亚博棋牌游戏Allegro MicroSystems released a new bridge type low voltage dc motor driver IC
On September 11, 2012
亚博棋牌游戏Allegro MicroSystems released a new bridge type low voltage dc motor driver IC
On September 11, 2012
With internal PWM current reference
Located in Worcester, Massachusetts- 亚博棋牌游戏Allegro MicroSystems released new full bridge dc motor drive, can provide a continuous output current of one ampere, working voltage of 2.5 to 9 V.Allegro 'A3918Is low voltage motor drives the new members of the series of products, can provide single way bridge type option, all existing complementary Allegro "series double road bridge crane performance of the equipment.Internal function such as PWM current reference only allow users to use resistor choose peak values of river closure.Single power supply and simple logical interface to make the product be the ideal product in single lithium ion battery applications.
A3918 has a unique design, it includes a secondary charge pump, can ensure that drivers in the low R in the power supply voltage rangeDS (open)(power supply voltage range of 2.5 V to 9 V).This can make the switch resistance avoid elevated in gate drive voltage was reduced, thus significantly increases when the battery voltage is low battery life.The effect in the bridge load and heat and power consumption under the condition of small.For a child or locked rotor, its built-in fixed downtime PWM timer according to the current induced resistance to add set peak current.Flow tag is used to output the current peak current in the motor winding notifies the user.
A3918 mainly used in consumer, industrial and medical market oriented at low voltage battery run of motor control.These applications include sales terminals, game controller, USB powered devices, digital cameras, robots, valve control and pump, etc.
A3918SESTR -t the 16 - needle, 3 mm * 3 mm, 0.75 mm nominal total height QFN packages, bare bonding pad in order to enhance heat dissipation.The packaging products for lead (Pb), and 100% fog box tin plating pin.