MCP1702
250 mA Low Quiescent Current LDO Regulator
Features
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2.0 µA Quiescent Current (typical)
Input Operating Voltage Range: 2.7V to 13.2V
250 mA Output Current for Output Voltages
≥
2.5V
200 mA Output Current for Output Voltages < 2.5V
Low Dropout (LDO) voltage
- 625 mV typical @ 250 mA (V
OUT
= 2.8V)
0.4% Typical Output Voltage Tolerance
Standard Output Voltage Options:
- 1.2V, 1.5V, 1.8V, 2.5V, 2.8V,
3.0V, 3.3V, 4.0V, 5.0V
Output voltage range 1.2V to 5.5V in 0.1V
Increments (50 mV increments available upon
request)
Stable with 1.0 µF to 22 µF Output Capacitor
Short-Circuit Protection
Overtemperature Protection
Description
The MCP1702 is a family of CMOS low dropout (LDO)
voltage regulators that can deliver up to 250 mA of
current while consuming only 2.0 µA of quiescent
current (typical). The input operating range is specified
from 2.7V to 13.2V, making it an ideal choice for two to
six primary cell battery-powered applications, 9V
alkaline and one or two cell Li-Ion-powered
applications.
The MCP1702 is capable of delivering 250 mA with
only 625 mV (typical) of input to output voltage
differential (V
OUT
= 2.8V). The output voltage tolerance
of the MCP1702 is typically ±0.4% at +25°C and ±3%
maximum over the operating junction temperature
range of -40°C to +125°C. Line regulation is ±0.1%
typical at +25°C.
Output voltages available for the MCP1702 range from
1.2V to 5.0V. The LDO output is stable when using only
1 µF of output capacitance. Ceramic, tantalum or
aluminum electrolytic capacitors can all be used for
input
and
output.
Overcurrent
limit
and
overtemperature shutdown provide a robust solution
for any application.
Package options include the SOT-23A, SOT-89-3, and
TO-92.
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Applications
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Battery-powered Devices
Battery-powered Alarm Circuits
Smoke Detectors
CO
2
Detectors
Pagers and Cellular Phones
Smart Battery Packs
Low Quiescent Current Voltage Reference
PDAs
Digital Cameras
Microcontroller Power
Solar-Powered Instruments
Consumer Products
Battery Powered Data Loggers
Package Types
3-Pin SOT-23A
V
IN
3
MCP1702
1
2
MCP1702
1
2
3
3-Pin SOT-89
V
IN
GND V
OUT
GND V
IN
V
OUT
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
• AN792,
“A Method to Determine How Much
Power a SOT-23 Can Dissipate in an Application”,
DS00792, Microchip Technology Inc., 2001
3-Pin TO-92
123
Bottom
View
GND V
IN
V
OUT
©
2007 Microchip Technology Inc.
DS22008B-page 1