LTC3406A LINER [Linear Technology], LTC3406A Datasheet - Page 13

• Manufacturer Part Number: LTC3406A
• Description: 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT
• Manufacturer: LINER [Linear Technology]

For the feedback resistors, choose R1 = 316k. R2 can
then be calculated from Equation (2) to be:
APPLICATIONS INFORMATION
R2 =
V
0.6
OUT
100
90
80
70
60
50
40
30
20
10
0
0.1
1 R1= 1000k
1
OUTPUT CURRENT (mA)
10
2.7V TO 4.2V
100
V
V
V
V
IN
IN
IN
IN
= 2.7V
= 3.6V
= 4.2V
3406A F05b
1000
C
4.7μF
CER
IN
†
** TAIYO YUDEN JMK316BJ106ML
* MURATA LQH32CN2R2M33
†
4
1
TAIYO YUDEN LMK212BJ475MG
V
RUN
IN
LTC3406A
(4)
Figure 5.
GND
2
SW
V
FB
Figure 5 shows the complete circuit along with its ef-
fi ciency curve.
3
5
316k
2.2μH*
3406A F05a
22pF
1M
500mA/DIV
500mA/DIV
100mV/DIV
I
V
LOAD
OUT
I
L
C
10μF
CER
V
V
I
OUT
LOAD
IN
OUT
= 3.6V
**
V
2.5V
600mA
= 2.5V
OUT
= 300mA TO 600mA
20μs/DIV
LTC3406A
3406A F05d
13
3406afa