Datasheet

14
LTC34 0 6B
3406bfa
TYPICAL APPLICATIO S
U
Single Li-Ion 1.2V/600mA Regulator for
High Efficiency and Small Footprint
V
IN
C
IN
†
4.7µF
CER
V
IN
2.7V
TO 4.2V
LTC3406B
RUN
3
2.2µH*
22pF
301k
301k
3406B TA09
5
4
1
2
SW
V
FB
GND
C
OUT
**
10µF
CER
V
OUT
1.2V
*MURATA LQH32CN2R2M33
** TAIYO YUDEN JHK316BJ106ML
†
TAIYO YUDEN JMK212BJ475MG
OUTPUT CURRENT (mA)
0.1
EFFICIENCY (%)
10
1000
100
90
80
70
60
50
40
30
20
10
3406B TA10
1 100
V
OUT
= 1.2V
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
Efficiency vs Output Current
V
OUT
100mV/DIV
AC COUPLED
I
L
500mA/DIV
I
LOAD
500mA/DIV
20µs/DIV
V
IN
= 3.6V
V
OUT
= 1.2V
I
LOAD
= 200mA TO 600mA
3406B TA12
V
OUT
100mV/DIV
AC COUPLED
I
L
500mA/DIV
I
LOAD
500mA/DIV
20µs/DIV
V
IN
= 3.6V
V
OUT
= 1.2V
I
LOAD
= 0mA TO 600mA
3406B TA11
Load StepLoad Step