According to the characteristics of Shanghai Siproin Microelectronics product series , which could be widely used in smart meters  involving leakage protection, street light detection, sockets, charging piles, intelligent electrical distribution boxes and other meter-related categories. Here we recommend the main products:

Power Management:

1.SSP9451   40V/600mA Step-Down DC/DC

The SSP9451 is a high frequency (1.8MHz) step-down switching regulator with integrated internal high-side high voltage power MOSFET. It provides single 0.6A(or less) highly efficient output with current mode control for fast loop response. The wide input range(4.2V to 40V) accommodates a variety of step-down applications under mobile environment input conditions. Low shutdown mode quiescent current of 1μA is suitable for battery-powered applications. High efficiency at light load condition is achieved by scaling down the switching frequency to reduce the switching and gate driving losses. The frequency folding technique helps prevent the inductance current from running out of control at startup. Hot shutdown provides reliable, fault tolerant operation.

2.SSP7785/SSP7786/SSP7786A Off-Line, Inductor less AC Input Linear Regulators

SSP7785/SSP7786/SSP7786A are compact, inductor-less design offline linear regulator series with integrated 650V power MOSFET, output voltage 5V/3.3V/2.7V in three versions with 2% accuracy, wide input voltage range: 80~305V AC, package type SOP-8, DIP-8.

SSP7785 output maximum load 10mA, package ESOP8

SSP7786 can be two outputs, the other one is 0.66Vout, the total output load maximum 30mA

SSP7786A One way output, maximum output load 30mA

3.H78L05/H78L12 30V/100mA Three-terminal Regulated LDO

H78L05/H78L12 are commonly used as low-cost three-terminal voltage regulator circuits in power meters with 5% accuracy in SOT89-3 and TO92 packages.

4.SSP79XX Series High Voltage Low Power LDO

SSP79XX series is a middle and high end LDO developed by Shanghai Silicon Power, the withstand voltage is up to 40V or more, the quiescent current is less than 2uA, the precision is 2%, the temperature drift is less than 50ppm, the maximum output current of the series products is from 300mA~1A, and the products are packaged in SOT89-3, SOT223, and TO252 packages.

5.SSP809 High Precision Low Power Voltage Detection Circuit

SSP809 input voltage up to 10V, typical input 1.1~7.5V, detection voltage optional 2.63V/2.93V/3.08V/4.00V/4.38V, output CMOS and NMOS two optional, accuracy of 2%, quiescent current less than 2uA, SOT23 package.

485 Communication

SSP485 Polarity Half-Duplex RS-485/RS-422 High Speed Communication Transceiver SSP485 is a half-duplex RS-485/RS-422 high-speed communication transceiver to meet the national network specification, ESD protection greater than 15,000 volts, transmission rate greater than 500Kbps, the receiver has 1/8 unit load input impedance, the bus can be connected to as many as 256 transceivers, -7V to +12V common-mode input voltage range, 5V single power supply, SOP8 package. SOP8 package.

Magnetic Retention Relay Driver SSP8023

1.SSP8023A

SSP8023A is a pure MOSFET implementation of the magnetic retention relay driver circuit, compared with the ordinary BJT transistor circuit with lower power consumption, quiescent current <10nA, withstand voltage up to 50V, input high and low conversion level of 2.6V, drive internal resistance of about 12 ohms, typical drive current of 400mA, SOP8 package.

2.SSP8023D

SSP8023D is a Bipolar process to achieve the magnetic retention relay driver circuit, withstand voltage up to 70V, the recommended operating voltage of 30V or less, the typical operating power of 5W (SOT23-6), the limit of power 10W (SOP8). Package forms are SOT23-6, SOP8.

Metering Circuit

1.SSP1855 single-phase high-precision power metering circuit, compatible with ADE7755

2.SSP1852 three-phase high-precision power metering circuit, compatible with  ADE7752

3.SSP1837 single-phase socket meter metering circuit with built-in clock

SSP1837 is a wide-range (input dynamic operating range of 2500:1) single-phase multifunctional power measurement chip, SSP1837 can measure single-phase active energy, active power, current and voltage RMS and other parameters, for single-phase socket meter, single-phase socket, smart home appliance control circuits, and other applications, with a high cost-effective. Chip built-in oscillator circuit, clock about 2MHz, chip single working power supply 3.3V, low power consumption of 10mW. package form SOP8.

4.SSP1839 built-in clock single-phase multi-function calibration-free metering circuit

SSP1839 integrated 3-way high-precision Sigma-Delta ADC, capable of measuring current, voltage RMS, active power, active electrical energy and other parameters, can output fast current RMS (for leakage monitoring or over current protection), as well as temperature detection, waveform output, etc., through the UART / SPI interface to output the data, to fully meet the smart sockets, smart home appliances, Single-phase multi-function power meter, electric bicycle charging pile and big data collection of power consumption information. Batch factory gain error of less than 1%, built-in oscillation circuit, clock about 4MHz, chip single working power supply 3.3V, low power consumption 10mW, SSOP20L/SOP16 package.

5.SSP1840 built-in clock single-phase multi-function calibration-free metering circuit

SSP1840 integrates 2 high-precision Sigma-Delta ADCs, which can measure current, voltage RMS, active power, active electric energy and other parameters, and can output fast current RMS (for leakage monitoring or overcurrent protection), as well as temperature detection, waveform output and other functions. It outputs data through the UART/SPI interface, which can fully meet the needs of smart sockets, smart home appliances, single-phase multi-function energy meters, electric bicycle charging piles and electricity consumption information big data collection. Built-in oscillation circuit, clock about 4MHz, chip single working power supply 3.3V, low power consumption 10mW, TSSOP14 package.

In conclusion , Siproin provides different kinds of IC chips covering multiple functions , please visit our product categories to see more details .