MP8802
Low Dropout
250mA Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
The MP8802 is a low-noise, low-dropout linear
regulator. It operates from 2.7V to 6.5V input
voltage, and regulates the output voltage with
2% accuracy at 2.5V, 2.85V, 3.3V, or from
1.25V to 5V.
The MP8802 can supply up to 250mA of load
current. The MP8802 features thermal overload
protection. It is available in a 5-pin TSOT23-5
package.
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FEATURES
Low 250mV Dropout at 250mA Output
2% Accurate Output Voltage
Fixed Output Voltage Options of 2.5V,
2.85V or 3.3V
Adjustable Output Voltage Option from
1.25V to 5V using an External Resistor
Divider
Up to 6.5V Input Voltage
High PSRR
o
70dB at 1KHz
o
30dB at 1MHz
Better Than 0.001%/mA Load Regulation
Stable With Low-ESR Output Capacitor
Low 125μA Ground Current
Internal Thermal Protection
802.11 PC Cards
Mobile Handset PLL Power
Audio Codec Power
FIXED VOLTAGE PART NUMBERS
Part Number
MP8802DJ
–
2.5
MP8802DJ
–
2.85
MP8802DJ
–
3.3
Output Voltage
2.5V
2.85V
3.3V
APPLICATIONS
EVALUATION BOARD REFERENCE
Board Number
EV8802DJ-00A
*
Output*
2.85V
Dimensions
2.0”X x 2.0”Y x 0.4”Z
Default output voltage adjustable from 1.25V to 5.0V using an
external resistor divider.
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
V
IN
2.7V to 6.5V
1
IN
OUT
5
300
OUTPUT
R1
4
The sum of
R1 and R2
R2
should not
exceed 100k
1.25V to 5V
V
DROPOUT
vs I
LOAD
250
V
DROPOUT
(mV)
MP8802_TAC_S01
MP8802DJ-X.X
V
IN
3
EN
GND
FB
200
150
100
50
0
0
50
100 150 200 250 300
I
LOAD
(mA)
MP8802_EC01
2
EN (Pin3)
may be connected
to IN (Pin 1) directly
MP8802 Rev. 1.4
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
1
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
ORDERING INFORMATION
Part Number*
Package
Top Marking
Free Air Temperature (T
A
)
–40°C to +85°C
MP8802DJ
–
2.5
MP8802DJ
–
2.85
MP8802DJ
–
3.3
G6
TSOT23-5
H2
H3
* For Tape & Reel, add suffix –Z. (eg. MP8802DJ–2.85–Z);
For RoHS compliant packaging, add suffix –LF. (eg. MP8802DJ–2.85–LF–Z)
PACKAGE REFERENCE
TOP VIEW
IN
GND
EN
1
2
3
5
OUT
MARKING
4
FB
MP8802_PD01-TSOT23-5
ABSOLUTE MAXIMUM RATINGS
(1)
Thermal Resistance
(4)
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)
……………………………………………….0.57W
Junction Temperature ...............................150°C
Lead Temperature ....................................260°C
Storage Temperature ............. –65°C to +150°C
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
θ
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
)/
θ
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..
θ
JA
θ
JC
Recommended Operating Conditions
(3)
Input Voltage...................................2.7V to 6.5V
Output Voltage .................................1.25V to 5V
Load Current ...........................250mA Maximum
Operating Junct. Temp (T
J
)...... -40°C to +125°C
MP8802 Rev. 1.4
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
2
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
ELECTRICAL CHARACTERISTICS
V
IN
= 5V, T
A
= +25°C, unless otherwise noted.
Parameter
Operating Voltage
Output Voltage Accuracy
Ground Pin Current
Shutdown Current
FB Regulation Voltage
Dropout Voltage
(6)
Line Regulation
Load Regulation
PSRR
Output Voltage Noise
EN Input High Voltage
EN Input Low Voltage
EN Input Bias Current
Thermal Protection
Thermal Protection Hysteresis
Symbol Condition
I
OUT
= 1mA
I
OUT
= 1mA, V
OUT
= 1.25V to 5V
I
OUT
= 1mA–250mA
V
EN
= 0V, V
IN
= 5V
–40°C
≤
T
A
≤
+85°C
V
OUT
= 3V
I
OUT
= 250mA
V
OUT
= 4V
I
OUT
= 1mA,
V
IN
= (V
OUT
+ 0.5V) to 6.5V
(7)
I
OUT
= 1mA to 250mA,
V
IN
= V
OUT
+ 0.5V
(7)
V
IN
> V
OUT
+0.5V, C
OUT
= 2.2μF,
V
IN
(AC) = 100mV, f = 1kHz
V
IN
> V
OUT
+ 0.5V, C
OUT
= 2.2μF,
V
IN
(AC) = 100mV, f = 1MHz
f = 1kHz, C
FB
> 0.1μF, I
OUT
= 1mA
V
EN
= 0V, 5V
Min
2.7
2.0
1.197
1.194
Typ
(5)
±1.0
125
0.1
1.222
1.222
230
190
0.005
0.001
70
30
300
1.5
0.4
0.01
155
30
1
Max
6.5
2.0
155
1
1.246
1.249
Units
V
%
μA
μA
V
mV
0.08
0.02
%/V
%/mA
dB
dB
nV/√Hz
V
V
μA
°C
°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
MP8802 Rev. 1.4
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
3
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 4.5V, V
OUT
= 2.85V, C1 = 1μF, C2 = 0.1μF, C3 = 2.2μF, T
A
= +25°C unless otherwise noted.
180
170
160
150
140
130
120
110
100
2
3
4
5
V
IN
(V)
6
7
100
0
50
100 150
I
LOAD
(mA)
200
250
I
LOAD
= 1mA
140
120
V
IN
= 5.0V
I
LOAD
= 250mA
180
I
GND
vs V
IN
200
I
GND
vs I
LOAD
2.87
2.865
V
OUT
vs. V
IN
V
OUT
(V)
160
V
IN
= 6.5V
2.86
2.855
2.85
2.845
2.84
3
I
LOAD
= 250mA
I
LOAD
= 1mA
4
5
V
IN
(V)
6
7
MP8802-TPC03
MP8802-TPC01
MP8802-TPC02
PSRR vs Frequency
80
70
60
Output Noise
Spectral Density
Output Noise
Spectral Density
PSRR (dB)
50
40
30
20
10
0.01
0.1
1
10
100
FREQUENCY (KHz)
1000
128
FREQUENCY (Hz)
MP8802-TPC05
x: 1.024kHz
y: 240.013n
I
OUT
= 250mA
102.4K
128
x: 1.024kHz
y: 287.004n
I
OUT
= 1mA
102.4K
FREQUENCY (Hz)
MP8802-TPC06
MP8802-TPC04
V
DROPOUT
vs I
LOAD
300
250
Load-Transient Response
(Circuit in Figure 4)
4V
I
LOAD
(50mA/div.)
3V
Line-Transient Response
(Circuit in Figure 4)
V
IN
(1V/div.)
V
DROPOUT
(mV)
200
150
100
50
0
0
50
V
OUT
(20mV/div.)
2.85V
V
OUT
(10mV/div.)
100 150 200 250 300
I
LOAD
(mA)
MP8802_TPC07
MP8802-TPC08
MP8802-TPC09
MP8802 Rev. 1.4
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
4
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
PIN FUNCTIONS
Pin #
1
2
3
4
5
Name
IN
GND
EN
FB
OUT
Description
Power Source Input. IN supplies the internal power to the MP8802 and is the source of the
pass transistor. Bypass IN to GND with a 1μF or greater capacitor.
Ground.
Enable Input. Drive EN high to turn on the MP8802, drive EN low to turn it off. For
automatic startup, connect EN to IN.
Feedback Input. Connect a resistive voltage divider from OUT to FB to set the output
voltage. OUT feedback threshold is 1.222V.
Regulator Output. OUT is the output of the linear regulator. Bypass OUT to GND with a
1μF or greater capacitor.
OPERATION
The MP8802 is a low-current, low-noise,
high-PSRR, low-dropout, linear regulator. It is
intended for use in devices that require very low
noise power supplies and high-PSRR such as
PLL VCO supplies for mobile handsets and
802.11 PC Cards, as well as audio codecs and
V
IN
INTERNAL
RESISTOR
DIVIDER
microphones. The MP8802 uses a PMOS pass
element and features internal thermal shutdown.
As shown in Figures 1 and 2, optional feed-
forward capacitor C
BYP
may be added between
FB and OUT pins for an improved transient
response.
OUT
V
OUT
C
BYP
FB
C
OUT
+
--
BANDGAP
REFERENCE
V
EN
GND
MP8802_F01_BD01
Figure 1—Ultra-Low-Noise Fixed Output Regulator
EXTERNAL
RESISTOR
OUT
DIVIDER
V
IN
R1
+
--
C
BYP
V
OUT
BANDGAP
REFERENCE
FB
R2
C
OUT
V
EN
GND
MP8802_F02_BD02
Figure 2—Ultra-Low-Noise Adjustable Regulator: V
OUT
= V
FB
(1+(R1/R2))
MP8802 Rev. 1.4
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
5
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