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Automotive linear regulators integrate voltage tracker, protection circuitry

Sunnyvale, Calif. — Maxim Integrated Products has introduced the highly integrated MAX15008 and MAX15010 300-mA automotive linear regulators with a voltage tracker and load-dump protection. Designed to withstand harsh operating conditions, these low-dropout (LDO) regulators integrate robust protection circuitry; operate over a 5-V to 40-V supply-voltage range, and are able to withstand load-dump transients up to 45 V.

To enable precise ratiometric tracking in automotive applications, the MAX15008/MAX15010 regulators offer a tracked output voltage that is capable of delivering up to 50 mA to a remote sensor. The voltage tracker provides tracking accuracy within ±3 mV, as well as battery-reversal and short-circuit protection. The integration of these protection features and voltage tracking makes these linear regulators suitable for automotive sensor applications such as instrument clusters, climate control, and power-supply circuits.

The MAX15008/MAX15010 devices offer independent enable controls for the linear regulator, voltage tracker, and over-voltage protector (MAX15008 only) to optimize performance. Offering low power consumption, these linear regulators consume only 50 microamps of quiescent current in a standalone configuration, and 20 microamps in shutdown mode.

Well suited for always-on circuits, these devices provide enable and hold inputs for key-off conditions. In addition, to save cost and further improve performance, the MAX15008 integrates an over-voltage-protection (OVP) controller that protects downstream circuits from high-voltage load dump, thus allowing the use of lower cost DC-DC converters, Maxim said.

The MAX15008/MAX15010 devices are available in a thermally enhanced, 5 x 5-mm, 32-pin TQFN package. They are fully specified over the -40°C to +125°C automotive temperature range.

Pricing: Starts at $1.45 (1000-up, FOB USA).
Datasheet: MAX15008

Maxim Integrated Products , 1-800-998-8800, www.maxim-ic.com

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