MPS MP8801DJ-3.3 Low dropout 150ma linear regulator Datasheet

MP8801
Low Dropout
150mA Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP8801 is a low-noise, low-dropout linear
regulator. It operates from a 2.7V to 6.5V input
voltage and regulates the output voltage with
2% accuracy at 2.5V, 2.85V or 3.3V. The
internally set output voltage may be overridden
with an external resistor divider from 1.25V to
5V.
The MP8801 can supply up to 150mA of load
current. The MP8801 features thermal overload
protection and is available in a 5-pin TSOT23-5
package.
FIXED VOLTAGE PART NUMBERS
Part Number
Output Voltage
MP8801DJ–2.5
MP8801DJ–2.85
MP8801DJ–3.3
2.5V
2.85V
3.3V
•
•
•
•
•
•
•
Low 100mV Dropout at 100mA Output
2% Accurate Output Voltage
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
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
APPLICATIONS
EVALUATION BOARD REFERENCE
*
•
•
•
Board Number
Output*
Dimensions
EV8801DJ-00A
2.85V
2.0”X x 2.0”Y x 0.4”Z
•
•
•
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.
Default output voltage adjustable from 1.25V to 5.0V using an
external resistor divider.
TYPICAL APPLICATION
VIN
160
1
IN
OUT
5
VIN
EN
GND
2
EN (Pin3)
may be connected
to IN (Pin 1) directly
FB
140
1.5V to 5V
R1
MP8801DJ-X.X
3
OUTPUT
4
The sum of
R1 and R2
R2 should not
exceed 100k
VDROPOUT (mV)
2.7V to 6.5V
VDROPOUT vs ILOAD
120
100
80
60
40
20
0
MP8801 Rev. 1.7
10/3/2006
0
20 40 60 80 100 120 140 160
ILOAD (mA)
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1
MP8801 – LOW DROPOUT, 150mA LINEAR REGULATOR
ABSOLUTE MAXIMUM RATINGS (1)
PACKAGE REFERENCE
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
TOP VIEW
1
GND
2
EN
MARKING
IN
3
5
OUT
Recommended Operating Conditions
4
FB
Part Number**
Package
Temp
MP8801DJ–2.5
TSOT23-5
–40°C to +85°C
MP8801DJ–2.85
TSOT23-5
–40°C to +85°C
MP8801DJ–3.3
TSOT23-5
–40°C to +85°C
** For Tape & Reel, add suffix –Z (eg. MP8801DJ–2.85–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP8801DJ–2.85–LF–Z)
(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
Thermal Resistance
(3)
θJA
θJC
TSOT23-5.............................. 220 .... 110.. °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
Operating Voltage
Output Voltage Accuracy
Ground Pin Current
Shutdown Current
FB Regulation Voltage
Dropout Voltage (5)
Line Regulation
Load Regulation
PSRR
Output Voltage Noise
EN Input High Voltage
EN Input Low Voltage
EN Input Bias Current
Thermal Protection (4)
Thermal Protection Hysteresis (4)
Symbol Condition
IOUT = 1mA
IOUT = 1mA, VOUT = 1.5V to 5V
IOUT = 1mA–150mA
VEN = 0V, VIN = 5V
–40°C ≤ TA ≤ 85°C
VOUT = 3V
IOUT = 150mA
VOUT = 4V
IOUT = 1mA,
VIN = (VOUT + 0.5V) to 6.5V (6)
IOUT = 1mA to 150mA,
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)
f = 1kHz, C2 > 0.1µF, IOUT = 1mA (4)
Min
2.7
Typ (4)
Max
6.5
±1.0
±2.0
125
150
0.1
1
1.197 1.222 1.246
1.194 1.222 1.249
150
125
Units
V
%
µA
µA
0.005
0.08
%/V
0.001
0.02
%/mA
mV
70
dB
30
dB
300
1.5
0.4
VEN = 0V, 5V
V
0.01
155
30
1
nV/√Hz
V
V
µA
°C
°C
Notes:
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
MP8801 Rev. 1.7
10/3/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
2
MP8801 – 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.
IGND vs VIN
IGND vs ILOAD
135
135
125
125
120
120
ILOAD = 1mA
115
80
3
4
5
VIN (V)
6
105
7
2.86
ILOAD = 1mA
2.855
ILOAD = 150mA
2.85
VIN = 2.7V
110
2
VOUT vs. VIN
2.865
VIN = 5.0V
115
110
105
VIN = 6.5V
130
ILOAD = 150mA
VOUT (V)
130
2.87
2.845
0
50
100
ILOAD (mA)
150
2.84
Output Noise
Spectral Density
PSRR vs Frequency
3
4
5
VIN (V)
6
7
Output Noise
Spectral Density
70
PSRR (dB)
60
50
40
30
x: 1.024kHz
y: 240.013n
20
10
0.01
0.1
1
10
100
FREQUENCY (KHz)
1000
x: 1.024kHz
y: 287.004n
IOUT = 150mA
128
102.4K
128
102.4K
FREQUENCY (Hz)
FREQUENCY (Hz)
Load-Transient Response
VDROPOUT vs ILOAD
IOUT = 1mA
Line-Transient Response
(Circuit in Figure 3)
(Circuit in Figure 3)
VDROPOUT (mV)
160
140
4V
120
3V
ILOAD
(50mA/div.)
100
VIN
(1V/div.)
80
VOUT
(20mV/div.)
60
40
2.85V
VOUT
(10mV/div.)
20
0
0
20 40 60 80 100 120 140 160
ILOAD (mA)
MP8801 Rev. 1.7
10/3/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
3
MP8801 – LOW DROPOUT, 150mA LINEAR REGULATOR
PIN FUNCTIONS
Pin #
Name
1
IN
2
GND
3
EN
4
FB
5
OUT
Description
Power Source Input. IN supplies the internal power to the MP8801 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 MP8801; 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. The 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
element and features internal thermal shutdown.
The normally fixed output MP8801 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.
The MP8801 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
microphones. The MP8801 uses a PMOS pass
IN
VIN
OUT
1
5
VOUT
INTERNAL
RESISTOR
DIVIDER
CBYP
4
+
--
FB
BANDGAP
REFERENCE
C3
EN
VEN
3
2
GND
Figure 1—Ultra-Low-Noise Fixed Output Regulator
EXTERNAL
RESISTOR
OUT DIVIDER
VIN
1
5
VOUT
FB
+
--
R1
4
BANDGAP
REFERENCE
R2
VEN
CBYP
COUT
3
GND
2
Figure 2—Ultra-Low-Noise Adjustable Regulator: VOUT = VFB(1+(R1/R2))
MP8801 Rev. 1.7
10/3/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
4
MP8801 – LOW DROPOUT, 150mA LINEAR REGULATOR
APPLICATION INFORMATION
SETTING THE OUTPUT VOLTAGE
INPUT CAPACITOR SELECTION
The fixed output voltage of the MP8801DJ 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.
⎛V
− VFB
R1 = R2 × ⎜⎜ OUT
VFB
⎝
⎞
⎟⎟
⎠
Where VFB is the OUT feedback threshold
voltage equal to 1.222V.
Example: For 2.5V Output
R1 =
2.5 V − 1.222 V
= 10.41kΩ
⎛ 1.222 V ⎞
⎜
⎟
⎝ 10kΩ ⎠
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.
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.
You can select a standard 10.5kΩ (±1%)
resistor for R1.
The following table lists the selected R1 values
for some typical output voltages:
Table 1—Adjustable Output Voltage R1 Values
VOUT (V)
R1 (Ω)
1.25
232
1.5
2.26k
1.8
4.75k
2
6.34k
2.5
10.5k
2.8
13k
3
14.7k
3.3
16.9k
4
22.6k
5
30.9k
R2 (Ω)
10k
In Figures 3 and 4, C2 is added for an improved
transient response.
MP8801 Rev. 1.7
10/3/2006
www.MonolithicPower.com
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© 2006 MPS. All Rights Reserved.
5
MP8801 – LOW DROPOUT, 150mA LINEAR REGULATOR
TYPICAL APPLICATION CIRCUIT
VIN
2.7V to 6.5V
1
IN
OUT
5
2.85V
C2
100nF
MP8801DJ-2.85
3
VIN
EN
GND
OUTPUT
FB
4
2
Figure 3—Typical Application Circuit (Fixed)
VIN
2.7V to 6.5V
1
IN
OUT
5
OUTPUT
2V
MP8801DJ-X.X
VIN
3
EN
GND
FB
4
2
Figure 4—Typical Application Circuit (Adjustable)
MP8801 Rev. 1.7
10/3/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
6
MP8801 – LOW DROPOUT, 150mA LINEAR REGULATOR
PACKAGE INFORMATION
TSOT23-5
0.95
BSC
0.60
TYP
2.80
3.00
5
4
1.20
TYP
1.50
1.70
1
2.60
TYP
2.60
3.00
3
TOP VIEW
RECOMMENDED LAND PATTERN
0.84
0.90
1.00 MAX
0.09
0.20
SEATING PLANE
0.30
0.50
0.95 BSC
0.00
0.10
SEE DETAIL "A"
FRONT VIEW
SIDE VIEW
NOTE:
GAUGE PLANE
0.25 BSC
0.30
0.50
0o-8o
DETAIL A
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.10 MILLIMETERS MAX.
5) DRAWING CONFORMS TO JEDEC MO-193, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
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.
MP8801 Rev. 1.7
10/3/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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