RT9064 Ultra Low Power, 14V, 200mA Low-Dropout Linear Regulator General Description Features zz z zz 2A Quiescent Current The RT9064 is a low-dropout (LDO) linear regulator that zz z zz 2% Output Accuracy features high input voltage, low dropout voltage, ultra-low zz z zz 200mA Output Current operating current, and miniaturized packaging. With zz z zz 14V Maximum Operating Input Voltage quiescent current as low as 2A, the RT9064 is ideal for zz z zz Dropout Voltage : 0.4V at 100mA battery-powered equipment. zz z zz Fixed Output Voltage : 2.5V/3.3V/5V The RT9064 s stability requirements are easily met with zz z zz Stable with Ceramic or Tantalum Capacitor all types of output capacitors, including tiny ceramic zz z zz Current Limit Protection capacitors, over its wide input range (3.5V to 14V) and its zz z zz Over-Temperature Protection load current range (0mA to 200mA). The RT9064 offers zz z zz SOT-23-3, SOT-89-3 Packages standard output voltages of 2.5V, 3.3V and 5V. zz z zz RoHS Compliant and Halogen Free Pin Configurations Applications (TOP VIEW) z Portable, Battery Powered Equipment GND z Ultra Low Power Microcontrollers 3 2 Ordering and Marking Information Output Marking VCC VOUT Part Number Package Voltage Information SOT-23-3 RT9064-25GV SOT-23-3 0D= VCC 2.5V RT9064-25GVN SOT-23-3 (N) 30= 3 RT9064-25GX SOT-89-3 04= 2 RT9064-33GV SOT-23-3 0E= 3.3V RT9064-33GVN SOT-23-3 (N) 2Z= GND VOUT RT9064-33GX SOT-89-3 05= SOT-23-3 (N-Type) RT9064-50GV SOT-23-3 0F= 5.0V RT9064-50GVN SOT-23-3 (N) 2Y= RT9064-50GX SOT-89-3 06= 23 VCC GND VOUT SOT-89-3 Simplified Application Circuit RT9064 VCC VOUT V V CC OUT C C IN GND OUT Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9064-00 June 2013 www.richtek.com 1+ RT9064 Functional Pin Description Pin No. Pin Name Pin Function SOT-23-3 SOT-23-3 (N-Type) SOT-89-3 1 3 1 VCC Supply Voltage Input. 2 2 3 VOUT Output of the Regulator. 3 1 2 GND Ground. Function Block Diagram VCC VOUT OCP R1 - OTP GND Bandgap R2 Reference Operation The RT9064 is a high input voltage linear regulator Current Limit specifically designed to minimize external components. The RT9064 provides a current limit function to prevent damage during output over-load or shorted-circuit Output Transistor conditions. The output current is detected by an internal The RT9064 includes a built-in low on-resistance sensing transistor. P-MOSFET output transistor for low dropout voltage applications. Over-Temperature Protection The over-temperature protection function will turn off the Error Amplifier P-MOSFET when the internal junction temperature The Error Amplifier compares the output feedback voltage exceeds 150C (typ.) and the output current exceeds from an internal feedback voltage divider to an internal 30mA. Once the junction temperature cools down by reference voltage and controls the P-MOSFET s gate approximately 20C, the regulator will automatically voltage to maintain output voltage regulation. resume operation. Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9064-00 June 2013 2