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 : 0.5V at 250mA when V 3V
OUT
equipment to a longer service life. The RT9073A is stable
Support Fixed Output Voltage 0.9V, 1.05V, 1.2V, 1.5V,
with the ceramic output capacitor over its wide input range
1.8V, 1.9V, 2.5V, 2.7V, 2.8V, 2.9V, 3V, 3.3V
from 1.2V to 5.5V and the entire range of output load
Stable with Ceramic or Tantalum Capacitor
current (0mA to 250mA).
Current Limit Protection
Over Temperature Protection
Ordering Information
ZQFN-4L 1x1 (ZDFN-4L 1x1), SC-82 Packages
RT9073A-
Available
Package Type
QZ : ZQFN-4L 1x1 (Z-Type)
Applications
(ZDFN-4L 1x1)
Y : SC-82
Portable, Battery Powered Equipment
Lead Plating System
Ultra Low Power Microcontrollers
G : Green (Halogen Free and Pb Free)
Notebook computers
Output Voltage
09 : 0.9V
Marking Information
1K : 1.05V
For marking information, contact our sales representative
12 : 1.2V
directly or through a Richtek distributor located in your
15 : 1.5V
area.
18 : 1.8V
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 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
DS9073A-02 August 2016 www.richtek.com
1RT9073A
Pin Configurations
(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 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
www.richtek.com DS9073A-02 August 2016
2