Datasheet

6
LTC2846
sn2846 2846fs
TYPICAL PERFOR A CE CHARACTERISTICS
UW
V.11 Mode I
CC
vs Temperature V.35 Mode I
CC
vs Temperature V.28 Mode I
CC
vs Temperature
TEMPERATURE (°C)
–40
I
CC
(mA)
100
105
110
20 60
2846 G07
95
90
–20 0
40 80 100
85
80
TEMPERATURE (°C)
–40
123.0
I
CC
(mA)
123.5
124.5
125.0
125.5
128.0
126.5
0
40
60
2846 G08
124.0
127.0
127.5
126.0
–20
20
80
100
TEMPERATURE (°C)
–40
I
CC
(mA)
37.0
20
3846 G09
35.5
34.5
–20 0 40
34.0
33.5
37.5
36.5
36.0
35.0
60 80 100
Boost Switching Regulator SHDN
Pin Current vs Voltage
SHDN PIN VOLTAGE (V)
0
SHDN PIN CURRENT (µA)
15
20
25
3
5
2846 G10
10
5
0
12 4
30
35
40
6
T
A
= 25°C
T
A
= 100°C
Boost Switching Regulator
Current Limit vs Duty Cycle
DUTY CYCLE (%)
10
0.8
1.0
1.4
40 60
2846 G11
0.6
0.4
20 30
50 70 80
0.2
0
1.2
CURRENT LIMIT (A)
T
A
= 25°C
Boost Switching Regulator
Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–40 –20
1.05
FREQUENCY (MHz)
1.15
1.30
0
40
60
2846 G12
1.10
1.25
1.20
20
80
100
LOAD CURRENT (mA)
0
EFFICIENCY (%)
90
85
80
75
70
65
60
55
50
400
2846 TA01b
10050 150 250 350 450
200
300
500
V
IN
= 3.3V
T
A
= 25°C
Efficiency vs Load Current