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參數(shù)資料
| 型號(hào)： | LTC3406ES5-1.2#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.3 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | PLASTIC, SOT-23, 5 PIN |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 228K |
| 代理商： | LTC3406ES5-1.2#PBF |
1
LTC3406-1.2
340612fa
■
High Efficiency: Up to 90%
■
Very Low Quiescent Current: Only 20
A
■
600mA Output Current at VIN = 3V
■
2.5V to 5.5V Input Voltage Range
■
1.5MHz Constant Frequency Operation
■
No Schottky Diode Required
■
Shutdown Mode Draws < 1
A Supply Current
■
Current Mode Operation for Excellent Line and
Load Transient Response
■
Overtemperature Protected
■
Low Profile (1mm) ThinSOT
TM Package
The LTC
3406-1.2 is a high efficiency monolithic syn-
chronous buck regulator using a constant frequency,
current mode architecture. Supply current during opera-
tion with only 20
A drops <1A in shutdown. The 2.5V to
5.5V input voltage range makes the LTC3406-1.2 ideally
suited for single Li-Ion battery-powered applications. 100%
duty cycle provides low dropout operation, extending
battery life in portable systems. Automatic Burst Mode
operation further increases efficiency at light loads.
Switching frequency is internally set at 1.5MHz, allowing
the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. The
LTC3406-1.2 is available in a low profile (1mm) ThinSOT
package.
■ Cellular Telephones
■
Personal Information Appliances
■ Wireless and DSL Modems
■ Digital Still Cameras
■ MP3 Players
■ Portable Instruments
High Efficiency Step-Down Converter
1.5MHz, 600mA
Synchronous Step-Down
Regulator in ThinSOT
Efficiency and Power Loss
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
VIN
CIN
4.7
F
CER
VIN
2.7V TO 5.5V
LTC3406-1.2
RUN
2.2
H
340612
TA01a
SW
VOUT
GND
COUT
10
F
CER
VOUT
1.2V
600mA
LOAD CURRENT (mA)
0.1
10
1000
100
90
80
70
60
50
40
30
20
10
0
340612
TA01b
1
100
1
0.1
0.01
0.001
0.00001
0.0001
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
EFFICIENCY
POWER LOSS
POWER
LOSS
(W)
EFFICIENCY
(%)
, LTC and LT are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. ThinSOT is a trademark of Linear
Technology Corporation. Protected by U.S. Patents including 5481178, 6580258, 6304066,
6127815, 6498466, 6611131.
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