Datasheet

LTC3602
5
3602fb
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)
3602 G12
INPUT VOLTAGE (V)
4
90
95
79
85
80
56 8 10
75
70
100
EFFICIENCY (%)
3602 G16
I
LOAD
= 2.5A
I
LOAD
= 1A
FIGURE 6 CIRCUIT
LOAD CURRENT (A)
0
–0.10
0.00
1.5 2.50.5 1 2 3
–0.20
0.10
ΔV
OUT
/V
OUT
(%)
3602 G18
FIGURE 6 CIRCUIT
V
IN
= 7V
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Peak Inductor Current
vs Burst Clamp Voltage
Maximum Peak Inductor Current
vs Duty Cycle
Effi ciency vs Load Current,
Burst Mode Operation
Effi ciency vs Load Current,
Forced Continuous Effi ciency vs Input Voltage Effi ciency vs Frequency
Load Regulation
5V LDO Output Voltage
vs Temperature
TRACK/SS Current
vs Temperature
DUTY CYCLE (%)
0
PEAK INDUCTOR CURRENT (A)
3
4
5
80
2
1
0
10 20 30
40 50
60 70 90
100
3602 G13
FREQUENCY (kHz)
0
84
EFFICIENCY (%)
88
92
96
500 1000 20001500 2500
100
86
90
94
98
3000
3602 G17
1μH
4.7μH
2.2μH
FIGURE 6 CIRCUIT
V
IN
= 7V
I
LOAD
= 1A
TEMPERATURE (oC)
–50
4.90
LDO OUTPUT VOLTAGE (V)
4.92
4.96
4.98
5.00
5.10
5.04
0
50
75
4.94
5.06
5.08
5.02
–25
25
100
125
3602 G19
TEMPERATURE (oC)
–50
1.10
TRACK/SS CURRENT (μA)
1.15
1.25
1.30
1.35
1.40
0
50
75
1.20
–25
25
100
125
3602 G20
LOAD CURRENT (A)
0.01
90
EFFICIENCY (%)
95
0.1 1 10
85
80
75
70
100
3602 G14
FIGURE 6 CIRCUIT
V
IN
= 5V
V
IN
= 9V
LOAD CURRENT (A)
0.01
EFFICIENCY (%)
0.1 1 10
3602 G15
FIGURE 6 CIRCUIT
0
20
40
60
80
100
10
30
50
70
90
V
IN
= 5V
V
IN
= 9V