MAX17551 Datasheet, PDF (18/20 Pages) Maxim Integrated Products – Synchronous Step-Down DC-DC Converter

MAX17551
60V, 50mA, Ultra-Small, High-Efficiency
Synchronous Step-Down DC-DC Converter
with 22µA No-Load Supply Current
Typical Application Circuits (continued)
VIN
4V TO 45V
C_IN
1µF
R3
69.8kΩ
IN
LX
MAX17551
EN/UVLO
GND
SS
V_OUT
MODE
FB
RT/SYNC
RESET
L1
100µH
VOUT
3.3V
C_OUT
10µF
R4
22.1Ω
C1
0.22µF
R1
158kΩ
R2
49.9kΩ
VIN
4V TO 24V
C_IN
1µF
R3
69.8kΩ
IN _MAX17551 LX
EN/UVLO
GND
SS
VOUT
MODE
FB
RT/SYNC
RESET
L1
68µH
C_OUT
10µF
VOUT
1.8V
R1
127kΩ
R2
100kΩ
L1 COILCRAFT LPS3015-104M
C_OUT MURATA 10µF/X7R/6.3V/0805 (GRM21BR70J106K)
C_IN MURATA 1µF/X7R/100V/1206 (GRM31CR72A105K)
Figure 9. Small-Footprint 3.3V, 50mA Regulator
L1 COILCRAFT LPS3015-683M
C_OUT MURATA 10µF/X7R/6.3V/0805 (GRM21BR70J106K)
C_IN MURATA 1µF/X7R/100V/1206 (GRM31CR72A105K)
Figure 10. Small-Footprint 1.8V, 50mA Regulator
VIN
15V TO 60V
C_IN
1µF
R3
69.8kΩ
IN
LX
MAX17551
EN/UVLO
GND
SS
VOUT
MODE
FB
RT/SYNC
RESET
L1
470µH
C_OUT
4.7µF
VOUT
12V
R1
348kΩ
R2
24.9kΩ
L1 COILCRAFT LPS4018-474M
C_OUT MURATA 4.7µF/X7R/16V/0805 (GRM21BR71C475K)
C_IN MURATA 1µF/X7R/100V/1206 (GRM31CR72A105K)
Figure 11. Small-Footprint 12V, 50mA Step-Down Regulator
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