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| LTC3405A_15 Datasheet, PDF (13/16 Pages) Linear Technology – 1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT | |||
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APPLICATIO S I FOR ATIO
VIN
2.7V
TO 4.2V
CINâ
2.2µF
CER
4
VIN
3
SW
LTC3405A
1
RUN
6
5
MODE VFB
GND
2
6.8µH*
22pF
VOUT
2.5V
COUT**
4.7µF
CER
887k
412k
3405A F07a
*SUMIDA CMD4D11-6R8MC
** TAIYO YUDEN JMK212BJ475MG
â TAIYO YUDEN LMK212BJ225MG
Figure 7a
100
VIN = 2.7V
90
VIN = 3.6V
80
70 VIN = 4.2V
60
50
40
30
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3405A F07b
Figure 7b
LTC3405A
VOUT
100mV/DIV
AC COUPLED
IL
200mA/DIV
ILOAD
200mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 2.5V
ILOAD = 100mA TO 300mA
Figure 7c
3405A F07c
3405afa
13
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