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 0-100% duty ratio
- Excellent output voltage regulation
- 0.8V internal reference
- ±1% over line voltage and temperature
- Overcurrent fault monitor
- Does not require extra current sensing element
- Uses MOSFETs rDS(ON)
- Converter can source and sink current
- Small converter size
- Constant frequency operation
- 200kHz free-running oscillator programmable from 50kHz to over 1MHz
- 14-lead SOIC and TSSOP package and 16-lead 5x5mm QFN Package
- QFN Package
- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads-Product Outline.
- Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile
- Pb-Free Available (RoHS Compliant)
ISL6522 Functional Diagram
Description
The ISL6522 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 ISL6522 integrates all of the control, output adjustment, monitoring and protection functions into a single package. The output voltage of the converter can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1% over temperature and line voltage variations. The ISL6522 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 0-100%. The ISL6522 protects against overcurrent conditions by inhibiting PWM operation. The ISL6522 monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor.
Parameters
| Attributes | Value |
|---|---|
| Output Current (Max) [Rail 1] (A) | 25 |
| Qualification Level | Standard |
| Temp. Range (°C) | -40 to +85°C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| QFN | 5.0 x 5.0 x 0.90 | 16 | 0.8 |
Applications
- Power supply for Pentium®, Pentium Pro, PowerPC® and AlphaPC microprocessors
- High-power 5V to 3xV DC-DC regulators
- Low-voltage distributed power supplies
| Part Number | Status | Samples | Stock | RoHS | Package | Budgetary Price (USD) | Carrier Type | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|
| ISL6522IRZ-T | Active | Available | Out of Stock | RoHS:EN | QFN | 1ku | $2.51 | Reel | MALAYSIA | USA |
| ISL6522CBZ | Obsolete | N/A | In Stock | Contact | SOICN | Tube | |||
| ISL6522CBZ-T | Obsolete | N/A | In Stock | Contact | SOICN | Reel | |||
| ISL6522CRZ | Obsolete | N/A | In Stock | RoHS:EN | QFN | Tray | |||
| ISL6522CRZ-T | Obsolete | N/A | Out of Stock | RoHS:EN | QFN | Reel | |||
| ISL6522CRZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | QFN | Reel | |||
| ISL6522IBZ | Obsolete | N/A | In Stock | Contact | SOICN | Tube | |||
| ISL6522IBZ-T | Obsolete | N/A | Out of Stock | Contact | SOICN | Reel | |||
| ISL6522IRZ | Obsolete | N/A | In Stock | RoHS:EN | QFN | Tray | |||
| ISL6522IRZ-TK | Obsolete | N/A | Out of Stock | RoHS:EN | QFN | Reel |
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- Product Change NoticePDF 169 KB Nov 17, 2022
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- Application NotePDF 397 KB an1684 Jan 19, 2004AI-generated Summary: The document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design and safety, disclaims liability for damages, and clarifies no intellectual property licenses are granted. Products are categorized by quality grades with specific application recommendations. Users must comply with laws, avoid unauthorized modifications, and ensure safe use within specified conditions. Contact details for Renesas Electronics sales offices worldwide are provided.
- Application NotePDF 509 KB an1681 Jan 19, 2004AI-generated Summary: The document explains grounding techniques for PCB layouts using a dual op amp example on a single-layer copper board. It compares three grounding schemes: a center spine ground trace, an outer ground plane, and a split/star ground plane, highlighting the benefits of single-point grounding to minimize noise and antenna effects. It emphasizes following current paths, minimizing loop lengths, and ensuring close forward and return paths to reduce interference. The document also includes disclaimers on product use, quality grades, safety, and legal compliance.
- DocumentPDF 562 KB tb417 Dec 11, 2003
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- Application NotePDF 397 KB an1684 Jan 19, 2004AI-generated Summary: The document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design and safety, disclaims liability for damages, and clarifies no intellectual property licenses are granted. Products are categorized by quality grades with specific application recommendations. Users must comply with laws, avoid unauthorized modifications, and ensure safe use within specified conditions. Contact details for Renesas Electronics sales offices worldwide are provided.
- Application NotePDF 509 KB an1681 Jan 19, 2004AI-generated Summary: The document explains grounding techniques for PCB layouts using a dual op amp example on a single-layer copper board. It compares three grounding schemes: a center spine ground trace, an outer ground plane, and a split/star ground plane, highlighting the benefits of single-point grounding to minimize noise and antenna effects. It emphasizes following current paths, minimizing loop lengths, and ensuring close forward and return paths to reduce interference. The document also includes disclaimers on product use, quality grades, safety, and legal compliance.
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- Product Change NoticePDF 169 KB Nov 17, 2022
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