Precision Programmable Reference Integrated Circuit IC
The SGM431x is a precision programmable shuntvoltage reference that can be used in manyapplications. It is a three-terminal adjustable-outputdevice that can keep stable under all capacitive loads.It requires two external resistors in application to set theoutput voltage is to any value between VREF and 36V.All versions have a maximum operating current of100mA.The SGM431x features low dynamic impedance, lownoise, and low temperature coefficient to ensure astable output voltage over a wide range of operatingtemperatures and currents. These high performancesmake it very suitable for multiple applications, such asprecision audio components and flyback switchingpower supplies.The SGM431 is available in Green SOIC-8, SOT-23,SOT-89-3, SOT-23-5 and SC70-6 packages. TheSGM431B is available in Green SOIC-8, SOT-23,SOT-89-3 and SOT-23-5 packages
Key Features
● Adjustable Output Voltage: VREF to 36V
● Sink-Current Capability: 1mA to 100mA
● Reference Voltage Tolerance at +25℃:
SGM431: 1% (Standard Grade)
SGM431B: 0.5% (B Grade)
● Output Impedance: 0.1Ω (TYP)
● Temperature Drift: 5mV (TYP)
● High Stability under Capacitive Load
● Low Output Noise
● -40℃ to +125℃ Operating Temperature Range
● SGM431 is available in Green SOIC-8, SOT-23,SOT-89-3, SOT-23-5 and SC70-6 Packages
● SGM431B is available in Green SOIC-8, SOT-23,SOT-89-3 and SOT-23-5 Packages
Applications
Portable, Battery-Powered Equipment
Voltage Monitoring
Flyback Switching Power Supplies
Instrumentation
Product Testing
Precision Audio Components
Typical Application
Pin Configurations
Product Selection Guide
| Part Number | Vo | Reference
| Max (%) | | | | | | | | Features |
| SGM431 | 2.5 | Adj | 0.5,1 | 2.5 | 36 | 400 | 60 | -40 to +125 | 100 | SOIC-8,SOT-23,SOT-89-3,SOT-23-5,SC70-6 | Adjustable Precision Shunt Regulator |
| SGM431VB | 1.24 | Adj | 0.5 | 1.24 | 18 | 65 |
| -40 to +125 | 70 | SOT-23 | Adjustable Precision Shunt Regulator |
| SGM432 | 2.5 | Adj | 0.5,1 | 2.5 | 36 | 400 | 60 | -40 to +125 | 100 | SOT-89-3,SOT-23,SOT-23-5 | Adjustable Precision Shunt Regulator |
| SGM4025 | 1.25,2.048 | Fixed | 0.1 |
|
| 230† | 30 | -40 to +125 | 10 | UTQFN-1.5×1.5-8L | 30ppm/℃, 230μA, CMOS Voltage Reference |
| SGM4027 | 2.048,2.5 | Fixed | 0.1 |
|
| 245† | 35 | -40 to +125 | 10 | SOT-23 | 35ppm/℃, 245μA, CMOS Voltage Reference |
| SGM4029 | 2.5,3.0,4.096 | Fixed | 0.1 |
|
| 1450† | 10 | -40 to +125 | 10 | SOIC-8 | Low Noise, Low Drift, Precision Voltage Reference |
| SGM4040B | 2.5 | Fixed | 0.2 |
|
| 48 | 20† | -40 to +125 | 15† | SOT-23 | Micro-Power, Precision Shunt Voltage Reference |
| SGM4051C | 1.2,Adj | Fixed,Adj | 0.5 | 1.206 | 10 | 45 | 20† | -40 to +125 | 12† | SC70-5,SOT-23 | Micro-Power, Precision Shunt Voltage Reference |
Note: † Typical Values @ 25℃
Integrated circuits (ICs) serve as the foundation of modern electronics, offering small size, low power consumption, strong performance and high reliability. They are widely used in consumer electronics, industrial applications, communications, automotive electronics, medical equipment, and aerospace/defense systems.
Uchi Electronics provides high-performance analog and mixed-signal processing solutions for industrial automation, new energy, automotive, communications, computing, consumer electronics and medical equipment applications.
This solution demonstrates the application of integrated circuits in the base station RF power supply board. For assistance selecting the right product, please contact our technical support team.
