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LX8117-3.3, LX8117-3.3CST, LX8117-33

Table of contents:
Info of LX8117-3.3
Info of LX8117-3.3CST
Info of LX8117-33

LX8117-3.3, LX8117-3.3CST, LX8117-33 Selling Leads, Datasheet

MFG:FAIRCHILD Package Cooled:TO-251-3 D/C:08+

LX8117-3.3, LX8117-3.3CST, LX8117-33 Picture

LX8117-3.3, LX8117-3.3CST, LX8117-33 Datasheet download

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Part Number: LX8117-3.3

MFG: FAIRCHILD

Package Cooled: TO-251-3

D/C: 08+

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LX8117-33 General Description

The LX8117/8117A/8117B series are positive Low Dropout (LDO) regulators. At the designed maximum load current, the LX8117 series dropout voltage is guaranteed to be 1.2V or lower at 0.8A (LX8117A 1.3V @ 1A). The dropout voltage decreases with load current.

An adjustable output voltage version of the LX8117/17A/17B is available, as well as versions with fixed outputs of 2.5V, 2.85V, 3.3V and 5V. The 2.85V version is specifically designed for use as a component of active termination networks for the SCSI bus. On-chip trimming of the internal voltage reference allows specification of the initial output voltage to within ±1% of its nominal value. The output current-limit point is also trimmed, which helps to minimize stress on both the regulator and the system power source when they are operated under short-circuit conditions. The regulator's internal circuitry will operate at input-to-output differential voltages down to 1V.

Most regulator circuit designs include output capacitors with values in the range of tens to hundreds of microfarads or more. The LX8117/17A/17B typically requires at least 10µF of output capacitance for stable operation.

PNP-type regulators can waste current equal to as much as 10 percent of their output as a quiescent current which flows directly to ground, bypassing the load. Quiescent current from the LX8117/17A/ 17B flows through the load, increasing power-use efficiency and allowing cooler ,operation.

The LX8117 is available in low-profile plastic SOT-223 and D-Pak packages for applications where space is at a premium. The LX8117 is also available in a plastic TO-263 package for instances when the thermal resistance from the circuit die to the environment must be minimized.

LX8117-33 Maximum Ratings

Power Dissipation .......................................................Internally Limited Input Voltage
LX8117-00/8117A-00/8117B-00 (Adj.) ....................................................................15V
LX8117-33/8117A-33/8117B-33 (3.3V), LX8117-05/8117A-05/8117B-05 (5.0V) .... 15V
LX8117-25/8117A-25/8117B-25 (2.5V), LX8117-28/8117A-28/8117B-28 (2.85V) .. 12V
Surge Voltage ......................................................................................................... 15V
Operating Junction Temperature
Plastic (ST, DD & DT Packages) .......................................................................... 150°C
Storage Temperature Range ...............................................................-65°C to 150°C
Lead Temperature (Soldering, 10 seconds) ........................................................300°C
Short-Circuit Protection ...................................................................................Indefinite
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal.

LX8117-33 Features

· 0.2% Line Regulation Maximum
· 0.4% Load Regulation Maximum
· Output Current Of 800mA
· Regulates Down To 1.2V Dropout (LX8117) And 1.3V Dropout (LX8117A)
· Operates Down To 1V Dropout
· Space Saving SOT-223 Surface Mount Package
· Guaranteed Dropout Voltage At Multiple Current Levels
· Three-Terminal Adjustable Or Fixed 2.5V, 2.85V, 3.3V & 5V

LX8117-33 Typical Application

·Battery Chargers
·Active SCSI Terminators
·5V To 3.3V Linear Regulators
·High-Efficiency Linear Regulators
·Post Regulators For Switching Supplies

LX8117-33 Connection Diagram

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