MB3825A Fujitsu Microelectronics, Inc., MB3825A Datasheet - Page 22

• Manufacturer Part Number: MB3825A
• Description: 6-ch DC/DC Converter ic With Synchronous Rectifier
• Manufacturer: Fujitsu Microelectronics, Inc.

22
MB3825A
Note :
Oscillator frequency : f
Output current setting resistance RB1 to RB6 should be connected to each channel as shown in Figure 5 below.
• For channel 1 and 3, connect the respective VB terminals to VCC (O) 1, 3 through the setting resistor RB.
• For channel 2, connect the VB2 terminal to VCC (O) 2 through setting resistor RB2.
• For channels 4 to 6, connect the respective VB terminals to VCC (O) 4, 5, 6 through setting resistor RB.
Figure 5. Output sink current setting pin connections
OSCILLATOR FREQUENCY SETTING
The oscillator frequency can be set by connecting a timing capacitor (C
resistor (R
f
OSC
(kHz)
T
) to the RT terminal (pin 21) .
C
T
(pF) R
1950000
OSC
T
(k )
MB3825A
VCC(O) 4, 5, 6
VCC(O) 1, 3
VCC(O) 2
VB1
VB3
VB2
VB4
VB5
VB6
T
) to the CT terminal (pin 22) and a timing
RB1
RB3
RB2
RB4
RB5
RB6