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ISL6520IBZ
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General Description

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MFG:Intersil Package Cooled:Original

ISL Series Datasheet download

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Part Number: ISL6520IBZ

MFG: Intersil

Package Cooled: Original

Description: The ISL6520 makes simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter. Designed...

ISL6520IBZ General Description

The ISL6520 makes simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter. Designed to drive N-channel MOSFETs in a synchronous buck topology, the ISL6520 integrates the control, output adj ustment, monitoring and protection functions into a single 8-pin package.

The ISL6520 provides simple, single feedback loop, voltage-mode control with fast transient response. The output voltage can beprecisely regulated to as low as 0.8V, with a maximum tolerance of ±1.5% over temperature and line voltage variations. A fixed frequency oscillator reduces design complexity, while balancing typical application cost and efficiency.

The error amplifier features a 15MHz gain-bandwidth product and 8V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty cycles range from 0% to 100%.Protection from over-current conditions is provided by monitoring the rDS(ON) of the upper MOSFET to inhibit PWM operation appropriately. This approach simplifies the implementation and improves efficiency by eliminating the need for a current sense resistor.

ISL6520IBZ Maximum Ratings

Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.0V
Absolute Boot Voltage, VBOOT . . . . . . . . . . . . . . . . . . . . . . . +15.0V
Upper Driver Supply Voltage, VBOOT - VPHASE. . . . . . . . . . . +6.0V
Input, Output or I/O Voltage. . . . . . . . . . . GND -0.3V to VCC +0.3V
ESD Classification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Class 2

Recommended Operating Conditions
Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%
Ambient Temperature Range - ISL6520C . . . . . . . . . . .0oC to 70oC
Ambient Temperature Range - ISL6520I. . . . . . . . . . -40oC to 85oC
Junction Temperature Range. . . . . . . . . . . . . . . . . . -40oC to 125oC

Thermal Information

Thermal Resistance JA (oC/W) JC (oC/W)
SOIC Package (Note 1). . . . . . . . . . . . . . 95. . N/A
QFN Package (Note 2, 3). . . . . . . . . . . . . .45. . 7
Maximum Junction Temperature
(Plastic Package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range. . . . . . . . -65oC to 150oC
Maximum Lead Temperature
(Soldering 10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)

ISL6520IBZ Features

•Operates from +5V Input
•0.8V to VIN Output Range   -0.8V Internal Reference    -±1.5% Over Line Voltage and Temperature
•Drives N-Channel MOSFETs
•Simple Single-Loop Control Design   -Voltage-Mode PWM Control
•Fast Transient Response   -High-Bandwidth Error Amplifier    -Full 0% to 100% Duty Cycle
•Lossless, Programmable Over-Current Protection -Uses Upper MOSFET's rDS(on)
•Small Converter Size   -300kHz Fixed Frequency Oscillator    -Internal Soft Start    -8 Ld SOIC or 16Ld 4x4mm QFN
•QFN Package:    -Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline      -Near Chip Scale Package footprint, which improves    PCB efficiency and has a thinner profile
•Pb-Free Plus Anneal Available (RoHS Compliant)

ISL6520IBZ Typical Application

•Power Supplies for Microprocessors
-PCs
-Embedded Controllers
•Subsystem Power Supplies
-PCI/AGP/GTL+ Buses
-ACPI Power Control
•Cable Modems, Set Top Boxes, and DSL Modems
•DSP and Core Communications Processor Supplies
•Memory Supplies
•Personal Computer Peripherals
•Industrial Power Supplies
•5V-Input DC/DC Regulators
•Low-Voltage Distributed Power Supplies

ISL6520IBZ Connection Diagram

ISL6520IBZ datasheet

ISL6520IBZ
PDF/DataSheet Download

Datasheet: ISL6520IBZ
File Size: 415383 KB
Manufacturer: INTERSIL [Intersil Corporation]
Click here to Download

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