MP8903DG-2.85-LF [MPS]
Fixed Positive LDO Regulator, 2.85V, PDSO8, 2 X 2 MM, ROHS COMPLIANT, MO-229VCCD-3, QFN-8;
| 型号： | MP8903DG-2.85-LF |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Fixed Positive LDO Regulator, 2.85V, PDSO8, 2 X 2 MM, ROHS COMPLIANT, MO-229VCCD-3, QFN-8 CD 光电二极管 输出元件 调节器 |
| 文件： | 总9页 (文件大小：413K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP8903
Low Dropout
150mA Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
FEATURES
•
•
2.7V to 6.5V Input Voltage Range
The MP8903 is a 150mA low-dropout linear
regulator that can operate from 2.7V to 6.5V
input. It regulates the output with 2% accuracy
and comes with preset 2.5V, 2.85V or 3.3V
output. An external resistor divider may be used
to adjust the output voltage from 1.25V to 5V.
Fixed Output Voltage Options of 2.5V,
2.85V or 3.3V
•
Adjustable Output Voltage from 1.25V to 5V
using an External Resistor Divider
Low 100mV Dropout at 100mA Output
2% Accurate Output Voltage
Stable With Low-ESR Output Capacitors
Thermal Protection
•
•
•
•
•
The MP8903 has thermal protection to guard
against harsh operating conditions, and is
available in small 2x2 8-pin QFN and 5-pin
TSOT23 packages.
Available in Tiny 2x2 8-Pin QFN and
TSOT23-5 Packages
APPLICATIONS
•
•
•
802.11 PC Cards
Mobile Handset PLL Power
Audio Codec Power
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V
vs I
LOAD
DROPOUT
V
160
140
120
100
80
IN
2.7V to 6.5V
OUTPUT
1.25V to 5V
IN
OUT
R1
R2
MP8903DX-X.X
EN GND
FB
V
IN
The sum of
R1 and R2
should not
60
EN (Pin3)
may be connected
to IN (Pin 1) directly
40
exceed 100k
20
0
0
20 40 60 80 100 120 140 160
(mA)
I
LOAD
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
1
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
GND
EN
IN
1
2
3
4
8
7
6
5
FB
IN
GND
EN
1
2
3
5
4
OUT
FB
NC
OUT
OUT
IN
Part Number**
MP8903DJ–2.5
MP8903DJ–2.85
MP8903DJ–3.3
Package
Temp
–40°C to +85°C
Part Number*
Package
Temp
–40°C to +85°C
MP8903DG–2.5
QFN8
2mm x 2mm
TSOT23-5
MP8903DG–2.85
MP8903DG–3.3
** For Tape & Reel, add suffix –Z (eg. MP8903DJ–2.85–Z)
For Tape & Reel, add suffix –Z (eg. MP8903DG–2.85–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP8903DG–2.85–LF–Z)
*
For RoHS Compliant Packaging, add suffix –LF
(eg. MP8903DJ–2.85–LF–Z)
Recommended Operating Conditions (2)
Input Voltage .................................. 2.7V to 6.5V
Output Voltage................................. 1.25V to 5V
Load Current...........................150mA Maximum
Operating Temperature .............–40°C to +85°C
ABSOLUTE MAXIMUM RATINGS (1)
IN Supply Voltage.......................–0.3V to +7.0V
FB Voltage.........................–0.3V to VOUT + 0.3V
All Other Pins.................................–0.3V to +6V
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ............. –65°C to +150°C
Thermal Resistance (3)
θJA
θJC
TSOT23-5..............................220.... 110.. °C/W
2x2 QFN8 ...............................80...... 16... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
VIN = 5V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
6.5
±2.0
1
Units
V
Operating Voltage
Output Voltage Accuracy
Shutdown Current
IOUT = 1mA
2.7
IOUT = 1mA, VOUT = 1.5V to 5V
±1.0
0.1
%
VEN = 0V, VIN = 5V
µA
1.197 1.222 1.246
FB Regulation Voltage
Dropout Voltage (5)
V
1.194 1.222 1.249
–40°C ≤ TA ≤ +85°C
VOUT = 3V
OUT = 4V
150
125
IOUT = 150mA
mV
V
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
2
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
ELECTRICAL CHARACTERISTICS
VIN = 5V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
OUT = 1mA,
VIN = (VOUT + 0.5V) to 6.5V (6)
Min
Typ
Max
Units
I
Line Regulation
0.005
0.08
%/V
I
OUT = 1mA to 150mA,
Load Regulation
PSRR
0.001
50
0.02
%/mA
dB
VIN = VOUT + 0.5V (6)
VIN > VOUT +0.5V, C3 = 2.2µF,
VIN(AC) = 100mV, f = 1kHz (4)
VIN > VOUT +0.5V, C3 = 2.2µF,
VIN(AC) = 100mV, f = 1MHz (4)
20
dB
EN Input High Voltage
EN Input Low Voltage
EN Input Bias Current
Thermal Protection (4)
Thermal Protection Hysteresis (4)
Notes:
1.5
1
V
V
0.4
VEN = 0V
0.01
155
30
µA
°C
°C
4) Parameter is guaranteed by design, not production tested.
5) Dropout Voltage is defined as the input to output differential when the output voltage drops 1% below its normal value.
6) VIN = 2.7V for VOUT = 1.25V to 2.2V
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
3
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 4.5V, VOUT = 2.85V, C1 = 1µF, C2 = 0.1µF, C3 = 2.2µF, TA = +25°C unless otherwise noted.
I
vs V
I
vs I
LOAD
GND
IN
GND
135
130
125
120
115
110
105
135
130
125
120
115
110
105
V
= 6.5V
IN
I
= 150mA
V
= 5.0V
LOAD
IN
I
= 1mA
LOAD
V
= 2.7V
100
IN
2
3
4
5
6
7
0
50
150
V
(V)
I
(mA)
LOAD
IN
V
vs I
LOAD
DROPOUT
V
OUT
vs. V
IN
160
140
120
100
80
2.87
2.865
2.86
I
= 1mA
LOAD
2.855
2.85
60
I
= 150mA
LOAD
40
2.845
2.84
20
0
0
20 40 60 80 100 120 140 160
(mA)
3
4
5
6
7
I
V
(V)
LOAD
IN
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
4
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
PIN FUNCTIONS
2x2 QFN8 TSOT23-5
Pin #
1
Pin #
2
Name Description
GND Ground.
Enable Input. Drive EN high to turn on the MP8903; low to turn it off. For
automatic startup, connect EN to IN.
2
3
1
5
EN
Power Source Input. IN supplies the internal power to the MP8903 and is the
source of the pass transistor. Bypass IN to GND with a 1µF or greater
capacitor.
Regulator Output. OUT is the output of the linear regulator. Bypass OUT to
GND with a 1µF or greater capacitor.
3, 4
IN
5, 6
7
OUT
NC No Connect.
Feedback Input. Connect a resistive voltage divider from OUT to FB to set the
output voltage. The OUT feedback threshold is 1.222V.
8
4
FB
OPERATION
The MP8903 is a low-current, low-dropout
linear regulator. The MP8903 uses a PMOS
pass element and features internal thermal
shutdown. The normally fixed output MP8903
may be converted to an adjustable output device
by applying a resistor divider network as shown in
Figure 2. An optional feed-forward capacitor, CBYP
,
may be added for an improved transient response.
OUT
V
V
IN
OUT
INTERNAL
RESISTOR
DIVIDER
C
BYP
+
--
FB
BANDGAP
REFERENCE
C3
V
EN
GND
Figure 1—Fixed Output Regulator
EXTERNAL
RESISTOR
DIVIDER
OUT
V
V
IN
OUT
R1
FB
C
BYP
+
--
BANDGAP
REFERENCE
R2
C
OUT
V
EN
GND
Figure 2—Adjustable Regulator: VOUT = VFB(1+(R1/R2))
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
5
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
Input Capacitor Selection
APPLICATION INFORMATION
Setting the Output Voltage
The fixed output voltage of the MP8903 is set to
2.5V, 2.85V or 3.3V, depending on the internal
resistor divider (Figure 1). You can also adjust
the output voltage by using an external resistor
divider (R1 and R2 in Figure 2). However, the
sum of R1 and R2 should not exceed 100kΩ in
order to minimize the impact of the internal
resistor divider. For an accurate output-voltage
setting, use 10kΩ (±1%) for the low-side
resistor R2 of the voltage divider, while the
high-side resistor R1 can be determined by the
equation:
For proper operation, place a ceramic capacitor
(C1) between 1µF and 10µF of dielectric type
X5R or X7R between the input pin and ground.
Larger values in this range will help improve
line transient response at the drawback of
increased size.
Output Capacitor Selection
For stable operation, use a ceramic capacitor
(C3) of type X5R or X7R between 1µF and
10µF. Larger values in this range will help
improve load transient response and reduce
noise with the drawback of increased size.
Output capacitors of other dielectric types may
be used, but are not recommended as their
capacitance can deviate greatly from their rated
value over temperature.
⎛
⎞
VOUT − VFB
⎜
⎜
⎟
⎟
R1 = R2×
VFB
⎝
⎠
Where VFB is the OUT feedback threshold
voltage equal to 1.222V.
To improve load transient response, add a
small ceramic (X5R, X7R or Y5V dielectric)
100nF feed forward capacitor in parallel with R1.
The feed forward capacitor is not required for
stable operation.
Example: For 2.5V Output
2.5V −1.222V
R1=
= 10.41kΩ
1.222V
⎛
⎞
⎜
⎟
10kΩ
⎝
⎠
You can select a standard 10.5kꢀ (±1%)
resistor for R1.
The following table lists the selected R1 values
for some typical output voltages:
Table 1—Adjustable Output Voltage R1 Values
R2 (Ω)
VOUT (V)
1.25
1.5
1.8
2
R1 (Ω)
232
2.26k
4.75k
6.34k
10.5k
13k
2.5
2.8
3
10k
14.7k
16.9k
22.6k
30.9k
3.3
4
5
In Figures 3 and 4, C2 is added for an improved
transient response.
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
6
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
TYPICAL APPLICATION CIRCUIT
V
IN
2.7V to 6.5V
3, 4
5, 6
OUTPUT
2.85V
IN
OUT
C2
100nF
MP8903DX-2.85
2
8
V
IN
EN
GND
FB
1
Figure 3—Typical Application Circuit (Fixed)
V
IN
2.7V to 6.5V
3, 4
5, 6
OUTPUT
2V
IN
OUT
MP8903DX-X.X
2
8
V
IN
EN GND
FB
1
Figure 4—Typical Application Circuit (Adjustable)
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
7
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
PACKAGE INFORMATION
2mm x 2mm QFN8
PIN 1 ID
SEE DETAIL A
1.90
2.10
0.25
0.45
0.45
0.65
PIN 1 ID
MARKING
0.18
0.30
8
5
1
1.90
2.10
1.05
1.25
0.50
BSC
PIN 1 ID
INDEX AREA
4
TOP VIEW
BOTTOM VIEW
PIN 1 ID OPTION A
R0.20 TYP.
PIN 1 ID OPTION B
R0.20 TYP.
0.80
1.00
0.20 REF
0.00
0.05
SIDE VIEW
DETAIL A
NOTE:
1.90
0.60
0.70
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX.
4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VCCD-3.
5) DRAWING IS NOT TO SCALE.
0.25
0.50
1.20
RECOMMENDED LAND PATTERN
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
8
MP8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
TSOT23-5
0.95
BSC
0.60
TYP
2.80
3.00
5
4
1.20
TYP
1.50
1.70
2.60
TYP
2.60
3.00
1
3
TOP VIEW
RECOMMENDED LAND PATTERN
0.84
0.90
1.00 MAX
SEATING PLANE
0.09
0.20
0.30
0.50
0.00
0.10
0.95 BSC
SEE DETAIL "A"
FRONT VIEW
SIDE VIEW
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
GAUGE PLANE
0.25 BSC
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSION.
0.30
0.50
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.10 MILLIMETERS MAX.
0o-8o
5) DRAWING CONFORMS TO JEDEC MO-193, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
DETAIL A
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
MP8903 Rev. 1.1
9/21/2007
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
9
相关型号：
MP8903DG-2.85-LF-Z
Fixed Positive LDO Regulator, 2.85V, PDSO8, 2 X 2 MM, ROHS COMPLIANT, MO-229VCCD-3, QFN-8
MPS
MP8903DG-3.3-LF
Fixed Positive LDO Regulator, 3.3V, PDSO8, 2 X 2 MM, ROHS COMPLIANT, MO-229VCCD-3, QFN-8
MPS
MP8903DJ-2.5-LF
Fixed Positive LDO Regulator, 2.5V, PDSO5, ROHS COMPLIANT, MO-193AA, TSOT-23, 5 PIN
MPS
MP8903DJ-2.5-LF-Z
Fixed Positive LDO Regulator, 2.5V, PDSO5, ROHS COMPLIANT, MO-193AA, TSOT-23, 5 PIN
MPS
MP8903DJ-2.85-LF
Fixed Positive LDO Regulator, 2.85V, PDSO5, ROHS COMPLIANT, MO-193AA, TSOT-23, 5 PIN
MPS
©2020 ICPDF网 联系我们和版权申明