IRU3021MCWTR ,5 Bit Prog SynchBuck CIC w/3 LDO Controllers w/FET in a 28-Pin SOIC(WB) packageAPPLICATIONSTotal Power Solution for next generation Intelprocessor applicationTYPICAL APPLICATION5 ..
IRU3027 ,5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH TRIPLE LDO CONTROLLERAPPLICATIONSTotal power solution for next generation Intelprocessor applicationAMD K7 Low Cost Solu ..
IRU3027CW ,5 Bit Prog SynchBuck CIC with 3 LDO Controllers in a 28-Pin SOIC(WB) packagefeatures loss-less currentSoft-Start sensing for both switchers by using the RDS(ON) of theHigh cur ..
IRU3027CW ,5 Bit Prog SynchBuck CIC with 3 LDO Controllers in a 28-Pin SOIC(WB) packageapplications. The IRU3027 is designed toLinear Regulator Controller On-Board for 1.5V use either bi ..
IRU3027CWTR ,5 Bit Prog SynchBuck CIC with 3 LDO Controllers in a 28-Pin SOIC(WB) packageAPPLICATIONSTotal power solution for next generation Intelprocessor applicationAMD K7 Low Cost Solu ..
IRU3033 ,8-PIN PWM SWITCHER AND LINEAR CONTROLLER ICELECTRICAL SPECIFICATIONSUnless otherwise specified, the following specification applies over V12=V ..
IT8705AF , Simple Low Pin Count Input/Output (simple LPC I/O)
IT8712F , Environment Control -Low Pin Count Input / Output(EC - LPC I/O)
ITA18B1 ,BIDIRECTIONAL TRANSIL ARRAY FOR DATALINE PROTECTIONABSOLUTE MAXIMUM RATINGS (T = 25°C)ambSymbol Parameter Value UnitP Peak pulse power dissipation (8/ ..
ITA18B1RL ,BIDIRECTIONAL TRANSIL" ARRAY FOR DATALINE PROTECTIONITAxxB1®BIDIRECTIONAL TRANSIL™ ARRAYFOR DATALINE PROTECTIONASD™MAIN
ITA18B3RL ,BIDIRECTIONAL TRANSIL" ARRAY FOR DATALINE PROTECTIONITAxxB3®BIDIRECTIONAL TRANSIL™ ARRAYFOR DATALINE PROTECTIONASD™MAIN
ITA18B3RL ,BIDIRECTIONAL TRANSIL" ARRAY FOR DATALINE PROTECTIONFEATURES■ High surge capability Transil array:I = 40 A (8/20µs)PP■ Peak pulse power : 300 W (8/20µs ..
IRU3021MCW-IRU3021MCWTR
5 Bit Prog SynchBuck CIC w/3 LDO Controllers w/FET in a 28-Pin SOIC(WB) package
International
TOR Rectifier
Data Sheet No. PD94145
IRU3021M
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK
CONTROLLER IC WITH TRIPLE LDO CONTROLLER
FEATU RES
Provides single chip solution for Vcore, GTL+,
AGP bus, and 1.8V
III Automatic voltage selection for AGP slot Vooo
supply
Linear Regulator Controller On-Board for 1.8V
Designed to meet Intel latest VRM specification
for next generation microprocessors
D On-Board DAC programs the output voltage from
1.3V to 3.5V
Linear Regulator Controller On-Board for 1.5V
GTL+ Supply
Loss-less Short Circuit Protection for all Outputs
Synchronous operation allows maximum eth-
ciency
Patented architecture allows ioted frequency
operation as well as 100% duty cycle during
dynamic load
Minimum Part Count
Soft-Start
High current totem pole driver for direct driving of
the external Power MOSFET
Power Good function monitors all outputs
Over-Voltage Protection Circuitry Protects the
switcher output and generates a Fault output
APPLICATIONS
El Total Power Solution for next generation Intel
processor application
DESCRIPTION
The IRU3021M controller IC is specifically designed to
meet Intel specification for next generation microproces-
sor applications requiring multiple on-board regulators.
The IRU3021M provides a single chip controller IC for
the Vcore, three LDO controllers, one with an automatic
select pin that connects to the Type Detect pin of the
AGP slot for the AGP VDDo supply, one for GTL+ and
the other for the 1.8V chip set regulator as required for
the next generation PC applications. The IRU3021 M uses
N-channel MOSFET as pass transistor for Vour2(Vrxoa),
Vom3(1.5V) and Vour4(1.8V). No external resistor di-
vider is necessary for any of the regulators. The switch-
ing regulator feature a patented topology that in combi-
nation with a few external components as shown in the
typical application circuit, will provide well in excess of
20A of output current for an on-board DC/DC converter
while automatically providing the right output voltage via
the 5-bit internal DAC .The IRU3021 M also features, loss-
less current sensing for both switcher by using the Rosm)
of the high-side power MOSFET as the sensing resistor,
an output under-voltage shutdown that detects short cir-
cuit condition for the linear outputs and latches the sys-
tem off, and a Power Good window comparator that
switches its open collector output low when any one of
the outputs is outside of a pre-programmed window.
TYPICAL APPLICATION
3.3V ILJ
, g IJNEAR l" cl.
Cl OONTROL SMTCHER -
T ='l OONTROL VOUT1
VOUT2 t- |RU3021M (YE I
LINEAR LINEAR
1' CONTROL OONTROL ="
-"il Ii",
VOUT3 H" T VOUT4
Figure 1 - Typical application of the |RU3021M.
PACKAGE ORDER INFORMATION
TA (°C) DEVICE PACKAGE
0 To 70 IRU3021MCW 28-Pin Plastic SOIC WB
Rev. 1.5 1
07l17/02
IRU3021M
International
TOR Rectifier
ABSOLUTE MAXIMUM RATINGS
V5 Supply Voltage _.................................................. 7V
V12 Supply Voltage _.................................................
Storage Temperature Range ......................................
Operating Junction Temperature Range .....................
-65°C To 150°C
0°C To 125°C
PACKAGE INFORMATION
28-PIN WIDE BODY PLASTIC SOIC (W)
TOP VIEW
DriveZE U Eva
File @UGate
VID4E 26 Phase
VImIZ ElLGate
VlozE ZIPGnd
VID1E Eslocset
VIDOE Evan
PGoodE Elrm
SDE Elvs
VSENZE Ewan
SelectE EDrive3
SSE Elena
Fault/ RtE ENC
VSEN4E EDrive4
0JA=80°CIVV
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over V12=12V, V5=5V and TA=0 to 70°C. Typical values refer
to TA=25°C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient
temperature.
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Supply UVLO Section
UVLO Threshold-12V Supply Ramping Up 10 V
UVLO Hysteresis-12V 0.6 V
UVLO Threshold-W Supply Ramping Up 4.4 V
UVLO Hysteresis-W 0.3 V
Supply Current
Operating Supply Current V12 6 mA
Switching Controllers; Vcore (Vsen1) and AGP (Vsm2)
VID Section (Vcore only)
DAC Output Voltage (Note 1) 0.99Vs Vs 1.01Vs V
DAC Output Line Regulation 0.1 %
DAC Output Temp Variation 0.5 %
VID Input LO 0.8 V
VID Input HI 2 V
VID Input Internal PuII-Up 27 Kn
Resistor to V5
VSEN2 Voltage Select <0.8V 1.5 V
Select >2V 3.3
2 Rev. 1.5
07I17I02
