Step-Down Converters Target Always-On Car Systems

Maxim Integrated Products has announced the ultra-compact, pin-compatible MAX20075 and MAX20076 step-down converters that enable system designers looking to create small and highly efficient 40-V load dump-tolerant applications. The MAX20075 and MAX20076 step-down converters offer low quiescent current (IQ) and feature integrated compensation. This enables minimal external components that can lead up to 50% savings in board space making them well-suited for always-on automotive applications.

According to Maxim Integrated, car customers expect always-on applications to bring them experiences richer and more compelling than ever before. However, car system designers are challenged with having to balance delivering advanced features with meeting size constraints, power-saving features and high efficiency.

The MAX20075 and MAX20076 in peak current mode draw just 3.5 µA in the low power operating mode, which is key to meeting the stringent OEM IQ consumption requirements of 100 µA per module. The converters enable low noise operation via pin-controlled spread spectrum and fixed 2.1 MHz operation to meet CISPR 25 Class 5 EMI compliance. Furthermore, added advantage of the 2.1 MHz operation and internal compensation is that it lowers the solution size and the bill of materials (BOM) compared to a non-synchronous device that operates in the AM band.

The MAX20075 and MAX20076 are available with a low minimum on-time mode operation, which allows the converters to support large input-to-output conversion ratios. For example, Vbatt input to Vout of less than 3 V at 2.1 MHz; this translates to not having to use a secondary supply, which reduces overall BOM cost by $0.30 to incorporate new functions into the design for greater flexibility. The MAX20075 and MAX20076 meet AEC-Q100, are available in a 3 mm x 3 mm TDFN package, and operate over the -40°C to +125°C temperature range.

Maxim Integrated | www.maximintegrated.com

Nanopower Comparator

TLV3691The TLV3691 comparator offers a wide supply range, low quiescent current, and rail-to-rail inputs. These features come in industry-standard and extremely small packages, making this device ideal for low-voltage and low-power applications.

Available as a single channel, the comparator’s low power, wide supply, and temperature range make the device flexible enough to handle applications from consumer to industrial. The TLV3691 is available in SC70-5 and 1-mm × 1-mm DFN-6 packages. This device is specified for operation across the –40°C-to-125°C expanded industrial temperature range.

The TLV3691’s features include a 24-µs response time, push-pull output, and a range that extends 100 mV beyond both rails. Texas Instruments offers a variety of tools and resources to speed development with the TLV3691, including a SPICE Model, TINA-TI SPICE Model, and the DIP adapter evaluation module.

Contact Texas Instruments for pricing.

Texas Instruments, Inc.
www.ti.com