LTC3406-1.8_15 Datasheet, PDF (14/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406
LTC3406-1.5/LTC3406-1.8
TYPICAL APPLICATIO S
Single Li-Ion 1.2V/600mA Regulator for High Efficiency and Small Footprint
V_IN
2.7V
TO 4.2V
C_IN^†
2.2µF
CER
4
V_IN
3
SW
LTC3406
1
RUN
5
V_FB
GND
2
2.2µH*
22pF
V_OUT
1.2V
C_OUT**
10µF
CER
301k
301k ^{*MURATA LQH32CN2R2M33}
** TAIYO YUDEN JMK316BJ106ML
3406 TA09 ^† TAIYO YUDEN LMK212BJ225MG
95
V_OUT = 1.2V
90
V_IN = 2.7V
85
V_IN = 4.2V
80
V_IN = 3.6V
75
70
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406 TA10
V_IN = 3.6V
20µs/DIV
V_OUT = 1.2V
I_LOAD = 0mA TO 600mA
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
3406 TA11
V_IN = 3.6V
20µs/DIV
V_OUT = 1.2V
I_LOAD = 200mA TO 600mA
Tiny 3.3V/600mA Buck Regulator
V_IN
5V
4
C_IN^†
V_IN
3
SW
2.2µH*
22pF
4.7µF
CER
LTC3406
V_OUT
3.3V
600mA
C_OUT**
10µF
1
5
CER
RUN V_FB
GND
2
301k
66.5k ^{*MURATA LQH32CN2R2M33}
** TAIYO YUDEN JMK316BJ106ML
3406 TA13 ^† TAIYO YUDEN JMK212BJ475MG
14
100
V_IN = 5V
95 ^{VOUT = 3.3V}
90
85
80
75
70
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406 TA14
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
V_IN = 5V
20µs/DIV
V_OUT = 3.3V
I_LOAD = 200mA TO 600mA
3406 TA15
3406 TA12
3406fa