RT9054 Datasheet, PDF (1/11 Pages) Richtek Technology Corporation – Portable Power Management 300mA Dual LDO Regulator

®
RT9054
Portable Power Management 300mA Dual LDO Regulator
General Description
Features
The RT9054 is a dual channel, low noise, and low dropout
regulator sourcing up to 300mA at each channel. The range
of output voltage is from 1.2V to 3.6V by operating from
2.5V to 5.5V input.
The RT9054 offers 3% accuracy, extremely low dropout
voltage (240mV @ 300mA), and extremely low ground
current, only 27μA per LDO. The shutdown current is near
zero current which is suitable for battery-power devices.
Other features include current limiting, over temperature
and output short circuit protection.
The RT9054 is short circuit thermal folded back protected.
The IC lowers its OTP trip point from 165°C to 110°C when
output short circuit occurs (V_OUT < 0.4V) providing
maximum safety to end users.
The RT9054 can operate stably with very small ceramic
output capacitors, reducing required board space and
component cost. The RT9054 is available in fixed output
voltages in the WDFN-6L 1.6x1.6 packages.
Ordering Information
RT9054-
Package Type
QW : WDFN-6L 1.6x1.6 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Output Voltage : VOUT1/VOUT2
VOUT2 > VOUT1 is Recommended
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.
z Wide Operating Voltage Ranges : 2.5V to 5.5V
z Low-Noise for RF Application
z No Noise Bypass Capacitor Required
z Fast Response in Line/Load Transient
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
z Dual LDO Outputs (300mA/300mA)
z Ultra-low Quiescent Current 27μA/LDO
z High Output Accuracy 3%
z Short Circuit Protection
z Thermal Shutdown Protection
z Current Limit Protection
z Short Circuit Thermal Folded Back Protection
z Tiny 6-Lead WDFN Packages
z RoHS Compliant and Halogen Free
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
z PCMCIA Cards
z Portable Information Appliances
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Available Voltage Version
Code Voltage Code Voltage Code Voltage
A
3.5
B
1.3
C
1.2
D
1.85
E
2.1
F
1.5
G
1.8
H
2
J
2.5
K
2.6
L
2.7
M
2.8
N
2.85
P
3
Q
3.1
R
3.2
S
3.3
T
2.65
V
2.9
W
1.6
X
3.15
Y
1.9
U
1.4
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9054-03 February 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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