Overview
The ADP3211MNR2G, produced by Onsemi, is a highly efficient, single-phase, synchronous buck switching regulator controller. This device is optimized for converting notebook battery voltage to the supply voltage required by high-performance Intel chipsets. It features an integrated 7-bit DAC that reads a VID code directly from the chipset or CPU to set the GMCH render voltage or the CPU core voltage within a range of 0 V to 1.5 V. The ADP3211 is designed to operate over an extended commercial temperature range of −40°C to 100°C and is available in a 32-lead QFN package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.3 to 22 | V |
| Output Voltage Range | 0 to 1.5 | V |
| Switching Frequency (RPM Mode) | 100 to 1000 | kHz |
| Operating Temperature Range | −40 to 100 | °C |
| Junction Temperature | 125 | °C |
| Package Type | 32-lead QFN | |
| VCC Supply Voltage Range | 4.5 to 5.5 | V |
| VCC UVLO Threshold | 4.0 to 4.15 | V |
| Power Good Output Voltage | 75 to 200 | mV |
Key Features
- Single-chip solution with integrated MOSFET drivers
- Fully compatible with Intel® IMVP-6.5 CPU and GMCH chipset voltage regulator specifications
- 7-bit, digitally programmable DAC with 0 V to 1.5 V output
- Automatic power-saving modes to maximize efficiency during light load operation
- Soft transient control to reduce inrush current and audio noise
- Independent current limit and load line setting inputs for additional design flexibility
- Built-in power-good masking supports voltage identification (VID) OTF transients
- Short-circuit protection and current monitor output signal
- Pb-free and fully RoHS compliant
Applications
- Notebook power supplies for next-generation Intel chipsets
- Intel Netbook Atom processors
Q & A
- What is the primary function of the ADP3211MNR2G?
The ADP3211MNR2G is a single-phase, synchronous buck switching regulator controller designed to convert notebook battery voltage to the supply voltage required by high-performance Intel chipsets.
- What is the temperature range for the ADP3211MNR2G?
The device operates over an extended commercial temperature range of −40°C to 100°C.
- What is the output voltage range of the ADP3211MNR2G?
The output voltage range is from 0 V to 1.5 V, set by a 7-bit DAC.
- What package type is the ADP3211MNR2G available in?
The device is available in a 32-lead QFN package.
- Does the ADP3211MNR2G support power-saving modes?
Yes, it includes automatic power-saving modes to maximize efficiency during light load operation.
- What kind of protection does the ADP3211MNR2G offer?
The device features short-circuit protection and current overload protection.
- Is the ADP3211MNR2G RoHS compliant?
Yes, the device is Pb-free and fully RoHS compliant.
- How does the ADP3211MNR2G handle load transients?
The device includes a programmable load line slope function to adjust the output voltage as a function of the load current, ensuring optimal voltage positioning during load transients.
- Can the ADP3211MNR2G handle on-the-fly output voltage changes?
Yes, the device supports On-The-Fly (OTF) output voltage changes requested by the chipset.
- What is the typical switching frequency range of the ADP3211MNR2G in RPM mode?
The switching frequency in RPM mode typically ranges from 100 kHz to 1000 kHz.
