RT9012_11 Datasheet, PDF (1/11 Pages) Richtek Technology Corporation – 300mA Dual LDO Regulator with POR

RT9012
300mA Dual LDO Regulator with POR
General Description
RT9012 is a dual channel, low noise, and low dropout with
the sourcing ability up to 300mA and power-on reset
function. The range of output voltage is from 1.2V to 3.6V
by operating from 2.5V to 5.5V input.
The RT9012 offers 2% accuracy, extremely low dropout
voltage (240mV @ 300mA), and extremely low ground
current, only 27uA per LDO. The shutdown current is near
zero current which is suitable for battery-power devices.
Other features include current limiting, over temperature,
output short circuit protection.
The RT9012 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 (VOUT < 0.4V) providing
maximum safety to end users.
The RT9012 can operate stably with very small ceramic
output capacitors, reducing required board space and
component cost. The RT9012 is available in fixed output
voltages in the WDFN-8L 2x2 package.
Ordering Information
RT9012-
Package Type
QW : WDFN-8L 2x2 (W-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage : VOUT1/VOUT2
VOUT2 > VOUT1 is Recommended
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.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
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 27uA/LDO
z High Output Accuracy 2%
z Short Circuit Protection
z Thermal Shutdown Protection
z Current Limit Protection
z Short Circuit Thermal Folded Back Protection
z Tiny 8-Lead WDFN Package
z RoHS Compliant and 100% Lead (Pb)-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
Pin Configurations
(TOP VIEW)
VIN 1
EN1 2
EN2 3
SET 4
8 VOUT1
7 VOUT2
6 POR
9 _{5 GND}
WDFN-8L 2x2
Available Voltage Version
Code
A
D
G
K
N
R
V
Y
Voltage
3.5
1.85
1.8
2.6
2.85
3.2
2.9
1.9
Code
B
E
H
L
P
S
W
Voltage
1.3
2.1
2
2.7
3
3.3
1.6
Code
C
F
J
M
Q
T
X
Voltage
1.2
1.5
2.5
2.8
3.1
2.65
3.15
DS9012-09 April 2011
www.richtek.com
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