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AN33014UA Evaluation board (front side)
This is a two layer circuit board. The front side is shown below. (The back side is shown on the next page.)
SYNC input terminal
(external clock input)
RT resistor
If JP4 is selected,
RT pin connected 130kW.
This setting is Fsw = 490kHz.
(below setting can select by JP3 or JP5)
Select JP5:
Select JP3:
RT=330kW
RT=22kW
Fsw = 200kHz
Fsw = 2MHz
SW1
Enable control switch
Upper side (high): DCDC ON
Lower side (low): DCDC OFF
Input capacitor
VREG capacitor
SS, CT capacitor
VCC
GND
TL capacitor
2
Snubber circuit
Ferrite beads
MPZ1608S300A
R-RADJ
BT capacitor
CFB adjusting resistor
Coil
RSENSE
Current detect resistor
C-VOUT1, 2
Output capacitor
DCDC output pin
(sense pin / force
pin)
Output setting: 5V
JPFLAG
If you connect this jumper
switch, the FLAG pin will be
connected to VREG(4.9V) via
a 200kΩ-register.
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