IR3523MTRPBF International Rectifier, IR3523MTRPBF Datasheet - Page 2

• Manufacturer Part Number: IR3523MTRPBF
• Description: IC XPHASE3 CTLR VR11.1 40-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase3™r

Specifications of IR3523MTRPBF

• Applications: Processor
• Current - Supply: 10mA
• Voltage - Supply: 4.75 V ~ 7.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 40-MLPQ
• Ic Function: Dual Output Control IC
• Supply Voltage Range: 4.75V To 7.5V
• Operating Temperature Range: 0°C To +150°C
• Digital Ic Case Style: MLPQ
• No. Of Pins: 40
• Controller Type: XPhase
• Rohs Compliant: Yes
• Package: 40-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 250kHz to 1.5MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

To Output 2
Remote
Sense
APPLICATION CIRCUIT
PIN DESCRIPTION
Page 2 of 37
11,20,30
PIN#
1-3
VOUT2 SENSE +
10
VOUT2 SENSE -
4
5
6
7
8
9
ENABLE 2
ENABLE 1
PG2
VID2_0
VID2_1
VID2_2
VID1_4
VID1_3
VID1_2
12V
VID1_3, VID1_2
PIN SYMBOL
ENABLE2
ENABLE1
SS/DEL2
OCSET2
EAOUT2
VID1_4,
VDAC2
IIN2
NC
CVDAC1
RCP2
CCP22
ROCSET2
CSS/DEL2
VID inputs for Output 1
Enable input. A logic low applied to this pin puts output 2 into fault mode. A
logic high signal on this pin enables output 2. Do not float as the logic state will
be undefined.
Enable input. A logic low applied to this pin puts output 2 into fault mode. A
logic high signal on this pin enables output 2. Do not float as the logic state will
be undefined.
Output 2 average current input from the output 2 phase IC(s). This pin is also
used to communicate over voltage condition to the output 2 phase ICs.
Programs output 2 startup and over current protection delay timing. Connect an
external capacitor to LGND to program.
Output 2 reference voltage. Connect an external RC network to LGND to
provide compensation for the internal buffer amplifier
Programs the output 2 constant converter output current limit and hiccup over-
current threshold through an external resistor tied to VDAC2 and an internal
current source from this pin. Over-current protection can be disabled by
connecting a resistor from this pin to VDAC2 to program the threshold higher
than the possible signal into the IIN pin from the phase ICs but no greater than
5V (do not float this pin as improper operation will occur).
Output 2 error amplifier output
No Connection
CCP21
RVDAC2
RVCCLDRV
10
1
2
3
4
5
6
7
8
9
Figure 1 – IR3523 Application Circuit
RFB22
VID1_4
VID1_3
VID1_2
ENABLE2
ENABLE1
IIN2
SS/DEL2
VDAC2
OCSET2
EAOUT2
RFB21
Q1
CFB2
RVCCLFB1
IR3523
CONTROL
IC
RVCCLFB2
CFB1
ROSC/OVP
RFB11
RFB13
SS/DEL1
OCSET1
EAOUT1
VDRP1
VDAC1
LGND
RFB12
PG1
IIN1
NC
PIN DESCRIPTION
30
29
28
27
26
25
24
23
22
21
CVCCL
4.7uF
ROCSET1
RVDAC1
RCP1
CDRP1
RDRP1
CCP12
CCP11
CSS/DEL1
CVDAC1
RTHERMISTOR1
June 20, 2008
ROSC
Load Line NTC
Thermistor; Locate
close to Output 1
Pow er Stage
12V
VCCL
PHSIN
PHSOUT
CLKOUT
PG1
OVP FLAG
ISHARE1
VDAC1
EAOUT1
VOUT1 SENSE +
VOUT1 SENSE -
EAOUT2
VREF2
ISHARE2
To Pow er Stage
To Phase IC
VCCL & GATE
DRIVE BIAS
IR3523
3 w ire Digital
Daisy Chain Bus
to Phase ICs
3 Wire Analog
Control Bus to
Output 1 Phase
ICs
3 Wire Analog
Control Bus to
Output 2 Phase
ICs
To Output 2
Remote Sense