BA6161N ROHM
Document overview
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Technical content
Features
1) Output changes are small against input voltage vari- ations. 2) Temperature compensation circuit provides stable output. 3) Reduced number of attached parts. Block diagram Pin descriptions
Regulator ICs BA6161N / BA6161F Absolute maximum ratings (Ta = 25/C0095C) Electrical characteristics (unless otherwise noted, Ta = 25/C0095C and Vin = 9.0V) Measurement circuit
Regulator ICs BA6161N / BA6161F Circuit operation A zener diode on the feedback pin provides reference voltage and compensates for temperature changes. Feedback current is fed from the zener diode to the oscil- lator. Blocking oscillation is provided by connecting the exter- nal coil L between the oscillator drive pin and the VIN pin. The potential at the oscillator drive pin can be raised by using this oscillation. The output voltage is constant be- cause the feedback current is always supplied to the os- cillation circuit. Application example Operation notes (1) When an output voltage greater than the reference output voltage (33.3V) is required, use a variable resistor (Murata RVG6P02-104M or equivalent product) with good temperature characteristics as shown in the ap- plication circuit. Make sure, however, that the voltage of the oscillator drive pin does not exceed 42V. (2) The coil to be connected between pins 2 and 3 should have the lowest possible DC resistance (under 10Ω ) and an inductance of 4.7mH (Sumida Electronics RC095-472K or equivalent product).
Regulator ICs BA6161N / BA6161F Electrical characteristics curves
External dimensions (Units: mm) 265 Regulator ICs BA6161N / BA6161F