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Part Number: NE57810
Description: The NE57810 is designed to provide power for termination of a Double Data Rate (DDR) SDRAM memory bus. It...
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NE57810
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General Description
NE57810 General Description
The NE57810 is designed to provide power for termination of a Double Data Rate (DDR) SDRAM memory bus. It significantly reduces parts count, board space, and overall system cost compared to previous solutions.
The NE57810 DDR termination regulator maintains an output voltage (DDR reference bus voltage) that is one-half that of the RAM supply voltage. It is capable of providing up to ±3.5 A for sustained periods. Overcurrent limiting protects the NE57810 from inrush currents at start-up, and overtemperature shutdown protects the device in extreme temperature situations.
The SPAK-5 (SOT756) package is thermally robust for flexibility of thermal design. Because the NE57810 is a linear regulator, no external inductors or switching FETs are necessary. Fast response to load changes reduces the need for output capacitors.
NE57810 Maximum Ratings
| SYMBOL | PARAMETER | MIN. | TYP. | MAX. | UNIT |
| VDD | VDD to VSS voltage | 0.3 | +3.6 | V | |
| Tamb | Operating ambient temperature | +70 | |||
| Tstg | Storage temperature | 40 | +165 | ||
| Tj | Junction temperature | 160 | |||
| Rth(j-a) | Thermal resistance, junction to ambient | 16.5 | /W | ||
| PD | Power dissipation (Note 1) | 3.3 | W |
NE57810 Features
• Fast transient response time
• Overtemperature protection
• Overcurrent protection
• Commercial (0 °C to +70 °C) temperature range
• Reduced need for external components (switching FETs, inductors, decoupling capacitors)
• Internal divider maintains termination voltage at 1/2 memory supply voltage
• Reference out for other memory and control components
• Optional external voltage reference in for flexible application
• Compatible with DDR-I (VDD = 2.5 V) or DDR-II (VDD = 1.8 V) SDRAM systems
• Overtemperature protection
• Overcurrent protection
• Commercial (0 °C to +70 °C) temperature range
• Reduced need for external components (switching FETs, inductors, decoupling capacitors)
• Internal divider maintains termination voltage at 1/2 memory supply voltage
• Reference out for other memory and control components
• Optional external voltage reference in for flexible application
• Compatible with DDR-I (VDD = 2.5 V) or DDR-II (VDD = 1.8 V) SDRAM systems
NE57810 Typical Application
• Desktop microcomputer systems
• Workstations
• Servers
• Game machines
• Set top boxes
• Embedded systems
• Digital video recorders
• Workstations
• Servers
• Game machines
• Set top boxes
• Embedded systems
• Digital video recorders
NE57810 Connection Diagram
NE57810
PDF/DataSheet Download
- Datasheet: NE57810
- File Size: 164345 KB
- Manufacturer: PHILIPS [Philips Semiconductors]
- Click here to Download
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