Overview
Description
The ISL8500 is a high-performance, simple output controller that provides a single, high frequency power solution for a variety of point-of-load applications. The ISL8500 integrates a 2A standard buck PWM controller and switching MOSFET. The PWM controller in the ISL8500 drives an internal switching N-Channel power MOSFET and requires an external Schottky diode to generate an output voltage from 0.6V to 19V. The integrated power switch is optimized for excellent thermal performance up to 2A of output current. The standard buck input voltage range supports a fixed 5V or variable 5.5V to 25V range. The PWM regulator switches at a fixed frequency of 500kHz and utilizes simple voltage mode control with input voltage feed forward to provide flexibility in component selection and minimize solution size. Protection features include overcurrent, undervoltage and thermal overload protection integrated into the IC. The ISL8500 power good signal output indicates loss of regulation on the PWM output. ISL8500 is available in a small 4mm x 3mm Dual Flat No-Lead (DFN) package.
Features
- Standard Buck Controller with Integrated Switching Power MOSFET
- Integrated Boot Diode
- Input Voltage Range
- Fixed 5V ±10%
- Variable 5.5V to 25V
- PWM Output Voltage Adjustable from 0.6V to 19V with Continuous Output Current up to 2A
- ±1% VFB Tolerance
- Voltage Mode Control with Voltage Feed Forward
- Fixed 500kHz Switching Frequency
- Externally Adjustable Soft-Start Time
- Output Undervoltage Protection
- Enable Inputs
- PGOOD Output
- Overcurrent Protection
- Thermal Overload Protection
- Internal 5V LDO regulator
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
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Software type
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Company
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| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
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Simulator | Renesas |
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Boards & Kits
Evaluation
ISL8500EVAL1Z
Obsolete
2A Standard Buck PWM Regulator Evaluation Board
The ISL8500EVAL1Z REV A kit is intended for use by individuals with requirements for point-of-load (POL) applications sourcing from 4.5V to 25V and 9V to 14V respectively. This evaluation board is used to demonstrate the performance of the ISL8500 standard buck regulator.
The ISL8500 is offered...
Recommended Documents:
Evaluation
ISL8500EVAL2Z
Last Time Buy
2A Standard Buck PWM Regulator Evaluation Board
The ISL8500EVAL2Z REV A kit is intended for use by individuals with requirements for point-of-load (POL) applications sourcing from 4.5V to 25V and 9V to 14V respectively. This evaluation board is used to demonstrate the performance of the ISL8500 standard buck regulator.
The ISL8500 is offered...
Recommended Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Models
| Model - iSim | SXSCH 227 KB | |
1 item
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Product Options
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Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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ISL85003A
Anyone used this buck convertor, I cannot get it to regulate. output should be (set for) 0.9V. I get 1V off load and 0.77V full load (3A) I am thinking the problem is layout? Jessica
Aug 6, 2019
FAQs
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What advantage does switching between CCM and DCM have?
Question: What advantage does switching between continuous conduction mode (CCM) and discontinous conduction mode (DCM) have? Answer: Switching from CCM to DCM will improve the efficiency at light loads. For example, our ISL85003 can automatically switch between DCM and CCM for light load efficiency in DCM. Its fast transition between ...
Jan 1, 1970