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ISL854102DEMO2Z Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ISL854102DEMO2Z Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 21 page  FN8870 Rev.1.00 Page 1 of 21 Mar 15, 2019 FN8870 Rev.1.00 Mar 15, 2019 ISL854102 Wide VIN 1.2A Synchronous Buck Regulator DATASHEET The ISL854102 is a 1.2A synchronous buck regulator with an input range of 3V to 40V. It provides an easy-to-use, high efficiency, low BOM count solution for a variety of applications. The ISL854102 integrates both high-side and low-side NMOS FETs and features a PFM mode for improved efficiency at light loads. This feature can be disabled if a forced PWM mode is needed. The ISL854102 switches at a default frequency of 500kHz; however, it can also be programmed using an external resistor from 300kHz to 2MHz. The ISL854102 has the ability to use internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, which reduces the BOM count and design complexity. With a wide VIN range and reduced BOM, the ISL854102 provides an easy to implement design solution for a variety of applications while giving superior performance. The ISL854102 provides a very robust design for high-voltage industrial applications and an efficient solution for battery powered applications. The ISL854102 is available in a small Pb-free 4mmx3mm DFN plastic package with a full-range industrial temperature of -40°C to +125°C. Related Literature For a full list of related documents, visit our website: • ISL854102 device page Features • Wide input voltage range: 3V to 40V • Synchronous operation for high efficiency • No compensation required • Integrated high-side and low-side NMOS devices • Selectable PFM or forced PWM mode at light loads • Internal fixed frequency (500kHz) or adjustable switching frequency (300kHz to 2MHz) • Continuous output current up to 1.2A • Internal or external soft-start • Minimal external components required • Power-good and enable functions available Applications • Industrial control •Medical devices •Portable instrumentation • Distributed power supplies • Cloud infrastructure FIGURE 1. TYPICAL APPLICATION FIGURE 2. EFFICIENCY vs LOAD, PFM, VOUT = 5V, L1 = 22µH GND CBOOT 100nF CFB R3 R2 PHASE SS SYNC BOOT VIN PGND FS COMP FB VCC PG EN CVCC 1µF CVIN 10µF L1 22µH 1 2 3 4 5 6 9 10 11 12 INTERNAL DEFAULT PARAMETER SELECTION COUT 10µF VOUT 50 55 60 65 70 75 80 85 90 95 100 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 OUTPUT LOAD (A) VIN=12V VIN=15V VIN=24V |
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