Datasheet

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