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LM5175RHFT データシート(PDF) 1 Page - Texas Instruments |
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LM5175RHFT データシート(HTML) 1 Page - Texas Instruments |
1 / 38 page RT/SYNC VIN BOOT1 EN/UVLO VOUT AGND CSG SS CS PGND VOSNS HDRV1 SW1 COMP LM5175 LDRV1 LDRV2 HDRV2 BOOT2 SW2 Enable VCC VCC VCC SLOPE PGOOD Power Good Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM5175 SNVSA37A – OCTOBER 2015 – REVISED MAY 2016 LM5175 42 V Wide VIN Synchronous 4-Switch Buck-Boost Controller 1 1 Features 1 • Single Inductor Buck-Boost Controller for Step- Up/Step-Down DC/DC Conversion • Wide VIN Range: 3.5 V to 42 V, 60 V Maximum • Flexible VOUT Range: 0.8 V to 55 V • VOUT Short Protection • High Efficiency Buck-Boost Transition • Adjustable Switching Frequency • Optional Frequency Sync and Dithering • Integrated 2-A MOSFET Gate Drivers • Cycle-by-Cycle Current Limit and Optional Hiccup • Optional Input or Output Average Current Limiting • Programmable Input UVLO and Soft-Start • Power Good and Output Overvoltage Protection • Selectable CCM or DCM with Pulse Skipping • Available in HTSSOP-28 and QFN-28 Packages 2 Applications • Automotive Start-Stop Systems • Backup Battery and Supercapacitor Charging • Industrial PC Power Supplies • USB Power Delivery • LED Lighting 3 Description The LM5175 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175 operates over a wide input voltage range of 3.5 V to 42 V (60 V maximum) to support a variety of applications. The LM5175 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal. The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5175 features selectable Continuous Conduction Mode (CCM) or Discontinuous Conduction Mode (DCM) operation, optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions. Device Information ORDER NUMBER PACKAGE BODY SIZE LM5175PWP HTSSOP-28 9.7 mm x 4.4 mm LM5175RHF QFN-28 4.0 mm x 5.0 mm 4 Simplified Schematic |
同様の部品番号 - LM5175RHFT |
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同様の説明 - LM5175RHFT |
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