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| LTC3546_15 Datasheet, PDF (24/30 Pages) Linear Technology – Dual Synchronous, 3A/1A or 2A/2A Configurable Step-Down DC/DC Regulator | |||
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LTC3546
Applications Information
VIN
2.25V TO 5.5V
VOUT2
1.8V, 2A
COUT2
47µF
CIN
22µF
R5
100k
L2
0.56µH
CFF2
100pF
VIN1 VCCA VCCD VIN2
SYNC/MODE
PGOOD2
PGOOD1
SW2A
SW2B
SW1
SW1D
R3 R4
60.4k 30.1k
VIN
RUN2 LTC3546 RUN1
VFB2
VFB1
VIN
RITH2
13k
CITH2
1000pF
BMC2
BMC1
TRACK/SS2 TRACK/SS1
PHASE
FREQ
ITH2
ITH1
PGND2 GNDA PGND1
EXPOSED PAD
R6
100k
VIN
VIN
L1
0.56µH
CFF1
100pF
R2 R1
30.1k 30.1k
VOUT1
1.2V, 2A
COUT1
47µF
RITH1
13k
CITH1
1000pF
RFREQ
143k
3546 F07
Figure 7. Typical Schematic for 2A/2A Regulator
3546fc
24
For more information www.linear.com/3546
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