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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 60mohm 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 (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) Preset VOUT (V) IOUT (A) IOUT (A) Output Adj. Method Operating Current, ICC (max) (mA) Number of DC-DC Outputs Operating Freq. (kHz) Package
MAX8581  2.7 5.5 0 5  -  0.6 0.6 Dyn. REF In
Resistor
4 1 2500 THIN QFN (Dual)/10
MAX8582  2.7 5.5 0 5  -  0.6 0.6 Dyn. REF In
Resistor
4 1 1500 THIN QFN (Dual)/10
MAX8640Y  2.7 5.5 1 2.5 1.1
1.2
1.3
1.5
1.8
2.5
0.5 0.5 Preset
Resistor
0.048 1 2000 MicroDFN/6
SC-70/6
MAX8640Z  2.7 5.5 1.1 1.8 1.1
1.2
1.3
1.5
1.8
0.5 0.5 Preset
Resistor
0.048 1 4000 MicroDFN/6
SC-70/6
SC70/6
MAX8560  2.7 5.5 0.6 2.5  -  0.5 0.5 Resistor 0.08 1 4000 SOT-23/5
MAX8561  2.7 5.5 0.6 2.5  -  0.5 0.5 Resistor 0.08 1 4000 THIN QFN (Dual)/8
MAX8562  2.7 5.5 0.6 2.5  -  0.5 0.5 Resistor 0.08 1 4000 THIN QFN (Dual)/8
MAX1572  2.6 5.5 0.75 2.5  -  0.8 0.8 Digital/VID 0.08 1 2000 THIN QFN/12
MAX1927  2.6 5.5 0.75 5  -  1 1 Resistor 0.24 1 1000 uMAX/10
MAX1928  2.6 5.5 1.5 2.5 1.5
1.8
2.5
1 1 Preset 0.24 1 1000 uMAX/10
MAX1920  2 5.5 1.25 4  -  0.4 0.4 Resistor 0.07 1 1200 SOT-23/6
THIN QFN (Dual)/6
MAX1921  2 5.5 1.5 3.3 1.5
1.8
2.5
3.3
0.4 0.4 Preset
Resistor
0.07 1 1200 SOT-23/6
MAX1820  2.6 5.5 0.4 3.5  -  0.6 0.6 Dyn. REF In
Preset
Resistor
0.36 1 1000 UCSP/0
UCSP/10
uMAX/10
MAX1821  2.6 5.5 1.25 5.5  -  0.6 0.6 Preset
Resistor
0.36 1 1000 uMAX/10
MAX1733  2.7 5.5 1.25 2  -  0.25 0.25 Resistor 0.07 1 1200 SOT-23/5
MAX1734  2.7 5.5 1.5 1.8 1.5
1.8
0.25 0.25 Preset
Resistor
0.07 1 1200 SOT-23/5
MAX1692  2.7 5.5 1.25 5.5  -  0.6 0.6 Preset
Resistor
0.14 1 750 uMAX/10
See All Step-Down Switching Regulators (222)



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