 English |
|
|
|
|
|
|
|
| LTC3442 Datasheet, PDF (16/20 Pages) Linear Integrated Systems – Micropower Synchronous Buck-Boost DC/DC Converter with Automatic Burst Mode Operation | |||
| |||
| ◁ |
LTC3442
TYPICAL APPLICATIO S
1MHz Li-Ion to 3.3V at 1.2A Converter with
Manual Mode Control (and Peak Current Limit Only)
L1
3.3µH
2.5V TO 4.2V
CIN
10µF
Li-Ion
1M
0.01µF
43.2k
SW1
SW2
LTC3442
VIN
VOUT
SHDN/SS
FB
RLIM
RT
SGND
VC
BURST
PGND
15k
470pF
340k 2.2k
220pF
200k
VOUT
3.3V
1.2A
COUT
22µF
BURST FIXED FREQ
CIN: TAIYO YUDEN JMK212BJ106MG
COUT: TAIYO YUDEN JMK325BJ226MM
L1: TDK RLF7030T-3R3M4R
3442 TA02
Multi-Input 3.3V at 600mA Boost Converter for Portable Applications
with Automatic Burst Mode Operation and Average Input Current Limit for USB Powered Devices
1nF
2â¦
L1
4.7µH
Li-Ion
USB/5V
CIN
10µF
D1
MBRM120T3
2.5V TO 5.5V
1M
143k
2N7002
USB
PRESENT
0.01µF
RSNUB**
1â¦
1nF
143k 64.9k
SW1
SW2
LTC3442
VIN
VOUT
SHDN/SS
FB
RLIM
RT
SGND
VC
BURST
PGND
340k 2.2k
15k
470pF
220pF
200k
200k
0.01µF
**A SNUBBER RESISTOR IS REQUIRED TO PREVENT
CIN: TAIYO YUDEN JMK212BJ106MG
RINGING IF THERE IS SIGNIFICANT INPUT INDUCTANCE, COUT: TAIYO YUDEN JMK325BJ476MM
SUCH AS FROM A USB CABLE
L1: TDK RLF7030T-4R7M3R4
VOUT
3.3V
600mA
COUT
22µF
3442 TA03
3442f
16
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese