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STR-X6750

Sanken
Part Number STR-X6750
Manufacturer Sanken
Description Off-Line Quasi-Resonant Switching Regulators
Published Feb 5, 2015
Detailed Description Product Information STR-X6700 Series Off-Line Quasi-Resonant Switching Regulators Introduction The STR-X6700 series int...
Datasheet PDF File STR-X6750 PDF File

STR-X6750
STR-X6750

Overview
Product Information STR-X6700 Series Off-Line Quasi-Resonant Switching Regulators Introduction The STR-X6700 series integrates a quasi-resonant control IC and a MOSFET with avalanche guarantee.
In normal operation, the device provides high efficiency and low EMI noise with bottom-skip quasi-resonant operation during light output loads.
Low power consumption is also achieved by Auto-standby mode (not available in the STR-X6729, STR-X6759N, or STR-X6768N) or manual standby mode (external trigger).
The device is supplied in a seven-pin fully-molded TO-3Pstyle package, which is suitable for downsizing and standardizing of an SMPS by reducing external component count and simplifying circuit design.
Features and benefits include the following: ▪ Auto standby mode (burst oscillation) or manual standby mode (UVLO intermittent oscillation) in the standby mode.
▪ In addition to the standard quasi-resonant operation, a bottom-skip mode is available for increased efficiency from light to medium load.
▪ Soft-start operation at start-up.
▪ Reduced switching noise (compared to conventional PWM hard-switching solution) with a step-drive function.
▪ Built-in avalanche-energy-guaranteed power MOSFET (to simplify surge-absorption circuit; no VDSS derating is required).
▪ Overcurrent protection (OCP), overvoltage protection (OVP), overload protection (OLP), and maximum On-time control circuits are incorporated; OVP and OLP go into a latched mode.
The product lineup for the STR-X6700 series provides the options shown in table 1.
Contents Introduction Pin functional descriptions Operation description Transformer parameters General considerations Design considerations Package dimensions, TO-3P Worldwide Contacts 1 2 6 10 11 13 14 19 LF1901 LF1902 LF1905 Figure 1.
STR-X6700 series packages are fully molded TO-3P package types: LF1901 (STR-X6737 and STR-X6769), LF1902 (STR-X6729 and STR-X6768N), and LF1905 (STR-X6757 and STR-X6759N).
Table 1.
Product Line-up Type # STR-X6729b MO...


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