FEATURES
Dropout Voltage at 800mA Output Current. Fast Transient Response. Line Regulation typically at 0.015%. Load Regulation typically at 0.1%. Current Limiting and Thermal Protection. Adjustable Output Voltage or Fixed 3.3V, 5V. Standard 3-Pin Power Packages.
DESCRIPTION
The is a low dropout three terminal regulator with 800mA output current capability. The output voltage is adjustable with the use of a resistor divider. For fixed output voltage versions, the output voltage is internally set or 5V. Dropout voltage is guaranteed at a maximum 1.3 V with the maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Current limiting and thermal protection provide protection against any overload condition that would create excessive junction temperatures.
APPLICATIONS
SCSI-2 Active Terminator. Post Regulator for Switching Supply. Battery Chargers. Constant-Current Regulators. PC Add-On Card.
VREF=VOUT - VADJ=1.25V (typ.) VOUT=VREF x (1+RF2/RF1)+ IADJ RF2 IADJ=55µA (typ.) (1) C1 needed if device is far away from filter capacitors. (2) C2 required for stability.
4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
PACKING TYPE TR: TAPE & REEL TB: TUBE BG: BAG (for SOT-223) PACKAGING TYPE Y: SOT-223 OUTPUT VOLTAGE DEFAULT: ADJUSTABLE 50: 5.0V PIN CONFIGURATION
Example: AIC1117-25CETR 2.5V version in TO-252 Package & Taping & Reel Packing Type
VIN pin to ADJ/ GND pin........................................................................................... 7V Operating Junction Temperature Range Storage Temperature Range................................................. /W SOT-223 Thermal Resistance Junction to Ambient TO-252.....................................15°C /W................................... 100°C/W..................................... 60°C /W..................................... TO-263.........................................3°C /W (Assume no ambient airflow, no heatsink) TO-263 TO-220 Lead Temperature (Soldering) 10 sec............................................................ ~ 150°C
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