<p>双路同步降压型控制器，具有Out-of Audioâ - ?? ¢操作和100mA LDO的用于笔记本系统电源 讯享网
Dual-Synchronous, Step-Down Controller with Out-of-Audio⢠Operation and 100-mA LDOs for Notebook System Power
讯享网 <p>DESCRIPON</p><p>The TPS51125A is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter’s efficiency.</p><p>FEATURES</p><p>• Wide Input Voltage Range: 5.5 V to 28 V</p><p>• Output Voltage Range: 2 V to 5.5 V</p><p>• Built-in 100-mA 5-V/3.3-V LDO with Switches</p><p>• Built-in 1% 2-V Reference Output</p><p>• With/Without Out-of-Audio™ Mode Selectable</p><p>Light Load and PWM only Operation</p><p>• Internal 1.6-ms Voltage Servo Softstart</p><p>• Adaptive On-Time Control Architecture with</p><p>Four Selectable Frequency Setting</p><p>• 4500 ppm/°C R</p><p>DS(on)</p><p>Current Sensing</p><p>• Built-In Output Discharge</p><p>• Power Good Output</p><p>• Built-in OVP/UVP/OCP</p><p>• Thermal Shutdown (Non-latch)</p><p>• QFN24 (RGE)</p>
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