Overview
Description
The ISL95873 is a Single-Phase Synchronous-Buck PWM controller featuring Renesas' proprietary R4™ Technology. The R4™ modulator has integrated compensation, fast transient performance, accurate switching frequency control, and excellent light-load efficiency. These technology advances, together with integrated MOSFET drivers and a Schottky bootstrap diode, allow for a high-performance regulator that is highly compact and needs few external components. Differential remote sensing of the output voltage is an additional feature. For maximum efficiency, the converter automatically enters diode-emulation mode (DEM) during light-load conditions, such as system standby. The ISL95873 accepts a wide 3. 3V to 25V input voltage range, making it ideal for systems that run on battery or AC-adapter power sources. It also is a low-cost solution for applications requiring tracking of an external reference voltage during soft-start. When the external reference level meets the internal reference voltage, the ISL95873 switches from the external reference to the internal reference. The external reference is only used during soft-start.
Features
- External reference tracking
- R4™ modulator technology
- Internal compensation
- Fast, optimal transient response
- Input voltage range: 3.3V to 25V
- Output voltage range: 0.5V to 3.3V
- Precision voltage regulation
- ±0.5% System accuracy over -10°C to +100°C
- Output voltage remote sense
- Fixed 300kHz PWM frequency in continuous conduction
- Proprietary frequency control loop
- Automatic diode emulation mode for highest efficiency
- Power-good monitor for soft-start and fault detection
Comparison
Applications
Applications
- Compact buck regulators requiring external tracking
Documentation
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Type | Title | Date |
Datasheet | PDF 933 KB | |
Brochure | PDF 5.49 MB 日本語 | |
End Of Life Notice | PDF 1.17 MB | |
Product Change Notice | PDF 398 KB | |
Application Note | PDF 509 KB | |
Application Note | PDF 397 KB | |
6 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.