LTC3560_15 Datasheet, PDF (13/16 Pages) Linear Technology – 2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT

APPLICATIONS INFORMATION
V_IN
2.7V
TO 4.2V
C_IN*
10μF
CER
4
V_IN
3
SW
LTC3560
1
RUN
6
5
SYNC/MODE V_FB
GND
2 ^{3560 F06a}
1.5μH**
10pF
976k
309k
* TDK C2012X5R0J106M
**TDK VLF3010AT-1R5N1R2
Figure 6a
V_OUT
2.5V
C_OUT*
10μF
CER
LTC3560
100
V_OUT = 2.5V
90
80
Burst Mode
70
OPERATION
60
PULSE
SKIPPING
50
40
30
20
10
0
0.1
V_IN = 3.6V
V_IN = 4.2V
1
10
100
OUTPUT CURRENT (mA)
1000
3560 F06b
Figure 6b
V_OUT
200mV/DIV
AC COUPLED
I_L
1A/DIV
I_LOAD
1A/DIV
V_IN = 3.6V
20μs/DIV
V_OUT = 2.5V
I_LOAD = 100mA TO 800mA
Burst Mode OPERATION
Figure 6c
3560 F06c
V_OUT
200mV/DIV
AC COUPLED
I_L
1A/DIV
I_LOAD
1A/DIV
V_IN = 3.6V
20μs/DIV
V_OUT = 2.5V
I_LOAD = 100mA TO 800mA
PULSE SKIPPING MODE
Figure 6d
3560 F06d
3560fb
13