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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.
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| 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
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| QV PDF |
Dual-Synchronous Buck Controllers for Point-of-Load, Tracking, and DDR Memory Power Supplies
MAX8537, MAX8538, MAX8539
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| 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
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| 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:
Switch-Mode DC-DC Power Supplies |
| Part Number |
Topology |
VIN (min) (V) |
VIN (max) (V) |
Number of DC-DC Outputs |
Preset VOUT (V) |
Digital/VID Programmed Output |
Min. Adjustable VOUT (V) |
Max. Adjustable VOUT (V) |
IOUT (A) |
Operating Current, ICC (max) (mA) |
Fixed Freq/PWM Operation |
Operating Freq. (kHz) |
Internal Power Switch(es) |
Synchronous Rectifier |
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MAX1917
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Step-Down
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4.5
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22
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1
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-
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No
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0.4
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5
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25
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0.8
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Yes
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200
300
400
550
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No
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Yes
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MAX1953
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Step-Down
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3
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5.5
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1
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-
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No
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0.8
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4.5
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4
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1
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Yes
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1000
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No
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Yes
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MAX1954
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Step-Down
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3
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13.2
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1
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-
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No
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0.8
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4.5
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25
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1
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Yes
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300
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No
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Yes
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MAX1957
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Step-Down
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3
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5.5
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1
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-
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No
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0.4
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4.5
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3
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1
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Yes
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300
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No
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Yes
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MAX8537
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Step-Down
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4.5
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23
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2
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-
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No
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0.8
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-
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30
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7
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Yes
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-
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No
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Yes
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MAX8538
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Step-Down
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4.5
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23
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2
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-
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No
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0.8
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-
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30
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7
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Yes
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-
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No
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Yes
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MAX8539
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Step-Down
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4.5
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23
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2
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-
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No
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0.8
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-
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30
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7
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Yes
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-
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No
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Yes
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MAX8550
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Step-Down
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2
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28
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1
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1.8
2.5
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No
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0.7
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5.5
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20
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5
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Yes
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200
300
450
600
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No
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Yes
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MAX8551
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Step-Down
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2
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28
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1
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1.8
2.5
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No
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0.7
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5.5
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1.5
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5
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Yes
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200
300
450
600
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No
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Yes
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MAX8553
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Step-Down
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4.5
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28
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1
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-
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No
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0
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3.6
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25
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1.2
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Yes
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200
300
400
550
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No
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Yes
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MAX8554
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Step-Down
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4.5
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28
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1
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-
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No
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0.6
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3.5
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25
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1.2
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Yes
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200
300
400
550
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No
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Yes
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| See All Switch-Mode DC-DC Power Supplies (418) |
| Key Specifications:
Temperature Sensors |
| Part Number |
Sensor Type |
Alarm Output |
Interface |
Accuracy (±°C) |
Parasite Power |
Temperature Threshold |
Temperature Resolution (Bits) |
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MAX6604
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Local
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Alert
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2-Wire/SMBus
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1
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No
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Programmable
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11
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| See All Temperature Sensors (97) |
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