RT9166/A 300/600mA, Ultra-Fast Transient Response LDO Regulator General Description Features Low Quiescent Current (Typically 220A) The RT9166/A series are CMOS low dropout regulators Guaranteed 300/600mA Output Current optimized for ultra-fast transient response. The devices Low Dropout Voltage : 230/580mV at 300/600mA are capable of supplying 300mA or 600mA of output current Wide Operating Voltage Ranges : 3V to 5.5V with a dropout voltage of 230mV or 580mV respectively. Ultra-Fast Transient Response The RT9166/A series are is optimized for CD/DVD-ROM, Tight Load and Line Regulation CD/RW or wireless communication supply applications. Current Limiting Protection The RT9166/A regulators are stable with output capacitors Thermal Shutdown Protection as low as 1F. The other features include ultra low dropout Only Low-ESR Ceramic Capacitor Required for voltage, high output accuracy, current limiting protection, Stability and high ripple rejection ratio. Custom Voltage Available The devices are available in fixed output voltages range of RoHS Compliant and 100% Lead (Pb)-Free 1.2V to 4.5V with 0.1V per step. The RT9166/A regulators are available in 3-lead SOT-23 (RT9166 only), SOT-89, Applications SOT-223, TO-92 and TO-252 packages. CD/DVD-ROM, CD/RW Wireless LAN Card/Keyboard/Mouse Ordering Information Battery-Powered Equipment RT9166/A- XDSL Router Package Type PCMCIA Card VL : SOT-23-3 (L-Type) (RT9166 Only) X : SOT-89 XL : SOT-89 (L-Type) Marking Information G : SOT-223 GL : SOT-223 (L-Type) For marking information, contact our sales representative Z : TO-92 directly or through a Richtek distributor located in your L : TO-252 area. Lead Plating System P : Pb Free Pin Configurations G : Green (Halogen Free and Pb Free) (TOP VIEW) Output Voltage 12 : 1.2V VIN 13 : 1.3V 3 : 45 : 4.5V 2 1B : 1.25V GND VOUT 600mA Output Current SOT-23-3 (L-Type) (RT9166) 300mA Output Current Note : 3 VOUT Richtek products are : 2 GND RoHS compliant and compatible with the current require- 1 VIN ments of IPC/JEDEC J-STD-020. TO-92 Suitable for use in SnPb or Pb-free soldering processes. Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9166/A-24 January 2016 www.richtek.com 1+ RT9166/A 12 3 12 3 1 23 1 23 1 2 3 GND VOUT GND VIN GND VIN VOUT GND VIN VOUT VOUT GND VIN VOUT VIN (TAB) (TAB) (TAB) (TAB) SOT-89 SOT-89 (L-Type) SOT-223 SOT-223 (L-Type) TO-252 Typical Application Circuit RT9166/A V VIN VOUT V IN OUT C C GND OUT IN 1uF 1uF Note: To prevent oscillation, a 1F minimum X7R or X5R dielectric is strongly recommended if ceramics are used as input/output capacitors. When using the Y5V dielectric, the minimum value of the input/output capacitance that can be used for stable over full operating temperature range is 3.3F. (see Application Information Section for further details) Functional Pin Description Pin Name Pin Function VIN Supply Input. VOUT Regulator Output. GND Common Ground. Function Block Diagram VIN VOUT Error Current Amplifier Limiting Sensor - Thermal 1.2V Shutdown Reference GND Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9166/A-24 January 2016 2