LTC3428_15 Datasheet, PDF (4/12 Pages) Linear Technology – 4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN

LTC3428
TYPICAL PERFORMANCE CHARACTERISTICS
All characteristic curves at T_A = 25°C unless otherwise noted.
Output Voltage Ripple with 22μF
Ceramic Capacitor
Converter Efficiency
95
3.3V TO 5V
90
50mV/DIV
85
80
2.5V TO 5V
75
2.5V TO 3.3V
70
65
60
500ns/DIV
3428 G04
55
0.05
0.1
LOAD CURRENT (A)
1
2
3428 G05
Switch R_DS(ON) vs V_OUT
108
106
104
102
100
98
96
94
92
90
88
2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT VOLTAGE (V)
3428 G06
SWA, SWB Rise Time, I = 2A
1V/DIV
10ns/DIV
3428 G07
4
Switch R_DS(ON) vs Temperature
120
110
100
90
80
70
60
–45 –25 –5 15 35 55 75 95 115
TEMPERATURE (°C)
3428 G08
Peak Current Limit
vs Temperature
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
–45 –25 –5 15 35 55
TEMPERATURE (°C)
75 95
3428 G10
Feedback Voltage vs Temperature
1.27
1.26
1.25
1.24
1.23
1.22
–45 –25 –5 15 35 55 75
TEMPERATURE (°C)
95 115
3428 G09
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