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MCP1702

250mA Low Quiescent Current LDO Regulator


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MCP1702 pdf
MCP1702
250 mA Low Quiescent Current LDO Regulator
Features:
• 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 (VOUT = 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
Applications:
• Battery-powered Devices
• Battery-powered Alarm Circuits
• Smoke Detectors
• CO2 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
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
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 (VOUT = 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.
Package Types
3-Pin SOT-23A
VIN
3
MCP1702
12
GND VOUT
3-Pin SOT-89
VIN
MCP1702
123
GND VIN VOUT
3-Pin TO-92
1 23
Bottom
View
GND VIN VOUT
2010 Microchip Technology Inc.
DS22008E-page 1



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MCP1702 pdf
MCP1702
Functional Block Diagrams
VIN
MCP1702
Error Amplifier
Voltage
Reference
+VIN
-
+
Overcurrent
Overtemperature
VOUT
GND
Typical Application Circuits
MCP1702
9V
Battery
VIN
+ CIN
1 µF Ceramic
VIN
VOUT
GND
VOUT
3.3V
IOUT
COUT
50 mA
1 µF Ceramic
DS22008E-page 2
2010 Microchip Technology Inc.



Part Number MCP1702
Description 250mA Low Quiescent Current LDO Regulator
Maker Microchip Technology - Microchip Technology
Total Page 26 Pages
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