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MPQ8903DJ-2.85-LF-P

P1-P3P4-P6P7-P8
MPQ8903
Industrial Grade, Low Dropout
150mA Linear Regulator
MPQ8903 Rev. 1.2 www.MonolithicPower.com 1
5/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MPQ8903 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.
The MPQ8903 has thermal protection to guard
against harsh operating conditions, and is
available in 5-pin TSOT23 package.
FEATURES
• Guaranteed Industrial Operating Temperate
Range Limits
• 2.7V to 6.5V Input Voltage Range
• 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
• Available in TSOT23-5 Package
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
MPQ8903DX-X.X
FB
OUT
GND
EN
IN
OUTPUT
1.25V to 5V
V
IN
2.7V to 6.5V
V
IN
C3
2.2µ F
CERAMIC
C1
1µ F
EN (Pin3)
may be connected
to IN (Pin 1) directly
The sum of
R1 and R2
should not
exceed 100k
R1
R2
160
140
120
100
80
60
40
20
0
V
DROPOUT
(mV)
0 20 40 60 80 100 120 140 160
I
LOAD
(mA)
V
DROPOUT
vs I
LOAD
MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
MPQ8903 Rev. 1.2 www.MonolithicPower.com 2
5/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking Free Air Temperature (T
A
)
MPQ8903DJ–2.5
R4
MPQ8903DJ–2.85
R5
MPQ8903DJ–3.3
TSOT23-5
R6
–40°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MPQ8903DJ–2.85–Z)
For RoHS Compliant Packaging, add suffix –LF (e.g. MPQ8903DJ–2.85–LF–Z)
PACKAGE REFERENCE
TOP VIEW
MARKING
IN
GND
EN
1
2
3
5
4
OUT
FB
ABSOLUTE MAXIMUM RATINGS
(1)
IN Supply Voltage .......................–0.3V to +7.0V
FB Voltage .........................–0.3V to V
OUT
+ 0.3V
All Other Pins.................................–0.3V to +6V
Continuous Power Dissipation (T
A
= +25°C)
(2)
……………………………………………….0.56W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ............. –65°C to +150°C
Recommended Operating Conditions
(3)
Input Voltage...................................2.7V to 6.5V
Output Voltage.................................1.25V to 5V
Load Current...........................150mA Maximum
Operating Junct. Temp (T
J
)..... –40°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
TSOT23-5 ..............................220 .... 110 .. °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX)=(T
J
(MAX)-
T
A
)/
JA
. Exceeding the maximum allowable power dissipation
will cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on
JESD51-7, 4-layer PCB.
MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR
MPQ8903 Rev. 1.2 www.MonolithicPower.com 3
5/21/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
= 5V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Operating Voltage I
OUT
= 1mA 2.7 6.5 V
±1.0 ±2.0
Output Voltage Accuracy
I
OUT
= 1mA
V
OUT
= 1.5V to 5V
–40°C ≤ T
A
≤ +85°C
±1.0 ±3.0
%
0.1 1
Shutdown Current V
EN
= 0V, V
IN
= 5V
–40°C ≤ T
A
≤ +85°C
0.1 2
µA
1.197 1.222 1.246
FB Regulation Voltage
–40°C ≤ T
A
≤ +85°C
1.194 1.222 1.249
V
V
OUT
= 3V 150
Dropout Voltage
(6)
I
OUT
= 150mA
V
OUT
= 4V 125
mV
0.005 0.08
Line Regulation
I
OUT
= 1mA,
V
IN
= (V
OUT
+ 0.5V)
to 6.5V
(7)
–40°C ≤ T
A
≤ +85°C
0.005 0.11
%/V
0.001 0.02
Load Regulation
I
OUT
= 1mA to
150mA,
V
IN
= V
OUT
+ 0.5V
(7)
–40°C ≤ T
A
≤ +85°C
0.001 0.03
%/mA
V
IN
> V
OUT
+0.5V, C3 = 2.2µF,
V
IN
(AC) = 100mV, f = 1kHz
(5)
50 dB
PSRR
V
IN
> V
OUT
+0.5V, C3 = 2.2µF,
V
IN
(AC) = 100mV, f = 1MHz
(5)
20 dB
EN Input High Voltage 1.5 V
EN Input Low Voltage 0.4 V
0.01 1
EN Input Bias Current V
EN
= 0V
–40°C ≤ T
A
≤ +85°C
0.01 2
µA
Thermal Protection
(5)
155
°C
Thermal Protection
Hysteresis
(5)
30
°C
Notes:
5) Parameter is guaranteed by design, not production tested.
6) Dropout Voltage is defined as the input to output differential when the output voltage drops 1% below its normal value.
7) V
IN
= 2.7V for V
OUT
= 1.25V to 2.2V
P1-P3P4-P6P7-P8

MPQ8903DJ-2.85-LF-P

Mfr. #:
Buy MPQ8903DJ-2.85-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LDO Voltage Regulators 150mA Linear LDO
Lifecycle:
New from this manufacturer.
Delivery:
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