Datasheet

Schematic of the EVM
2-2
2.1 Schematic of the EVM
Figure 2–1. Schematic of the EVM
5
3
46
1
2
V
I
Venable
GND
V
O
C2 0.22 µF
C3
2.2 µF
C1
2.2 µF
U1
REG710
For all necessary signals there are single-pin connectors on the board. To
operate the board, connect a power source with the appropriate voltage level
between V
IN
and GND.
A pullup resistor at EN may be added to ensure that the device starts without
a signal applied to the EN-pin. Connect EN to GND to disable the device. In
this state the supply current of the IC decreases to < 0.01 µA. When the EVM
is used with the pullup resistor, R1, be aware that this resistor draws more
current than the device itself. For operating the device in low current mode, this
resistor has to be removed.
An additional GND-pin has been added for your convenience.
C4 to C6 are 0805-size SMD-footprints. These parts are not necessary for
operation and have only been added for test purposes. They can be used as
test points or to easily increase the value of a capacitor by adding an other one
in parallel.
Table 2–1.Bill of Materials
Reference Part Description
U1 REG710 Buck-boost charge pump IC
C1, C3 2.2 µF/6.3V; 0805 Input and output capacitors
C2 0.22 µF/16V; 0805 Pump capacitor
R1 1 MΩ; 0805 Optional pullup resistor
C4 to C6 0805 Footprint Additional capacitors for test purposes