データシート検索エンジンとフリーデータシート
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LTC3456 データシートの表示(PDF) - Linear Technology
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LTC3456
2-Cell, Multi-Output DC/DC Converter with USB Power Manager
Linear Technology
LTC3456 Datasheet PDF : 28 Pages
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LTC3456
TYPICAL PERFOR A CE CHARACTERISTICS
T
A
= 25
°
C unless otherwise specified.
Switching Waveforms
(Battery Powered)
I
L1
50mA/DIV
V
SW1
5V/DIV
I
L2
200mA/DIV
V
SW2_BST
5V/DIV
V
BATT
= 2.4V
V
PWRON
= 2V
I
CORE
= 100mA
I
MAIN
= 100mA
0.5
µ
s/DIV
3456 G28
Switching Waveforms
(Wall/USB Powered)
I
L1
200mA/DIV
V
SW1
5V/DIV
I
L3
100mA/DIV
V
SW2_BK
5V/DIV
V
EXT
= 5V
V
PWRON
= 2V
I
CORE
= 100mA
I
MAIN
= 100mA
0.5
µ
s/DIV
3456 G29
USB
↔
Battery Switchover
(Main Converter Transient
Waveforms)
V
MAIN
100mV/DIV
(AC COUPLED)
I
L2
200mA/DIV
I
L3
100mA/DIV
SUSPEND
5V/DIV
V
USB
= 5V
V
USBHP
= 5V
V
BATT
= 2.4V
I
CORE
= 100mA
I
MAIN
= 100mA
200
µ
s/DIV
3456 G30
USB
↔
Battery Switchover
(Core Converter Transient
Waveforms)
V
CORE
100mV/DIV
(AC COUPLED)
I
L1
100mA/DIV
SUSPEND
5V/DIV
V
USB
= 5V
V
USBHP
= 5V
V
BATT
= 2.4V
I
CORE
= 100mA
I
MAIN
= 100mA
200
µ
s/DIV
3456 G31
Power Up/Power Down
Sequencing (Battery Powered)
V
PWRON
5V/DIV
V
MAIN
5V/DIV
V
CORE
2V/DIV
RESET
5V/DIV
V
BATT
= 2.4V
I
CORE
= 10mA
I
MAIN
= 10mA
100ms/DIV
3456 G32
Power Supply Sequencing
(Battery Powered)
V
PWRON
5V/DIV
V
INT
5V/DIV
V
CORE
2V/DIV
V
MAIN
5V/DIV
V
BATT
= 2.4V
I
CORE
= 5mA
200
µ
s/DIV
3456 G33
3456fa
8
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