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HIP6019

更新时间： 2024-11-22 22:51:19
品牌 Logo 应用领域
英飞凌 - INFINEON /
页数 文件大小 规格书
17页 101K
描述
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK, NON-SYNCHRONOUS,ADJUSTABLE LDO AND 200mA ON-BOARD LDO

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Data Sheet No. PD94142  
IRU3007  
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK, NON-SYNCHRO-  
NOUS, ADJUSTABLE LDO AND 200mA ON-BOARD LDO  
FEATURES  
DESCRIPTION  
Provides Single Chip Solution for Vcore, GTL+,  
Clock Supply & 3.3V Switcher On-Board  
Second switcher provides simple control for the  
on-board 3.3V supply  
The IRU3007 controller IC is specifically designed to meet  
Intel specification for Pentium IIä microprocessor ap-  
plications as well as the next generation of P6 family  
processors. The IRU3007 provides a single chip control-  
ler IC for the Vcore, LDO controller for GTL+ and an  
200mA On-Board LDO Regulator  
Designed to meet Intel VRM 8.2 and 8.3 specifica- internal 200mA regulator for clock supply which are re-  
tion for Pentium IIä  
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  
quired for the Pentium II applications. It also contains a  
switching controller to convert 5V to 3.3V regulator for  
on-board applications that uses either AT type power  
supply or is desired not to rely on the ATX power supply’s  
3.3V output. These devices feature a patented topology  
that in combination with a few external components, as  
Synchronous Operation allows maximum efficiency shown in the typical application circuit, will provide in  
Patented architecture allows fixed frequency  
operation as well as 100% duty cycle during  
dynamic load  
Minimum Part Count  
Soft-Start  
High current totem pole drivers for directly driving  
the external Power MOSFETs  
Power Good function monitors all outputs  
Over-Voltage Protection circuitry protects the  
switcher outputs and generates a fault output  
Thermal Shutdown  
excess of 14A of output current for an on-board DC/DC  
converter while automatically providing the right output  
voltage via the 5-bit internal DAC. The IRU3007 also fea-  
tures, loss-less current sensing for both switchers by  
using the RDS(on) of the high-side power MOSFET as the  
sensing resistor, internal current limiting for the clock  
supply, a Power Good window comparator that switches  
its open collector output low when any one of the out-  
puts is outside of a pre-programmed window. Other fea-  
tures of the device are: Under-Voltage Lockout for both  
5V and 12V supplies, an external programmable soft-  
start function, programming the oscillator frequency via  
an external resistor, Over-Voltage Protection (OVP) cir-  
cuitry for both switcher outputs and an internal thermal  
shutdown.  
APPLICATIONS  
Total Power Solution for Pentium II processor  
application  
TYPICAL APPLICATION  
Note: Pentium II and Pentium Pro are trademarks of Intel Corp.  
5V  
SWITCHER2  
CONTROL  
SWITCHER1  
CONTROL  
V
OUT  
2
3
V
OUT  
1
4
IRU3007  
LINEAR  
CONTROL  
LINEAR  
REGULATOR  
VOUT  
VOUT  
Figure 1 - Typical application of IRU3007.  
PACKAGE ORDER INFORMATION  
TA (°C)  
DEVICE  
PACKAGE  
0 To 70  
IRU3007CW  
28-pin Plastic SOIC WB (W)  
Rev. 2.1  
08/20/02  
www.irf.com  
1
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