ASL4501SHN datasheet(2/43 Pages) NXP

2 / 43 page

ASL4501SHN

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Product data sheet

Rev. 2 — 10 January 2018

2 of 43

NXP Semiconductors

ASL4501SHN

Four-phase boost converter

Features and benefits

 The ASL4501SHN is an automotive grade product that is AEC-Q100 grade 1 qualified

 Operating ambient temperature range of

40 C to +125 C

 Wide operating input voltage range from 5.5 V to 40 V

 Output voltage programmable via SPI

 Multi-phase operation for higher power

 Up to four phases per output

 Up to two flexible output voltages with 3 % accuracy programmable via SPI

 Both output voltages can be controlled independently

 Fixed frequency operation via built-in oscillator

 Slope compensation tracks the frequency and output voltage

 Programmable control loop compensation

 Fast high efficiency field-effect transistor (FET) switching

 Programmable internal gate driver voltage regulator

 Gate switching is halted when overvoltage on output is detected

 Supports both logic level and standard level FETs

 Low electromagnetic emission (EME) and high electromagnetic immunity (EMI)

 Output voltage monitoring

 Supply voltage measurement

 Control signal to enable the device

 Read back programmed voltage and frequency range via SPI

 Junction temperature monitoring via SPI

 Small package outline HVQFN32

 Low quiescent current < 5

A at 25 C when EN = 0

 Accurate power dissipation in phases assigned to one output

Applications

 Automotive LED lighting

 Low beam

 High beam

 Daytime running lights

 Turn indicator

 Position or park light

 Front fog light

 Cornering light

 Advanced front lighting

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