Datasheet

LTC3104
5
3104f
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Output Current
(Forced Continuous Operation)
Efficiency vs Input Voltage
(Forced Continuous Operation)
Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature R
DS(ON)
vs Temperature
T
A
= 25°C unless otherwise noted
Application No-Load Input Current
vs Supply Voltage (Forced
Continuous Operation)
Application No-Load Input Current
vs Temperature (Automatic Burst
Mode Operation)
SW Leakage vs Temperature Peak Current Limit vs Temperature
OUTPUT CURRENT (A)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.0001 0.01 0.1 1
3104 G04
0
0.001
V
IN
= 3.7V
V
IN
= 5V
V
IN
= 7V
V
IN
= 10V
V
IN
= 15V
V
OUT
= 3.3V
L = 10µH
INPUT VOLTAGE (V)
3
0
EFFICIENCY (%)
10
30
40
50
100
70
7
11
13 15
3104 G05
20
80
90
60
5 9
V
OUT
= 3.3V, L = 10µH
I
LOAD
= 300mA
I
LOAD
= 100mA
I
LOAD
= 10mA
I
LOAD
= 1mA
INPUT VOLTAGE (V)
2
2.0
2.5
3.5
8 12
3104 G06
1.5
1.0
4 6
10 14 16
0.5
0
3.0
INPUT CURRENT (mA)
FRONT PAGE APPLICATION
LDO ENABLED
TEMPERATURE (°C)
–60
CHANGE IN V
FB
(%)
0.25
0.50
0.75
100
3104 G07
0
–0.25
–0.50
–20–40
200
60 80 120
40
140
NORMALIZED TO 25°C
TEMPERATURE (°C)
–50
–10
FREQUENCY CHANGE (%)
–8
–4
–2
0
10
4
0
50
75
3104 G08
–6
6
8
2
–25 25
100
125
150
NORMALIZED TO 25°C
TEMPERATURE (°C)
–50
CHANGE IN RESISTANCE (%)
40
25
3104 G09
10
–10
–25 0 50
–20
–30
50
30
20
0
75 100 125
NORMALIZED TO 25°C
V
IN
= 10V
SYNCHRONOUS
RECTIFIER
MAIN
SWITCH
TEMPERATURE (°C)
–50
LEAKAGE CURRENT (nA)
350
25
3104 G10
200
100
–25 0 50
50
0
400
300
250
150
75 100 150125
V
IN
= 10V
MAIN
SWITCH
SYNCHRONOUS
RECTIFIER
TEMPERATURE (°C)
–50
PEAK CURRENT LIMIT CHANGE (%)
–2.5
0
2.5
40
100
3104 G11
–5.0
–7.5
–10.0
–20 10 70
5.0
7.5
10.0
130
V
IN
= 10V
V
OUT
= 2.5V
TEMPERATURE (°C)
–50
2.0
INPUT CURRENT (µA)
2.5
3.0
3.5
4.0
–10 30
70
110
3104 G12
4.5
5.0
–25 10
50
90
V
IN
= 10V
V
OUT
= 2.5V