MPS EV8802DJ-00A Low dropout 250ma linear regulator Datasheet

MP8802
Low Dropout
250mA Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
FEATURES
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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•
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FIXED VOLTAGE PART NUMBERS
Part Number
Output Voltage
MP8802DJ–2.5
MP8802DJ–2.85
MP8802DJ–3.3
2.5V
2.85V
3.3V
APPLICATIONS
EVALUATION BOARD REFERENCE
Board Number
Output*
Dimensions
EV8802DJ-00A
2.85V
2.0”X x 2.0”Y x 0.4”Z
*
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•
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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
Default output voltage adjustable from 1.25V to 5.0V using an
external resistor divider.
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•
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802.11 PC Cards
Mobile Handset PLL Power
Audio Codec Power
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
300
VIN
1
IN
OUT
5
3
EN
GND
2
EN (Pin3)
may be connected
to IN (Pin 1) directly
FB
250
1.25V to 5V
R1
MP8802DJ-X.X
VIN
OUTPUT
VDROPOUT (mV)
2.7V to 6.5V
4
The sum of
R1 and R2
R2 should not
exceed 100k
VDROPOUT vs ILOAD
200
150
100
50
MP8802_TAC_S01
0
0
50
100 150 200 250 300
ILOAD (mA)
MP8802_EC01
MP8802 Rev. 1.3
3/6/2006
www.MonolithicPower.com
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© 2006 MPS. All Rights Reserved.
1
MP8802 – LOW DROPOUT, 250mA 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
3
5
MARKING
IN
OUT
Recommended Operating Conditions
4
Input Voltage .................................. 2.7V to 6.5V
Output Voltage................................. 1.25V to 5V
Load Current........................... 250mA Maximum
Operating Temperature .............–40°C to +85°C
FB
MP8802_PD01-TSOT23-5
Part Number**
Package
MP8802DJ–2.5
MP8802DJ–2.85
MP8802DJ–3.3
TSOT23-5
(2)
Temperature
Thermal Resistance
(3)
θJA
θJC
TSOT23-5.............................. 220 .... 110.. °C/W
–40°C to +85°C
** For Tape & Reel, add suffix –Z (eg. MP8802DJ–2.85–Z)
For Lead Free, add suffix –LF (eg. MP8802DJ–2.85–LF–Z)
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
Thermal Protection Hysteresis
Symbol Condition
IOUT = 1mA
IOUT = 1mA, VOUT = 1.25V to 5V
IOUT = 1mA–250mA
VEN = 0V, VIN = 5V
–40°C ≤ TA ≤ +85°C
VOUT = 3V
IOUT = 250mA
VOUT = 4V
IOUT = 1mA,
VIN = (VOUT + 0.5V) to 6.5V (6)
IOUT = 1mA to 250mA,
VIN = VOUT + 0.5V (6)
VIN > VOUT +0.5V, COUT = 2.2µF,
VIN(AC) = 100mV, f = 1kHz
VIN > VOUT + 0.5V, COUT = 2.2µF,
VIN(AC) = 100mV, f = 1MHz
f = 1kHz, CFB > 0.1µF, IOUT = 1mA
Min
2.7
2.0
1.197
1.194
Typ (4)
±1.0
125
0.1
1.222
1.222
230
190
Max
6.5
2.0
155
1
1.246
1.249
V
mV
0.005
0.08
%/V
0.001
0.02
%/mA
70
dB
30
dB
300
1.5
0.4
VEN = 0V, 5V
Units
V
%
µA
µA
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
MP8802 Rev. 1.3
3/6/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
2
MP8802 – LOW DROPOUT, 250mA 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.
180
IGND vs VIN
IGND vs ILOAD
200
2.87
170
2.865
150
VIN = 6.5V
160
140
140
ILOAD = 1mA
130
120
VIN = 5.0V
VOUT (V)
180
ILOAD = 250mA
160
120
2
3
4
5
VIN (V)
6
100
7
2.86
ILOAD = 1mA
2.855
2.85
ILOAD = 250mA
2.845
110
100
VOUT vs. VIN
0
50
100 150
ILOAD (mA)
200
MP8802-TPC01
250
2.84
3
4
5
VIN (V)
6
MP8802-TPC02
MP8802-TPC03
Output Noise
Spectral Density
PSRR vs Frequency
7
Output Noise
Spectral Density
80
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 = 250mA
128
102.4K
128
102.4K
FREQUENCY (Hz)
FREQUENCY (Hz)
MP8802-TPC04
MP8802-TPC05
VDROPOUT vs ILOAD
IOUT = 1mA
MP8802-TPC06
Load-Transient Response
Line-Transient Response
(Circuit in Figure 4)
(Circuit in Figure 4)
300
4V
VDROPOUT (mV)
250
200
VIN
(1V/div.)
3V
ILOAD
(50mA/div.)
150
VOUT
(20mV/div.)
100
VOUT
(10mV/div.)
2.85V
50
0
0
50
100 150 200 250 300
ILOAD (mA)
MP8802-TPC08
MP8802-TPC09
MP8802_TPC07
MP8802 Rev. 1.3
3/6/2006
www.MonolithicPower.com
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© 2006 MPS. All Rights Reserved.
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MP8802 – LOW DROPOUT, 250mA 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 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
microphones. The MP8802 uses a PMOS pass
element and features internal thermal shutdown.
As shown in Figures 1 and 2, optional feedforward capacitor CBYP may be added between
FB and OUT pins for an improved transient
response.
OUT
VIN
VOUT
INTERNAL
RESISTOR
DIVIDER
+
--
CBYP
FB
BANDGAP
REFERENCE
COUT
VEN
GND
MP8802_F01_BD01
Figure 1—Ultra-Low-Noise Fixed Output Regulator
EXTERNAL
RESISTOR
OUT DIVIDER
VIN
VOUT
R1
+
--
BANDGAP
REFERENCE
CBYP
FB
R2
COUT
VEN
GND
MP8802_F02_BD02
Figure 2—Ultra-Low-Noise Adjustable Regulator: VOUT = VFB(1+(R1/R2))
MP8802 Rev. 1.3
3/6/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
4
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
APPLICATION INFORMATION
SETTING THE OUTPUT VOLTAGE
The fixed output voltage of the MP8802DJ 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 to minimize the impact of the
internal resistor divider. For accurate outputvoltage setting, it is suggested to use 10kΩ
(±1%) for the low-side resistor R2 of the voltage
divider, the high side resistor R1 can be
determined by the equation:
⎛V
− VFB
R1 = R2 × ⎜⎜ OUT
V
FB
⎝
⎞
⎟⎟
⎠
Where VFB is the OUT feedback threshold
voltage equal to 1.222V.
Example: For 2.5V Output
R1 =
MP8802 Rev. 1.3
3/6/2006
2.5 V − 1.222 V
= 10.41kΩ
⎛ 1.222 V ⎞
⎜
⎟
⎝ 10kΩ ⎠
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
In Figures 3 and 4, C2 is added for an improved
transient response.
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5
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
TYPICAL APPLICATION CIRCUIT
VIN
2.7V to 6.5V
1
IN
OUT
5
2.85V
C2
100nF
MP8802DJ-2.85
3
VIN
EN
GND
FB
OUTPUT
4
2
MP8802_F03_TAC01
Figure 3—Typical Application Circuit (Fixed)
VIN
2.7V to 6.5V
1
IN
OUT
5
2V
C2
100nF
MP8802DJ-X.X
VIN
3
EN
GND
FB
OUTPUT
4
2
MP8802_F03_TAC01
Figure 4—Typical Application Circuit (Adjustable)
MP8802 Rev. 1.3
3/6/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
6
MP8802 – LOW DROPOUT, 250mA LINEAR REGULATOR
PACKAGE INFORMATION
TSOT23-5
2.90 BSC
0.950
TYP.
3
0.950
TYP.
1.60 BSC
2.80 BSC
3
10°TYP.
(2 plcs)
CL
+ 4°
- 0°
0°
0.25 BSC.
0.300(Min)
0.500(Max)
0.400
±0.10
Gauge Plane
CL
1.00 Max.
0.87±0.03
(5 PLCS)
SEATING PLANE
0.00-0.10
0.127 TYP.
10° TYP.
(2 plcs)
Dimensions are in millimeters
NOTE:
1. Dimensions and tolerances are as per ANSI
Y14.5M, 1994.
2. Die is facing up for mold. Die is facing
down for trim/form, ie. reverse trim/form.
3. Dimensions are exclusive of mold flash and gate burr.
4. The footlength measuring is based on the
gauge plane method.
5. All specification comply to Jedec Spec MO193 Issue C.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
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.
MP8802 Rev. 1.3
3/6/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
7
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