RT9073A 1A I , 250mA Low-Dropout Linear Regulator Q General Description Features 1A Ground Current at no Load The RT9073A is a low-dropout (LDO) voltage regulators PSRR = 75dB at 1kHz with enable function that operates from 1.2V to 5.5V. It 2% Output Accuracy provides up to 250mA of output current and offers low- 250mA (V 2.3V) Output Current with EN IN power operation in miniaturized packaging. Low (0.1A) Disable Current The features of low quiescent current as low as 1A and 1.2V to 5.5V Operating Input Voltage almost zero disable current is ideal for powering the battery Dropout Voltage : 0.45V (typ.) at 250mA when V OUT equipment to a longer service life. The RT9073A is stable 3V with the ceramic output capacitor over its wide input range Support Fixed Output Voltage 0.9V, 1.05V, 1.2V, 1.5V, from 1.2V to 5.5V and the entire range of output load 1.8V, 1.9V, 2.5V, 2.7V, 2.8V, 2.9V, 3V, 3.3V current (0mA to 250mA). Stable with Ceramic or Tantalum Capacitor Current Limit Protection Ordering Information Over Temperature Protection RT9073A- ZQFN-4L 1x1 (ZDFN-4L 1x1), SC-82 Packages Package Type Available QZ : ZQFN-4L 1x1 (Z-Type) (ZDFN-4L 1x1) Y : SC-82 Applications Lead Plating System Portable, Battery Powered Equipment G : Green (Halogen Free and Pb Free) Ultra Low Power Microcontrollers Output Voltage Notebook Computers 09 : 0.9V 1K : 1.05V Marking Information 12 : 1.2V For marking information, contact our sales representative 15 : 1.5V directly or through a Richtek distributor located in your 18 : 1.8V area. 19 : 1.9V 25 : 2.5V 27 : 2.7V 28 : 2.8V 29 : 2.9V 30 : 3.0V 33 : 3.3V Special Request: Any Voltage Between 0.9V and 3.3V under specific business agreement Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9073A-03 June 2017 www.richtek.com 1RT9073A Pin Configuration (TOP VIEW) VIN VOUT 1 4 VOUT VIN 4 3 SGND 5 2 GND EN 2 3 EN GND ZQFN-4L 1x1 (ZDFN-4L 1x1) SC-82 (SSOT-24) Functional Pin Description Pin No. Pin Name Pin Function ZQFN-4L 1x1 (ZDFN-4L 1x1) SC-82 (SSOT-24) 1 3 VOUT Output of the regulator. 2 2 GND Ground. 3 1 EN Enable control input. 4 4 VIN Supply voltage input. 5 (Exposed Pad) -- SGND Substrate of chip. Leave floating or tie to GND. Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS9073A-03 June 2017 2