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| LTC3870_15 Datasheet, PDF (17/22 Pages) Linear Technology – PolyPhase Step-Down Slave Controller for LTC3880/LTC3883 with Digital Power System Management | |||
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Applications Information
LTC3870
ITH1
ISENSE1+
ISENSE1â
TG1
SW1
BOOST1
LTC3870 BG1
fIN SYNC
VIN
RUN0
RUN1
PGND
SGND
ISENSE0â
ISENSE0+
INTVCC
BG0
BOOST0
ITH0
SW0
TG0
L1
VOUT1
CB1
M1
M2
1µF
CERAMIC
CVIN
RIN
VIN
CINTVCC
CIN
1µF
CERAMIC
M3
M4
CB0
D1
COUT1
COUT0
GND
D0
VOUT0
L0
3870 F06
Figure 5. Recommended Printed Circuit Layout Diagram
SW1
D1
L1
VOUT1
COUT1
VIN
RIN
CIN
BOLD LINES INDICATE
HIGH SWITCHING
CURRENT. KEEP LINES
TO A MINIMUM LENGTH.
SW0
D0
L0
VOUT0
COUT0
Figure 6. Branch Current Waveforms
For more information www.linear.com/LTC3870
RL1
RL0
3870 F07
3870fa
17
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