Low-power reference voltage generation circuit with current consumption of only 30 UA - News - Global IC Trade Starts Here Free

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin
1.5PF SOT23-6 Low Capacitance 5V Breakdown Voltage 6V SRV05
MOS power IC full range
Shunluo Inductance Power Inductor SWPA Series First Class Agent

Circuit function

A reference voltage generating circuit is fabricated using an ordinary Zener diode or a temperature-compensated Zener diode. Current consumption is up to 10MA. For battery-operated electronic instruments, if the current consumption is large and the power consumption of the power supply is too large, it is uneconomical, so a circuit with a small driving current and good stability is required. This circuit is a combination of a bandgap reference diode that operates at a small bias current and a low current OP amplifier, consuming only 30 UA.

Circuit working principle

The LM385-2.5 is a 20 UA reference voltage generator with a terminal voltage of 2.5V ± 3% and a temperature coefficient of 20 PPM / ° C.

In this circuit, the OP amplifier is only used as a non-inverting amplifier. To make the output voltage +10V, the voltage amplification factor must be 4 times and R3=R2(A-1). The feedback resistor cannot consume power, so take a high resistance value, R3. = 1.5M, when R2 = 500K, the current consumption is 2UA. In the LM385, R1=500K, the current flowing through is 25UA, the OP amplifier uses the current limiting resistor R4 to reduce the current to several UA, and the entire circuit 4250 is VOO=±1.5V. The OP amplifier that can work is suitable for battery driving.

Safety Light Curtain

SDKELI has been manufacturing safety light curtains for more than 20 years. Its brand [SHANGSHOU" and [SDKELI" owns largest market share in China because of reliable quality and proper price. All the safety light curtains are type 4 with CE certificate.

Safety Light Curtain,Safety Curtain,Laser Safety Light Curtain,Safety Optic Light Curtain,Security Light Curtain,Press Brake Safety Light Curtains

Jining KeLi Photoelectronic Industrial Co.,Ltd , https://www.sdkelien.com