LTC3331_15 Datasheet, PDF (16/34 Pages) Linear Technology – Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger

LTC3331
OPERATION
Modes of Operation
The following four tables detail all programmable settings
on the LTC3331.
Table 1. Output Voltage Selection
OUT2
OUT1
OUT0
V_OUT
0
0
0
1.8V
0
0
1
2.5V
0
1
0
2.8V
0
1
1
3.0V
1
0
0
3.3V
1
0
1
3.6V
1
1
0
4.5V
1
1
1
5.0V
Table 2. FLOAT Selection
LBSEL FLOAT1 FLOAT0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
FLOAT
3.45V
4.0V
4.1V
4.2V
3.45V
4.0V
4.1V
4.2V
CONNECT
2.35V
3.03V
3.03V
3.03V
2.85V
3.53V
3.53V
3.53V
DISCONNECT
2.04V
2.70V
2.70V
2.70V
2.51V
3.20V
3.20V
3.20V
Table 3. I_{PEAK_BB} Selection
IPK2
IPK1
IPK0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
I_LIM
5mA
10mA
15mA
25mA
50mA
100mA
150mA
250mA
Table 4.UVLO Selection
UVLO
UV3
UV2
UV1
UV0
RISING
0
0
0
0
4V
0
0
0
1
5V
0
0
1
0
6V
0
0
1
1
7V
0
1
0
0
8V
0
1
0
1
8V
0
1
1
0
10V
0
1
1
1
10V
1
0
0
0
12V
1
0
0
1
12V
1
0
1
0
14V
1
0
1
1
14V
1
1
0
0
16V
1
1
0
1
16V
1
1
1
0
18V
1
1
1
1
18V
L_MIN
1000µH
470µH
330µH
220µH
100µH
47µH
33µH
22µH
UVLO
FALLING
3V
4V
5V
6V
7V
5V
9V
5V
11V
5V
13V
5V
15V
5V
17V
5V
16
For more information www.linear.com/LTC3331
3331fb