LTC3331_15 Datasheet, PDF (4/34 Pages) Linear Technology – Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger

LTC3331
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 2). V_IN = 5V, BAT_IN = BAT_OUT = BB_IN = 3.6V,
SHIP = OV, SCAP = 0V unless otherwise specified.
SYMBOL
V_OUT
I_{PEAK_BB}
PARAMETER
Regulated Buck/Buck-Boost Output
Voltage
PGVOUT Falling Threshold
Buck-Boost Peak Switch Current
Available Buck-Boost Current
Buck-Boost PMOS Input and Output
Switch On-Resistance
Buck-Boost NMOS Input and Output
Switch On-Resistance
CONDITIONS
1.8V Output Selected
Sleep Threshold
Wake-Up Threshold
2.5V Output Selected
Sleep Threshold
Wake-Up Threshold
2.8V Output Selected
Sleep Threshold
Wake-Up Threshold
3.0V Output Selected
Sleep Threshold
Wake-Up Threshold
3.3V Output Selected
Sleep Threshold
Wake-Up Threshold
3.6V Output Selected
Sleep Threshold
Wake-Up Threshold
4.5V Output Selected
Sleep Threshold
Wake-Up Threshold
5.0V Output Selected
Sleep Threshold
Wake-Up Threshold
As a Percentage of V_OUT Target (Note 5)
250mA Target Selected
150mA Target Selected
100mA Target Selected
50mA Target Selected
25mA Target Selected
15mA Target Selected
10mA Target Selected
5mA Target Selected
I_{PEAK_BB} = 250mA, V_OUT = 3.3V
IPK[2:0] = 111
IPK[2:0] = 110
IPK[2:0] = 101
IPK[2:0] = 100
IPK[2:0] = 011
IPK[2:0] = 010
IPK[2:0] = 001
IPK[2:0] = 000
IPK2 = 1
IPK2 = 0
MIN TYP MAX UNITS
l
1.806 1.872
V
l 1.728 1.794
V
l
2.508 2.575
V
l 2.425 2.492
V
l
2.809 2.884
V
l 2.716 2.791
V
l
3.010 3.090
V
l 2.910 2.990
V
l
3.311 3.400
V
l 3.200 3.289
V
l
3.612 3.708
V
l 3.492 3.588
V
l
4.515 4.635
V
l 4.365 4.485
V
l
5.017 5.150
V
l 4.850 4.983
V
l 88
92
96
%
200
250
350
mA
120
150
210
mA
80
100
140
mA
40
50
70
mA
20
25
35
mA
12
15
21
mA
8
10
14
mA
4
5
7
mA
50
mA
0.8
Ω
1.0
Ω
1.4
Ω
2.4
Ω
4.5
Ω
7.3
Ω
10.7
Ω
20.5
Ω
0.6
Ω
3.9
Ω
3331fb
4
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