RT9183-18GLF Richtek

RT9183 Ultra Low Dropout 1.5A Linear Regulator General Description Features zz z zz 330mV Dropout 1.5A The RT9183 series are high performance linear voltage zz z zz 380A Low Ground Pin Current regulators that provide ultra low-dropout voltage, high zz z zz Excellent Line and Load Regulation output current with low ground current. It operates from zz z zz 0.1A Quiescent Current in Shutdown Mode an input of 2.3V to 5.5V and provides output current up to zz z zz Guaranteed 1.5A Output Current 1.5A thus is suitable to drive digital circuits requiring low zz z zz Fixed Output Voltages : 1.2V to 3.3V voltage at high currents. zz z zz Adjustable Output Voltage from 0.8V to 4.5V The RT9183 has superior regulation over variations in line zz z zz Over-Temperature/Over-Current Protection and load. Also it provides fast respond to step changes in zz z zz RoHS Compliant and 100% Lead (Pb)-Free load. Other features include over-current and over- temperature protection. The adjustable version has enable Ordering Information pin to reduce power consumption in shutdown mode. RT9183 - The devices are available in fixed output voltages of 1.2V Package Type G : SOT-223 to 3.3V with 0.1V per step and as an adjustable device GF : SOT-223 (F-Type) with a 0.8V reference voltage. The RT9183 regulators are S : SOP-8 available in 3-lead SOT-223 and TO-263 packages (fixed L: TO-252 output only for the 3-lead option). Also available are 5- LF : TO-252 (F-Type) M : TO-263 lead TO-263, TO-252 and fused SOP-8 packages with two M5 : TO-263-5 external resistors to set the output voltage ranges from Lead Plating System 0.8V to 4.5V. P : Pb Free G : Green (Halogen Free and Pb Free) Applications Output Voltage z Battery-Powered Equipment Defauit : Adjustable z Mother Board/Graphic Card 12 : 1.2V 13 : 1.3V z Peripheral Cards : z PCMCIA Card 32 : 3.2V 33 : 3.3V Marking Information Only for SOP-8 and TO-263-5 H : Chip Enable High For marking information, contact our sales representative L : Chip Enable Low directly or through a Richtek distributor located in your Note : area. Richtek 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. Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9183-19 February 2012 www.richtek.com 1RT9183 Pin Configurations (TOP VIEW) 1 23 1 23 1 23 1 23 GND VOUT GND VOUT VIN VIN GND VOUT (TAB) (TAB) (TAB) (TAB) VIN VOUT GND VIN SOT-223 SOT-223 (F-Type) TO-252 TO-252 (F-Type) 8 EN GND 2 VIN 7 GND 3 1 23 4 5 VOUT 6 1 23 GND ADJ 4 5 GND SOP-8 ADJ EN VIN VOUT VIN VOUT GND(TAB) GND(TAB) TO-263 TO-263-5 Typical Application Circuit (SOT-223 & TO-263 & TO-252) RT9183 V OUT VIN VOUT V = 3.3V IN 2.5V, 1.5A GND C C IN OUT 10F 10F Figure 1. 3.3V to 2.5V Regulator (SOP-8 & TO-263-5) RT9183 V VIN VOUT V IN OUT R 1 Enable C OUT EN ADJ GND C IN C 10F R 10F 2 0.1F R1 Note: The value of R2 should be less VOUT = 0.8 (1 + )Volts R2 than 80k to maintain regulation. Figure 2. Adjustable Operation Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9183-19 February 2012 2