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| LTC3619B_15 Datasheet, PDF (15/20 Pages) Linear Technology – 400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit | |||
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Applications Information
VIN
2.5V TO 5.5V
C1
VOUT2
CF2
R4
COUT2
RUN2 VIN RUN1
L2
PGOOD2 PGOOD1
SW2
SW1
LTC3619B
VFB2
VFB1
RLIM GND
R3
RLIM
CLIM
L1
CF1
R2
R1
VOUT1
COUT1
BOLD LINES INDICATE HIGH CURRENT PATHS
3619B F03a
Figure 3a. LTC3619B Layout Diagram (See Board Layout Checklist)
LTC3619B
VIN
GND
VOUT1
VIN VIA
GND VIA
COUT1
CIN
VOUT2
L2
COUT2
VIA TO VOUT2
L1
VIN
SW1
SW2
PGD1
PGOOD2
RLIM
RUN2
RUN1
VFB2
VFB1
R3
R1
R4
R2
CF2
CF1
GND
RLIM CLIM
VIA TO VOUT1
Figure 3b. LTC3619B Suggested Layout
3619B F03b
3619bfb
15
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