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MAX20458ATID/VY: 36V Boost Controller with Integrated 3.5A Synchronous Buck Converter for Automotive Applications

Model: MAX20458ATID/VY

Package: TQFN-28

Type: Switching Regulator - Boost Controller/Buck Converter

The MAX20458ATID/VY is an automotive grade PMIC consisting of a synchronous buck converter and an asynchronous boost controller with 2.1MHz and 400kHz switching frequency options. the boost controller can be used to power the buck converter, allowing it to remain in a regulated state during a cold start from a battery input as low as 2V. The device operates from a 3.5V to 36V input voltage and can be operated in a low dropout regulated state with a 95% duty cycle. The device can operate in applications with a wide input voltage range and medium to high power requirements, such as automotive cold start or engine start-stop conditions.

MAX20458ATID/VY - Product Features:

Meets stringent OEM module power and performance specifications

- 10µA supply current @ 5V Buck turn-on

- OUT voltage can be 5V or 3.3V

- 30µA supply current @ full regulator on

Supports start-up ready designs

- Output voltage remains in regulated range during cold start down to 2V battery voltage

- Wide 3.5V to 36V input voltage range

EMI suppression feature reduces interference in sensitive radio frequency bands without affecting the wide input voltage range

- 20ns (typical) minimum turn-on time

- 3.3V @ 2.1MHz output for skip-free operation

- Spread Spectrum Options

- Phase-locked loop (PLL) frequency synchronisation

Integrated and thermally enhanced package saves board space and cost

- 2.1MHz Buck Converter with Asynchronous Boost Controller

- Current Mode Controller with Forced Fixed Frequency and Pulse Hopping Modes

Thermally enhanced, 5mm x 5mm, 28-pin TQFN-EP package

- Protection features to improve system reliability

- Power supply undervoltage lockout

- Thermal and short circuit protection

Applications:

Automotive start/stop systems

Instrument panels

Navigation and radio head units

Telematics applications

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