參數(shù)資料
型號: LTC3456
廠商: Linear Technology Corporation
元件分類: 基準電壓源/電流源
英文描述: 2-Cell, Multi-Output DC/DC Converter with USB Power Manager
中文描述: 2節(jié)電池,多輸出DC / DC轉(zhuǎn)換器與USB電源管理器
文件頁數(shù): 5/28頁
文件大?。?/td> 358K
代理商: LTC3456
5
LTC3456
3456f
TYPICAL PERFOR U
Core Converter Efficiency
(Battery Powered)
Main Converter Efficiency
(Battery Powered)
Efficiency (USB Powered)
Oscillator Frequency
vs Battery Voltage
Oscillator Frequency
vs V
EXT
Voltage
Oscillator Frequency
vs Temperature
No Load Battery Supply Current
vs Battery Voltage
No Load Battery Supply Currrent
vs Temperature
Shutdown Current vs Temperature
LOAD CURRENT (mA)
1
60
E
80
100
10
100
1000
3456 G01
40
30
50
70
90
20
0
10
V
BATT
= 2.4V
V
CORE
= 1.8V
PWM MODE
Burst Mode
OPERATION
V
BATT
(V)
1.6
F
1000
1100
3.2
3456 G04
900
800
2.0
2.4
2.8
1.8
2.2
2.6
3.0
1200
950
1050
850
1150
V
EXT
(V)
4
F
1000
1100
5.5
3456 G05
900
800
4.5
5
4.25
4.75
5.25
1200
950
1050
850
1150
TEMPERATURE (
°
C)
–50
F
1000
1100
125
3456 G06
900
800
0
50
–25
25
100
75
1200
950
1050
850
1150
V
BATT
= 2.4V
V
BATT
(V)
1.6
B
4
5
6
2.8
3456 G07
3
2
2
2.4
1.8
3
2.2
2.6
3.2
1
0
7
PWM MODE
Burst Mode OPERATION
FB1 = 1V
(CORE CONVERTER
NOT SWITCHING)
TEMPERATURE (
°
C)
–50
B
3.5
25
3456 G08
2.0
1.0
–25
0
50
0.5
0
4.0
3.0
2.5
1.5
75
100
125
PWM MODE
Burst Mode OPERATION
FB1 = 1V
(CORE CONVERTER
NOT SWITCHING)
TEMPERATURE (
°
C)
–50
–25
0
S
μ
A
2
5
0
50
75
3456 G09
1
4
3
25
100
125
V
BATT
= 2.4V
LOAD CURRENT (mA)
1
60
E
80
100
10
100
1000
3456 G02
40
30
50
70
90
20
0
10
V
BATT
= 2.4V
V
MAIN
= 3.3V
PWM MODE
Burst Mode
OPERATION
LOAD CURRENT (mA)
1
60
E
80
100
10
100
1000
3456 G02
40
30
50
70
90
20
0
10
V
USB
= 5V
V
USBHP
= 2V
1.8V OUTPUT
3.3V OUTPUT
T
A
= 25
°
C unless otherwise specified.
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