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| LTC3548-1 Datasheet, PDF (14/16 Pages) Linear Technology – Dual Synchronous, Fixed Output 2.25MHz Step-Down DC/DC Regulator | |||
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LTC3548-1
TYPICAL APPLICATIONS
1mm Proï¬le Core and I/O Supplies
VIN
2.7V TO 5.5V
VOUT2
1.575V
400mA
C3
10μF
CER
C1
10μF
CER
L2
4.7μH
CFF2
330pF
VIN RUN1 RUN2
LTC3548-1
SW2
SW1
VOUT2
VOUT1
VFB2
GND
VFB1
L1
2.2μH
CFF1
330pF
VOUT1
1.8V
800mA
C2
10μF
CER
3548-1 TA07
C1, C2: MURATA GRM219R60J106KE19
C3: MURATA GRM219R60J475KE19
L1: COILTRONICS LPO3310-222MX
L2: COILTRONICS LPO3310-472MX
*IF C1 IS GREATER THAN 3" FROM POWER SOURCE,
ADDITIONAL CAPACITANCE MAY BE REQUIRED.
Efï¬ciency vs Load Current
100
95
90
VOUT1 = 1.8V
85
VOUT2 = 1.575V
80
75
70
65
60
1
10
100
LOAD CURRENT (mA)
1000
3548-1 G11
35481fb
14
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