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LM4510SDXNOPB bảng dữ liệu(PDF) 9 Page - Texas Instruments |
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LM4510SDXNOPB bảng dữ liệu(HTML) 9 Page - Texas Instruments |
9 / 23 page LOGIC SYNC/NON- SYNC PWM Ramp AGND CURRENT LIMIT 10 uA SW COMP VIN PGND EN FB S/D OSC UVP SCP Current Sense UVP REF BG BG TSD + - + - + - Feedback Fault Protection RESET SET EAMP REF SS VOUT Q Q R S LM4510 www.ti.com SNVS533C – SEPTEMBER 2007 – REVISED MAY 2013 BLOCK DIAGRAM Figure 23. LM4510 Block Diagram Operation Description LM4510 is a peak current-mode, fixed-frequency PWM boost regulator that employs both Synchronous and Non- Synchronous Switching. The DC/DC regulator regulates the feedback output voltage providing excellent line and load transient response. The operation of the LM4510 can best be understood by referring to the Block Diagram. NON-SYNCHRONOUS OPERATION The device operates in Non-synchronous Mode at light load (IOUT < 10 mA) or when output voltage is lower than 10V (typ.). At light load, LM4510 automatically changes its switching operation from 'Synchronous' to 'Non- Synchronous' depending on VIN and L. Non-Synchronous operation at light load maximizes power efficiency by reducing PMOS driving loss. Copyright © 2007–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: LM4510 |
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