RT9073A
®
DS9073A-03 June 2017 www.richtek.com
1
©
Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
1
μμ
μμ
μA I
Q
, 250mA Low-Dropout Linear Regulator
Applications
Portable, Battery Powered Equipment
Ultra Low Power Microcontrollers
Notebook Computers
General Description
The RT9073A is a low-dropout (LDO) voltage regulators
with enable function that operates from 1.2V to 5.5V. It
provides up to 250mA of output current and offers low-
power operation in miniaturized packaging.
The features of low quiescent current as low as 1μA and
almost zero disable current is ideal for powering the battery
equipment to a longer service life. The RT9073A is stable
with the ceramic output capacitor over its wide input range
from 1.2V to 5.5V and the entire range of output load
current (0mA to 250mA).
Features
1
μμ
μμ
μA Ground Current at no Load
PSRR = 75dB at 1kHz
±±
±±
±2% Output Accuracy
250mA (V
IN
≥≥
≥≥
≥ 2.3V) Output Current with EN
Low (0.1
μμ
μμ
μA) Disable Current
1.2V to 5.5V Operating Input Voltage
Dropout Voltage : 0.45V (typ.) at 250mA when V
OUT
≥≥
≥≥
≥ 3V
Support Fixed Output Voltage 0.9V, 1.05V, 1.2V, 1.5V,
1.8V, 1.9V, 2.5V, 2.7V, 2.8V, 2.9V, 3V, 3.3V
Stable with Ceramic or Tantalum Capacitor
Current Limit Protection
Over Temperature Protection
ZQFN-4L 1x1 (ZDFN-4L 1x1), SC-82 Packages
Available
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Ordering Information
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.
Package Type
QZ : ZQFN-4L 1x1 (Z-Type)
(ZDFN-4L 1x1)
Y : SC-82
RT9073A-
Lead Plating System
G : Green (Halogen Free and Pb Free)
Output Voltage
09 : 0.9V
1K : 1.05V
12 : 1.2V
15 : 1.5V
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
