LTC3588-2_10 Datasheet, PDF (4/18 Pages) Linear Technology – Piezoelectric Energy Harvesting Power Supply with 14V Minimum VIN

LTC3588-2
Typical Performance Characteristics
Input I_Q in UVLO vs V_IN
1800
1600
125°C
1400
1200
1000
800
600
85°C
25°C
–40°C
400
200
0
0 2 4 6 8 10 12 14 16
V_IN (V)
35882 G01
Input I_Q in Sleep vs V_IN
3600
3200
125°C
2800
2400
2000
85°C
1600
25°C
1200
–40°C
800
14
15
16
17
18
V_IN (V)
35882 G02
UVLO Rising vs Temperature
16.4
16.2
16.0
15.8
15.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
35882 G03
UVLO Falling vs Temperature
14.4
14.2
14.0
13.8
13.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
35882 G04
V_SHUNT vs Temperature
21.2
21.0
20.8
20.6
20.4
20.2
I_SHUNT = 25mA
20.0
19.8
I_SHUNT = 1mA
19.6
19.4
19.2
19.0
18.8
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
35882 G05
Total Bridge Rectifier Drop
vs Bridge Current
1800 _{|VPZ1 – VPZ2| – VIN}
1600
1400
1200
–40°C
1000
85°C
800
25°C
600
400
200
0
1µ
10µ 100µ 1m 10m
BRIDGE CURRENT (A)
35882 G06
Bridge Leakage vs Temperature
20
V_IN = 18V, LEAKAGE AT PZ1 OR PZ2
18
16
14
12
10
8
6
4
2
0
–55
–10
35
80 125 170
TEMPERATURE (°C)
35882 G07
4
Bridge Frequency Response
2.0
4V_P-P APPLIED TO PZ1/PZ2 INPUT
1.8 MEASURED IN UVLO
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
35882 G08
3.45V Output vs Temperature
3.55
3.50
SLEEP THRESHOLD
3.45
3.40
WAKE-UP THRESHOLD
3.35
3.30
3.25
3.20
PGOOD FALLING
3.15
3.10
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
35882 G09
35882fa