LTC3603 Linear Dimensions Semiconductor, LTC3603 Datasheet - Page 5

• Manufacturer Part Number: LTC3603
• Description: Monolithic Synchronous Step-Down Regulator
• Manufacturer: Linear Dimensions Semiconductor

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TYPICAL PERFORMANCE CHARACTERISTICS
–0.10
–0.20
0.10
100
3.0
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
40
30
0
0
0.01
0.4
0
Minimum Peak Inductor Current
vs Burst Clamp Voltage
Effi ciency vs Load Current,
Forced Continuous
Load Regulation
FIGURE 6 CIRCUIT
FIGURE 6 CIRCUIT
V
IN
V
= 12V
IN
0.5
0.5
= 5V
BURST CLAMP VOLTAGE (V)
LOAD CURRENT (A)
LOAD CURRENT (A)
0.1
0.6
1
V
IN
= 7.2V
1.5
0.7
V
IN
V
IN
= 12V
= 15V
0.8
2
1
2.5
0.9
3603 G12
3603 G15
3603 G18
10
1.0
3
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
100
95
90
85
80
75
70
5
4
1
3
2
0
–50
0
Maximum Peak Inductor Current
vs Duty Cycle
Effi ciency vs Input Voltage
4
5V LDO Output Voltage
vs Temperature
FIGURE 6 CIRCUIT
10 20 30 40 50 60 70
5
–25
6
7
0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
DUTY CYCLE (%)
8
25
9
10
I
LOAD
50
I
LOAD
11
12
= 2.5A
= 1A
75
13
80
14
100
90 100
3603 G13
3603 G16
3603 G19
15 16
125
1.40
1.35
1.20
1.10
1.30
1.25
1.15
100
100
92
95
90
85
80
75
70
98
96
94
90
88
86
84
0.001
–50
0
Effi ciency vs Load Current,
Burst Mode Operation
Effi ciency vs Frequency
TRACK/SS Current
vs Temperature
FIGURE 6 CIRCUIT
FIGURE 6 CIRCUIT
I
LOAD
V
IN
–25
= 5V
= 2A
0.01
0
1000
LOAD CURRENT (A)
TEMPERATURE (°C)
FREQUENCY (kHz)
V
IN
V
IN
25
= 12V
= 12V
LTC3603
0.1
50
V
IN
V
V
2000
IN
= 15V
IN
= 7.2V
75
= 7.2V
1
100
3603 G17
3603 G14
3603 G20
5
3603f
3000
125
10