LTC3610_15 Datasheet, PDF (4/24 Pages) Linear Technology – 24V, 12A Monolithic Synchronous Step-Down DC/DC Converter

LTC3610
Typical Performance Characteristics
Transient Response
Transient Response
(Discontinuous Mode)
Start-Up
V_OUT
100mV/DIV
I_L
5A/DIV
I_LOAD
5A/DIV
40µs/DIV
LOAD STEP 0A TO 8A
V_IN = 12V
V_OUT = 2.5V
FCB = 0V
FIGURE 6 CIRCUIT
V_OUT
100mV/DIV
3610 G01
I_L
5A/DIV
I_LOAD
5A/DIV
40µs/DIV
I_LOAD = 1A TO 7A
V_IN = 12V
V_OUT = 2.5V
FCB = INTV_CC
FIGURE 6 CIRCUIT
RUN/SS
2V/DIV
3610 G02
V_OUT
1V/DIV
I_L
5A/DIV
40ms/DIV
V_IN = 12V
V_OUT = 2.5V
R_LOAD = 0.5Ω
FIGURE 6 CIRCUIT
3610 G03
Efficiency vs Load Current
100
DISCONTINUOUS
MODE
90
80
CONTINUOUS
MODE
70
60
50
0.001
V_IN = 12V
V_OUT = 2.5V
EXTV_CC = 5V
FIGURE 6 CIRCUIT
0.01
0.1
1
LOAD CURRENT (A)
10
3610 G04
Frequency vs Load Current
650
600
550
CONTINUOUS MODE
500
450
400
350
300
DISCONTINUOUS MODE
250
200
150
100
50
0
0
2
4
6
8 10 12
LOAD CURRENT (A)
3610 G07
Efficiency vs Input Voltage
100 _{FCB = 5V}
FIGURE 6 CIRCUIT
95
I_LOAD = 10A
90
85
I_LOAD = 1A
80
5
10
15
20
INPUT VOLTAGE (V)
25
3610 G05
Load Regulation
0.80 _{FIGURE 6 CIRCUIT}
0.60
0.40
0.20
0
–0.20
–0.40
–0.60
–0.80
0
2
4
6
8 10 12
LOAD CURRENT (A)
3610 G08
Frequency vs Input Voltage
640
I_LOAD = 10A
600
560
520
I_LOAD = 0A
480
440
FCB = 0V
FIGURE 6 CIRCUIT
400
5
10
15
20
INPUT VOLTAGE (V)
25
3610 G06
I_TH Voltage vs Load Current
2.5
FIGURE 6 CIRCUIT
2.0
1.5
CONTINUOUS
MODE
1.0
DISCONTINUOUS
0.5
MODE
0
0
3
6
9
12
LOAD CURRENT (A)
3610 G09
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