RT9030A 300mA, Low Input Voltage, Low Dropout, Low Noise Ultra- Fast Without Bypass Capacitor CMOS LDO Regulator General Description Features Wide Operating Voltage Range : 1.5V to 5.5V The RT9030A is a high-performance, 300mA LDO regulator, Output Voltage Range : 1V to 3.3V offering extremely high PSRR and ultra-low dropout. Ideal Low Dropout : 300mV at 300mA for portable RF and wireless applications with demanding Ultra-Low-Noise for RF Application performance and space requirements. Ultra-Fast Response in Line/Load Transient The RT9030A quiescent current as low as 25A further Current Limiting Protection prolongs the battery life. The RT9030A also works with Thermal Shutdown Protection low ESR ceramic capacitors, reducing the amount of board High Power Supply Rejection Ratio space necessary for power applications, critical in hand- Only 1F Output Capacitor Required for Stability held wireless devices. TTL-Logic-Controlled Shutdown Input The RT9030A consumes typical 0.7A in shutdown mode RoHS Compliant and Halogen Free and has fast turn-on time less than 40s. The other features include ultra-low dropout voltage, high output accuracy, Applications current limiting protection and high ripple rejection ratio. CDMA/GSM Cellular Handsets Portable Information Appliances Laptop, Palmtops, Notebook Computers Ordering Information Hand-Held Instruments RT9030A- Mini PCI & PCI-Express Cards Package Type B : SOT-23-5 PCMCIA & New Cards Lead Plating System G : Green (Halogen Free and Pb Free) Pin Configurations Fixed Output Voltage (TOP VIEW) 10 : 1.0V VOUT NC 11 : 1.1V : 5 4 32 : 3.2V 33 : 3.3V 23 1B : 1.25V VIN GND EN 1H : 1.85V 2H : 2.85V SOT-23-5 1K : 1.05V Note : Marking Information Richtek products are : RoHS compliant and compatible with the current require- For marking information, contact our sales representative ments of IPC/JEDEC J-STD-020. directly or through a Richtek distributor located in your Suitable for use in SnPb or Pb-free soldering processes. area. Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9030A-01 October 2012 www.richtek.com 1RT9030A Typical Application Circuit 1 5 VIN VOUT V V IN OUT C C IN OUT 1F/X7R 1F/X7R RT9030A 3 4 Chip Enable EN NC GND 2 Functional Pin Description Pin No. Pin Name Pin Function 1 VIN Supply Input. 2 GND Ground. Enable Input Logic, Active High. When the EN pin is open, it will be pulled low 3 EN internally. 4 NC No Internal Connection. 5 VOUT Regulator Output. Function Block Diagram POR Current EN OTP Limit VIN V REF - 1A MOS Driver + VOUT GND Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9030A-01 October 2012 2