Datasheet

LTC3603
5
3603fc
For more information www.linear.com/LTC3603
Frequency vs Temperature
Quiescent Current
vs Input Voltage
Quiescent Current
vs Temperature
typical perForMance characteristics
Minimum Peak Inductor Current
vs Burst Clamp Voltage
Maximum Peak Inductor Current
vs Duty Cycle
Efficiency vs Load Current,
Operation
Efficiency vs Load Current,
Forced Continuous Efficiency vs Input Voltage Efficiency vs Frequency
TEMPERATURE (°C)
FREQUENCY (kHz)
995
1000
1005
990
985
980
1010
1015
1020
3603 G09
–50 25 75
–25 0
50 100 125
R
OSC
= 105kΩ
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (µA)
200
400
600
100
300
500
6 8 10 12
3603 G10
1554 7 9 11 13 14
SLEEP
ACTIVE
TEMPERATURE (°C)
300
400
600
200
100
0
500
QUIESCENT CURRENT (µA)
3603 G11
–50 25 75
–25 0
50 100 125
SLEEP
ACTIVE
BURST CLAMP VOLTAGE (V)
0.4
2.0
2.5
0.7 0.9
1.5
1.0
0.5 0.6 0.8 1.0
0.5
0
3.0
PEAK INDUCTOR CURRENT (A)
3603 G12
DUTY CYCLE (%)
0
PEAK INDUCTOR CURRENT (A)
3
4
5
80
2
1
0
10 20 30
40 50
60 70 90
100
3603 G13
LOAD CURRENT (A)
80
EFFICIENCY (%)
90
100
75
85
95
0.001 0.1 1 10
3603 G14
70
0.01
FIGURE 6 CIRCUIT
V
IN
= 5V
V
IN
= 15V
V
IN
= 7.2V
V
IN
= 12V
LOAD CURRENT (A)
0.01
70
EFFICIENCY (%)
80
90
100
0.1 1 10
3603 G15
60
50
40
30
V
IN
= 15V
FIGURE 6 CIRCUIT
V
IN
= 5V
V
IN
= 12V
V
IN
= 7.2V
INPUT VOLTAGE (V)
4
70
EFFICIENCY (%)
75
80
85
90
100
6
8 10 12
3603 G16
145
7
9 11 13 15 16
95
FIGURE 6 CIRCUIT
I
LOAD
= 1A
I
LOAD
= 2.5A
FREQUENCY (kHz)
0
EFFICIENCY (%)
90
92
94
3603 G17
88
86
84
1000 2000
96
98
100
3000
FIGURE 6 CIRCUIT
I
LOAD
= 2A
V
IN
= 7.2V
V
IN
= 12V