EVAL-ADP1720_15 Datasheet, PDF (4/8 Pages) Analog Devices – Evaluation Board for the ADP1720

EVAL-ADP1720
EVALUATION BOARD CONFIGURATIONS
The ADP1720 evaluation boards come supplied with different
components depending on which version is ordered.
Components common to all versions are C1, C2, and J1.
ADP1720 ADJUSTABLE OUTPUT
Evaluation boards that come supplied with ADP1720 adjustable
output voltage option devices have the additional R1 and R2
resistors included. Figure 3 shows the schematic of this
evaluation board configuration.
R2
R1
V_IN
C1
ADP1720
ADJUSTABLE
1 ADJ
GND 8
2 IN
GND 7
3 OUT
GND 6
V_OUT
C2
4 EN
J1
GND 5
U1
Figure 3. ADP1720 Adjustable Output
The output voltage is set based on the following equation:
VOUT = 1.225 V (1 + R1/R2)
For example, if R1 = 15 kΩ and R2 = 10 kΩ, then VOUT
is 3.06 V.
ADP1720 FIXED OUTPUT
Fixed output voltage evaluation boards are available in 3.3 V
and 5 V options. For fixed output devices, J2 is inserted to
connect the GND/ADJ pin to ground. Figure 4 shows the
schematic of this evaluation board configuration.
ADP1720
V_IN
C1
1 GND
J2
2 IN
3 OUT
GND 8
GND 7
GND 6
V_OUT
C2
4 EN
J1
GND 5
U1
Figure 4. ADP1720 Fixed Output
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