LTC3406AES5-TRPBF 데이터 시트보기 (PDF) - Linear Technology

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LTC3406AES5-TRPBF

1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

Linear Technology 

LTC3406A

APPLICATIONS INFORMATION

For the feedback resistors, choose R1 = 316k. R2 can

then be calculated from Equation (2) to be:

R2 =





VOUT

0.6

1

R1= 1000k

(4)

Figure 5 shows the complete circuit along with its ef-

ficiency curve.

100

90

80

70

60

50

40

30

20

10

0

0.1

VIN

2.7V TO 4.2V

CIN†

4.7μF

CER

4

VIN

3

SW

LTC3406A

1

RUN

5

VFB

GND

2

2.2μH*

22pF

1M

316k

3406A F05a

* MURATA LQH32CN2R2M33

** TAIYO YUDEN JMK316BJ106ML

† TAIYO YUDEN LMK212BJ475MG

VOUT

2.5V

600mA

COUT**

10μF

CER

VIN = 2.7V

VIN = 3.6V

VIN = 4.2V

1

10

100

OUTPUT CURRENT (mA)

1000

3406A F05b

VOUT

100mV/DIV

IL

500mA/DIV

ILOAD

500mA/DIV

VIN = 3.6V 20μs/DIV

VOUT = 2.5V

ILOAD = 300mA TO 600mA

Figure 5.

3406A F05d

3406afa

13

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