®
RT9032
Programmable Dual Output Linear Regulator
General Description
The RT9032 is a dual channels, low noise and low dropout
voltage regulator souring up to 300mA at each channel.
The output voltage range is from 1.1V to 3.3V by operating
voltage range from 2.5V to 5.5V.
The output voltages of the RT9032 can be programmed by
setting the voltage of P1 and P2. There are 9 different
voltage settings in one chip. User can choose output
voltages easily by setting P1, P2 to VDD, GND or floating.
The RT9032 offers 3% accuracy, low dropout (330mV
@300mA) and extremely low ground current, only 32μA
per LDO. The shutdown current is near to zero current
which is suitable for battery-powered device. Other
features include current limiting, over temperature
protection and output short circuit protection.
The RT9032 can operate stable with very small ceramic
output capacitors, reducing required board space and
component cost. The RT9032 is available in WDFN-8L
2x2 and WQFN-8L 1.6x1.6 (COL) packages.
Features
Wide Operating Voltage Ranges : 2.5V to 5.5V
Dual LDO Output
Pin Programmable Output Voltage
Low-Noise for RF Application
No Noise Bypass Capacitor Required
Fast Response in Line/Load Transient
Low Quiescent Current of 32μA/LDO
μ
3% High Output Accuracy
Current Limiting Protection
Thermal Shutdown Protection
Short Circuit Protection
Tiny WDFN-8L 2x2 and WQFN-8L 1.6x1.6 (COL)
Packages
RoHS Compliant and Halogen Free
Applications
Mobile Phone
Smart Hand-Held Devices
Digital Still Camera
Battery-Powered Equipments
PCMCIA Cards
Ordering Information
RT9032
Package Type
QW : WDFN-8L 2x2 (W-Type)
QWA : WQFN-8L 1.6x1.6 (COL) (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Output Voltage
A : Combination A
B : Combination B
C : Combination C
D : Combination D
J : Combination J
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.
Pin Configurations
(TOP VIEW)
VIN
1
EN1
2
P2
3
P1
4
8
9
7
6
5
VOUT1
VOUT2
GND
EN2
WDFN-8L 2x2
VOUT1
VIN
EN1
EN2
8
GND
1
2
3
4
7
6
5
VOUT2
P2
GND
P1
WQFN-8L 1.6x1.6 (COL)
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9032-03 August 2012
www.richtek.com
1
RT9032
Typical Application Circuit
RT9032
V
IN
C
IN
1µF
VIN
P1
P2
Chip Enable
EN1
EN2
VOUT2
GND
C
OUT2
1µF
V
OUT2
VOUT1
C
OUT1
1µF
V
OUT1
Table for Programmable Output Voltage Setting
Combination A (RT9032A)
P1 State
L
L
L
H
H
H
Open
Open
Open
P2 State
L
H
Open
L
H
Open
L
H
Open
VOUT1
1.5V
1.8V
1.8V
1.8V
1.8V
2.7V
2.8V
2.9V
2.8V
VOUT2
2.8V
2.9V
2.8V
2.7V
2.6V
2.8V
2.8V
2.9V
3.3V
Combination C (RT9032C)
P1 State
L
L
L
H
H
H
Open
Open
Open
P2 State
L
H
Open
L
H
Open
L
H
Open
VOUT1
1.8V
1.8V
1.8V
1.85V
2.6V
2.6V
2.85V
3V
3.3V
VOUT2
2.8V
2.85V
3V
2.85V
2.7V
3.3V
3.3V
3.3V
3.3V
Combination B (RT9032B)
P1 State
L
L
L
H
H
H
Open
Open
Open
P2 State
L
H
Open
L
H
Open
L
H
Open
VOUT1
1.2V
1.5V
1.5V
1.8V
1.8V
2.8V
2.8V
3V
3.3V
VOUT2
2.8V
1.8V
2.8V
2.6V
2.8V
2.8V
3.3V
3.3V
3.3V
Combination D (RT9032D)
P1 State
L
L
L
H
H
H
Open
Open
Open
P2 State
L
H
Open
L
H
Open
L
H
Open
VOUT1
1.8V
2.6V
1.8V
2.9V
2.8V
2.8V
1.8V
1.8V
1.5V
VOUT2
2.9V
2.8V
2.8V
2.9V
3.3V
2.8V
2.6V
2.7V
2.8V
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS9032-03 August 2012
RT9032
Combination J (RT9032J)
P1 State
L
L
L
H
H
H
Open
Open
Open
P2 State
L
H
Open
L
H
Open
L
H
Open
VOUT1
3.3V
1.1V
1.2V
1.8V
1.1V
1.1V
1.2V
1.2V
1.8V
VOUT2
3.3V
3.3V
2.5V
3.3V
1.8V
2.5V
1.8V
3.3V
2.5V
Functional Pin Description
Pin Number
WDFN 2x2
1
2
3
4
5
6,
9 (Exposed Pad)
7
8
WQFN 1.6x1.6 (COL)
1
2
6
4
3
5
7
8
Pin Name
VIN
EN1
P2
P1
EN2
GND
VOUT2
VOUT1
Supply Input.
Channel 1 Enable Control.(Active High)
Programming Input 2. The state of P2 selects one of nine
output voltage options.
Programming Input 1. The state of P1 selects one of nine
output voltage options.
Channel 2 Enable Control.(Active High)
Common Ground. The exposed pad must be soldered to a
large PCB and connected to GND for maximum power
dissipation.
Channel 2 Output Voltage.
Channel 1 Output Voltage.
Pin Function
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9032-03 August 2012
www.richtek.com
3
RT9032
Function Block Diagram
EN1
Shutdown
and
Logic Control
0.1µA
V
REF
-
+
MOS Driver
VOUT1
Current-Limit
and
Thermal Protection
Programmable
Output
P1
P2
VIN
Error
Amplifier
VIN
POR Control
VIN
EN2
Shutdown
and
Logic Control
0.1µA
V
REF
-
+
MOS Driver
Current-Limit
and
Thermal Protection
Error
Amplifier
VOUT2
Programmable
Output
P1
P2
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS9032-03 August 2012
RT9032
Absolute Maximum Ratings
(Note 1)
6.5V
6.5V
0.606W
0.571W
165°C/W
Supply Input Voltage (VIN) ----------------------------------------------------------------------------------------------
I/O Pin Voltage (EN1, EN2, P1, P2, VOUT1, VOUT2) -----------------------------------------------------------
Power Dissipation, P
D
@ T
A
= 25°C
WDFN-8L 2x2 --------------------------------------------------------------------------------------------------------------
WQFN-8L 1.6x1.6 (COL) ------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
WDFN-8L 2x2,
θ
JA
---------------------------------------------------------------------------------------------------------
WDFN-8L 2x2,
θ
JC
--------------------------------------------------------------------------------------------------------- 20°C/W
WQFN-8L 1.6x1.6 (COL),
θ
JA
------------------------------------------------------------------------------------------- 175°C/W
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Storage Temperature Range --------------------------------------------------------------------------------------------
−
65°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions
(Note 4)
Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.5V to 5.5V
Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
Parameter
Quiescent Current
Shutdown Current
Output (VOUT1, VOUT2)
Output Voltage Range
Dropout Voltage
Output Accuracy
Line Regulation
Load Regulation
(Note 6)
V
OUT
(Note5)
(V
IN
= V
OUTX
+ 0.7V, V
ENX
= V
IN
, C
IN
= C
OUT1
= C
OUT2
=1μF, T
A
= 25°C unless otherwise specified.)
Symbol
I
Q
I
SHDN
Test Conditions
V
EN
> 1.5V,
V
EN
< 0.4V
Min
--
--
Typ
65
--
Max
80
1
Unit
μA
μA
1.1
I
OUT
= 300mA
I
OUT
= 1mA
V
IN
= 2.5V to 5.5V
1mA < I
OUT
< 300mA
f = 100Hz, I
LOAD
= 10mA
f = 1kHz, I
LOAD
= 10mA
f = 10kHz, I
LOAD
= 10mA
f = 100Hz, I
LOAD
= 150mA
f = 1kHz, I
LOAD
= 150mA
f = 10kHz, I
LOAD
= 150mA
--
−3
--
--
--
--
--
--
--
--
--
330
--
--
--
65
60
50
65
50
50
3.3
500
+3
0.2
0.6
--
--
--
--
--
--
V
mV
%
%/V
%
dB
V
DROP
ΔV
ΔV
LINE
ΔV
LOAD
Power Supply Rejection Rate PSRR
dB
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9032-03 August 2012
www.richtek.com
5
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