LTC3406B-2 Datasheet, PDF (14/16 Pages) Linear Technology – 2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406B-2
TYPICAL APPLICATIO S
5V Input to 3.3V/0.6A Regulator
V_IN
5V
4
C_IN^†
V_IN
3
SW
2.2µH*
22pF
4.7µF
CER
LTC3406B-2
1
RUN
5
V_FB
GND
2
1M
221k
3406B TA13
*MURATA LQH32CN2R2M33
** TAIYO YUDEN JHK316BJ106ML
† _{TAIYO YUDEN JMK212BJ475MG}
V_OUT
3.3V
C_OUT**
10µF
CER
Efficiency vs Output Current
100 _{VOUT = 3.3V}
90 ^VIN ^{= 5V}
80
70
60
50
40
30
20
10
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406B TA14
Load Step
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
V_IN = 3.6V
20µs/DIV
V_OUT = 3.3V
I_LOAD = 0mA TO 600mA
Load Step
3406B TA15
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
V_IN = 3.6V
20µs/DIV
V_OUT = 3.3V
I_LOAD = 100mA TO 600mA
3406B TA16
14
sn3406b2 3406b2fs