ASL1507SHN datasheet(2/56 Pages) NXP

2 / 56 page

NXP Semiconductors

ASL1507SHN; ASL2507SHN

Single-phase and two-phase boost converter with limp-home mode

ASL1507_ASL2507

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Product data sheet

Rev. 1 — 26 April 2018

2 / 56

The ASL1507SHN; ASL2507SHN integrates a non-volatile memory (NVM) to save

the default configuration internally. The configuration includes boost ramp-up, boost

voltage, frequency setting, error detection and etc. The default configuration is used in

limp‑home mode (SPI fail) and autonomous mode (no MCU). Additional features include

input undervoltage lockout and thermal shutdown when the junction temperature of the

ASL1507SHN; ASL2507SHN exceeds Tsd(otp).

The device is housed in a very small HVQFN32 package with an exposed thermal pad.

It is designed to meet the stringent requirements of automotive applications. It is fully

AEC-Q100 grade 1 qualified. It operates over the −40 °C to +125 °C ambient automotive

temperature range.

3 Features and benefits

• AEC-Q100 grade 1 qualified

• Limp-home mode ensuring system safety

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

• Single phase on each output or double phase on one output

• Fixed frequency operation via built-in oscillator from 125 kHz to 700 kHz

• Slope compensation to track the frequency and output voltage

• Programmable control loop compensation

• Programmable spread spectrum functionality

• Gate switching is halted when overvoltage on output is detected

• Programmable gate voltage

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

• Output voltage monitoring

• Supply voltage measurement

• Control signal to enable the device low quiescent current < 5 μA when EN = 0

• Read-back programmed voltage and frequency range via SPI

• Junction temperature monitoring via SPI

• Small package outline HVQFN32

• Wide operating input voltage range from +5.5 V to +40 V

• Operating ambient temperature range of −40 °C to +125 °C

4 Applications

• Automotive LED lighting

– Daytime running lights

– Position or park light

– Low beam

– High beam

– Turn indicator

– Fog light

– Cornering light

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