LT1176CN8#PBF

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LT1176CN8#PBF is a kind of DC DC switching regulator, which provides a simple, fast and cost effective power solution. LT1176CN8#PBF operates from 7 volts minimum input to 40 volts maximum input, and provides adjustable 0.6V to 5.2V maximum output voltage with ±3% of accuracy. It has the lowest Quiescent Current of 3mA in active mode at full load and no load, very low shutdown current of 0.1μA so it is efficient to use in various applications.

Applications

The LT1176CN8#PBF is used in a wide range of applications, some of which are:

• Blade Server or Storage Server mainly for supplying Gigabit Ethernet, SCSI or Serial ATA interface.
• Telephony and Networking equipments.
• Microcontroller or digitial signal processor power supplies.
• Computer peripherals power supplies.
• Battery-powered equipment.
• Small/Medium-sized state machines power supplies.
• High Reliability applications.

Operation Working Principle

The LT1176CN8#PBF is designed to accept an input voltage from 3V to 40 V, therefore the switching regulators can accurately regulate the output voltage by switch on-off primary side MOSFET. When the feedback voltage increases, reach the regulated voltage, the IN pin will switch off the primary MOSFET. Thereafter, the transformer provides a high degree of isolation between the output and input sides and also steps down the voltage. If the feedback voltage decreases, IN pin will switch on the primary MOSFET. This process will continue as long as the voltage on the FB pin is greater than the regulated voltage.

LT1176CN8#PBF utilizes a high switching frequency of 540 kHz, which allows for much smaller transformer size. The fixed-frequency current-mode control makes the devices very simple to use and gives excellent output voltage regulation. The external current sensing and current limit can be incorporated to the device to overcome the varying load situation.

TSOP-5 Package

The LT1176CN8#PBF is housed in a TSOP-5 package, which has ultra miniature footprint and low profile of 1.2mm. Furthermore, the 26-pin package of LT1176CN8#PBF also has integrated thermal protection as well as ESD protection. Despite its small size, this device offers open-drain, internal POR and a unique controlled output turn-off feature. It also offers users flexible same-sized inductors and integrated output rectifiers for high efficiency.

Conclusion

The LT1176CN8#PBF DC-DC switching regulator is designed for a wide range of applications that require a robust, efficient, and cost-effective power supply solution. It offers a wide range of operational input voltage from 7V minimum to 40V maximum, and with a maximum output voltage level of 5.2V and high switching frequency of 540 kHz. Besides, its TSOP-5 package provides users small footprint, low profile and excellent ESD protection for improved reliability. Therefore, the LT1176CN8#PBF is a good choice for various industrial applications.

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