Solenoid relay vdd 3 3 v 5 0 v vdd vpwr gnd out15 out0 out1 out2 out3 out4 out5 out6 out7 out8 out9 out10 out11 out12 out13 out14 vbat sopwr mosi so pwm pwm miso si cs sclk sclk rst rst 8.
I2c relay driver ic.
8 channel relay driver with integrated 5 v ldo and zero volt detection datasheet rev.
Microcontroller used in the project is stm32f103c8t6.
We don t sell the relay boards directly but they re available from multiple sources various vendors on amazon 1 2 sainsmart or even direct from china on ebay included are two 6p6c i2c connectors a female 20 pin dual row connector to attach to the relay board s header a.
How can a load switch extend your device s battery life.
Port a pins 0 1 2 3 of stm32 microcontroller are used as output pins.
Output control is via a spi port and offers convenient reporting of faults for open load or short to ground over load and over temperature conditions.
The hv9901 universal relay driver provides high efficiency driving for low voltage relays with supply voltages as high as 450v.
The ncv7240 is an automotive eight channel low side driver providing drive capability up to 600 ma per channel.
Its build on cortex m3 core.
5k pricing is for budgetary use only shown in united states dollars.
Relay driver ic uln2003 internal schematic diagram.
Analog integrated circuit device data 2 freescale semiconductor 33996 iinternal block diagram iinternal block diagram.
The first one is for providing power to internal control circuitry.
How and why you should use load switches for power sequencing.
The prices are representative and do not reflect final pricing.
Contact your local microchip sales representative or distributor for volume and or discount pricing.
The pin diagram of ic uln2003a is shown in the above figure which consists of 16 pins.
For example a relay with a 5v coil can be driven directly from the rectified 120 vac or 230 vac line.
Line driver pwm rst cs so vref.
Use our selection tool to compare and select the right ti i2c general purpose i o gpio device to expand the number of available i2c i o pins in your design.
The ic uln2003a comprises of 7 npn darlington pairs as shown in the internal schematic diagram and is typically used to switch inductive loads dissipates voltage spikes if any using suppression diode and to drive stepper motors.
With a broad portfolio offering different driver topologies high side low side and configurable switches a standardized spi register.
The i2c relay16 is designed to piggyback on commonly available chinese made boards with 16 spdt relays.
Pin 1 of port a is connected to input 3 pin 2 is connected to input 5 and pin 3 is connected to pin 7 of uln2003 relay driver.
