L6743_08 STMICROELECTRONICS [STMicroelectronics], L6743_08 Datasheet
L6743_08
Related parts for L6743_08
L6743_08 Summary of contents
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Features ■ Dual MOSFET driver for synchronous rectified converters ■ High driving current for fast external MOSFET switching ■ Integrated bootstrap diode ■ High frequency operation ■ Enable pin ■ Adaptive dead-time management ■ Flexible gate-drive ...
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Contents Contents 1 Typical application circuit and block diagram . . . . . . . . . . . . . . . . . . . . 3 1.1 Application circuit . . . . . . . ...
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L6743, L6743Q 1 Typical application circuit and block diagram 1.1 Application circuit Figure 1. Typical application circuit 12V CC C PWM Input EN Input L6743 Reference Schematic 1.2 Block diagram Figure 2. Block diagram VCC EN ...
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Pin description and connection diagrams 2 Pin description and connection diagrams Figure 3. Pin connection (top view) BOOT PWM EN VCC 2.1 Pin description Table 2. Pin description Pin n Name DFN10 SO-8 High-side driver supply. This pin supplies the ...
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L6743, L6743Q 3 Thermal data Table 3. Thermal data Symbol Thermal resistance junction to ambient R thJA (Device soldered on 2s2p board) R Thermal resistance junction to case thJC T Maximum junction temperature MAX T ...
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Electrical specifications 4.2 Electrical characteristics Table 5. Electrical characteristics ( V± Symbol Parameter Supply current and power-ON I VCC supply current CC I BOOT supply current BOOT VCC turn-ON UVLO VCC VCC turn-OFF PWM and ...
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L6743, L6743Q 5 Device description and operation L6743, L6743Q provides high-current driving control for both high-side and low-side N-channel MOSFETS connected as step-down DC-DC Converter driven by an external PWM signal. The integrated high-current drivers allow using different types of ...
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Device description and operation 5.1 High-impedance (HiZ) management The driver is able to manage high-impedance state by keeping all MOSFETs in off state in two different ways. ● If the EN signal is pulled low, the device will keep all ...
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L6743, L6743Q 5.3 Internal BOOT diode L6743, L6743Q embeds a boot diode to supply the high-side driver saving the use of an external component. Simply connecting an external capacitor between BOOT and PHASE complete the high-side supply connections. To prevent ...
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Device description and operation When designing an application based on L6743, L6743Q it is recommended to take into consideration the effect of external gate resistors on the power dissipated by the driver. External gate resistors helps the device to dissipate ...
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L6743, L6743Q 5.5 Layout guidelines L6743, L6743Q provides driving capability to implement high-current step-down DC-DC converters. The first priority when placing components for these applications has to be reserved to the power section, minimizing the length of each connection and ...
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Device description and operation Figure 8. External components placement example BOOT PWM EN VCC 12/17 Rboot Cboot UGATE PHASE 3 6 GND L6743 4 5 LGATE L6743, L6743Q Rboot Cboot BOOT UGATE 1 10 PWM PHASE ...
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L6743, L6743Q 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on ...
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Package mechanical data Table 6. SO-8 mechanical data Dim ( ddd 1. Dimensions D does not include mold flash, protru-sions or gate burrs. Mold flash, potrusions or gate ...
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L6743, L6743Q Table 7. DFN10 mechanical data Dim Figure 10. Package dimensions mm Min Typ Max 0.80 0.90 1.00 0.02 0.05 0.70 0.20 0.18 0.23 0.30 3.00 ...
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Revision history 7 Revision history Table 8. Document revision history Date 20-Aug-2007 05-Jun-2008 16/17 Revision 1 Initial release 2 Updated: Table 6 on page 15 L6743, L6743Q Changes ...
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L6743, L6743Q Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein ...