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Maxim > Solutions > USB

Switchmode DC-DC Power Supplies

DATA SHEETS
Display Title/Parts Key Advantages
QV  PDF Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters
MAX8640Y, MAX8640Z

Smallest 2mm x 2.1mm SC70 Package, the Industry's Smallest Total Solution Size, and Most Robust 4MHz/2MHz Step-Down DC-DC Converters on the Market that Can Deliver 500mA with Over 93% Efficiency
QV  PDF 2.5MHz/1.5MHz Step-Down Converters with 60mΩ Bypass in TDFN for CDMA PA Power
MAX8581, MAX8582

Overall Smallest Solution 1.5MHz Step-Down DC-DC Converters Deliver 600mA with Up to 94% Efficiency in a Small TDFN Package
QV  PDF 4MHz, 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN
MAX8560, MAX8561, MAX8562

First 4MHz Step-Down DC-DC Converters Deliver 500mA with Over 90% Efficiency in SOT23 and TDFN
QV  PDF 800mA, 2MHz, PWM DC-to-DC Step-Down Converter with Reset
MAX1572

First 800mA, Sub-1V, 2MHz, PWM, Step-Down DC-DC Uses Tiny 2.2µH Inductor, Includes Reset Output
QV  PDF Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters
MAX1927, MAX1928

QV  PDF Low-Voltage, 400mA Step-Down DC-DC Converters in SOT23
MAX1920, MAX1921

QV  PDF WCDMA Cellular Phone 600mA Buck Regulators
MAX1820, MAX1820Y, MAX1820Z, MAX1821, MAX1821X

QV  PDF Low-Voltage, Step-Down DC-DC Converters in SOT23
MAX1733, MAX1734

High-Efficiency DC-DC Solution for Low-Voltage Logic Supplies
QV  PDF Low-Noise, 5.5V Input, PWM Step-Down Regulator
MAX1692

Tiny Switcher Delivers 600mA and 10x Better Performance Than LDO



Key Specifications:  Step-Down Switching Regulators
Part Number VIN
(V)
VIN
(V)
VOUT
(V)
VOUT
(V)
Preset VOUT
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Output Adjust. Method DC-DC Outputs Oper. Freq.
(kHz)
Package/Pins Smallest Available Pckg.
(mm2)
min max min max max w/pins
MAX8581  2.7 5.5 0 5 - 0.6 0.6
Dyn. REF In
Resistor
1 2500
TDFN-EP/10
9.6
MAX8582  2.7 0 5 - 0.6 0.6
Dyn. REF In
Resistor
1500
TDFN-EP/10
9.6
MAX8640Y  2.7 1 2.5
1
1.1
1.2
1.3
1.5
1.8
2.5
0.5 0.5
Preset
Resistor
2000
µDFN/6
SC70/6
1.6
MAX8640Z  2.7 1.1 1.8
1.1
1.2
1.3
1.5
1.8
0.5 0.5
Preset
Resistor
4000
µDFN/6
SC70/6
1.6
MAX8560  2.7 0.6 2.5 - 0.5 0.5 Resistor 4000
TSOT/5
8.3
MAX8561  2.7 0.6 2.5 - 0.5 0.5 Resistor 4000
TDFN-EP/8
9.6
MAX8562  2.7 0.6 2.5 - 0.5 0.5 Resistor 4000
TDFN-EP/8
9.6
MAX1572  2.6 0.75 2.5 - 0.8 0.8 Digital/VID 2000
TQFN/12
16.8
MAX1927  2.6 0.75 5 - 1 1 Resistor 1000
µMAX/10
15.4
MAX1928  2.6 1.5 2.5
1.5
1.8
2.5
1 1 Preset 1000
µMAX/10
15.4
MAX1920  2 1.25 4 - 0.4 0.4 Resistor 1200
SOT/6
TDFN-EP/6
9
MAX1921  2 1.5 3.3
1.5
1.8
2.5
3
3.3
0.4 0.4
Preset
Resistor
1200
SOT/6
9
MAX1820  2.6 0.4 3.5 - 0.6 0.6
Dyn. REF In
Preset
Resistor
1000
µMAX/10
UCSP/10
3.3
MAX1821  2.6 1.25 5.5 - 0.6 0.6
Preset
Resistor
1000
µMAX/10
15.4
MAX1733  2.7 1.25 2 - 0.25 0.25 Resistor 1200
SOT/5
9
MAX1734  2.7 1.5 1.8
1.5
1.8
0.25 0.25
Preset
Resistor
1200
SOT/5
9
MAX1692  2.7 1.25 5.5 - 0.6 0.6
Preset
Resistor
750
µMAX/10
15.4
See All Step-Down Switching Regulators (264)



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