2004 Microchip Technology Inc.
DS21874A-page 1
M
MCP1701
Features
2.0 A Typical Quiescent Current
Input Operating Voltage Range up to 10.0V
Low Dropout Voltage:
- 250 mV (typ.) @ 100 mA
- 500 mV (typ.) @ 200 mA
High Output Current: 250 mA (V
OUT
= 5.0V)
High-Accuracy Output Voltage: 2% (max)
Low Temperature Drift: 100 ppm/C (typ.)
Excellent Line Regulation: 0.2%/V (typ.)
Package Options: 3-Pin SOT-23A, 3-Pin SOT-89
and 3-Pin TO-92
Short-Circuit Protection
Standard Output Voltage Options:
- 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
Applications
Battery-Powered Devices
Battery-Powered Alarm Circuits
Smoke Detectors
CO
2
Detectors
Smart Battery Packs
PDAs
Low Quiescent Current Voltage Reference
Cameras and Portable Video Equipment
Pagers and Cellular Phones
Solar-Powered Instruments
Consumer Products
Microcontroller Power
Related Literature
AN765, "Using Microchip's Micropower LDOs",
DS00765, Microchip Technology Inc., 2002
AN766, "Pin-Compatible CMOS Upgrades to
Bipolar LDOs", DS00766,
Microchip Technology Inc., 2002
General Description
The MCP1701 is a family of CMOS low dropout (LDO),
positive voltage regulators that can deliver up to
250 mA of current while consuming only 2.0 A of
quiescent current (typical). The input operating range is
specified up to 10V, making it ideal for lithium-ion (one
or two cells), 9V alkaline and other two and three
primary cell battery-powered applications.
The MCP1701 is capable of delivering 250 mA with an
input-to-output voltage differential (dropout voltage) of
650 mV. The low dropout voltage extends the battery
operating lifetime. It also permits high currents in small
packages when operated with minimum V
IN
V
OUT
differentials.
The MCP1701 has a tight tolerance output voltage
regulation of 0.5% (typical) and very good line regula-
tion at 0.2%. The LDO output is stable when using
only 1 F of output capacitance of either tantalum or
aluminum-electrolytic style capacitors. The MCP1701
LDO also incorporates short-circuit protection to
ensure maximum reliability.
Package options include the 3-Pin SOT-23A, 3-Pin
SOT-89 and 3-Pin TO-92.
Package Types
V
IN
GND
V
OUT
3
1
2
MCP1701
GND V
IN
V
OUT
1
2
3
MCP1701
3-Pin SOT-23A
3-Pin SOT-89
3-Pin TO-92
1 2 3
V
OUT
V
IN
GND
V
IN
Bottom
View
Note:
The 3-Pin SOT-23A is equivalent to
the EIAJ SC-59.
2 A Low Dropout Positive Voltage Regulator
2004 Microchip Technology Inc.
DS21874A-page 3
MCP1701
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings
Input Voltage ........................................................+12V
Output Current (Continuous)..........P
D
/(V
IN
V
OUT
)mA
Output Current (peak) ..................................... 500 mA
Output Voltage ............... (GND 0.3V) to (V
IN
+ 0.3V)
Continuous Power Dissipation:
3-Pin SOT-23A ............................................ 150 mW
3-Pin SOT-89 .............................................. 500 mW
3-Pin TO-92 ................................................. 300 mW
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
PIN FUNCTION TABLE
Symbol
Description
GND
Ground Terminal
V
OUT
Regulated Voltage Output
V
IN
Unregulated Supply Input
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for an ambient temperature of T
A
= +25C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Output Voltage Regulation
V
OUT
V
R
2%
V
R
0.5%
V
R
+ 2%
V
I
OUT
= 40 mA, (Note 1)
Maximum Output Current
I
OUT
MAX
250
--
--
mA
V
OUT
= 5.0V (V
IN
= V
R
+ 1.0V)
200
--
--
V
OUT
= 4.0V
150
--
--
V
OUT
= 3.3V
150
--
--
V
OUT
= 3.0V
125
--
--
V
OUT
= 2.5V
110
--
--
V
OUT
= 1.8V
Load Regulation (Note 3)
V
OUT/
V
OUT
-1.60
0.8
+1.60
%
V
OUT
= 5.0V, 1 mA
I
OUT
100 mA
-2.25
1.1
+2.25
V
OUT
= 4.0V, 1 mA
I
OUT
100 mA
-2.72
1.3
+2.72
V
OUT
= 3.3V, 1 mA
I
OUT
80 mA
-3.00
1.5
+3.00
V
OUT
= 3.0V, 1 mA
I
OUT
80 mA
-3.60
1.8
+3.60
V
OUT
= 2.5V, 1 mA
I
OUT
60 mA
-1.60
0.8
+1.60
V
OUT
= 1.8V, 1 mA
I
OUT
30 mA
Dropout Voltage
V
IN
- V
OUT
--
400
630
mV
I
OUT
= 200 mA, V
R
= 5.0V
--
400
630
I
OUT
= 200 mA, V
R
= 4.0V
--
400
700
I
OUT
= 160 mA, V
R
= 3.3V
--
400
700
I
OUT
= 160 mA, V
R
= 3.0V
--
400
700
I
OUT
= 120 mA, V
R
= 2.5V
--
180
300
I
OUT
= 20 mA, V
R
= 1.8V
Input Quiescent Current
I
Q
--
2.0
3.0
A
V
IN
= V
R
+ 1.0V
Line Regulation
V
OUT
100
V
IN
V
OUT
--
0.2
0.3
%/V
I
OUT
= 40 mA, (V
R
+1)
V
IN
10.0V
Input Voltage
V
IN
--
--
10
V
Temperature Coefficient of
Output Voltage
TCV
OUT
--
100
--
ppm/
C
I
OUT
= 40 mA, -40C
T
A
+
85C,
(Note 2)
Output Rise Time
T
R
--
200
--
sec
10% V
R
to 90% V
R
, V
IN
= 0V to V
R
+1V,
R
L
= 25
resistive.
1:
V
R
is the nominal regulator output voltage. For example: V
R
= 1.8V, 2.5V, 3.3V, 4.0V, 5.0V.
The input voltage V
IN
= V
R
+ 1.0V, I
OUT
= 40 mA.
2:
TCV
OUT
= (V
OUT-HIGH
V
OUT-LOW
) *10
6
/(V
R
*
Temperature), V
OUT-HIGH
is equal to the highest voltage measured
over the temperature range, while V
OUT-LOW
is equal to the lowest voltage measured over the temperature range.
3:
Load regulation is measured at a constant junction temperature using low duty cycle pulse testing.
MCP1701
DS21874A-page 4
2004 Microchip Technology Inc.
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise specified,
T
A
= +25
C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
Specified Temperature Range (I)
T
A
-40
--
+85
C
Storage Temperature Range
T
A
-40
--
+125
C
Package Thermal Resistances
Thermal Resistance, 3L-SOT-23A
JA
--
335
--
C/W
Minimum trace width single
layer application.
--
230
--
C/W
Typical FR4, 4-layer
application.
Thermal Resistance, 3L-SOT-89
JA
--
52
--
C/W
Typical when mounted on
1 square inch of copper.
Thermal Resistance, 3L-TO-92
JA
--
131.9
--
C/W
EIA/JEDEC JESD51-751-7
4-layer board.
2004 Microchip Technology Inc.
DS21874A-page 5
MCP1701
2.0
TYPICAL PERFORMANCE CURVES
Notes: Unless otherwise specified, V
OUT
= 1.8V, 3.0V, 5.0V, T
A
= +25C, C
IN
= 1 F Tantalum, C
OUT
= 1 F Tantalum.
FIGURE 2-1:
Supply Current vs. Input
Voltage (V
R
= 1.8V).
FIGURE 2-2:
Supply Current vs. Input
Voltage (V
R
= 3.0V).
FIGURE 2-3:
Supply Current vs. Input
Voltage (V
R
= 5.0V).
FIGURE 2-4:
Supply Current vs. Load
Current (V
R
= 3.0V).
FIGURE 2-5:
Supply Current vs. Load
Current (V
R
= 5.0V).
FIGURE 2-6:
Supply Current vs.
Temperature.
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2
3
4
5
6
7
8
9
10
Input Voltage (V)
Supply Current (
A)
V
R
= 1.8V
-40C
0C
+25C
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
3
4
5
6
7
8
9
10
Input Voltage (V)
Supply Current (A)
-40C
+85C
+25C
V
R
= 3.0V
1.50
1.65
1.80
1.95
2.10
2.25
2.40
2.55
2.70
2.85
3.00
5
6
7
8
9
10
Input Voltage (V)
Supply Current (A)
-40C
+85C
+25C
V
R
= 5.0V
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
0
20
40
60
80
100
120
140
160
Load Current (mA)
Supply Current (A)
V
IN
= 4.0V
V
R
= 3.0V
+25C
0C
+85C
-40C
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
0
20
40
60
80
100 120 140 160 180 200
Load Current (mA)
Supply Current (A)
-40C
+25C
+85C
0C
V
IN
= 6.0V
V
R
= 5.0V
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
-40
-20
0
20
40
60
80
100
Temperature (C)
Supply Current (A)
V
R
= 5.0V
V
R
= 1.8V
V
R
= 3.0V
V
IN
= V
R
+ 1V
I
OUT
= 0 A
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