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| LTC3406B-2 Datasheet, PDF (13/16 Pages) Linear Technology – 2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT | |||
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TYPICAL APPLICATIO S
Single Li-Ion 1.2V/600mA Regulator for
High Efficiency and Small Footprint
VIN
2.7V
TO 4.2V
CINâ
4.7µF
CER
4
VIN
3
SW
LTC3406B-2
1
RUN
5
VFB
GND
2
2.2µH*
22pF
301k
301k
3406B TA09
*MURATA LQH32CN2R2M33
** TAIYO YUDEN JHK316BJ106ML
â TAIYO YUDEN JMK212BJ475MG
VOUT
1.2V
COUT**
10µF
CER
Efficiency vs Output Current
100
VOUT = 1.2V
90 TA = 25°C
80
70
60
VIN = 2.7V
50
VIN = 4.2V
40
VIN = 3.6V
30
20
10
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406B G02
LTC3406B-2
Load Step
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
ILOAD = 0mA TO 600mA
3406B TA11
Load Step
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
ILOAD = 100mA TO 600mA
3406B TA12
sn3406b2 3406b2fs
13
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