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| LTC3406AB-2_15 Datasheet, PDF (14/16 Pages) Linear Technology – 2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT | |||
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LTC3406AB-2
TYPICAL APPLICATIONS
Single Li-Ion 1.2V/600mA Regulator for
High Efï¬ciency and Small Footprint
2.2µH*
VIN
CINâ
VIN
SW
4.7µF
CER
LTC3406AB-2
22pF
VOUT
1.2V
600mA
COUT**
10µF
CER
RUN VFB
GND
309k
309k
* MURATA LQH32CN2R2M33
** TAIYO YUDEN JMK316BJ106ML
3406AB2 TA06 â TAIYO YUDEN JMK212BJ475MG
Load Step
VOUT
200mV/DIV
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
ILOAD = 0mA TO 600mA
3406AB2 TA08
Load Step
VOUT
100mV/DIV
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
ILOAD = 100mA TO 600mA
3406AB2 TA10
Efï¬ciency vs Load Current
100
VOUT = 1.2V
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
1
10
100
OUTPUT CURRENT (mA)
1000
3406AB2 TA07
Load Step
VOUT
100mV/DIV
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
ILOAD = 50mA TO 600mA
3406AB2 TA09
Load Step
VOUT
100mV/DIV
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
ILOAD = 200mA TO 600mA
3406AB2 TA11
14
3406ab2f
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