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Maxim > Solutions > Computers: Motherboards

DDR Memory Power Supplies

The MAX8632 Fully Integrated DDR Power Supply provides a complete solution for DDR1, DDR2, and DDR3 power requirements.

The Quick-PWM™ control topology used on the VDDQ output provides fast transient response, reducing bulk capacitance requirements. VTT requirements are supported by a 3A sink/source linear device with integrated power switches, reducing total area and cost.

The MAX8632 allows flexible sequencing and standby power management using the SHDN-bar and STBY-bar inputs, which support all DDR operating states.


DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF Dual, 5A, 1.5MHz, Step-Down DC-DC Converter with Integrated High-Side Switches
MAX8653

First Step-Down DC-DC Converter with Integrated MOSFETs,
REFIN for Tracking and DDR Termination, Enable and POK for Sequencing
QV  PDF Precision Temperature Monitor for DDR Memory Modules
MAX6604

Allows high-accuracy (±1°C) temperature readings of memory modules.
QV  PDF Integrated DDR Power-Supply Solution for Desktops, Notebooks, and Graphic Cards
MAX8632

QV  PDF Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards
MAX8550, MAX8551

QV  PDF Dual-Synchronous Buck Controllers for Point-of-Load, Tracking, and DDR Memory Power Supplies
MAX8537, MAX8538, MAX8539

QV  PDF 4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications
MAX8553, MAX8554

4.5V to 28V Input, Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications Offer Fastest Transient Response
QV  PDF Low-Cost, High-Frequency, Current-Mode PWM Buck Controllers
MAX1953, MAX1954, MAX1957

QV  PDF Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies
MAX1917

Reduce Capacitors and Cost of DDR Supplies



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
MAX8550  2 28 0.7 5.5 1.8
2.5
20 20 Preset
Resistor
5 1 600 THIN QFN/28
THIN QFN/32
MAX8551  2 28 0.7 5.5 1.8
2.5
1.5 1.5 Preset
Resistor
5 1 600 THIN QFN/28
MAX8537  4.5 23 0.8 3.6  -  30 30 Resistor 7 2 1400 QSOP/28
MAX8538  4.5 23 0.8 3.6  -  30 30 Resistor 7 2 1400 QSOP/28
MAX8539  4.5 23 0.8 3.6  -  30 30 Resistor 7 2 1400 QSOP/28
MAX8553  4.5 28 0 3.6  -  25 25 Dyn. REF In
Resistor
1.2 1 550 QSOP/16
MAX8554  4.5 28 0.6 3.5  -  25 25 Resistor 1.2 1 550 QSOP/16
MAX1953  3 5.5 0.8 4.5  -  4 4 Resistor 1 1 1000 uMAX/10
MAX1954  3 13.2 0.8 4.5  -  25 25 Resistor 1 1 300 uMAX/10
MAX1957  3 5.5 0.4 4.5  -  3 3 Resistor 1 1 300 uMAX/10
MAX1917  4.5 22 0.4 5  -  25 25 Dyn. REF In
Resistor
0.8 1 550 QSOP/16
See All Step-Down Switching Regulators (222)

Key Specifications:   Temperature Sensors
Part Number Sensor Type Alarm Output Interface Accuracy (±°C) Parasite Power Temperature Threshold Temperature Resolution (Bits)
MAX6604  Local Alert 2-Wire/SMBus 1 No Programmable 11
See All Temperature Sensors (97)




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