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MCP1703

Low Quiescent Current LDO Regulator


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MCP1703 pdf
MCP1703
250 mA, 16V, Low Quiescent Current LDO Regulator
Features:
• 2.0 µA Typical Quiescent Current
• Input Operating Voltage Range: 2.7V to16.0V
• 250 mA Output Current for Output Voltages 2.5V
• 200 mA Output Current for Output Voltages < 2.5V
• Low Dropout Voltage, 625 mV typical @ 250 mA
for VR = 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 Ceramic Output
Capacitance
• 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 SOT23 Can Dissipate in an Application”,
DS00792, Microchip Technology Inc., 2001
Description:
The MCP1703 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 16.0V, 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 MCP1703 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 MCP1703 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 MCP1703 range from
1.2V to 5.5V. 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-223-3, SOT-23A,
2x3 DFN-8, and SOT-89-3.
Package Types
2x3 DFN-8 *
VOUT 1
8 VIN
NC 2 EP 7 NC
NC 3 9 6 NC
GND 4
5 NC
3-Pin SOT-23A
VIN
3
12
GND VOUT
3-Pin SOT-89
VIN
SOT-223-3
123
GND VIN VOUT
1 23
VIN GND VOUT
* Includes Exposed Thermal Pad (EP); see Table 3-1.
2010 Microchip Technology Inc.
DS22049E-page 1



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MCP1703 pdf
MCP1703
Functional Block Diagrams
VIN
MCP1703
Error Amplifier
Voltage
Reference
+VIN
-
+
Overcurrent
Overtemperature
VOUT
GND
Typical Application Circuits
9V
Battery
VIN
+ CIN
1 µF Ceramic
MCP1703
VOUT
VIN VIN
GND
VOUT
3.3V
IOUT
COUT
50 mA
1 µF Ceramic
DS22049E-page 2
2010 Microchip Technology Inc.



Part Number MCP1703
Description Low Quiescent Current LDO Regulator
Maker MICROCHIP - MICROCHIP
Total Page 28 Pages
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