Fujitsu ASSP Product
6/14
Power Management
MB39C026 Evaluation Board
6. Circuit Diagram
6. Circuit Diagram
7. Circuit Parts List
7. Circuit Parts List
MB39C022-EVB03 Rev1.0
EN2
1
VIN1
8
VIN2
2
POR
4
EN1
7
GND1 10
LX 9
FB 6
VOUT2 3
GND2 5
MB39C026
(SON-10)
VIN
PGND
POR
PGND1
VO1
VO2
AGND
C1
4.7uF
C4
1uF
C5
1uF
C2
4.7uF
R4
1M
R1
1M
R2
1M
JP3
Short
L1
2.2uH
R5-2
0k
R5-1
300k
or 499k
JP4
Short
R6
100k
R7
0R
C3
22pF
PGND
AGND
AGND
AGND
AGND
AGND
PGND
R3
1M
: No Mount
C6
4.7uF
EN1
EN2
JP1
JP2
For VO1=1.2V: R5-1=300k
For VO1=1.8V: R5-1=499k
Count Designator
Description
Part Number
Manufacturer
1
U1
Power IC
MB39C026
Fujitsu
2
C1, C2
Capacitor 4.7uF (10V)
C1608JB1A475K
TDK
1
C3
Capacitor 22pF (50V)
C1608CH1H220J
TDK
2
C4, C5
Capacitor 1uF (16V)
C1608JB1C105K
TDK
1
L1
Inductor 2.2uH RDC=76m
VLF4012AT-2R2M1R5
TDK
3
R1, R2, R3
Resistor 1M (1%)
-
-
Resistor 300k (1%) for 1.2V output
-
-
Resistor 499k (1%) for 1.8V output
2
R5-2, R7
Resistor 0R
-
-
1
R6
Resistor 100k (1%)
-
-
9
VIN, VO1, VO2,
POR, PGND, PGND1,
AGND, EN1, EN2
Connecting Pins
WT-2-1
MacEight
No Mount JP1, JP2
Header 1X2
-
-
No Mount R4
1M
-
-
No Mount C6
Capacitor 4.7uF (10V)
-
-
Short
JP3, JP4
Jumper (pattern short)
-
-
TDK: TDK Corporation
R5-1
1
