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參數資料
| 型號： | LTC3464 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 1.2MHz Step-Up DC/DC Converter in SOT-23 |
| 中文描述： | 1.2MHz升壓型DC / DC轉換器采用SOT - 23 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 152K |
| 代理商： | LTC3464 |
1
LTC3426
3426f
1.2MHz Step-Up DC/DC
Converter in SOT-23
■
Internal 2A MOSFET Switch
■
1.2MHz Switching Frequency
■
Integrated Soft-Start
■
V
IN
Range: 1.6V to 4.3V
■
Low R
DS(ON)
Switch: 100m
at 5V Output
■
Delivers 5V at 800mA from a 3.3V Input
■
Delivers 3.3V at 800mA from a 2.5V Input
■
Uses Small, Low Profile External Components
■
Low Profile (1mm) SOT-23 (ThinSOT
TM
) Package
APPLICATIU
■
White LED Driver Supply
■
Local 3.3V or 5V Supply
■
Battery Back-Up
The LTC
3426 step-up switching regulator generates an
output voltage of up to 5.5V from an input voltage as low
as 1.6V. Ideal for applications where space is limited, it
switches at 1.2MHz, allowing the use of tiny, low cost and
low profile external components. Its internal 2A, 100m
NMOS switch provides high efficiency even at heavy load,
while the constant frequency, current mode architecture
results in low, predictable output noise that is easy to filter.
Antiringing circuitry reduces EMI concerns by damping
the inductor while in discontinuous mode, and internal
soft-start eases inrush current worries. Internal frequency
compensation is designed to accommodate ceramic out-
put capacitors, further reducing noise. The device features
very low shutdown current of 0.5
μ
A.
The LTC3426 is available in the 6-lead SOT-23 package.
3.3V to 5V Boost Converter
Efficiency
SW
2.2
μ
H
V
IN
3.3V
V
IN
LTC3426
SHDN
22
μ
F
10
μ
F
V
OUT
5V
800mA
3426 TA01
V
OUT
FB
OFF ON
GND
FEATURES
DESCRIPTIOU
TYPICAL APPLICATIO
U
LOAD CURRENT (mA)
1
70
E
75
80
85
90
10
100
1000
3426 TA01b
65
60
55
50
95
100
V
IN
= 3.3V
V
OUT
= 5V
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6498466, 6611131
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