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LTC3412AEUF#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC3412A
4
3412afe
typicAl perForMAnce chArActeristics
Efficiency vs Input Voltage Efficiency vs Frequency Load Regulation
Burst Mode Operation Output Voltage Ripple
Load Step Transient Burst Mode
Operation
Efficiency vs Load Current
Efficiency vs Load Current,
Burst Mode Operation
Efficiency vs Load Current,
Forced Continuous Operation
LOAD CURRENT (A)
0.01
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0.1 1 10
3412A GO1
Burst Mode
OPERATION
FORCED
CONTINUOUS
V
IN
= 3.3V
V
OUT
= 2.5V
FIGURE 4 CIRCUIT
LOAD CURRENT (A)
0.01 0.1 1 10
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
3412A GO3
V
OUT
= 2.5V
FIGURE 4 CIRCUIT
V
IN
= 3.3V
V
IN
= 5V
INPUT VOLTAGE (V)
2.5
94
92
90
88
86
84
82
80
4.0
3412A GO4
3.0 3.5 4.5 5.0
EFFICIENCY (%)
0.1A
1A
3A
FIGURE 4 CIRCUIT
3412A GO5
EFFICIENCY (%)
96
95
94
93
92
91
90
89
88
87
FREQUENCY (MHz)
0 4.0
1.0
2.0
3.0
0.5 1.5 2.5
3.5
0.22µH
0.47µH
1µH
FIGURE 4 CIRCUIT
V
IN
= 3.3V
LOAD CURRENT (A)
0
∆V
OUT
/V
OUT
(%)
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
0.5
1.0 1.5 2.0
3412A GO6
2.5 3.0
FIGURE 4 CIRCUIT
V
IN
= 3.3V
3412A GO7
5µs/DIV
V
OUT
20mV/DIV
INDUCTOR
CURRENT
1A/DIV
FIGURE 4 CIRCUIT
3412A GO8
5µs/DIV
FORCED
CONTINUOUS
20mV/DIV
PULSE
SKIPPING
20mV/DIV
BURST
MODE
20mV/DIV
V
IN
= 3.3V
V
OUT
= 2.5V
FIGURE 4 CIRCUIT
3412A GO9
40µs/DIV
V
OUT
100mV/DIV
INDUCTOR
CURRENT
2A/DIV
V
IN
= 3.3V
V
OUT
= 2.5V
F = 1MHz
LOAD STEP = 50mA TO 2A
FIGURE 4 CIRCUIT
LTC3412A
5
3412afe
typicAl perForMAnce chArActeristics
Switch On-Resistance
vs Input Voltage
Switch On-Resistance
vs Temperature
Switch Leakage Current
vs Input Voltage
Frequency vs R
OSC
Frequency vs Input Voltage Frequency vs Temperature
Load Step Transient Forced
Continuous Start-Up Transient V
REF
vs Temperature
INPUT VOLTAGE (V)
2.5
ON-RESISTANCE (mΩ)
100
95
90
85
80
75
70
65
60
55
50
4.5
3412A G13
3.0
3.5
4.0
5.0
PFET
NFET
TEMPERATURE (°C)
ON-RESISTANCE (mΩ)
3412A G14
120
100
80
60
40
20
0
–40
0
40
60
–20 20
80
100
120
PFET
NFET
V
IN
= 3.3V
INPUT VOLTAGE (V)
2.5
SWITCH LEAKAGE CURRENT (nA)
3.0
3.5
4.0 4.5
3412A G15
5.0
50
45
40
35
30
25
20
15
10
5
0
5.5
PFET
NFET
R
OSC
(kΩ)
40
FREQUENCY (kHz)
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
240
440
540 940
3412A G16
140 340
640
740
840
V
IN
= 3.3V
2.5 4.5
3.0
3.5
4.0
5.55.0
INPUT VOLTAGE (V)
FREQUENCY (kHz)
1060
1050
1040
1030
1020
1010
1000
990
3412A G17
R
OSC
= 294k
TEMPERATURE (°C)
–40
FREQUENCY (kHz)
1020
1015
1010
1005
1000
995
990
985
980
975
970
0
40
60
3412A G18
–20 20
80
100
120
V
IN
= 3.3V
R
OSC
= 294k
TEMPERATURE (°C)
–45
V
REF
(V)
75
0.7975
0.7970
0.7965
0.7960
0.7955
0.7950
0.7945
0.7940
0.7935
0.7930
3412A G12
–25
–5
15 35 55 95
115
V
IN
= 3.3V
3412A G10
40µs/DIV
V
OUT
100mV/DIV
INDUCTOR
CURRENT
2A/DIV
V
IN
= 3.3V
V
OUT
=2.5V
f = 1MHz
LOAD STEP = 0A TO 3A
FIGURE 4 CIRCUIT
3412A G11
1ms/DIV
V
OUT
2V/DIV
RUN/SS
2V/DIV
INDUCTOR
CURRENT
2A/DIV
V
IN
= 3.3V
V
OUT
=2.5V
LOAD STEP = 2A
FIGURE 4 CIRCUIT
LTC3412A
6
3412afe
typicAl perForMAnce chArActeristics
Minimum Peak Inductor Current
vs Burst Clamp Voltage Peak Current vs Input Voltage
Quiescent Current
vs Input Voltage Quiescent Current vs Temperature
INPUT VOLTAGE (V)
QUIESCENT CURRENT (µA)
350
300
250
200
150
100
50
0
3412A G19
2.5
3.0
3.5 4.0 4.5 5.0 5.5
ACTIVE
SLEEP
QUIESCENT CURRENT (µA)
350
300
250
200
150
100
50
0
TEMPERATURE (°C)
–40 80
3412A G20
0 40 120–20 20 60 100
ACTIVE
SLEEP
V
IN
= 3.3V
V
BURST
(V)
0.1 0.2
MAXIMUM PEAK INDUCTOR CURRENT (mA)
0.3 0.50.4
0.6
0.7
3412A G21
4000
3500
3000
2500
2000
1500
1000
500
0
INPUT VOLTAGE (V)
2.25 2.75
PEAK INDUCTOR CURRENT (A)
3.25 4.253.75
4.75
3412A G22
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC3412AEUF#TRPBF

Mfr. #:
Buy LTC3412AEUF#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 3A, 4MHz, Mono Sync Buck Reg
Lifecycle:
New from this manufacturer.
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