Описание
The NCS5651 is a high efficiency, Class A/B, low distortion power line driver. It is optimized to accept a signal from a Power Line Carrier modem. The device consists of two Operational Amplifiers (opamps). The output opamp is designed to drive up to 2 A peak into an isolation transformer or simple coil coupling to the mains. At an output current of 1.5 A, the output voltage is guaranteed to swing within 1 V or less of either rail giving the user improved SNR.In addition to the output amplifier, a small-signal opamp is provided which can be configured as a unity gain follower buffer or can provide the first stage of a 4-pole low pass filter.The NCS5651 offers a current limit, programmable with a single resistor, R-Limit, together with a current limit flag. The device provides two independant thermal flags with hysteresis : a thermal warning flag to let the user know the internal junction temperature has reached a user programmable thermal warning threshold and a thermal error flag that indicates the internal junction temperature has exceeded 150 °C.The NCS5651 has a power supply voltage range of 6-12 V. It can be shut down, leaving the outputs highly-impedant. The NCS5651 comes in a 20-lead QFN package (4x4x1 mm3) with an exposed thermal pad for enhanced thermal reliability.
- Rail-to-Rail : drop of only +/-1 V with Iout = 1.5A
- VBB Supply Voltage 6-12 V
- Flexible 4th-Order Filtering
- Current-Limit Set with One Resistor
- Diagnostic Flags Level Shitfted to VCC to Simplify Interface with External MCU- Thermal Warning Flag with Flexible Treshold Setting- Thermal Error flag and Shutdown- Overcurrent Flag
- Enable/Shutdown Control
- Extended Junction Temperature Range : -40 °C to +125 °C
- Small package : 20-pin 4x4x1 mm3 NQFP with Exposed Thermal Pad
- Optimized for Operation in the Cenelec A to D Frequency Band
- This is a Pb-Free Device
