San Diego, Calif.ROHM Electronics has introduced an H-bridge driver IC line, offering designers a simple upgrade path to pulse-width modulation (PWM) speed control using either analog or digital inputs.
The BD62xx series provides both a TTL-compatible interface to an external MCU as well as an internal VREF -PWM conversion circuit allowing implementation of energy-saving PWM control from an analog voltage input. The product line is offered in three maximum operating voltage classes (7 V, 18 V and 36 V) with current ratings in each class of 0.5 A, 1.0 A and 2.0 A to cover applications ranging from portable electronics to automotive, appliance and medical devices.
BiCMOS topology is used to optimize performance and minimize power consumption. The P-channel / N- channel output configuration eliminates the need for an internal charge pump and external capacitors to operate the high-side switch. Internal shut-down circuitry reduces standby current to less than 1µA.
All BD62xx H-bridge driver ICs include a complete suite of internal protection circuits, including over-voltage protection (OVP), under-voltage lock-out (UVLO), over-current protection (OCP) and high-temperature shutdown (TSD). Overlap (shoot-through) protection to prevent high currents during motor reversal or breaking is also built in. In addition, the devices are designed to withstand 4 kV ESD.
All products in the series come in low-profile surface-mount packages with maximum height ranging from 1.15 mm (SSOP) to 2.2 mm (HRP7). All devices are specified for -40 to 85°C operation.
ROHM Electronics, www.rohmelectronics.com