APPLICATION CIRCUIT
12V
www.DataSheet4U.com
CCS
RCS
6 Wire
Bus to
Control
IC
1 ISHARE
SW 12
2
3
IR3505
DACIN
GATEH
PHASE
LGND IC
BOOST
11
10
CBST
4 PHSIN
VCCL 9
VCCL
Page 1 of 19
CVCCL
CIN
L
VOUT+
COUT
VOUT-
Mar 04th, 2008


International Rectifier Electronic Components Datasheet

IR3505 Datasheet

PHASE

No Preview Available !

IR3505
ORDERING INFORMATION
Part Number
IR3505MTRPBF
* IR3505MPBF
* Samples only
Package
16 Lead MLPQ
(3 x 3 mm body)
16 Lead MLPQ
(3 x 3 mm body)
Order Quantity
3000 per reel
100 piece strips
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed below may cause permanent damage to the device. These are stress ratings only
and functional operation of the device at these or any other conditions beyond those indicated in the operational
sections of the specifications are not implied.
Operating Junction Temperature…………….. 0oC to 150oC
Storage Temperature Range………………….-65oC to 150oC
MSL Rating………………………………………2
Reflow Temperature…………………………….260oC
PIN #
1
2
3
4
5
6
www.DataSheet4U.7com
8
9
PIN NAME
ISHARE
DACIN
LGND
PHSIN
PHSOUT
CLKIN
PGND
GATEL
VCCL
VMAX
8V
3.3V
n/a
8V
8V
8V
0.3V
8V
8V
10 BOOST
34V
11 GATEH
34V
12 SW
13 VCC
14 CSIN+
15 CSIN-
16 EAIN
34V
18V
8V
8V
8V
Note:
1. Maximum GATEH – SW = 8V
2. Maximum BOOST – GATEH = 8V
Page 2 of 19
VMIN
-0.3V
-0.3V
n/a
-0.3V
-0.3V
-0.3V
-0.3V
-0.3V DC, -5V for
100ns
-0.3V
-0.3V
-0.3V DC, -5V for
100ns
-0.3V DC, -5V for
100ns
-0.3V
-0.3V
-0.3V
-0.3V
ISOURCE
1mA
1mA
n/a
1mA
2mA
1mA
5A for 100ns,
200mA DC
5A for 100ns,
200mA DC
n/a
1A for 100ns,
100mA DC
3A for 100ns,
100mA DC
3A for 100ns,
100mA DC
n/a
1mA
1mA
1mA
ISINK
1mA
1mA
n/a
1mA
2mA
1mA
n/a
5A for 100ns,
200mA DC
5A for 100ns,
200mA DC
3A for 100ns,
100mA DC
3A for 100ns,
100mA DC
n/a
10mA
1mA
1mA
1mA
Mar 04th, 2008


Part Number IR3505
Description PHASE
Maker International Rectifier
PDF Download

IR3505 Datasheet PDF






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