TS3300 Demo Board
To evaluate the TS3300 the following steps are to be
performed:
1) Connect the battery positive terminal to the test
point labeled BOOST. Connect the negative
terminal of the battery to the test point labeled
GND.
Figure 5:
Setting the Anti-Crush
with a Voltage Divider
TM
Voltage
Using the following equation to solve for R1 for a
given R2 value, the output voltage can be set:
1
TI
S
TM
0.3 2
2
2) To monitor the boost regulator output voltage,
connect the positive terminal of the voltmeter to
the test point labeled BOOST_OUT. Connect the
negative terminal of the voltmeter to the test point
labeled GND. The output voltage should be
approximately 3.02V.
3) To monitor the LDO output voltage, connect the
positive terminal of the voltmeter to the test point
labeled BOOST_OUT. Connect the negative
terminal of the voltmeter to the test point labeled
GND.
The
output
voltage
should
be
approximately 1.82V.
4) To shutdown the boost regulator only, set
to a
high
state via jumper J1. The output will drop
to approximately 1.16V.
5) To enable the LDO internal switch/FET, set SW
EN to a
high
state and REG EN to a
low
state via
jumper J2 and J3, respectively. The LDO output
voltage should be equal to the boost output
voltage.
6) To shutdown the LDO only, remove the battery.
Then, remove resistor R5. Solder one side of a
wire to the bottom side of capacitor C7. Now
solder the other side of the wire to the
BOOST_OUT test point. The LDO output voltage
should be approximately 0V.
0.3 2
To set a 0.8V output voltage with R2 = 1.37MΩ, R1 is
calculated to be 1.42MΩ. A 1% standard resistor
value of 1.37MΩ is selected. This results in an anti-
TM
crush voltage of 784mV. The
anti-crush
voltage is
to be set above the minimum input voltage
specification of the TS3300. Refer to the TS3300
product datasheet “ pplications Information” section
for more details.
QUICK START PROCEDURE
Required Equipment
TS3300 Demo Board
1.2V Battery
Two Digital Multimeters
Solder Iron ( for LDO shutdown only)
Figure 6. TS3300 Demo Board Circuit
TS3300DB r1p0
Page 3
RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
