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RT9181-18GB Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9181-18GB Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 10 page  RT9181 1 DS9181-14 March 2007 www.richtek.com Features Low Dropout Voltage Regulator Up to 150mA Output Current Power Good (PGOOD) Function Chip Enable/Shutdown Function Load Independent, Low Quiescent Current, 160 μμμμμA Current Limiting and Thermal Protection Under Voltage Lockout (UVLO) Low Variation Due to Load and Line Regulation Output Stable with Low ESR Capacitors SOT-23-5 Package RoHS Compliant and 100% Lead (Pb)-Free Pin Configurations Applications Processor Power-Up Sequencing Laptop, Notebook, and Palmtop Computers 150mA LDO Regulator with PGOOD Ordering Information General Description The RT9181 is a low dropout voltage regulator with an output 2% accuracy and supply a continuous 150mA current within operating range from a +3V to +5.5V input. The power good function monitors the output voltage and indicates by pulling low the power good output (open drain). The RT9181 requires a small output capacitor with low ESR for stabilizing output voltage. The device also minimizes output overshoot during power up. The RT9181 uses an internal PMOS as the pass device, which consumes 160 μA supply current independent of load and dropout conditions. The EN pin controls the output and consumes no input bias current. Other features include current limiting, over temperature protection, and under voltage lockout. (TOP VIEW) SOT-23-5 Marking Information For marking information, contact our sales representative directly or through a RichTek distributor located in your area, otherwise visit our website for detail. Typical Application Circuit VIN GND EN PGOOD VOUT 2 3 5 4 1 VIN EN PGOOD C IN 1uF V IN PGOOD GND VOUT C OUT 1uF V OUT 10K Chip Enable 2 35 4 1 Note : RichTek Pb-free and Green products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100% matte tin (Sn) plating. RT9181- Package Type B : SOT-23-5 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) Output Voltage Default : 1.2V 18 : 1.8V |
Similar Part No. - RT9181-18GB |
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Similar Description - RT9181-18GB |
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