RT9193-31GB Richtek

RT9193 300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator General Description Features zz z zz Ultra Low Noise for RF Application The RT9193 is designed for portable RF and wireless zz z zz Ultra Fast Response in Line/Load Transient applications with demanding performance and space zz z zz Quick Start-Up (Typically 50s) requirements. The RT9193 performance is optimized for zz z zz <0.01A Standby Current When Shutdown battery-powered systems to deliver ultra low noise and zz z zz Low Dropout : 220mV @ 300mA low quiescent current. A noise bypass pin is available for zz z zz Wide Operating Voltage Ranges : 2.5V to 5.5V further reduction of output noise. Regulator ground current zz z zz TTL-Logic-Controlled Shutdown Input increases only slightly in dropout, further prolonging the zz z zz Low Temperature Coefficient battery life. The RT9193 also works with low-ESR ceramic zz z zz Current Limiting Protection capacitors, reducing the amount of board space necessary zz z zz Thermal Shutdown Protection for power applications, critical in hand-held wireless zz z zz Only 1F Output Capacitor Required for Stability devices. The RT9193 consumes less than 0.01A in zz z zz High Power Supply Rejection Ratio shutdown mode and has fast turn-on time less than 50s. zz z zz Custom Voltage Available The other features include ultra low dropout voltage, high zz z zz RoHS Compliant and 100% Lead (Pb)-Free output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SC-70-5, SOT-23-5, Applications TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages. z CDMA/GSM Cellular Handsets z Battery-Powered Equipment Ordering Information z Laptop, Palmtops, Notebook Computers RT9193- Package Type z Hand-Held Instruments U5 : SC-70-5 z PCMCIA Cards B : SOT-23-5 z Portable Information Appliances J5 : TSOT-23-5 QW : WDFN-6L 2x2 (W-Type) F : MSOP-8 Marking Information Lead Plating System For marking information, contact our sales representative P : Pb Free directly or through a Richtek distributor located in your G : Green (Halogen Free and Pb Free) area. Output Voltage 15 : 1.5V 16 : 1.6V Typical Application Circuit : 49 : 4.9V 50 : 5.0V RT9193 1H : 1.85V V VIN VOUT V IN OUT 2H : 2.85V C C IN OUT 4G : 4.75V 1F/X7R 1F/X7R GND (1.5V to 5V with 0.1V step is available) Chip Enable Note : BP EN C BP Richtek products are : 22nF ` RoHS compliant and compatible with the current require- (Option for low noise) ments of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9193-16 January 2013 www.richtek.com 1- RT9193 Pin Configurations (TOP VIEW) VOUT BP NC 8 NC EN 1 6 BP 5 4 VIN 2 7 EN GND 2 5 NC 3 NC 6 BP 7 23 VIN 3 4 VOUT VOUT 4 5 GND VIN GND EN WDFN-6L 2x2 MSOP-8 SC-70-5/SOT-23-5/TSOT-23-5 Functional Pin Description Pin Name Pin Function Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100k EN resistor connected to GND when the control signal is floating. Reference Noise Bypass. This pin can be floating. For lowest noise performance, connect a 22nF BP capacitor between the BP and GND pins. GND Ground. VOUT Output Voltage. VIN Power Input Voltage. Function Block Diagram EN Shutdown VIN Quick and Start Logic Control BP V REF + MOSFET Driver Error VOUT Amplifier Current-Limit and Thermal Protection GND Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9193-16 January 2013 2