Exar
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Exar Corporation powers connectivity with an extensive array of power management, communications, and interface silicon solutions. Exar´s power management ICs are used in a variety of applications and include LDOs, DC/DC switching regulators, PWM controllers, charge pumps, and microprocessor supervisors. The products are designed for use together to a create complete power management systems but can also be used as standalone solutions. Exar also offers online design tools to help designers create customized solutions using Exar products.
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Exar PowerXR Power System ICs
The Exar XRP7704, XRP7740, and XRP7708 PowerXR power system ICs offer the low cost and flexibility of digital power management and control along with the robust power capabilities of analog switching power supplies. These Exar PowerXR power system ICs reduce development time and permit real-time power system adjustments. The XRP7708 is optimized to provide 8 Amps per channel capability while offering a pin and function compatible option to the 5Amp/channel XRP7704 and the 15Amp/channel XRP7740. The Exar XRP7704, XRP7708, and XRP7740 offer a wide input voltage range (6.5V to 20V) and output range (0.9V to 5.0V) with a built-in LDO for standby power. The XRP7714 has a 4.75V to 25V input voltage range. These power system ICs also offer power sequencing capability and integrated gate drivers.
Exar SP510 Multiprotocol Transceiver
The Exar SP510 is the industry's fastest (52 Mbps) single-chip multiprotocol serial transceiver.The Exar SP510 multiprotocol serial transceiver supports high-speed data traffic, leading industry interface standards, and adjustable logic level flexibility while also providing outstanding ESD protection. The SP510 highly integrated physical layer solution can be configured to support multiple serial protocol standards. This Exar multiprotocol serial transceiver incorporates 8 drivers and 8 receivers that can be adapted for either differential (V.11 or V.35) or single ended (V.28 and V.10) signaling. This Exar transceiver is ideal for a variety of applications, including data communication networks, telecommunication equipment, and secured data communication.
Exar XR3170E - XR3178E Transceivers
The Exar XR3170E - XR3178E family of RS-485 transceivers are designed for reliable, bidirectional communication on multipoint bus transmission lines. Each Exar XR317xE transceiver contains one differential driver and one differential transceiver. The XR3172E, XR3175E, and XR3178E are half-duplex devices. All other devices in the XR3170E - XR3178E family are full-duplex. These Exar transceivers comply with TIA/EIA-485 and TIA/EIA-422 standards and feature 3.3V single supply operation and high speed 20Mbps data rate. XR3170E - XR3178E transceivers offer 1/8th Unit Load (256 transceivers on bus) and are ideal for motor control and building automation applications. The devices are also designed for use in security systems, remote utility meter reading, and long or un-terminated transmission lines.
Exar XRP6840 Supercapacitor Flash LED Driver
The Exar XRP6840 Supercapacitor Flash LED Driver is a controlled-current, dual-cell supercapacitor charger and high power LED driver that operates from a standard lithium-ion battery. The Exar XRP6840 provides up to 4.3A of programmable Flash LED current and up to 600mA and 5.6V of programmable supercapacitor charging current and voltage. The Exar XRP6840 Supercapacitor Flash LED Driver with Tri-mode Charge Pump Architecture charges the stacked supercapacitor to the programmed output voltage with no more than 600mA drawn from the battery. A standard 2-line I²C serial interface allows the dynamic programming of LED currents in torch and flash modes. This supercapacitor Flash LED driver comes in a 2- and 3-channel version, supporting 440mA/2.15A per channel and 300mA/1.45A in torch/flash modes.
Exar XR17V352 / XR17V354 / XR17V358 PCIe UART
The Exar XR17V352, XR17V354, and XR17V358
single-chip, 2-, 4-, and 8-channel PCI Express (PCIe) UART
series is optimized for higher performance and low power. The Exar
XR17V352 PCIe UART serves as a single-lane PCIe bridge
to two independent enhanced 16550-compatible UARTs while the XR17V354
and XR17V358 serve as a single-lane PCIe to 4 and 8 independent
enhanced 16550 compatible UARTs, respectively. These Exar devices
are compliant to PCIe 2.0 Gen 1 (2.5GT/s). The XR17V352, XR17V354,
and XR17V358 PCIe UARTs have 16 multi-purpose I/Os, a 16-bit
general purpose counter/timer, and a global interrupt status register to
optimize interrupt servicing. Enhanced features of the XR17V352,
XR17V354, and XR17V358 include 256-bytes TX and RX FIFOs,
programmable Fractional Baud Rate Generator, Automatic Hardware or
Software Flow Control, infrared mode, data rates up to 25Mbps, and more.
These Exar devices are designed for use in next generation
point-of-sale systems, remote access servers, storage network
management, multi-port RS-232 / RS-422 / RS-485 cards, and factory
automation and process control.
Exar XRP7657 Non-Synchronous Step Down Converter
The Exar XRP7657 non-synchronous voltage mode PWM step down (buck) converter can provide a constant output current up to 2A and offers a wide 4.75V to 25V input voltage range that allows for single supply operations from industry standard 5V, 12V, and 24V power rails. The XRP7657 step down converter reduces overall component count and solution footprint with a 420 kHz constant operating frequency and integrated high side switch. This Exar device features 2% output setpoint accuracy, high efficiency, low ripple, and excellent line and load regulation. The enable function and soft start feature of the XRP7657 allow for controlled power up sequencing implementation. This Exar step down converter is ideal for use in distributed power architectures, point of load converters, and audio-video and medical equipment.
