LTC3458_15 Datasheet, PDF (14/16 Pages) Linear Technology – 1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect

LTC3458
TYPICAL APPLICATIO S
Lithium-Ion to 5V, 500mA at 850kHz
WURTH
12μH
774775112
Li-Ion
2.5V to 4.2V
2.2μF
V_IN
SW
LTC3458
GND/PGND
V_OUT
ON OFF
SHDN
FB
SYNC
R_T
I_LIM
243k 124k
COMP
SS
BURST
0.01μF
0.01μF
133k
V_OUT
5V
10pF
450mA
1M
33k
10pF
560pF
324k
22μF
X5R
3458 TA03a
Two Cell to 5V_OUT, 200mA at 850kHz
WURTH
12μH
774775112
2 ALKALINE
1.8V to 3.3V
2.2μF
V_IN
SW
LTC3458
GND/PGND
V_OUT
ON OFF
SHDN
FB
SYNC
R_T
I_LIM
243k 124k
COMP
SS
BURST
0.01μF
0.01μF
133k
V_OUT
5V
10pF
200mA
1M
33k
10pF
560pF
324k
22μF
X5R
3458 TA04a
Lithium-Ion Battery to 7V_OUT, 250mA at 1MHz
COEV
10μH
DQ7545
Li-Ion
2.5V to 4.2V
2.2μF
V_IN
SW
LTC3458
GND/PGND
V_OUT
ON OFF
SHDN
FB
SYNC
R_T
I_LIM
200k 124k
COMP
0.01μF
SS
0.01μF
BURST
133k
10pF
1.5M
V_OUT
7V
250mA
33k
10pF
560pF
316k
22μF
X5R
3458 TA05a
14
100
95
90
85
80
75
70
65
0.1
Li-Ion to 5V_OUT
4.2V_IN
3.6V_IN
2.5V_IN
1
10
100
LOAD CURRENT (mA)
1000
3458 TA03b
Two Alkaline to 5V_OUT
100
95
3.3V_IN
90
85
1.8V_IN
80
75
70
65
0.1
1
10
100
LOAD CURRENT (mA)
1000
3458 TA04b
100
95
90
85
80
75
70
65
0.1
Li-Ion to 7V_OUT
4.2V_IN
3.6V_IN
2.5V_IN
1
10
100
1000
LOAD CURRENT (mA)
3458 TA05b
3458fa