MCP1701
2 µA Low Dropout Positive Voltage Regulator
Features
• 2.0 µA 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 and
3-Pin SOT-89
• Short Circuit Protection
• Standard Output Voltage Options:
- 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
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 µA of
quiescent current (typ.). 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% (typ.) and very good line regulation
at ±0.2%. The LDO output is stable when using only
1 µF 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 and 3-pin
SOT-89.
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
Package Types
3-Pin SOT-23A
V
IN
3
MCP1701
1
GND
2
V
OUT
MCP1701
1
2
3
GND V
IN
V
OUT
3-Pin SOT-89
V
IN
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
Note:
3-Pin SOT-23A is equivalent to the EIAJ
SC-59.
©
2005 Microchip Technology Inc.
DS21874B-page 1
MCP1701
Functional Block Diagram
MCP1701
V
IN
V
OUT
Short-Circuit
Protection
+
Voltage
Reference
GND
Typical Application Circuits
MCP1701
V
IN
9V Alkaline Battery
C
IN
1 µF Tantalum
GND
V
OUT
3.3V
I
OUT
50 mA
V
IN
V
OUT
C
OUT
1 µF Tantalum
DS21874B-page 2
–
©
2005 Microchip Technology Inc.
MCP1701
1.0
ELECTRICAL
CHARACTERISTICS
† Notice:
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.
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
PIN FUNCTION TABLE
Symbol
GND
V
OUT
V
IN
Description
Ground Terminal
Regulated Voltage Output
Unregulated Supply Input
ELECTRICAL CHARACTERISTICS
Electrical Specifications:
Unless otherwise specified, all limits are established for an ambient temperature of T
A
= +25°C.
Parameters
Output Voltage Regulation
Maximum Output Current
Sym
V
OUT
I
OUT
MAX
Min
V
R
- 2%
250
200
150
150
125
110
Typ
V
R
±0.5%
—
—
—
—
—
—
±0.8
±1.1
±1.3
±1.5
±1.8
±0.8
400
400
400
400
400
180
2.0
0.2
—
±100
200
Max
V
R
+ 2%
—
—
—
—
—
—
+1.60
+2.25
+2.72
+3.00
+3.60
+1.60
630
630
700
700
700
300
3.0
0.3
10
—
—
Units
V
mA
V
OUT
= 5.0V
V
OUT
= 4.0V
V
OUT
= 3.3V
V
OUT
= 3.0V
V
OUT
= 2.5V
V
OUT
= 1.8V
%
Conditions
I
OUT
= 40 mA
(Note 1)
(V
IN
= V
R
+ 1.0V)
Load Regulation
(Note 3)
ΔV
OUT/
V
OUT
-1.60
-2.25
-2.72
-3.00
-3.60
-1.60
V
OUT
= 5.0V, 1 mA
≤
I
OUT
≤
100 mA
V
OUT
= 4.0V, 1 mA
≤
I
OUT
≤
100 mA
V
OUT
= 3.3V, 1 mA
≤
I
OUT
≤
80 mA
V
OUT
= 3.0V, 1 mA
≤
I
OUT
≤
80 mA
V
OUT
= 2.5V, 1 mA
≤
I
OUT
≤
60 mA
V
OUT
= 1.8V, 1 mA
≤
I
OUT
≤
30 mA
Dropout Voltage
V
IN
- V
OUT
—
—
—
—
—
—
mV
I
OUT
= 200 mA, V
R
= 5.0V
I
OUT
= 200 mA, V
R
= 4.0V
I
OUT
= 160 mA, V
R
= 3.3V
I
OUT
= 160 mA, V
R
= 3.0V
I
OUT
= 120 mA, V
R
= 2.5V
I
OUT
= 20 mA, V
R
= 1.8V
Input Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient of
Output Voltage
Output Rise Time
I
Q
ΔV
OUT
•100
ΔV
IN
•V
OUT
V
IN
TCV
OUT
T
R
—
—
—
—
—
µA
%/V
V
ppm/°
C
µsec
V
IN
= V
R
+ 1.0V
I
OUT
= 40 mA, (V
R
+1)
≤
V
IN
≤
10.0V
I
OUT
= 40 mA, -40°C
≤
T
A
≤ +85°C
(Note 2)
10% V
R
to 90% V
R
, V
IN
= 0V to V
R
+1V,
R
L
= 25Ω resistive
1:
2:
3:
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.
TCV
OUT
= (V
OUT-HIGH
– V
OUT-LOW
) *10
6
/ (V
R
*
Δ
Temperature), V
OUT-HIGH
= Highest voltage measured
over the temperature range. V
OUT-LOW
= Lowest voltage measured over the temperature range.
Load regulation is measured at a constant junction temperature using low duty cycle pulse testing.
©
2005 Microchip Technology Inc.
DS21874B-page 3
MCP1701
TEMPERATURE CHARACTERISTICS
Electrical Specifications:
Unless otherwise specified, T
A
= +25
°C.
Parameters
Temperature Ranges
Specified Temperature Range (I)
Storage Temperature Range
Package Thermal Resistances
Thermal Resistance, 3L-SOT-23A
θ
JA
—
—
Thermal Resistance, 3L-SOT-89
θ
JA
—
335
230
52
—
—
—
°C/W
°C/W
°C/W
Minimum trace width single
layer application
Typical FR4, 4-layer
application
Typical, when mounted on 1
square inch of copper
T
A
T
A
-40
-40
—
—
+85
+125
°C
°C
Sym
Min
Typ
Max
Units
Conditions
DS21874B-page 4
©
2005 Microchip Technology Inc.
MCP1701
2.0
Note:
TYPICAL PERFORMANCE CURVES
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.
Notes:
Unless otherwise specified, V
OUT
= 1.8V, 3.0V, 5.0V, T
A
= +25°C, C
IN
= 1 µF Tantalum, C
OUT
= 1 µF Tantalum.
2.65
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
1.95
2
V
R
= 1.8V
2.10
2.05
2.00
1.95
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
1.20
0
+25°C
+85°C
0°C
Supply Current (µA)
+25°C
0°C
-40°C
Supply Current (µA)
-40°C
V
IN
= 4.0V
V
R
= 3.0V
20
40
60
80
100
120
140
160
3
4
5
6
7
8
9
10
Input Voltage (V)
Load Current (mA)
FIGURE 2-1:
Supply Current vs. Input
Voltage (V
R
= 1.8V).
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
3
4
V
R
= 3.0V
+25°C
+85°C
FIGURE 2-4:
Supply Current vs. Load
Current (V
R
= 3.0V).
2.75
2.70
2.65
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
0
20
+25°C
+85°C
0°C
Supply Current (µA)
-40°C
Supply Current (µA)
-40°C
V
IN
= 6.0V
V
R
= 5.0V
120
140
160
180
200
5
6
7
8
9
10
40
60
80
100
Input Voltage (V)
Load Current (mA)
FIGURE 2-2:
Supply Current vs. Input
Voltage (V
R
= 3.0V).
3.00
2.85
V
R
= 5.0V
FIGURE 2-5:
Supply Current vs. Load
Current (V
R
= 5.0V).
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
-40
-20
0
V
R
= 5.0V
Supply Current (µA)
2.70
2.55
2.40
2.25
2.10
1.95
1.80
1.65
1.50
5
6
7
8
9
10
+25°C
+85°C
-40°C
Supply Current (µA)
V
R
= 1.8V
V
R
= 3.0V
V
IN
= V
R
+ 1V
I
OUT
= 0 µA
20
40
60
80
100
Input Voltage (V)
Temperature (°C)
FIGURE 2-3:
Supply Current vs. Input
Voltage (V
R
= 5.0V).
FIGURE 2-6:
Temperature.
Supply Current vs.
©
2005 Microchip Technology Inc.
DS21874B-page 5
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