Overview
The CM3202-00DE from onsemi is a dual-output low noise linear regulator designed to meet the specifications for DDR-SDRAM VDDQ supply and termination voltage VTT supply, particularly adhering to SSTL-2 and SSTL-3 standards. This regulator is integrated with power MOSFETs, enabling it to source up to 2 A of VDDQ continuous current and source or sink up to 2 A of VTT continuous current. It operates over an industrial ambient temperature range of -40°C to 85°C and is packaged in an 8-lead WDFN package, which offers low thermal resistance and high power dissipation capabilities.
Key Specifications
| Parameter | Rating/Value | Units |
|---|---|---|
| Input Voltage - Max | 3.6 | V |
| Minimum Operating Temperature | -40 | °C |
| Maximum Operating Temperature | 85 | °C |
| VDDQ Output Voltage Range | 1.7 to 2.8 | V |
| VDDQ Dropout Voltage at 2 A | 500 mV | mV |
| VTT Current Source/Sink | ±2 A | A |
| Output Current VDDQ/VTT Continuous | 2 A / ±2 A | A |
| Thermal Shutdown Temperature | 170°C | °C |
| Package Type | WDFN8 |
Key Features
- Dual-output linear regulator for DDR-SDRAM VDDQ and VTT supplies.
- Integrated power MOSFETs for high current capability.
- Adjustable VDDQ output voltage from 1.7 V to 2.8 V.
- Typical VDDQ dropout voltage of 500 mV at 2 A load current.
- VTT tracking at 50% of VDDQ.
- Excellent load and line regulation, low noise.
- Fast transient response to load changes.
- Meets JEDEC DDR-I and DDR-II memory power specifications.
- No inductors required; low external component count.
- Built-in over-current limit and thermal shutdown protection.
- Low quiescent current and shutdown mode for reduced power consumption.
- Pb-free and RoHS compliant.
Applications
- DDR memory and active termination buses.
- Desktop computers and servers.
- Residential and enterprise gateways.
- DSL modems and routers.
- DVD recorders and 3D AGP cards.
- LCD TVs and set-top boxes (STBs).
Q & A
- What is the CM3202-00DE used for?
The CM3202-00DE is used as a dual-output linear regulator for DDR-SDRAM VDDQ and VTT supplies, adhering to SSTL-2 and SSTL-3 specifications.
- What is the maximum operating temperature of the CM3202-00DE?
The maximum operating temperature is 85°C.
- How much current can the VDDQ output source?
The VDDQ output can source up to 2 A of continuous current.
- What is the typical dropout voltage for VDDQ at 2 A load current?
The typical dropout voltage for VDDQ at 2 A load current is 500 mV.
- Does the CM3202-00DE have built-in protection features?
Yes, it has built-in over-current limit and thermal shutdown protection.
- What is the thermal shutdown temperature of the CM3202-00DE?
The thermal shutdown temperature is 170°C.
- Is the CM3202-00DE Pb-free and RoHS compliant?
Yes, it is Pb-free and RoHS compliant.
- How is the VDDQ output voltage adjusted?
The VDDQ output voltage is adjustable using an external resistor divider.
- What type of package does the CM3202-00DE come in?
The CM3202-00DE comes in an 8-lead WDFN package.
- What are some common applications of the CM3202-00DE?
Common applications include DDR memory, desktop computers, servers, DSL modems, routers, and LCD TVs.
