ISL85415FRZ

Datasheet ISL85415 Wide V 500mA Synchronous Buck Regulator IN The ISL85415 is a 500mA synchronous buck Features regulator with an input range of 3V to 36V. The device Wide input voltage range 3V to 36V provides an easy-to-use high-efficiency, low Synchronous operation for high efficiency BOM-count solution for a variety of applications. No compensation required The ISL85415 integrates both high-side and low-side NMOS FET s and features a PFM mode for improved Integrated High-side and Low-side NMOS devices efficiency at light loads. The feature can be disabled if Selectable PFM or forced PWM mode at light loads forced PWM mode is desired. The device switches at a default frequency of 500kHz, but can also be Internal fixed (500kHz) or adjustable switching programmed using an external resistor from 300kHz frequency 300kHz to 2MHz to 2MHz. The ISL85415 has the ability to use internal Continuous output current up to 500mA or external compensation. By integrating both NMOS Internal or external soft-start devices and providing internal configuration options, minimal external components are required, reducing Minimal external components required both the BOM count and complexity of design. Power-good and enable functions available. With the wide V range and reduced BOM the part IN Applications provides an easy to implement design solution for a variety of applications while giving superior Industrial control performance. It provides a very robust design for Medical devices high-voltage Industrial applications and delivers an efficient solution for battery powered applications. Portable instrumentation The ISL85415 is available in a small Pb-free Distributed power supplies 4mmx3mm DFN plastic package with an operation Cloud infrastructure temperature range of -40C to +125C. Related Literature For a full list of related documents, visit our website: ISL85415 device page 100 V = 12V V = 5V V = 15V IN IN IN 95 90 1 12 SS FS 85 2 11 COMP SYNC R 2 80 10 3 BOOT FB C BOOT 75 GND 100nF 9 4 R3 VIN C VCC VIN C 70 V = 33V VCC IN 10F V = 24V 1F 5 IN V OUT PHASE PG 65 L1 6 22H PGND EN 60 55 Internal Default Parameter Selection 50 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 Output Load (A) Figure 1. Typical Application Figure 2. Shutdown Supply Current vs Temperature FN8373 Rev.5.00 Page 1 of 31 Jul.24.19 Efficiency (%)ISL85415 Contents 1. Overview . 3 1.1 Typical Application Diagrams . 3 1.2 Block Diagram 4 1.3 Ordering Information . 5 1.4 Pin Configuration 5 1.5 Pin Descriptions . 5 2. Specifications . 7 2.1 Absolute Maximum Ratings 7 2.2 Thermal Information 7 2.3 Recommended Operation Conditions 7 2.4 Electrical Specifications . 8 3. Efficiency Curves . 10 4. Typical Performance Curves 15 5. Detailed Description 19 5.1 Power-On Reset . 19 5.2 Soft Start . 19 5.3 Power-Good . 19 5.4 PWM Control Scheme . 19 5.5 Light Load Operation 20 5.6 Output Voltage Selection . 21 6. Protection Features . 22 6.1 Overcurrent Protection . 22 6.2 Negative Current Limit . 22 6.3 Over-Temperature Protection . 22 6.4 Boot Undervoltage Protection . 22 7. Application Guidelines 23 7.1 Simplifying the Design . 23 7.2 Operating Frequency 23 7.3 Synchronization Control 23 7.4 Minimum On/Off-Time Limitation . 24 7.5 Output Inductor Selection 24 7.6 Buck Regulator Output Capacitor Selection 24 7.7 Loop Compensation Design 25 7.8 Layout Considerations . 28 8. Revision History 29 9. Package Outline Drawing 30 FN8373 Rev.5.00 Page 2 of 31 Jul.24.19