The LT8610’s unique design maintains a minimum dropout voltage of only 200mV (@1A) under all conditions, enabling it to excel in scenarios such as automotive cold-crank. Furthermore, a fast minimum on-time of only 50ns enables 2MHz constant frequency switching from a 16V input to a 1.8V output, enabling designers to optimize efficiency while avoiding critical noise-sensitive frequency bands. The LT8610’s 16-lead thermally enhanced MSOP package and high switching frequency keeps external inductors and capacitors small, providing a compact, thermally efficient footprint.
The LT8610 utilizes internal top and bottom high efficiency power switches with the necessary boost diode, oscillator, control and logic circuitry integrated into a single die. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping output ripple below 10mVPK-PK. Special design techniques and a new high speed process enable high efficiency over a wide input voltage range, and the LT8610s’s current-mode topology enables fast transient response and excellent loop stability. Other features include internal compensation, a power good flag, output soft start/tracking and thermal protection.
The LT8611 includes all of the features of the LT8610, plus a built-in current sense amplifier with monitor and control pins, enabling accurate input or output current regulation and limiting. It is offered in a 3mm x 5mm 24-lead QFN package.
The LT8610EMSE comes in a thermally enhanced MSOP-16 package and is priced from $3.55 each. An industrial temperature version, the LT8610IMSE, is tested and guaranteed to operate from a -40°C to 125°C operating junction temperature and is priced from $3.91. An automotive temperature version, the LT8610HMSE, is tested and guaranteed to operate from a -40°C to 150°C operating junction temperature and is priced from $4.16 each. All pricing is for 1,000 piece quantities and all versions are available from stock.
The LT8611EUDD is packaged in a 3mm x 5mm QFN-24 package and is priced from $3.80 each. An industrial temperature version, the LT8611IUDD, is tested and guaranteed to operate from a -40°C to 125°C operating junction temperature and is priced from $4.16. An automotive temperature version, the LT8611HUDD, is tested and guaranteed to operate from a -40°C to 150°C operating junction temperature and is priced from $4.41 each. All pricing is for 1,000 piece quantities and all versions are available from stock.