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MFG:IR D/C:3
Part Number: IRU3146
MFG: IR
D/C: 3
Description: The IRU3146 IC combines a Dual synchronous Buck controller, providing a cost-effective, high performan...
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IRU3146
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DataSheet
General Description
IRU3146 General Description
The IRU3146 IC combines a Dual synchronous Buck controller, providing a cost-effective, high performance and flexible solution. The IRU3146 can configured as 2- independent or as 2-phase controller. The 2-phase configuration is ideal for high current applications. The IRU3146 features 180o out of phase operation which reduces the required input/output capacitance and results to few number of capacitor quantity. Other key features offered by this device include two independent programmable soft starts, programmable switching frequency up to 500KHz per phase, under voltage lockout function. The current limit is provided by sensing the lower MOSFET's on-resistance for optimum cost and performance.
IRU3146 Maximum Ratings
Vcc, VCL Supply Voltage .......................................... -0.5V To 16V
VcH1 and VcH2 Supply Voltage ............................... -0.5V To 25V
PGOOD................. ................................................... -0.5V To 16V
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.
VcH1 and VcH2 Supply Voltage ............................... -0.5V To 25V
PGOOD................. ................................................... -0.5V To 16V
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.
IRU3146 Features
· Dual Synchronous Controller with 180oout-of-phase
· Configurable to 2-Independent Outputs or 2-Phase Single Output
· Current Sharing Using Inductor's DCR
· Current Limit using MOSFET's RDS(ON)
· Hiccup/Latched Current Limit
· Latched Over-Voltage Protection
· Vcc from 4.5V to 16V Input
· Programmable Switching Frequency up to 500KHz
· Two Independent Soft-Starts/ Shutdowns
· 0.8V Precision Reference Voltage Available
· Power Good Output
· External Frequency Synchronization
· Configurable to 2-Independent Outputs or 2-Phase Single Output
· Current Sharing Using Inductor's DCR
· Current Limit using MOSFET's RDS(ON)
· Hiccup/Latched Current Limit
· Latched Over-Voltage Protection
· Vcc from 4.5V to 16V Input
· Programmable Switching Frequency up to 500KHz
· Two Independent Soft-Starts/ Shutdowns
· 0.8V Precision Reference Voltage Available
· Power Good Output
· External Frequency Synchronization
IRU3146 Typical Application
· Embedded Computer Systems
· Telecom Systems
· 2-Phase Power Supply
· Point of Load Power Architectures
· Graphic Card
· DDR Memory Applications
· Telecom Systems
· 2-Phase Power Supply
· Point of Load Power Architectures
· Graphic Card
· DDR Memory Applications
IRU3146 Connection Diagram
IRU3146
PDF/DataSheet Download
- Datasheet: IRU3146
- File Size: 540805 KB
- Manufacturer: IRF [International Rectifier]
- Click here to Download
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