Richtek RT9011-BJGJ6, RT9011-BMPJ6, RT9011-BMPQW, RT9011-CBGJ6, RT9011-CCPJ6 Schematic [ru]
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RT9011
Portable Power Management 300mA Dual LDO Regulator
General Description
The RT9011 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 RT9011 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.
The RT9011 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 RT9011 can operate stably with very small ceramic
output capacitors, reducing required board space and
component cost. The RT9011 is available in fixed output
voltages in the TSOT-23-6, WDFN-8L 2x2, WDFN-10L 3x3,
WDFN-8L 3x3 and WDFN-6L 1.6x1.6 packages.
Ordering Information
RT9011-
Package Type
J6 : TSOT-23-6
QW : WDFN-8L 2x2 (W-Type)
QWA : WDFN-10L 3x3 (W-Type)
QWB : WDFN-8L 3x3 (W-Type)
QWC : WDFN-6L 1.6x1.6 (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.
Features
z Wide Operating Voltage Ranges : 2.5V to 5.5V
z Low-Noise for RF Application
z No Noise Bypass Capa citor Required
z Fast Response in Line/Load Transient
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
zz
z Dual LDO Outputs (300mA/300mA)
zz
zz
z Ultra-low Quiescent Current 27
zz
zz
z High Output Accuracy 2%
zz
zz
z Short Circuit Protection
zz
zz
z Thermal Shutdown Protection
zz
zz
z Current Limit Protection
zz
zz
z Short Circuit Thermal Folded Back Protection
zz
zz
z Tiny TSOT-23-6 and 6-Lead/8-Lead/10-Lead WDFN
zz
μμ
μA/LDO
μμ
Packages
zz
z RoHS Compliant and 100% Lead (Pb)-Free
zz
Applications
zz
z CDMA/GSM Cellular Handsets
zz
zz
z Battery-Powered Equipment
zz
zz
z Laptop, Palmtops, Notebook Computers
zz
zz
z Hand-Held Instruments
zz
zz
z PCMCIA Cards
zz
zz
z Portable Information Appliances
zz
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
DS9011-08 April 2011 www.richtek.com
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RT9011
Pin Configurations
VIN EN1VOUT1
(TOP VIEW)
4
56
23
VIN
EN1
EN2
NC
1
2
3
4
GND
8
VOUT1
7
VOUT2
6
NC
9
5
GND
GND EN2VOUT2
TSOT-23-6
WDFN-8L 2x2
Typical Application Circuit
V
IN
C
1uF
IN
Chip Enable
Functional Pin Description
Pin No.
TSOT-23-6
WDFN-8L
2x2
WDFN-10L
3x3
WDFN-8L
3x3
1
VIN
2
EN1
EN2
NC
NC
GND
3
4
5
WDFN-10L 3x3
VIN
EN1
EN2
WDFN-6L
1.6x1.6
10
VOUT1
9
VOUT2
8
NC
7
NC
9
11
GND
VIN
EN1
EN2
NC
1
2
3
4
GND
8
VOUT1
7
NC
6
GND
9
5
VOUT2
WDFN-8L 3x3
RT9011
GND
VOUT1
VOUT2
C
1uF
C
1uF
OUT1
OUT2
V
V
OUT1
OUT2
Pin Name Pin Function
VIN
EN2
1
2
3
GND
6
5
7
4
WDFN-6L 1.6x1.6
VOUT1
VOUT2EN1
GND
5 1 1 1 1 VIN Supply Input.
4 2 2 2 2 EN1 Chip Enab le1 (Active High).
3 3 3 3 3 EN2 Chip Enab le2 (Active High).
5,
2
Exposed
Pad (9)
6,
Exposed
Pad (11)
6,
Exposed
Pad (9)
4,
Expo sed
Pad (7)
GND
Common Ground. Th e exposed pad must be
soldered to a large PCB and connected to
GND for maximum power dissipation.
1 7 9 5 5 VOUT2 Channel 2 Out put Voltage.
6 8 10 8 6 VOUT1 Channel 1 Out put Voltage .
-- 4, 6 4, 5, 7, 8 4, 7 -- NC No Interna l Co nnection.
DS9011-08 April 2011www.richtek.com
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Function Block Diagram
RT9011
EN1
EN2
0.2uA
0.2uA
Shutdown
and
Logic Control
V
REF
-
+
Error
Amplifier
Shutdown
Logic Control
V
REF
-
+
Error
Amplifier
MOS Driver
Current-Limit
and
Thermal
Protection
and
MOS Driver
Current-Limit
and
Thermal
Protection
VIN
VOUT1
GND
VOUT2
GND
DS9011-08 April 2011 www.richtek.com
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RT9011
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage ------------------------------------------------------------------------------------------------------ −0.3V to 7V
z Other I/O Pin Voltages --------------------------------------------------------------------------------------------------- −0.3V to 7V
z Power Dissipation, P
TSOT-23-6------------------------------------------------------------------------------------------------------------------- 0.455W
WDFN-8L 2x2 -------------------------------------------------------------------------------------------------------------- 0.606W
WDFN-10L 3x3 ------------------------------------------------------------------------------------------------------------- 0.926W
WDFN-8L 3x3 -------------------------------------------------------------------------------------------------------------- 0.926W
WDFN-6L 1.6x1.6 --------------------------------------------------------------------------------------------------------- 0.571W
z Package Thermal Resistance (Note 2)
TSOT-23-6, θJA------------------------------------------------------------------------------------------------------------- 220°C/W
WDFN-8L 2x2, θJA--------------------------------------------------------------------------------------------------------- 165°C/W
WDFN-10L 3x3, θJA------------------------------------------------------------------------------------------------------- 108°C/W
WDFN-8L 3x3, θJA--------------------------------------------------------------------------------------------------------- 108°C/W
WDFN-6L 1.6x1.6, θJA---------------------------------------------------------------------------------------------------- 175°C/W
z Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
@ T
D
= 25°C
A
Recommended Operating Conditions (Note 4)
z Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.5V to 5.5V
z Enable Input Voltage ------------------------------------------------------------------------------------------------------ 0V to 5.5V
z Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(V
= V
OUT
+ 1V, V
IN
Parameter Symbol Test Conditions Min Typ Max Unit
Input Voltage
Dropout Voltage (Note 5)
Output voltage range
V
Accuracy ΔV I
OUT
Line Regulation
Load Regulation
Current Limit
Quiescent Current
Shutdown Current
EN Threshold
4
= VIN, C
EN
= C
IN
= 1μF, TA = −40°C to 85°C, unless otherwise specified.)
OUT
= 2.5V to 5.5V
V
IN
I
V
DROP
V
OUT
ΔV
LINE
ΔV
LOA D
I
VEN > 1.5V
Q
I
VEN < 0.4V
Q_SD
VIH V
V
V
IL
= 300mA
OU T
1.2 -- 3.6 V
= 1mA to 300mA −3
OU T
= (V
V
IN
> 2.5V, whichever is larger
V
IN
1mA < I
R
= 1Ω
LOA D
= 2.5V to 5.5V, Power On
IN
= 2.5V to 5.5V, Shutdown
IN
+ 0.3V) to 5.5V or
OUT
< 300mA
OU T
2.5 -- 5.5 V
-- 240 330 mV
-- +3 %
-- -- 0.2 %/V
-- -- 0.6 %
330 450 700 mA
-- 58 80 μA
-- -- 1
μA
1.5 -- -V
-- -- 0.4
To be continued
DS9011-08 April 2011www.richtek.com
RT9011
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage TC -- 100 -- ppm/°C
V
Discharge Resistance in
OU T
Shutdown (Note 6)
EN Pull Low Current
Thermal Shutdown
Thermal Shutdown Hysteresis
I
EN
T
ΔT
SD
= 5V, EN1 = EN2 = GND
V
IN
-- 0.2 -- μA
-- 170 --
-- 40 -- °C
SD
f = 100Hz
f = 1kHz -- 70 -PSRR
V
IN
I
LOA D
= V
+ 1V, C
OUT
= 50mA
OUT
= 2.2μF
PSRR
Output Voltage Noise
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2. θ
Note 3. Devices are ESD sensitive. Handling precaution recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. The dropout voltage is defined as V
Note 6. It is guaranteed by design.
is measured in the natural convection at TA = 25°C on a low effective single layer thermal conductivity test board of
JA
JEDEC 51-3 thermal measurement standard.
f = 10kHz -- 70 --
f = 100kHz -- 54 --
= C
OUT1
= 10uF, 10Hz to
OUT2
= I
OUT2
= 1mA
OUT
is V
-V
IN
OUT
f = 200kHz
f = 300kHz
C
OU T1
100kHz, I
, which is measured when V
-- 3 -- kΩ
°C
-- 70 --
dB
-- 45 --
-- 38 --
-- 100 -- uVrms
OUT(NORMAL)
− 100mV.
DS9011-08 April 2011 www.richtek.com
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