RT9078
2A I , 300mA Low-Dropout Linear Regulator
Q
General Description Features
2A Ground Current at no Load
The RT9078 is a low-dropout (LDO) voltage regulators with
PSRR = 75dB at 1kHz
enable function that operates from 1.2V to 5.5V. It provides
Adjustable Output Voltage Available by Specific
up to 300mA of output current and offers low-power
Application
operation in miniaturized packaging.
2% Output Accuracy
The features of low quiescent current as low as 2A and
300mA (V 1.7V) Output Current with EN
IN
almost zero disable current is ideal for powering the battery
Low (0.1A) Disable Current
equipment to a longer service life. The RT9078 is stable
1.2V to 5.5V Operating Input Voltage
with the ceramic output capacitor over its wide input range
Dropout Voltage : 0.15V at 300mA when V 3V
OUT
from 1.2V to 5.5V and the entire range of output load
Support Fixed Output Voltage 0.8V, 1.0V, 1.05V, 1.1V,
current (0mA to 300mA).
1.2V, 1.25V, 1.3V, 1.5V, 1.8V, 1.85V, 2.5V, 2.8V, 2.85V,
3V, 3.1V, 3.3V
Ordering Information
Stable with Ceramic or Tantalum Capacitor
RT9078/N-
Package Type Current Limit Protection
J5 : TSOT-23-5
Over Temperature Protection
QZ : ZQFN-4L 1x1 (Z-Type)
TSOT-23-5 and ZQFN-4L 1x1 (ZDFN-4L 1x1) Packages
(ZDFN-4L 1x1)
Available
Lead Plating System
G : Green (Halogen Free and Pb Free)
Output Voltage Applications
08 : 0.8V
Portable, Battery Powered Equipment
:
Ultra Low Power Microcontrollers
33 : 3.3V
Notebook computers
1B : 1.25V
1H : 1.85V
2H : 2.85V
Marking Information
1K : 1.05V
For marking information, contact our sales representative
Special Request : Any voltage between
directly or through a Richtek distributor located in your
0.8V and 3.3V under specific business
area.
agreement
Pin Function
RT9078 : Without SNS Pin
RT9078N : With SNS Pin
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.
DS9078-05 September 2016 www.richtek.com
1RT9078
Pin Configuration
(TOP VIEW)
VOUT SNS/NC
1 4
VOUT VIN
5 4
SGND
23
5
GND 2 EN
3
VIN GND EN
TSOT-23-5 ZQFN-4L 1x1 (ZDFN-4L 1x1)
Functional Pin Description
Pin No.
Pin Name Pin Function
TSOT-23-5 ZQFN-4L 1x1 (ZDFN-4L 1x1)
1 4 VIN Supply voltage input.
2 2 GND Ground.
3 3 EN Enable control input.
SNS Output voltage sense. (RT9078N only)
4 --
NC No internal connection.
5 1 VOUT Output of the regulator.
-- 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 DS9078-05 September 2016
2