Datasheet 搜索 > ADI（亚德诺） > LTC3406ABES5#TRPBF 数据手册 > LTC3406ABES5#TRPBF 数据手册 1/18 页
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LTC3406ABES5#TRPBF 数据手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
封装:
TSOT-23
描述:
降压型 Vin=2.5V~5.5V Vout=600mV~5.5V 600mA
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LTC3406ABES5#TRPBF数据手册
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LTC3406AB
1
3406abfb
For more information www.linear.com/LTC3406AB
Typical applicaTion
FeaTures
applicaTions
DescripTion
1.5MHz, 600mA
Synchronous Step-Down
Regulator in ThinSOT
The LT C
®
3406AB is a high efficiency monolithic synchro-
nous buck regulator using a constant frequency, current
mode architecture
. Supply current with no load is 200µA,
dropping to <1µA in shutdown. The 2.5V to 5.5V input
voltage range makes the LTC3406AB ideally suited for
single Li-Ion battery-powered applications. 100% duty
cycle provides low dropout operation, extending battery
run time in portable systems. PWM pulse skipping mode
operation provides very low output ripple voltage for noise
sensitive applications. Refer to LTC3406A for applications
that require Burst Mode
®
operation.
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. Low
output voltages are easily supported with the 0.6V feedback
reference voltage. The LTC3406AB is available in a low
profile (1mm) ThinSOT package.
L, LT , LT C , LTM and Burst Mode 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 5481178, 6580258.
Efficiency vs Load Current
n
High Efficiency: Up to 96%
n
600mA Output Current
n
2.5V to 5.5V Input Voltage Range
n
1.5MHz Constant Frequency Operation
n
No Schottky Diode Required
n
Low Dropout Operation: 100% Duty Cycle
n
Low Quiescent Current: 200µA
n
±2% 0.6V Reference
n
Shutdown Mode Draws <1µA Supply Current
n
Internal Soft-Start Limits Inrush Current
n
Current Mode Operation for Excellent Line and
Load Transient Response
n
Overtemperature Protected
n
Low Profile (1mm) ThinSOT
TM
Package
n
Cellular Telephones
n
Satellite and GPS Receivers
n
Wireless and DSL Modems
n
Digital Still Cameras
n
Media Players
n
Portable Instruments
V
IN
4.7µF
CER
V
IN
LTC3406AB
RUN
2.2µH
22pF
619k
309k
3406AB TA09
SW
V
FB
GND
10µF
CER
1.8V, 600mA
V
OUT
OUTPUT CURRENT (mA)
0.1
EFFICIENCY (%)
10
1000
100
90
80
70
60
50
40
30
20
10
3406B TA14
1 100
V
OUT
= 1.8V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
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