RTQ2569-QA
36V, 2A I
Q
, Peak 200mA, Low Dropout Voltage Linear Regulator
General Description
The RTQ2569 is a high input voltage (36V), low
quiescent current (2A), low-dropout linear regulator
(LDO) capable of sourcing peak 200mA. The device
supports high input voltage with few component makes it
easy to use.
The high input voltage, low dropout voltage, ultra-low
quiescent current, and miniaturized package as low as
2A, the RTQ2569 is ideally suited for automotive and
other battery operated system.
The RTQ2569 retains all of the features that are
common to low-dropout, short circuit protection and
thermal operation.
The RTQ2569 has 36V maximum operating voltage
limit
40°C
to 125°C operating temperature range.
The RTQ2569 is available in WDFN-8L 3x3 package.
Features
AEC-Q100 Grade 1 Qualified
Ultra low Quiescent Current 2A (typ.)
±2%
Output Accuracy
100mA Continuous Output Current
Operating Input Voltage : 3.5V to 36V
Low dropout voltage : 200mV at 10mA
Fixed Output Voltage : 2.5V to 12V with 0.1V Per
Step
Current Limit Protection
Over-Temperature Protection
RoHS Compliant and Halogen Free
Quiescent Current vs. Temperature
6
5
4
V
CC
= 36V
3
2
1
V
OUT
= 3.3V
0
-50
-25
0
25
50
75
100
125
V
CC
= 14V
Applications
Automotive
Always On Power
Portable, Battery Powered Equipments
Extra Low Voltage Microcontrollers
Notebook Computers
E-Meters
Handset Peripherals
Quiescent Current (μA)
Temperature (°C)
Note :
Richtek products are :
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DSQ2569-QA-01
October 2018
www.richtek.com
1
RTQ2569-QA
Ordering Information
RTQ2569-
-QA
Grade
QA : AEC-Q100 Qualified and
Screened by High Temperature
Pin Configuration
(TOP VIEW)
VCC
NC
GND
NC
1
2
3
4
8
7
6
5
Package Type
QW : WDFN-8L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Output Voltage
25 : 2.5V
30 : 3V
33 : 3.3V
50 : 5V
70 : 7V
80 : 8V
90 : 9V
C0 : 12V
Special Request: Any Voltage
between 2.5V and 12V under
specific business agreement
9
EN
NC
VOUT
NC
WDFN-8L 3x3
Marking Information
For
marking
information,
contact
our
sales
representative directly or through a Richtek distributor
located in your area.
Functional Pin Description
Pin No.
1
2, 4, 5, 7
3, 9 (Exposed Pad)
6
8
Pin Name
VCC
NC
GND
VOUT
EN
Pin Function
Power input. The input voltage range is from 3.5V to 36V. Connect a suitable
input capacitor between this pin and GND, usually 1F ceramic capacitors.
No internal connection.
Ground. The exposed pad must be soldered to a large PCB and connected
to GND for maximum thermal dissipation.
Output of the regulator.
Enable control input. A logic-high enables the converter; a logic-low forces
the device into shutdown mode.
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DSQ2569-QA-01
GND
October 2018
RTQ2569-QA
Functional Block Diagram
VCC
Current/Thermal
Sense
R1
VOUT
GND
EN
Band Gap
Reference
Operation
The RTQ2569 ultra low quiescent current regulator is
ideally suited for automotive and other battery operated
systems, with less than 2A quiescent current at a
10mA load. The device features low dropout voltage
and low current in the standby mode and retains all of
the features that are common to low dropout regulators
including a low dropout P-MOSFET, over current
protect circuit protection and thermal shutdown. The
RTQ2569 has a 36V maximum operating voltage limit
and ±2% output voltage tolerance over temperature
range.
Output Transistor
The RTQ2569 builds in a P-MOSFET output transistor
which provides a low switch-on resistance for low
dropout voltage applications.
Error Amplifier
The Error Amplifier compares the internal reference
voltage with the output feedback voltage from the
internal divider, and controls the Gate voltage of
P-MOSFET to support good line regulation and load
regulation at output voltage.
Enable
The RTQ2569 provides an EN pin, as an external chip
enable control, to enable or disable the device. If V
EN
is
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
held below a logic-low threshold voltage (V
IL
) of the
enable input (EN), the converter will enter into
shutdown mode, that is, the converter is disabled even
if the VCC voltage is above VCC under-voltage lockout
threshold (V
UVLO
). During shutdown mode, the supply
current can be reduced. If the EN voltage rises above
the logic-high threshold voltage (V
IH
) while the VCC
voltage is higher than UVLO threshold (V
UVLO
), the
device will be turned on, that is, the RTQ2569 being
enabled and soft-start sequence being initiated.
Current Limit Protection
Over-current protection of the RTQ2569 prevents IC
damaged and reduces the thermal effects by overload
conditions. When an overload or short circuit is happen,
the device will shut down to prevent IC damaged. IC
recovery when overload or short circuit is removed.
Over-Temperature Protection
The RTQ2569 includes an over-temperature protection
(OTP) circuitry to prevent overheating due to excessive
power dissipation. The OTP will shut down operation
when junction temperature exceeds a thermal
shutdown threshold 150°C (typ.). Once the junction
temperature cools down by a thermal shutdown
hysteresis 20°C, the IC will resume normal operation
with a complete soft-start.
is a registered trademark of Richtek Technology Corporation.
DSQ2569-QA-01
October 2018
-
+
R2
www.richtek.com
3
RTQ2569-QA
Absolute Maximum Ratings
(Note 1)
VCC, EN to GND ----------------------------------------------------------------------------------------------------
0.3V
to 40V
VOUT to VCC --------------------------------------------------------------------------------------------------------
40V
to 0.3V
VOUT to GND
RTQ2569-90/RTQ2569-C0 --------------------------------------------------------------------------------------
0.3V
to 15V
RTQ2569-25/RTQ2569-30/RTQ2569-33/RTQ2569-50 ---------------------------------------------------
0.3V
to 6V
Power Dissipation, P
D
@ T
A
= 25°C
WDFN-8L 3x3 ---------------------------------------------------------------------------------------------------------
2.85W
Package Thermal Resistance (Note 2)
WDFN-8L 3x3,
JA
-------------------------------------------------------------------------------------------------
35°C/W
WDFN-8L 3x3,
JC
-------------------------------------------------------------------------------------------------
9°C/W
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------260C
Junction Temperature -----------------------------------------------------------------------------------------------150C
Storage Temperature Range ---------------------------------------------------------------------------------------65C to 150C
ESD Susceptibility (Note 3)
HBM (Human Body Model) ----------------------------------------------------------------------------------------
2kV
Recommended Operating Conditions
(Note 4)
Supply Input Voltage --------------------------------------------------------------------------------------------------3.5V to 36V
Junction Temperature Range ---------------------------------------------------------------------------------------40C to 125C
Ambient Temperature Range----------------------------------------------------------------------------------------40C to 125C
Electrical Characteristics
(C
IN
= 1F, T
J
=
40C
to 125C, unless otherwise specified)
Parameter
Supply Voltage
Output Voltage Range
DC Output Accuracy
Dropout Voltage
V
CC
Consumption
Current
Shutdown GND
Current
Shutdown GND
Current
EN Input Current
I
EN
Symbol
V
CC
V
OUT
V
OUT
V
DROP
I
Q
V
CC
= 15V, I
LOAD
= 10mA
V
CC
= 3.5V, V
OUT
3.5V, I
LOAD
= 10mA
V
CC
= V
OUT,
V
OUT
3.5V, I
LOAD
= 10mA
V
CC
= V
EN
= 15V, V
OUT
5.5V, I
LOAD
= 0mA
V
CC
= V
EN
= 15V, V
OUT
5.5V, I
LOAD
= 0mA
V
CC
= 36V, V
EN
= 0V, V
OUT
= 0V,
40°C
T
J
105°C
V
CC
= 36V, V
EN
= 0V, V
OUT
= 0V,
105°C
T
J
125°C
V
EN
= 36V
Test Conditions
Min
3.5
2.5
2
--
--
--
--
--
--
Typ
--
--
--
0.2
2
3.5
0.01
0.2
0.01
Max
36
12
+2
0.36
3.5
5
0.2
0.4
0.1
Unit
V
V
%
V
A
A
A
A
A
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DSQ2569-QA-01
October 2018
RTQ2569-QA
Parameter
Symbol
Test Conditions
V
OUT
+ 1
<
V
CC
< 36V, V
OUT
3.3V,
I
LOAD
=
1mA
V
OUT
+ 1
<
V
CC
< 36V, V
OUT
3.3V,
I
LOAD
=
1mA
V
CC
= V
OUT
+ 4V, 0mA < I
LOAD
< 100mA,
40°C
T
J
105°C
V
CC
= V
OUT
+ 4V, 0mA < I
LOAD
< 100mA,
105°C
T
J
125°C
V
CC
= V
OUT
+ 6V, V
OUT
5.5V
V
CC
= V
OUT
+ 3V, V
OUT
5.5V
Min
--
--
--
--
Typ
0.04
0.04
--
--
Max
0.5
Unit
Line Regulation
V
LINE
%
0.6
1
1.5
%
%
Load Regulation
Load Regulation
Output Current Limit
Enable
Input
Voltage
Logic-High
Logic-Low
V
LOAD
V
LOAD
I
LIM
V
IH
V
IL
T
SD
T
SD
200
1.7
--
275
--
--
150
20
350
--
0.5
--
--
mA
V
°C
°C
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
I
LOAD
= 30mA,
Note 5
(Note 5)
--
--
Note 1.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These
are stress ratings only, and 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 may affect
device reliability.
Note 2.
JA
is measured under natural convection (still air) at T
A
= 25C with the component mounted on a high
effective-thermal-conductivity four-layer test board on a JEDEC 51-7 thermal measurement standard.
JC
is measured at
the exposed pad of the package.
Note 3.
Devices are ESD sensitive. Handling precaution is recommended.
Note 4.
The device is not guaranteed to function outside its operating conditions.
Note 5.
Guarantee by design.
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DSQ2569-QA-01
October 2018
www.richtek.com
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
