LTC3458 Linear Technology, LTC3458 Datasheet - Page 14

• Manufacturer Part Number: LTC3458
• Description: 1.4A/ 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
• Manufacturer: Linear Technology

LTC3458
TYPICAL APPLICATIO S
14
2.5V to 4.2V
1.8V to 3.3V
2 ALKALINE
2.5V to 4.2V
Li-Ion
Li-Ion
2.2µF
2.2µF
2.2µF
243k
243k
200k
ON OFF
ON OFF
ON OFF
Lithium-Ion Battery to 7V
124k
124k
124k
Lithium-Ion to 5V, 500mA at 850kHz
Two Cell to 5V
V
GND/PGND
SHDN
SYNC
R
I
V
GND/PGND
SHDN
SYNC
R
I
V
GND/PGND
SHDN
SYNC
R
I
LIM
LIM
LIM
IN
IN
T
T
IN
T
774775112
774775112
LTC3458
LTC3458
LTC3458
WURTH
WURTH
DQ7545
12µH
12µH
10µH
COEV
U
BURST
BURST
BURST
COMP
COMP
COMP
V
OUT
V
V
OUT
OUT
SW
SW
OUT
SW
SS
SS
FB
FB
SS
FB
, 200mA at 850kHz
133k
133k
133k
0.01µF
0.01µF
OUT
0.01µF
, 250mA at 1MHz
0.01µF
0.01µF
0.01µF
33k
33k
33k
10pF
10pF
10pF
10pF
560pF
10pF
560pF
10pF
560pF
3458 TA03a
3458 TA04a
3458 TA05a
324k
324k
1M
1M
316k
1.5M
22µF
X5R
22µF
X5R
22µF
X5R
V
5V
450mA
V
5V
200mA
V
7V
250mA
OUT
OUT
OUT
100
100
100
95
90
85
80
75
70
65
95
90
85
80
75
70
65
95
90
85
80
75
70
65
0.1
0.1
0.1
Two Alkaline to 5V
1
1
1
Li-Ion to 5V
Li-Ion to 7V
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
2.5V
1.8V
www.DataSheet4U.com
3.6V
4.2V
3.6V
2.5V
3.3V
IN
IN
4.2V
10
10
10
IN
IN
IN
IN
IN
IN
OUT
OUT
100
100
100
OUT
3458 TA05b
3458 TA03b
3458 TA04b
1000
1000
1000
3458f