AP7311-30WG-7 [DIODES]
Fixed Positive LDO Regulator, 3V, 0.3V Dropout, CMOS, PDSO5, GREEN, SOT-25, 5 PIN;
| 型号： | AP7311-30WG-7 |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Fixed Positive LDO Regulator, 3V, 0.3V Dropout, CMOS, PDSO5, GREEN, SOT-25, 5 PIN 光电二极管 输出元件 调节器 |
| 文件： | 总13页 (文件大小：253K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Description
Features
The AP7311 is a 150mA, adjustable and fixed output voltage, low
dropout linear regulator. The device included pass element, error
amplifier, band-gap, current limit and thermal shutdown circuitry.
The device is turned on when EN pin is set to logic high level.
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•
•
•
•
•
•
•
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•
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150mA Low Dropout Regulator with EN
Very low IQ over full load: 65µA
Wide input voltage range: 2V to 6V
Wide adjustable output: 0.8V to 5.0V
Fixed output options: 1.0V to 3.3V
PSRR: 65dB at 100Hz
The characteristics of low dropout voltage and low quiescent
current make it suitable for low power applications, for example,
battery powered devices. The typical quiescent current is
approximately 65μA.
Fast start-up time: 80µs
Stable with low ESR, 1µF ceramic output capacitor
Excellent Load/Line Transient Response
Low dropout: 150mV typical at 150mA
Current limit protection
Built-in current-limit and thermal-shutdown functions prevent IC
from damage in fault conditions.
The AP7311 is available in SOT25 package.
Short circuit protection
Thermal shutdown protection
Ambient temperature range: -40ºC to 85°C
SOT25: Available in “Green” Molding Compound
(No Br, Sb)
•
Lead Free Finish/RoHS Compliant (Note 1)
Applications
•
•
•
•
Notebook and Desktop Computers and Pheripherals
Portable Devices
Battery Powered Devices
CD-ROM, DVD and LAN Cards
Typical Application Circuit
VIN
VIN
VOUT
VOUT
IN
IN
OUT
ADJ
OUT
AP7311
GND
AP7311
GND
R1
R2
1uF
1uF
1uF
1uF
Enable
Enable
EN
EN
Adjustable Output
Fixed Output
⎛
⎞
R1
R 2
⎜
⎟
⎟
VOUT = VREF 1+
⎜
⎝
⎠
AP7311 Rev. 2
1 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Ordering Information
AP7311 - XX XX G - 7
Output
Packing
Package
Green
Blank : ADJ
G : Green
W : SOT25
7 : Tape & Reel
10 : 1.0V
12 : 1.2V
15 : 1.5V
18 : 1.8V
20 : 2.0V
25 : 2.5V
28 : 2.8V
30 : 3.0V
33 : 3.3V
7” Tape and Reel
Quantity Part Number Suffix
3000/Tape & Reel
Packaging
(Note 2)
SOT25
Device
Package Code
AP7311-XXWG-7
W
-7
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP7311 Rev. 2
2 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Pin Assignment
(1) SOT25 (Fixed Output)
(2) SOT25 (Adj Output)
( Top View )
( Top View )
1
2
5
4
1
2
5
4
IN
OUT
NC
IN
OUT
ADJ
GND
GND
EN 3
EN 3
Pin Descriptions
Pin Number
Pin Name
Description
SOT25
SOT25
(fixed)
(adj)
IN
GND
EN
ADJ
NC
1
2
3
-
1
2
3
4
-
Voltage input pin. Bypass to ground through at least 1µF capacitor
Ground
Enable input, active high
Output feedback pin
4
No connection
Voltage output pin. Bypass to ground through 1µF ceramic
capacitor
OUT
5
5
AP7311 Rev. 2
3 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Functional Block Diagram
IN
OUT
IN
OUT
Current Limit
Gate
Driver
Current Limit
and Thermal
Shutdown
Gate
Driver
and Thermal
Shutdown
EN
EN
R
ADJ
0.4V
0.4V
R
GND
GND
Adjustable Version
Fixed Version
Absolute Maximum Ratings
Symbol
ESD HBM
ESD MM
VIN
Parameter
Ratings
Units
kV
V
Human Body Model ESD Protection
Machine Model ESD Protection
Input Voltage
6
400
7
V
EN Voltage
VIN + 0.3
Internal Limited
-40 ~ 125
-65 ~150
640
V
Continuous Load Current
Operating Junction Temperature Range
Storage Temperature Range
Power Dissipation (Note 3)
Maximum Junction Temperature
TOP
TST
PD
°C
°C
SOT25
mW
°C
TJ
150
Recommended Operating Conditions
Symbol
Parameter
Min
2
0
Max
Unit
V
mA
°C
Input voltage
6
150
85
VIN
IOUT
TA
Output Current (Note 4)
Operating Ambient Temperature
-40
Notes:
3. Ratings apply to ambient temperature at 25°C
4. The device maintains a stable, regulated output voltage without a load current.
AP7311 Rev. 2
4 of 13
NOVEMBER 2009
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AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Electrical Characteristics
(TA = 25oC, VIN = VOUT +1V, CIN = 1uF, COUT = 1uF, VEN = 2V, unless otherwise stated)
Symbol
Parameter
Test Conditions
VEN = VIN, IOUT = 0mA
VEN = VIN, IOUT = 150mA
VEN = 0V, IOUT = 0mA
VEN = 0V, OUT grounded
IOUT = 150mA
Min Typ. Max Unit
55
65
75
85
1
⎯
Input Quiescent Current
μA
IQ
μA
μA
Input Shutdown Current
Input Leakage Current
Dropout Voltage (Note 5)
ISHDN
ILEAK
VDropout
⎯
⎯
1
150 300 mV
ADJ Reference Voltage (Adjustable
version)
I
OUT= 0mA
0.4
V
μA
%
VREF
IADJ
ADJ Leakage (Adjustable version)
1
2
⎯
TA = -40oC to 85oC,
IOUT = 30mA
Output Voltage Accuracy
-2
VOUT
ΔVOUT
/ΔVIN/V
ΔVOUT
/VOUT
VIN = (VOUT +1V) to VIN-Max
,
Line Regulation
Load Regulation
Start-up Time
0.01 0.20 %/V
V
EN = VIN, IOUT = 1mA
VIN = (VOUT +1V) to VIN-Max
IOUT from 1mA to 150mA
,
-0.6
0.6
%
V
I
V
EN = 0V to 2.0V, VOUT = 1.8V
OUT = 150mA
IN = [VOUT +1V]VDC + 0.5VppAC
f = 100Hz, IOUT = 30mA
80
μs
tST
,
PSRR
65
50
dB
mA
mA
PSRR
ISHORT
ILIMIT
Short-circuit Current
Current Limit
V
IN = VIN-Min to VIN-Max, VOUT < 0.2V
V
IN = (VOUT +1V) to VIN-Max
,
200 300
VOUT/ROUT = 0.5A
EN Input Logic Low Voltage
EN Input Logic High Voltage
EN Input Current
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Thermal Resistance
VIN = VIN-Min to VIN-Max
VIN = VIN-Min to VIN-Max
VIN = 0V or VIN-Max
0.4
1
V
V
μA
°C
°C
VIL
VIH
IEN
TSHDN
THYS
1.4
-1
140
15
SOT25 (Note 6)
190
oC/W
θJA
Junction-to-Ambient
Notes:
5. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value.
This parameter only applies to output voltages above 1.8V.
6. Test conditions for SOT25: Device mounted on FR-4 substrate PCB, with minimum recommended pad layout, 2oz copper, single sided
AP7311 Rev. 2
5 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Typical Performance Characteristics
Quiescent Current vs Input Voltage
Iload=150mA
Quiescent Current vs Input Voltage
Iload=0mA
60
56
52
48
44
40
60
56
52
48
44
40
Vout=1.8V
Vout=1.8V
90℃
90℃
25℃
-45℃
25℃
-45℃
2.8
3.2
3.6
4
4.4
4.8
5.2
5.6
6
2.8
3.2
3.6
4
4.4
4.8
5.2
5.6
6
Input Voltage (V)
Input Voltage (V)
Reference Voltage vs Input Voltage
Line Regulation (%/V)
0.41
0.405
0.4
0.06
0.05
0.04
0.03
0.02
0.01
0
Vout=1.8V
Vin=Vout +1V
-45℃
90℃
25℃
-45℃
25℃
0.395
0.39
90℃
2.8
3.2
3.6
4
4.4
4.8
5.2
5.6
6
2
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Input Voltage (V)
Dropout Voltage
Load Regulation (%)
2.4
2
200
Vout=1.8V
Vin=Vout +1V
Vout=2.5V
-45℃
90℃
25℃
160
120
80
1.6
1.2
0.8
0.4
0
90℃
25℃
-45℃
40
0
-0.4
0
25
50
75
100
125
150
0
30
60
90
120
150
Output Current (mA)
Output Current (mA)
AP7311 Rev. 2
6 of 13
NOVEMBER 2009
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AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Typical Performance Characteristics (Continued)
Current Limit vs Input Voltage
Short Circuit vs Input Voltage
55
50
45
40
35
360
350
340
330
320
310
300
290
280
Vout=1.8V
Vout=0.8V
Ta=25℃
-45℃
25℃
90℃
2
2.4
2.8
3.2
3.6
4
4.4
4.8
5.2
5.6
6
2.8
3.2
3.6
4
4.4
4.8
5.2
5.6
6
Input Voltage (V)
Input Voltage (V)
PSRR
PSRR
80
80
75
70
65
60
55
50
45
40
35
75
70
65
60
55
50
45
40
35
Vout=0.8V
Vin=5V
Cin=Cout=1uF
Vout=1.8V
Vin=2.8V
Cin=Cout=1uF
Ta=25℃
Ta=25℃
0.1
1
10
100
0.1
1
10
100
Frequency (kHz)
Frequency (kHz)
AP7311 Rev. 2
7 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Typical Performance Characteristics (Continued)
Start-Up Time (No Load)
Start-Up Time (150mA Load)
Ven=0 to 2V (1V/div)
Vin=2.8V
Ven=0 to 2V (1V/div)
Vin=2.8V
Cin=Cout=1uF
Cin=Cout=1uF
Vout=1.8V (1V/div)
Vout=1.8V (1V/div)
Iout=150mA (150mA/div)
Time (50us/div)
Time (50us/div)
Line Transient Response
Line Transient Response
Vin=2.8V to 3.8V (1V/div)
Tr=15us
Vin=3.8V to 2.8V (1V/div)
Tf=15us
Vout=1.8V (50mV/div)
Vout=1.8V (50mV/div)
Iout=150mA (150mA/div)
Iout=150mA (150mA/div)
Time (50us/div)
Time (50us/div)
AP7311 Rev. 2
8 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Typical Performance Characteristics (Continued)
Load Transient Response
Load Transient Response
Tr=Tf=15us
Vin=2.8V
Tr=Tf=15us
Vin=6V
Vout=1.8V
(100mV/div)
Vout=5.0V
(100mV/div)
Iout=1mA to 150mA
(50mA/div)
Iout=1mA to 150mA
(50mA/div)
Time (50us/div)
Time (50us/div)
AP7311 Rev. 2
9 of 13
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NOVEMBER 2009
© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Application Note
Characteristics section under VIL and VIH.
Input Capacitor
A 1μF ceramic capacitor is recommended to connect between
VIN and GND pins to decouple input power supply glitch and
noise. The amount of the capacitance may be increased
without limit. This input capacitor must be located as close as
possible to the device to assure input stability and less noise.
For PCB layout, a wide copper trace is required for both VIN and
Current Limit Protection
When output current at OUT pin is higher than current limit
threshold, the current limit protection will be triggered and
clamp the output current to approximately 300mA to prevent
over-current and to protect the regulator from damage due to
overheating.
GND.
A lower ESR capacitor allows the use of less
capacitance, while higher ESR type requires more
capacitance.
Short Circuit Protection
When OUT pin is short-circuit to GND or OUT pin voltage is
less than 200mV, short circuit protection will be triggered and
clamp the output current to approximately 50mA. This feature
protects the regulator from over-current and damage due to
overheating.
Output Capacitor
The output capacitor is required to stabilize and help transient
response for LDO. The AP7311 is stable with very small
ceramic output capacitors. The recommended capacitance is
from 1μF to 4.7μF, Equivalent Series Resistance (ESR) is from
10mΩ to 200mΩ, and temperature characteristic is X7R or X5R.
Higher capacitance values help to improve load/line transient
response. The output capacitance may be increased to keep
low undershoot/overshoot. Place output capacitor as close as
possible to OUT and GND pins, and keep the leads as short as
possible.
Thermal Shutdown Protection
Thermal protection disables the output when the junction
temperature rises to approximately +140°C, allowing the device
to cool down. When the junction temperature reduces to
approximately +125°C the output circuitry is enabled again.
Depending on power dissipation, thermal resistance, and
ambient temperature, the thermal protection circuit may cycle
on and off. This cycling limits the heat dissipation of the
regulator, protecting it from damage due to overheating.
Adjustable Operation
The AP7311 provides output voltage from 0.8V to 5.0V through
external resistor divider as shown below.
Ultra Fast Start-up
VIN
VOUT
After enabled, the AP7311 is able to provide full power in as
little as tens of microseconds, typically 80µs, without sacrificing
low ground current. This feature will help load circuitry move in
and out of standby mode in real time, eventually extend battery
life for mobile phones and other portable devices.
IN
OUT
AP7331
GND
R1
R2
1uF
1uF
Enable
ADJ
EN
Fast Transient Response
Fast transient response LDOs can extend battery life.
TDMA-based cell phone protocols such as Global System for
Mobile Communications (GSM) have a transmit/receive duty
factor of only 12.5 percent, enabling power savings by putting
much of the baseband circuitry into standby mode in between
transmit cycles. In baseband circuits, the load often transitions
virtually instantaneously from 100µA to 100mA. To meet this
load requirement, the LDO must react very quickly without a
large voltage drop or overshoot — a requirement that cannot
be met with conventional, general-purpose LDOs.
The output voltage is calculated by:
⎛
⎞
R1
R2
⎜
⎟
⎟
VOUT = VREF 1+
⎜
⎝
⎠
Where VREF=0.4V (the internal reference voltage)
Rearranging the equation will give the following that is used for
adjusting the output to a particular voltage:
The AP7311’s fast transient response from 0 to 150mA
provides stable voltage supply for fast DSP and GSM chipset
with fast changing load.
⎛
⎞
VOUT
VREF
⎜
⎜
⎟
⎟
R1 = R2
−1
⎝
⎠
Small Overshoot and Undershoot
The AP7311 has small and controlled overshoot and
undershoot in load and line transitions. This helps to protect
supplied circuit from damage and operation error caused by
glitches. This feature also permits the usage of small value
output decoupling capacitor with AP7311.
To maintain the stability of the internal reference voltage, R2
need to be kept smaller than 125kΩ.
No Load Stability
Other than external resistor divider, no minimum load is
required to keep the device stable. The device will remain
stable and regulated in no load condition.
Low Quiescent Current
The AP7311, consuming only around 65µA for all input range
and output loading, provides great power saving in portable
and low power applications.
ON/OFF Input Operation
The AP7311 is turned on by setting the EN pin high, and is
turned off by pulling it low. If this feature is not used, the EN pin
should be tied to IN pin to keep the regulator output on at all
time. To ensure proper operation, the signal source used to
drive the EN pin must be able to swing above and below the
specified turn-on/off voltage thresholds listed in the Electrical
Wide Output Range
The AP7311, with a wide output range of 0.8V to 5.0V,
provides
a
versatile LDO solution for many portable
applications.
AP7311 Rev. 2
10 of 13
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NOVEMBER 2009
© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Marking Information
(1) SOT25
( Top View )
5
1
4
XX : Identification code
Y : Year 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week; z represents
52 and 53 week
W X
XX Y
X : A~Z : Green
2
3
Device
Package
SOT25
SOT25
SOT25
SOT25
SOT25
SOT25
SOT25
SOT25
SOT25
SOT25
Identification Code
AP7311-ADJ
AP7311-10
AP7311-12
AP7311-15
AP7311-18
AP7311-20
AP7311-25
AP7311-28
AP7311-30
AP7311-33
RM
RN
RP
RR
RS
RT
RU
RV
RW
RX
AP7311 Rev. 2
11 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Package Information (All Dimensions in mm)
(1) Package Type: SOT25
AP7311 Rev. 2
12 of 13
NOVEMBER 2009
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© Diodes Incorporated
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any
liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated
convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products
described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the
companies whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized
application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems
without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2009, Diodes Incorporated
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AP7311 Rev. 2
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