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| PWM and Triple Linear Power Controller |
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Available in RoHS/Pb-Free
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 Buy direct from Intersil
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 Check distributor inventory
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 Request samples
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| HIP6521CB |
Active |
Comm |
16 Ld SOIC |
1 |
3.08 |
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| HIP6521CB-T |
Active |
Comm |
16 Ld SOIC T+R |
1 |
3.08 |
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| HIP6521CBZ |
Active |
Comm |
16 Ld SOIC |
3 |
3.08 |
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| HIP6521CBZ-T |
Active |
Comm |
16 Ld SOIC T+R |
3 |
3.08 |
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| HIP6521EVAL1 |
Active |
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Eval Board |
N/A |
Contact Us |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The HIP6521 provides the power control and protection for four output voltages in high-performance microprocessor and computer applications. The IC integrates a voltage-mode PWM controller and three linear controllers, as well as monitoring and protection functions into a 16 Ld SOIC package. The PWM controller is intended to regulate the microprocessor memory core voltage with a synchronous-rectified buck converter. The linear controllers are intended to regulate the computer system’s AGP 1.5V bus power, the 2.5V clock power, and the 1.8V power for the North/South Bridge core voltage and/or cache memory circuits. Both the switching regulator and linear voltage references provide ±2% of static regulation over line, load, and temperature ranges. All outputs are user-adjustable by means of an external resistor divider. All linear controllers employ bipolar NPNs for the pass transistors.
The HIP6521 monitors all the output voltages. The PWM controller’s adjustable overcurrent function monitors the output current by using the voltage drop across the upper MOSFET’s rDS(ON). The linear regulator outputs are monitored via the FB pins for undervoltage events. |
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 Key Features |
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Provides 4 Regulated Voltages
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Memory Core, AGP, Clock, and Memory Controller Hub Power
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ACPI Compatible
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Drives Bipolar Linear Pass Transistors
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Externally Resistor-Adjustable Outputs
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Simple Single-Loop Control Design
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Fast PWM Converter Transient Response
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High-Bandwidth Error Amplifier
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Full 0% to 100% Duty Ratio
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Excellent Output Voltage Regulation
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All Outputs: ±2% Over Temperature
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Overcurrent Fault Monitors
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Switching Regulator Does Not Require Extra Current Sensing Element, Uses MOSFET’s rDS(ON)
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Small Converter Size
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300kHz Constant Frequency Operation
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Small External Component Count
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Pb-Free Plus Anneal Available (RoHS Compliant)
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| Related Documentation |
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 Datasheet(s): |
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 Evaluation Board(s): |
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 i-Sim: |
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 Parametric Data |
| | VIN (min) (V) | | 5 | | | VIN (max) (V) | | 5 | | | VOUT1 (min) (V) | | .8 | | | VOUT1 (max) (V) | | 4.5 | | | VOUT2 (V) | | Adj. | | | VOUT3 (V) | | Adj. | | | VOUT4 (V) | | Adj. | | | IOUT1 (A) | | 20 | |
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| Applications |
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- Motherboard Power Regulation for Computers
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| | HIP6019B | | Advanced Dual PWM and Dual Linear Power Control | | | | HIP6021 | | Advanced PWM and Triple Linear Power Controller | | | | ISL6232 | | High Efficiency System Power Supply Controller for Notebook Computers | | | | ISL6236 | | High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers | | | | ISL6236A | | High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers | | | | ISL62381 | | High-Efficiency, Quad-Output System Power Supply Controller for Notebook Computers | | | | ISL62382 | | High-Efficiency, Quad-Output System Power Supply Controller for Notebook Computers | | | | ISL62383 | | High-Efficiency, Triple-Output System Power Supply Controller for Notebook Computers | | | | ISL6521 | | PWM Buck DC/DC and Triple Linear Power Controller | | | | ISL6523 | | VRM8.5 Dual PWM and Dual Linear Power System Controller | | | | ISL6524 | | VRM8.5 PWM and Triple Linear Power System Controller | | | | ISL6524A | | VRM8.5 PWM and Triple Linear Power System Controller | | | | ISL6537 | | ACPI Regulator/Controller for Dual Channel DDR Memory Systems | | | | ISL6548 | | ACPI Regulator/Controller for Dual Channel DDR Memory Systems | | | | ISL9440 | | Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller | | | | ISL9440A | | Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller | | | | ISL9441 | | Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller | |
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