Overview
Description
Support is limited to customers who have already adopted these products.
The ISL6525 provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N Channel MOSFETs in a synchronous-rectified buck topology. The ISL6525 integrates all of the control, output adjustment, monitoring and protection functions into a single package. A programmable delay time for the PGOOD signal makes it especially suitable for the VTT regulation in VRM8. 5 applications. The output voltage of the converter can be precisely regulated to as low as 1. 20V, with a maximum tolerance of ±1% over temperature and line voltage variations. The ISL6525 provides simple, single feedback loop, voltage-mode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0% to 100%. The ISL6525 protects against over-current conditions by inhibiting PWM operation. The ISL6525 monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor.
Features
- Drives Two N-Channel MOSFETs
- Operates From +5V or +12V Input
- Simple Single-Loop Control Design
- Voltage-Mode PWM Control
- Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
- Excellent Output Voltage Regulation
- 1.20V Internal Reference
- ±1% Over Line Voltage and Temperature
- Programmable delay for PGOOD signal
- Over-Current Fault Monitor
- Does Not Require Extra Current Sensing Element
- Uses MOSFETs rDS(ON)
- Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from 50kHz to Over 1MHz
- 14 Pin, SOIC Package
- Pb-Free Available (RoHS Compliant)
Comparison
Applications
Applications
- Power Supply for Various Microprocessors
- VTT Regulation for VRM85
- High-Power 5V to 3xV DC-DC Regulators
- Low-Voltage Distributed Power Supplies
Documentation
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|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 857 KB | |
| Brochure | PDF 5.49 MB 日本語 | |
| End Of Life Notice | PDF 320 KB | |
| Product Change Notice | PDF 152 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
| Other | PDF 562 KB | |
7 items
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
| SOICN | Tube | 1000 | ||
| SOICN | Reel | 2500 |
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