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參數(shù)資料
| 型號： | LTC3400 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 600mA, 1.2MHz Micropower Synchronous Boost Converter in ThinSOT |
| 中文描述： | 600毫安，1.2MHz的微功率同步升壓轉(zhuǎn)換器采用ThinSOT |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 181K |
| 代理商： | LTC3400 |
LTC3400/LTC3400B
1
3400f
I
Pagers
I
MP3 Players
I
I
LCD Bias Supplies
I
Handheld Instruments
I
Wireless Handsets
I
GPS Receivers
I
Up to 92% Efficiency
I
Generates 3.3V at 100mA from a Single AA Cell
I
Low Start-Up Voltage: 0.85V
I
1.2MHz Fixed Frequency Switching
I
Internal Synchronous Rectifier
I
2.5V to 5V Output Range
I
Automatic Burst Mode
Operation (LTC3400)
I
Continuous Switching at Light Loads (LTC3400B)
I
Logic Controlled Shutdown (<1
μ
A)
I
Antiringing Control Minimizes EMI
I
Tiny External Components
I
Low Profile (1mm) ThinSOT
TM
Package
APPLICATIU
600mA, 1.2MHz Micropower
Synchronous Boost Converter
in ThinSOT
Figure 1. Single Cell to 3.3V Synchronous Boost Converter
The LTC
3400/LTC3400B are synchronous, fixed fre-
quency, step-up DC/DC converters delivering high effi-
ciency in a 6-lead ThinSOT package. Capable of supplying
3.3V at 100mA from a single AA cell input, the devices
contain an internal NMOS switch and PMOS synchronous
rectifier.
A switching frequency of 1.2MHz minimizes solution
footprint by allowing the use of tiny, low profile inductors
and ceramic capacitors. The current mode PWM design is
internally compensated, reducing external parts count.
The LTC3400 features automatic shifting to power saving
Burst Mode operation at light loads, while the LTC3400B
features continuous switching at light loads. Antiringing
control circuitry reduces EMI concerns by damping the
inductor in discontinuous mode, and the devices feature
low shutdown current of under 1
μ
A.
Both devices are available in the low profile (1mm) ThinSOT
package.
ThinSOT is a trademark of Linear Technology Corporation.
SW
L1
4.7
μ
H
V
OUT
LTC3400
FB
V
IN
SHDN
2
1
3
3400 F01
R1
1.02M
1%
R2
604k
1%
C1, C2: TAIYO-YUDEN X5R EMK316BJ475ML
L1: COILCRAFT DO160C-472
C2
4.7
μ
F
C1
4.7
μ
F
SINGLE
AA CELL
V
OUT
3.3V
100mA
5
4
6
GND
+
OFF ON
LOAD CURRENT (mA)
60
E
80
100
50
70
90
0.1
10
100
1000
3400 F01a
40
1
V
IN
= 2.4V
V
IN
= 1.5V
FIGURE 1 CIRCUIT
WITH OPTIONAL SCHOTTKY DIODE
(SEE APPLICATIONS INFORMATION)
Efficiency
FEATURES
DESCRIPTIOU
TYPICAL APPLICATIO
U
, LTC, LT and Burst Mode are registered trademarks of Linear Technology Corporation.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3400/LTC3400B | 制造商:LINER 制造商全稱:Linear Technology 功能描述:4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN |
| LTC3400-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:600mA, 1.2MHz Micropower Synchronous Boost Converter in ThinSOT |
| LTC3400B | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.2MHz Step-Up DC/DC Converter in SOT-23 |
| LTC3400BES6 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 0.5V to 6V 6-Pin TSOT-23 |
| LTC3400BES6#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 0.5V to 6V 6-Pin TSOT-23 |
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