Allegro MicroSystems, Inc.
Marlborough, MA 01752
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DC Motor Driver comes in 2.0 x 2.0 mm package.
With input voltage range of 3.0-5.5 V, bi-directional Model A3903 produces output currents up to 500 mA. Output full-bridge incorporates source side linear operation to allow constant voltage supply across motor coil. Logic input pins are provided to control motor direction of rotation, brake, and standby modes and to allow optional PWM of sink drivers. Housed in 8-lead DFN package, Pb-free...
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Current Sensors feature isolation voltage up to 2,100 Vrms.
Bidirectional ACS712 and unidirectional ACS713 hall-effect current sensors feature integrated shield that attenuates high dv/dt transients across leadframe. Filter pin addresses output noise and low current accuracy without attenuation effects of external RC filter. Suited for motor control applications, devices are offered in SOIC8 package.
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Dual Full-Bridge MOSFET Driver is digitally programmable.
Model A3985 powers bipolar 2-phase stepper motors and 2-phase brush/brushless dc motors through external N-channel power MOSFETs at supply voltages ranging from 12-50 V. Driver ensures gate-source voltage of high-side and low-side external MOSFETs are above 10 V. Two serially accessible registers provide digital control, while internal circuit protection provides thermal shutdown with hysteresis...
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LED Driver controls LED luminance with PWM control.
Offering wide range of output currents, Model A6280 3-bit constant current LED driver minimizes components needed to drive LEDs with large pixel spacing. Several drivers can be chained together and controlled by 4 control signals (clock, serial data, latch, and output enable), and each input has buffered outputs on chip. VIN pin can be tied to voltage supply bus to eliminate need for separate...
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PWM Motor Driver has quad DMSO full-bridge architecture.
Supplied in 6 x 6 x .90 mm 36-pin QFN package or 7 x 7 mm 48-pin LQFP, A3988 can drive up to 2 stepper motors or 4 dc motors. Fixed off-time PWM current regulators, along with 2-bit nonlinear DACs, allow stepper motors to be controlled in full, half, and quarter steps or dc motors in forward, reverse, and coast modes. Each full-bridge output is rated up to 1.2 A and 36 V, and internal synchronous...
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PWM Motor Driver has dual full-bridge architecture.
Supplied in 5 x 5 x 0.90 mm package, A3969 drives both windings of 2-phase bipolar stepper motor in portable and limited board space applications. It includes 2 H-bridges capable of continuous output currents of Ã-
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Step Down Regulators suit general purpose applications.
Including integrated power DMOS switch, Models A8698 and A8697 are targeted at applications requiring 8-25 V input voltage rating and 3 A (A8698) or 4 A (A8697) output current. Regulation voltage is set by external resistors to output voltages as low as 0.8 V. They feature internal compensation and logic level enable pin which can shut down device and put it into low quiescent current mode for...
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Charge Pump IC drives WLEDs for backlight and flash/torch.
Supplied in 3.0 x 3.0 x 0.75 mm MLP-16 package, A8530 can drive 4 display backlight and 2 flash/torch/video mode white LEDs (WLEDs). Control scheme (1x, 1.5x, and 2x) allows for delivery of well-matched LED current, regulated over entire range of Li+ battery voltage to provide uniform intensity. Each backlight channel can be driven with up to 30 mA, while each flash/torch channel can be driven...
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Microstepping Motor Driver has 50 V rating.
Offering output drive capability of 50 V and Ã-
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PWM Motor Driver offers overcurrent protection.
Designed for PWM current control of bipolar microstepping motors, Model A3992 DMOS full-bridge motor driver is capable of continuous output currents to Ã-
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