FAN1587AMX

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The FAN1587AMX is a power management integrated circuit (PMIC) used in a variety of special purpose voltage regulator applications. It is part of a series of PMICs developed by Fairchild Semiconductor with an emphasis on solving power supply design challenges in consumer electronics, automotive and telecommunications applications.

The FAN1587AMX is designed to provide up to four regulated supply voltages, each of which can be configured as positive or negative. This wide-range power supply design provides power to a variety of applications including LCD display, camera modules, microprocessors and FPGAs. The device’s incorporate an efficient power switch design with a wide input voltage range of 3.3 V to 36 V, granting compatibility with a wide range of input sources, including Li-Ion batteries and USB ports.

The FAN1587AMX utilizes pulse width modulation (PWM) control with hysteretic current-mode control loop. This architecture allows it to switch frequency with a substantially low operating temperature and frequencies up to 1.5 MHz. It also contains a wide assortment of protections such as Over Temperature Protection (OTP), Over Voltage Protection (OVP), and a three-level Under Voltage Lockout (UVLO). To reduce system cost, the device includes a power-good (PGOOD) output for system monitoring, along with programmable shutdown and soft start sequence.

One of the largest advantages of the FAN1587AMX is its high efficiency from 3.3 V to 36 V. The device typically operates around 90% power efficiency. The integral frequency-synchronization (F/S) feature of the device helps reduce EMI/RFI, therefore reducing power line noise interference. With its maintenance-free operation consisting of integrated compensation, the device requires no external components. Additionally, the device is designed for low electromagnetic interference (EMI) operation by using Spread Spectrum Frequency Modulation technique.

The FAN1587AMX is available in a thermally enhanced HTSSOP-20 package, which is capable of dissipating up to 1.5 W of total power. It boasts an operating temperature range of -40 to +85 °C, and a storage temperature range of -50 to +125 °C. The device is tested to meet a variety of environmental, safety, and EMC standards and regulations, including UL, CSA, IEC6, JEDEC, JEM, and CB.

In conclusion, the FAN1587AMX is designed for a myriad of different voltage regulator applications. It provides up to four regulated supply voltages, with an input voltage range of 3.3 V to 36 V, and a high efficiency of up to 90%. The device contains an array of protections and features, such as Over Temperature Protection (OTP), Over Voltage Protection (OVP) , and an Under Voltage Lockout with three levels. It runs with a thermally enhanced HTSSOP-20 package and is capable of dissipating up to 1.5 W of total power. In addition, the device is designed for low EMI operation by use of the F/S and Spread Spectrum Frequency Modulation.

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