RT9080 [RICHTEK]
2μA IQ, 600mA Low-Dropout Linear Regulator;
| 型号： | RT9080 |
| 厂家： | 
RICHTEK TECHNOLOGY CORPORATION |
| 描述： | 2μA IQ, 600mA Low-Dropout Linear Regulator |
| 文件： | 总9页 (文件大小：119K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
RT9080
Preliminary
2μA IQ, 600mA Low-Dropout Linear Regulator
General Description
Features
2μA Ground Current at no Load
PSRR = 75dB at 1kHz
The RT9080 is a low-dropout (LDO) voltage regulators with
enable function that operates from 1.2V to 5.5V. It provides
up to 600mA of output current and offers low-power
operation in miniaturized packaging.
Adjustable Output Voltage Available by Specific
Application
2% Output Accuracy
The features of low quiescent current as low as 2μA and
almost zero disable current is ideal for powering the battery
equipment to a longer service life. The RT9080 is stable
with the ceramic output capacitor over its wide input range
from 1.2V to 5.5V and the entire range of output load
current (0mA to 600mA).
600mA (VIN ≥ 2.3V) Output Current with EN
Low (0.1μA) Disable Current
1.2V to 5.5V Operating Input Voltage
Dropout Voltage : 0.3V at 600mA when VOUT ≥ 3V
Support Fixed Output Voltage 0.8V to 3.3V
Stable with Ceramic or Tantalum Capacitor
Current Limit Protection
Ordering Information
Over Temperature Protection
RT9080/N-
SOT-23-5 and ZQFN-4L 1x1 (ZDFN-4L 1x1) Packages
Available
Package Type
J5 : TSOT-23-5
QZ : ZQFN-4L 1x1 (Z-Type)
(ZDFN-4L 1x1)
Applications
Lead Plating System
G : Green (Halogen Free and Pb Free) Portable, Battery Powered Equipment
Ultra Low Power Microcontrollers
Notebook computers
Output Voltage
08 : 0.8V
:
33 : 3.3V
Marking Information
Special Request : Any voltage between
0.8V and 3.3V under specific business
agreement
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Pin Function
RT9080 : Without SNS Pin
RT9080N : With SNS Pin
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.
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS9080-P00 July 2015
www.richtek.com
1
Preliminary
RT9080
Pin Configurations
(TOP VIEW)
VOUT
SNS/NC
1
2
4
3
VOUT
GND
VIN
EN
5
4
3
SGND
2
5
VIN GND EN
TSOT-23-5
ZQFN-4L 1x1 (ZDFN-4L 1x1)
Functional Pin Description
Pin No.
Pin Name
Pin Function
TSOT-23-5 ZQFN-4L 1x1 (ZDFN-4L 1x1)
1
2
3
4
2
3
VIN
Supply Voltage Input.
GND
EN
Ground.
Enable Control Input.
SNS
NC
Output Voltage Sense. (RT9080N only)
No Internal Connection.
4
--
5
1
VOUT
SGND
Output of the Regulator.
--
5 (Exposed Pad)
Substrate of Chip. Leave floating or tie to GND.
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS9080-P00 July 2015
Preliminary
RT9080
Function Block Diagram
VIN
VOUT
(without sense
function)
Current/Thermal
Sense
GND
SNS
(with sense
function)
R1
EN
R2
Bandgap
Reference
EN
Operation
Basic operation
Current Limit Protection
The RT9080 is a low quiescent current linear regulator
designed especially for low external components system.
The input voltage range is from 1.2V to 5.5V.
The RT9080 provides current limit function to prevent the
device from damages during over-load or shorted-circuit
condition. This current is detected by an internal sensing
transistor.
Output Transistor
Over Temperature Protection
The RT9080 builds in a P-MOSFET output transistor which
provides a low switch-on resistance for low dropout voltage
applications.
The over temperature protection function will turn off the
P-MOSFET when the junction temperature exceeds 150°C
(typ.), VIN ≥ 1.5V and the output current exceeds 30mA.
Once the junction temperature cools down by
approximately 20°C, the regulator will automatically
resume operation.
Error Amplifier
The ErrorAmplifier 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 RT9080 delivers the output power when it is set to
enable state. When it works in disable state, there is no
output power and the operation quiescent current is almost
zero.
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS9080-P00 July 2015
www.richtek.com
3
Preliminary
RT9080
Absolute Maximum Ratings (Note 1)
VIN, VOUT, SNS, EN to GND------------------------------------------------------------------------------------------- −0.3V to 6.5V
VOUT to VIN ---------------------------------------------------------------------------------------------------------------- −6.5V to 0.3V
Power Dissipation, PD @ TA = 25°C
TSOT-23-5 ------------------------------------------------------------------------------------------------------------------- 0.43W
ZQFN-4L 1x1 (ZDFN-4L 1x1)-------------------------------------------------------------------------------------------- 1.07W
Package Thermal Resistance (Note 2)
TSOT-23-5, θJA ------------------------------------------------------------------------------------------------------------- 230.6°C/W
ZQFN-4L 1x1 (ZDFN-4L 1x1), θJA -------------------------------------------------------------------------------------- 92.7°C/W
ZQFN-4L 1x1 (ZDFN-4L 1x1), θJC ------------------------------------------------------------------------------------- 62.3°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)
Input Voltage, VIN --------------------------------------------------------------------------------------------------------- 1.2V to 5.5V
Junction Temperature Range-------------------------------------------------------------------------------------------- −40°C to 125°C
Ambient Temperature Range-------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VOUT + 1 < VIN < 5.5V, TA = 25°C, unless otherwise specified)
Parameter
Output Voltage Range
DC Output Accuracy
Symbol
Test Conditions
Min
0.8
2
--
Typ
--
Max
3.3
2
Unit
V
VOUT
ILOAD = 1mA
--
%
0.8V VOUT 1.2V
1.2V VOUT 1.5V
1.5V VOUT 1.8V
1.8V VOUT 2.5V
2.5V VOUT 3V
3V VOUT
0.92
0.74
0.6
0.5
0.38
0.3
2
--
--
--
--
--
Dropout Voltage
(ILOAD = 600mA) (Note 5)
VDROP
V
--
--
--
--
--
--
VCC Consumption Current
Shutdown GND Current
Shutdown Leakage Current
EN Input Current
IQ
ILOAD = 0mA, VOUT ≦ 5.5V
VEN = 0V
--
--
A
A
A
A
--
0.1
0.1
--
0.5
0.5
0.1
VEN = 0V, VOUT = 0V
VEN = 5.5V
--
IEN
--
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS9080-P00 July 2015
Preliminary
RT9080
Parameter
Symbol
Test Conditions
1.2V VIN 1.5V
Min
--
Typ
0.3
Max
--
Unit
1.5V VIN 1.8V
1.8V VIN 2.1V
2.1V VIN 5.5V
--
0.15
0.05
0.08
0.5
--
Line Regulation
LINE
ILOAD = 1mA
%
--
--
--
--
Load Regulation
LOAD
1mA < ILOAD < 600mA
--
--
%
Power Supply Rejection
Ratio
V
C
IN = 3V, ILOAD = 50mA,
OUT = 1F, VOUT = 2.5V, f = 1kHz
PSRR
--
75
--
dB
VOUT = 0.8V
--
--
39
46
48
58
800
--
--
--
C
OUT = 1F,
I
LOAD = 150mA,
VOUT = 1.2V
VOUT = 1.8V
VOUT = 3.3V
Output Voltage Noise
BW = 10Hz to
100kHz,
VRMS
--
--
VIN = VOUT + 1V
--
--
Output Current Limit
ILIM
VIH
VIL
VOUT = 90%VOUT(Normal)
VIN = 5V
--
--
mA
V
Logic-High
Logic-Low
0.9
--
--
Enable Input
Voltage
VIN = 5V
--
0.4
Thermal Shutdown
Temperature
TSD
ILOAD = 30mA, VIN 1.5V
--
--
--
150
20
--
--
--
C
C
Thermal Shutdown
Hysteresis
TSD
Discharge Resistance
EN = 0V, VOUT = 0.1V
100
Note 1. Stresses beyond those listed “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. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7.
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. The dropout voltage is defined as VIN − VOUT, when VOUT is 98% of the normal value of VOUT
.
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS9080-P00 July 2015
www.richtek.com
5
Preliminary
RT9080
Typical Application Circuit
RT9080N
V
IN
VIN
EN
VOUT
SNS
V
OUT
C
1µF
C
1µF
IN
OUT
EN
GND
Figure 1. Application with Sense Function
RT9080
V
IN
VIN
EN
VOUT
V
OUT
C
1µF
C
1µF
IN
OUT
EN
GND
Figure 2. Application without Sense Function
RT9080N
VIN
EN
VOUT
SNS
1µF
NC
R1
R2
1µF
GND
Figure 3. Adjustable Output Voltage Application Circuit
Copyright 2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
©
www.richtek.com
6
DS9080-P00 July 2015
Preliminary
RT9080
Outline Dimension
H
D
L
B
C
A
b
A1
e
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
B
0.700
0.000
1.397
0.300
2.591
2.692
0.838
0.080
0.300
1.000
0.100
1.803
0.559
3.000
3.099
1.041
0.254
0.610
0.028
0.000
0.055
0.012
0.102
0.106
0.033
0.003
0.012
0.039
0.004
0.071
0.022
0.118
0.122
0.041
0.010
0.024
b
C
D
e
H
L
TSOT-23-5 Surface Mount Package
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS9080-P00 July 2015
www.richtek.com
7
Preliminary
RT9080
1
2
1
2
DETAILA
Pin #1 ID and Tie Bar Mark Options
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
0.300
0.000
0.117
0.175
0.900
0.450
0.900
0.450
Max.
0.400
0.050
0.162
0.275
1.100
0.550
1.100
0.550
Min.
0.012
0.000
0.005
0.007
0.035
0.018
0.035
0.018
Max.
0.016
0.002
0.006
0.011
0.043
0.022
0.043
0.022
A
A1
A3
b
D
D2
E
E2
e
0.625
0.025
L
0.200
0.300
0.008
0.012
H
0.039
0.064
0.002
0.003
H1
Z-Type 4L QFN 1x1 Package
Richtek Technology Corporation
14F, No. 8, Tai Yuen 1st Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789
Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should
obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot
assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be
accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.
www.richtek.com
8
DS9080-P00 July 2015
Preliminary
RT9080
Datasheet Revision History
Version
P00
Date
Item
Description
2015/7/21
First Edition
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS9080-P00 July 2015
www.richtek.com
9
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