Overview
The ADP3211AMNR2G, produced by Onsemi, is a highly efficient, 7-bit programmable, single-phase synchronous buck controller. This device is optimized for converting notebook battery voltage to the supply voltage required by high-performance Intel chipsets, particularly those conforming to the Intel IMVP-6.5 specifications. It features an integrated driver and a multi-mode architecture, allowing for programmable switching frequency and load line slope adjustments to optimize efficiency and voltage regulation. The controller supports On-The-Fly (OTF) output voltage changes and includes robust protection mechanisms such as current overload protection and short-circuit protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.3 to 22 | V |
| Output Voltage Range | 0 to 1.5 | V |
| Switching Frequency | 100 to 1000 | kHz |
| Operating Temperature Range | -40 to 100 | °C |
| Package Type | 32-lead QFN | |
| Supply Current (EN = H) | 6.0 to 60 | mA |
| Supply Current (EN = L) | 10 to 200 | μA |
| VCC UVLO Threshold | 4.0 to 4.15 | V |
| VCC Hysteresis | 150 | mV |
| Power Good PWRGD Low 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
- Programmable switching frequency and load line slope
- 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 and voltage identification (VID) OTF transients
- 7-bit, digitally programmable DAC with 0 V to 1.5 V output range
- Short-circuit protection and current monitor output signal
- Pb-free and fully RoHS compliant
Applications
The ADP3211AMNR2G is primarily used in notebook power supplies for next-generation Intel chipsets and Intel Netbook Atom processors. Its high efficiency, programmable features, and robust protection mechanisms make it an ideal choice for powering high-performance CPU and GMCH components.
Q & A
- What is the primary function of the ADP3211AMNR2G?
The ADP3211AMNR2G is a synchronous buck controller designed to convert notebook battery voltage to the supply voltage required by high-performance Intel chipsets. - What is the input voltage range of the ADP3211AMNR2G?
The input voltage range is from 3.3 V to 22 V. - What is the output voltage range of the ADP3211AMNR2G?
The output voltage range is from 0 V to 1.5 V. - What is the switching frequency range of the ADP3211AMNR2G?
The switching frequency range is from 100 kHz to 1000 kHz. - What are the key protection features of the ADP3211AMNR2G?
The key protection features include current overload protection, short-circuit protection, and power-good output with masking. - Is the ADP3211AMNR2G compatible with Intel IMVP-6.5 specifications?
Yes, it is fully compatible with Intel IMVP-6.5 CPU and GMCH chipset voltage regulator specifications. - What is the package type of the ADP3211AMNR2G?
The package type is a 32-lead QFN. - What are the operating temperature ranges for the ADP3211AMNR2G?
The operating temperature range is from -40°C to 100°C. - Does the ADP3211AMNR2G support On-The-Fly (OTF) output voltage changes?
Yes, it supports OTF output voltage changes requested by the chipset. - Is the ADP3211AMNR2G Pb-free and RoHS compliant?
Yes, it is Pb-free and fully RoHS compliant.
