Datasheet

LTC3565
22
3565fc
For more information www.linear.com/LTC3565
 LINEAR TECHNOLOGY CORPORATION 2009
LT 1013 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
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FAX: [phone]
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www.linear.com/LTC3565
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PART NUMBER DESCRIPTION COMMENTS
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= 0.6V,
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Q
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SD
< 1µA, ThinSOT™
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OUT(MIN)
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Q
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IN
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= 0.8V,
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Q
= 26µA, I
SD
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Q
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LTC3564 1.25A, 2.25MHz Synchronous Step-Down Regulator 96% Efficiency, V
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TYPICAL APPLICATION
1mm Height, 2MHz, Li-Ion to 1.8V Converter
OUTPUT CURRENT (mA)
0.1 1 10
0
EFFICIENCY (%)
40
30
100
1000100
10000
3565 TA04b
20
10
60
50
80
70
90
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
OUT
= 1.8V
f
O
= 2MHz
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA TO 1.25A
V
OUT
100mV/DIV
AC COUPLED
I
L
1A/DIV
I
LOAD
1A/DIV
3565 TA04c
40µs/DIV
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 250mA TO 1.25A
3565 F04d
40µs/DIV
V
OUT
100mV/DIV
AC COUPLED
I
L
1A/DIV
I
LOAD
1A/DIV
Efficiency vs Output Current
PV
IN
LTC3565
PGOOD PGOOD
SW
SV
IN
RUN
SYNC/MODE
V
FB
ITH
RT
L1
0.9µH
V
OUT
1.8V
AT 1.25A
V
IN
2.5V
TO 4.2V
GND
R5
100k
C4, 22pF
R4
80.6k
R1
232k
R2
464k
3565 TA04a
R3
13.3k
C3
470pF
C2
10µF
× 2
C1
10µF
C1, C2: TAIYO YUDEN JMK107BJ106MA
L1: FDK MIPW3226DORGM