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FAN5632MPX 数据表(PDF) 1 Page - Fairchild Semiconductor |
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FAN5632MPX 数据表(HTML) 1 Page - Fairchild Semiconductor |
1 / 13 page October 2007 © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5631/FAN5632 Rev. 1.0.2 FAN5631 / FAN5632 Regulated Step-Down Charge Pump DC/DC Converter Features 90% Peak Efficiency Low EMI Low Ripple Selectable Output Voltage:1.2V/1.5V for FAN5631 Efficiency Optimizer Feature for FAN5632 Input Voltage Range: 2.2V to 5.5V Output Current: Up to 250mA ±5% Output Voltage Accuracy 30µA Operating Current ICC<1mA in Shutdown Mode 1.5MHz Operating Frequency Shutdown Isolates Output from Input Soft-Start Limits Inrush Current Short-Circuit and Over-Temperature Protection Minimum External Component Count 10-Lead 3x3mm MLP Package Applications Cell Phones Handheld Computers Portable Electronic Equipment Core Supply to Next-Generation Processors Low-Voltage DC Bus Digital Cameras DSP Supplies Description The FAN5631/FAN5632 is an advanced, third- generation switched capacitor step-down DC/DC converter utilizing Fairchild's proprietary ScalarPump technology. This innovative architecture utilizes scalar switch re-configuration and fractional switching techniques to produce low output ripple, lower ESR spikes, and improve efficiency over a wide load range. The FAN5631/FAN5632 produces a fixed regulated output voltage from an input voltage of 2.2V to 5V. To maximize efficiency, the FAN5631/5632 achieves regulation by skipping pulses. Depending on load current, the size of the switches are scaled dynamically; consequently, current spikes and EMI are minimized. An internal soft-start circuitry prevents excessive current from the supply. The device is internally protected against short-circuit and over-temperature conditions. The FAN5631 has a dual-output voltage feature. When VSEL is high, VOUT is 1.5V; and when VSEL is low, VOUT is 1.2V. The FAN5632 has an efficiency optimizer feature that, when enabled, changes the switch mode configuration from 2:1 to 1:1 at the lower threshold of VIN. The efficiency is maintained at its peak level over a wider range of input voltages. In addition, VOUT varies from 1.2V to 1.5V as a result of this efficiency optimization. If the efficiency optimizer is not enabled, VOUT is regulated to 1.5V. Both the FAN5631 and FAN5632 are available in a 10- lead 3x3mm MLP package. Ordering Information Part Number Package Packing Method FAN5631MPX 10-Lead 3x3mm Molded Leadless Package (MLP) Tape and Reel FAN5632MPX 10-Lead 3x3mm Molded Leadless Package (MLP) Tape and Reel All packages are lead free per JEDEC: J-STD-020B standard. |
类似零件编号 - FAN5632MPX |
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类似说明 - FAN5632MPX |
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