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With the implementation of the "carbon peak" and "carbon neutrality" goals, the automotive industry, as one of the major sources of carbon emissions, is developing towards energy conservation and emission reduction. Whether it is new energy vehicles or traditional fuel vehicles, the requirements for automotive power management such as improving charging speed, reducing process losses, avoiding high temperatures, and battery protection are becoming increasingly higher. In addition, the development of electrification and intelligence in automobiles has made LDO particularly prominent in the design of in vehicle power supplies, especially in applications such as in vehicle power supplies, in vehicle information and entertainment systems, vehicle control, and autonomous driving.
The SC71701Q/SC71702Q series of low voltage drop regulators with current detection function newly launched by Nanxin Technology are specifically designed for automotive power supply systems and can be fully applied in intelligent cockpit systems such as active antennas, camera modules and sensors, and microphones.
New Product Introduction
SC71701Q/SC71702Q is a single channel/dual channel antenna low-voltage regulator with current detection function for vehicles. It supports a wide input voltage range of 4.5V to 36V and can output voltages from 1.5V to 22V.
SC71701Q/SC71702Q conducts comprehensive fault diagnosis through current detection and error indication pins. The current detection pin CSX supports multiplexing, which can accurately sample the output current size and comprehensively diagnose different faults. The current limit of a single channel can be adjusted by the peripheral resistance on the ILIMX pin, and the maximum current output of a single channel is 400mA.
SC71701Q/SC71702Q supports timely protection and diagnosis of various faults such as output overcurrent, output short circuit to ground, output short circuit to battery, reverse current, overheating, etc., ensuring equipment safety. At the same time, the high precision of small current output sampling in this scheme (± 10% @ 5mA, ± 50% @ 1mA) can ensure accurate sampling under small current output.
In addition, the SC71701Q/SC71702Q series also offers a fault self recovery version for selection, which can be output again without the need to re enable the chip after the fault is removed.
VIN=14V, VOUT1=8.5V, VOUT2=5V Short to battery Protection (AutoRetry Version)
VIN=14V, VOUT1=8.5V, VOUT2=5V Short to battery Protection (Latch Version)
VIN=14V, VOUT1=8.5V, VOUT2=5V Current Sense function multiplexing
Product features
Compliant with AEC-Q100 automotive application standards:
Temperature level 1: TA range: -40 ° C to 125 ° C
Wide input voltage range from 4.5V to 36V, with 40V load drop capability
Excellent output performance
Adjustable output voltage range from 1.5V to 22V
? Each channel has a current capacity of up to 400mA
Single channel and dual channel LDO adopt the same packaging
Adjustable output current limit size
High current detection accuracy, capable of detecting extremely light load conditions: ± 10% at 5mA load and ± 50% at 1mA load
High Power Rejection Ratio (PSRR): Typical value of 70dB at 100Hz
The voltage drop at a load of 100mA is 500mV (maximum value)
Power switch mode when FB is short circuited to GND
Comprehensive diagnostic and integrated protection functions
Input undervoltage lockout (UVLO)
Battery reverse polarity protection
Reverse current protection (RCP)
Output battery short circuit (STB) protection
? Output inductive load clamping
Output Short Circuit Protection (SCP)
? Thermal shutdown (TSD)
? HTSSOP-16 packaging
The launch of the SC71701Q/SC71702Q series LDO is another expansion of Nanxin's layout in the automotive electronics field. At present, the automotive product line plan of Nanxin Technology has covered many scenarios such as high edge drive, efuse, axle drive, DC-DC, LDO, PMIC, etc. Multiple products have been highly recognized by domestic and foreign vehicle manufacturers and have gradually been mass-produced. In the automotive electronics market, Nanxin will further increase research and development investment, continue product innovation, build an independent core technology matrix, establish a complete product development, quality management, and production capacity guarantee system, and bring more vitality to the automotive industry and domestic semiconductor industry. Welcome to inquire.
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