AZ1117R-2.85TRE1中文资料

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Data Sheet

CURRENT MODE PWM CONTROLLER AZ2842/3/4/5General Description

The AZ1117 is a series of low dropout three-terminalregulators with a dropout of 1.15V at 1A output cur-rent.

The AZ1117 series provides current limiting and ther-mal shutdown. Its circuit includes a trimmed bandgapreference to assure output voltage accuracy to bewithin 1% for 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, 5.0V andadjustable versions or 2% for 1.2V version. Currentlimit is trimmed to ensure specified output current andcontrolled short-circuit current. On-chip thermal shut-down provides protection against any combination ofoverload and ambient temperature that would createexcessive junction temperature.

The AZ1117 has an adjustable version, that can pro-vide the output voltage from 1.25V to 12V with only 2external resistors.

The AZ1117 series is available in the industry standardSOT-223, SOT-89-3, TO-220-3, TO-252-2 and TO-263-3 power packages.

Features

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Low Dropout Voltage: 1.15V at 1A Output Cur-rent

Trimmed Current LimitOn-chip Thermal Shutdown

Three-terminal Adjustable or Fixed 1.2V, 1.5V,1.8V, 2.5V, 2.85V, 3.3V, 5.0V

Operation Junction Temperature: -40 to 125oC

Applications

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PC MotherboardLCD MonitorGraphic Card

DVD-video Player

NIC/Switch

Telecom EquipmentADSL Modem

Printer and other Peripheral Equipment

SOT-223SOT-89-3 TO-220-3

TO-252-2 TO-263-3

Figure 1. Package Types of AZ1117

Oct. 2005 Rev. 1. 7

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BCD Semiconductor Manufacturing Limited