Datasheet

Buck/Boost Converter PICtail™ Plus Daughter Board User’s Guide
DS70336A-page 54 © 2008 Microchip Technology Inc.
FIGURE 1-2: DAUGHTER BOARD SCHEMATIC 1 OF 5
VOUT1
Stage 1 Buck
Dig Controlled Load
D
G
S
D
G
S
D
G
S
U1
LM5101
TX1
CST1_060L
Q1
FDS6298
Q2
FDS6298
C6
220uF 25V Elec
R3
DNP
Q3
BSR14_SOT23
R4
1k
R5
20R 1% 1/8W
D1
BAS16
R6
20k 1% 1/8W
R7
2.2k 1% 1/8W
C7
2.2nF 25V
D2
BAS16
R8
22R 1% 1/8W
C9
0.1uF
C12
0.1uF
9VANA_GND
D4
BAS16
R9
22R 1% 1/8W
R10
5.1k
C10
150uF 6.3V
TANT
C11
150uF 6.3V TANT
R11
3.3k
R12
5k
J4
Current Sense1
Vin
+3.3V_DIG
9VANA_GND
9VANA_GND
9VANA_GND
9VANA_GND
Voltage FB Buck1
+9V
R39
1k
R40
5.1k
Q11
BSR14_SOT23
R41
10k
VIN
R42
1k
R43
5.1k
Q13
FDS6692A
R44
5R 5W
R46
DNP
TP8
Buck1+
TP9
GND
D15
Schottky
9VANA_GND
9VANA_GND
9VANA_GND
9VANA_GND
D11
LED_0805
R57
10k
9VANA_GND
J11
C29
4.7uF 25V
D3
Diode_DO-214
Q12
BSR16
C8
0.1uF
L3
10uH
R32
3.3K
9VANA_GND
R33
3.3K
R37
470R
Load
V
OUT1
DNP
VOUT1
A
A
B
A
B
B
A
B
A
B
A
B
B
A
A
B
A
B
A
B
BA
C2
470pF
BA
A
B
AB
AB
A
B
A
B
A
B
PWM1H
PWM1L
AB
AB
AB
A
B
A
B
AB