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  Microchip Technology Semiconductor Electronic Components Datasheet  


MCP1701A

Low-Dropout Positive Voltage Regulator


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MCP1701A
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 (LDO):
- 120 mV (typical) @ 100 mA
- 380 mV (typical) @ 200 mA
• High Output Current: 250 mA (VOUT = 5.0V)
• High-Accuracy Output Voltage: ±2% (max)
• Low Temperature Drift: ±100 ppm/°C (typical)
• Excellent Line Regulation: 0.2%/V (typical)
• 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
• CO2 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
General Description
The MCP1701A is a family of CMOS low-dropout,
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 MCP1701A 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 VIN – VOUT
differentials. The MCP1701A offers improved startup
and transient response.
The MCP1701A 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 MCP1701A
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
3-Pin SOT-23A
VIN
3
3-Pin SOT-89
VIN
MCP1701A
MCP1701A
1
GND
2
VOUT
1 23
GND VIN VOUT
3-Pin TO-92
1 23
Bottom
View
GND VIN VOUT
Note: 3-Pin SOT-23A is equivalent to the EIAJ
SC-59.
© 2007 Microchip Technology Inc.
DS21991C-page 1



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MCP1701A
Functional Block Diagram
VIN
MCP1701A
Short-Circuit
Protection
VOUT
Voltage
Reference
GND
Typical Application Circuits
MCP1701A
VOUT
3.3V
IOUT
50 mA
GND
VOUT
COUT
1 µF Tantalum
VIN
9V Alkaline Battery
VIN
CIN
1 µF Tantalum
DS21991C-page 2
© 2007 Microchip Technology Inc.



Part Number MCP1701A
Description Low-Dropout Positive Voltage Regulator
Maker Microchip Technology - Microchip Technology
Total Page 22 Pages
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