DC DC Cntrlr Single-OUT Sync Buck 4.5V to 5.5V Input 20Pin TSSOP T/R
DESCRIPON
The LM2636 is a high speed controller designed specifically for use in synchronous DC/DC buck converters for advance d microprocessors. A 5-bit DAC accepts the VID code directly from the CPU and adjusts the output voltage from 1.3V to 3.5V. It provides the power good, over-voltage protection, and output enable features as required by Intel VRM specifications. Current limiting is achieved by monitoring the voltage drop across the rDS_ON of the high side MOSFET, which eliminates an expensive current sense resistor.
FEATURES
• 1.3V to 3.5V 5-Bit Programmable Output Voltage
• Synchronous Rectification
• Power Good Flag and Output Enable
• Over-Voltage Protection
• Initial Output Accuracy: 1.5% Over Temperature
• Current Limit without External Sense Resistor
• Adaptive Non-Overlapping MOSFET Gate Drives
• Adjustable Switching Frequency: 50 kHz to 1 MHz
• Dynamic Output Voltage Positioning
• 1.256V Reference Voltage Available Externally
• Plastic SOIC-20 Package and TSSOP-20 Package
APPLICATIONS
• Motherboard Power Supply/VRM for Cyrix Gxm, Cyrix Gxi, Cyrix MII, Pentium II, Pentium Pro, 6x86 and K6 Processors
• 5V to 1.3V–3.5V High Current Power Supplies
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM2636MTCX/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM2636MTC/NOPB 德州仪器 | 完全替代 | LM2636MTCX/NOPB和LM2636MTC/NOPB的区别 |