Preliminary
RT9012
300mA Dual LDO Regulator with POR
General Description
Features
z Wide Operating Voltage Ranges : 2.5V to 5.5V
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.
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
RT9012 offers 2% 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, output
short circuit protection.
z Dual LDO Outputs (300mA/300mA)
z Ultra-low Quiescent Current 27μA/LDO
z High Output Accuracy 2%
z Short Circuit Protection
z Thermal Shutdown Protection
RT9012 is short circuit thermal folded back protected.
RT9012 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.
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
RT9012 can operate stably with very small ceramic output
capacitors, reducing required board space and component
cost. RT9012 is available in fixed output voltages in the
WDFN-8L 2x2 package.
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
Ordering Information
RT9012-
z PCMCIA Cards
Package Type
QW : WDFN-8L 2x2 (W-Type)
z Portable InformationAppliances
Pin Configurations
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
(TOP VIEW)
1
2
3
4
8
VOUT1
VOUT2
POR
VIN
EN1
EN2
SET
7
6
5
Output Voltage : VOUT1/VOUT2
CM : 1.20V/2.80V, FM : 1.50V/2.80V
FS : 1.50V/3.30V, GK : 1.80V/2.60V
GM : 1.80V/2.80V, GP : 1.80V/3.00V
GS : 1.80V/3.30V, JG : 2.50V/1.80V
JM : 2.50V/2.80V, JP : 2.50V/3.00V
JS : 2.50V/3.30V, JN : 2.50V/2.85V
MG : 2.80V/1.80V, MM : 2.80V/2.80V
NN : 2.85V/2.85V, PP : 3.00V/3.00V
9
GND
WDFN-8L 2x2
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area, otherwise visit our website for detail.
Note :
Richtek Pb-free and Green 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.
`100% matte tin (Sn) plating.
DS9012-06 August 2007
www.richtek.com
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