RT9198-15GY

RT9198/A 300mA, Low Noise, Ultra-Fast CMOS LDO Regulator General Description Ordering Information RT9198/A- The RT9198/A is designed for portable RF and wireless Package Type applications with demanding performance and space U5 : SC-70-5 requirements. The RT9198/A performance is optimized for U5R : SC-70-5 (R-Type) Y : SC-82 battery-powered systems to deliver ultra low noise and V : SOT-23-3 low quiescent current. Regulator ground current increases B : SOT- 23-5 only slightly in dropout, further prolonging the battery life. BR : SOT- 23-5 (R-Type) The RT9198/A also works with low-ESR ceramic BG : SOT- 23-5 (G-Type) J3 : TSOT- 23-3 capacitors, reducing the amount of board space necessary J5 : TSOT- 23-5 for power applications, critical in hand-held wireless J5R : TSOT- 23-5 (R-Type) devices. The RT9198/A consumes less than 0.01uA in J5G : TSOT- 23-5 (G-Type) shutdown mode and has fast turn-on time less than 50us. F : MSOP-8 QW : WDFN-6L 2x2 (W-Type) The other features include ultra low dropout voltage, high Lead Plating System output accuracy, current limiting protection, and high ripple P : Pb Free rejection ratio. Available in the SOT-23-3, SOT-23-5, G : Green (Halogen Free and Pb Free) TSOT-23-3, TSOT-23-5, SC-70-5, SC-82, MSOP-8 and Output Voltage WDFN-6L 2x2 packages, the RT9198/A also offers a range 15 : 1.5V from 1.5V to 5.0V with 0.1V per step. 16 : 1.6V : 49 : 4.9V Features 50 : 5.0V z z z Low-Noise for RF Application z z 1H : 1.85V z z z Fast Response in Line/Load Transient z z 2H : 2.85V z z z Quick Start-Up (Typically 50us) 4G : 4.75V z z z z z < 0.01uA Standby Current When Shutdown z z Chip Enable Function (Active Low) Chip Enable Function (Active High) z z z Low Dropout : 220mV @ 300mA z z Note : z z z Wide Operating Voltage Ranges : 2.5V to 5.5V z z Richtek products are : z z z TTL-Logic-Controlled Shutdown Input z z ` RoHS compliant and compatible with the current require- z z z Low Temperature Coefficient z z ments of IPC/JEDEC J-STD-020. z z z Current Limiting Protection z z ` Suitable for use in SnPb or Pb-free soldering processes. z z z Thermal Shutdown Protection z z z z z Only 1uF Output Capacitor Required for Stability z z z z z High Power Supply Rejection Ratio Marking Information z z z z z Custom Voltage Available z z For marking information, contact our sales representative z z z RoHS Compliant and 100% Lead (Pb)-Free z z directly or through a Richtek distributor located in your area. Applications z CDMA/GSM Cellular Handsets z Battery-Powered Equipment z Laptop, Palmtops, Notebook Computers z Hand-Held Instruments z PCMCIA Cards z Portable Information Appliances DS9198/A-14 April 2011 www.richtek.com 1GND RT9198/A Pin Configurations (TOP VIEW) VOUT NC VIN VOUT NC VOUT VIN 5 4 5 4 5 4 3 23 23 23 2 VIN GND EN/EN GND VIN GND VOUT EN/EN NC GND EN/EN TSOT-23-5/SOT-23-5/ TSOT-23-5/SOT-23-5/ TSOT-23-5/ TSOT-23-3/ SC-70-5 (R-Type) SC-70-5 SOT-23-5(G-Type) SOT-23-3 VIN VOUT NC 8 EN/EN 4 3 EN/EN 1 6 NC NC 2 7 NC GND 2 5 NC 3 GND 6 NC 2 7 3 4 VIN 4 5 VIN VOUT VOUT GND EN/EN WDFN-6L 2x2 MSOP-8 SC-82 Typical Application Circuit RT9198 V VIN VOUT V OUT IN C IN C OUT 1uF 1uF Chip Enable EN GND On Off RT9198A VIN VOUT V V IN OUT C IN C OUT 1uF 1uF Chip Enable GND EN Off On www.richtek.com DS9198/A-14 April 2011 2