FAN8025G3 Fairchild Semiconductor, FAN8025G3 Datasheet - Page 10

• Manufacturer Part Number: FAN8025G3
• Manufacturer: Fairchild Semiconductor

Specifications of FAN8025G3

• Operating Temperature Classification: Commercial
• Package Type: SSOPH-375SG2
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 13.2V
• Lead Free Status / Rohs Status: Compliant

FAN8025G3
4. Current feedback channels(channel 4 & 5)
• The reference voltage(ref) is given externally through pin 22.
• The input OP-amp output signal is amplified by (20K/10K) times and then fed to the current feedback amplifier.
• The current feedback amplifier compares the output current sensed input and command input then makes the controlled
• The DC gain of current feedback amplifier and power amplifier is unity, that is 1 [A/V]. Users can change the gain by
5. Channel 2 & 3 schematic
• The reference voltage(ref) is given externally through pin 22.
• The input OP-amp output signal is amplified by (12K/10K) times and then fed to the power amplifier. The gain of power
10
Command
output to eliminate delay effect of the load. Please refer to the application note for more information about current feedback
theory(http://www.fairchildsemi.com/an/AN/AN-4109.pdf).
adding external resistor at the command input.
amplifier is 4 so the total max gain of channel 2 and 3 is 8.
Command
10k
ref
20k
10k
ref
7.5k
20k
7.5k
current amp
Rext
Cext
power amp
X2
power amp
Sensing resistor
M
actuator