MM1837

This IC contains two operational amplifiers and achieves extremely low offset voltage with a single power supply. The input offset voltage and the temperature drift of the input offset voltage of these amplifiers are one digit less than those of our conventional products.

Outline

This IC comes with dual operational amplifiers and shunt regulator (2.5V) function.
It can be used for controlling the secondary side of AC adaptor.
It can also be used in a part of application circuit of our IC MM3460 for LED light.

1. Li-ion battery charger
2. AC adaptor
3. Reference voltage source
Op-amp unit
1. Input offset voltage Typ.0.2mV, Max0.9mV
2. Input bias current 30nA
3. Power supply current 0.6mA
4. Voltage gain 100dB
5. Common-mode signal rejection ratio 85dB
6. Power supply voltage rejection ratio 100dB
7. Output outflow current 35mA
8. Output inflow current 20mA
Shunt regulator unit
1. Reference voltage 2.5V
2. Minimum cathode current 0.4mA
3. Dynamic inpedance 0.4Ω