MCP1801 Microchip Technology, MCP1801 Datasheet
MCP1801
Manufacturer Part Number
MCP1801
Description
Low Quiescent Current LDO
Manufacturer
Microchip Technology
Datasheet
1.MCP1801.pdf
(24 pages)
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Features
• 150 mA Maximum Output Current
• Low Drop Out Voltage, 200 mV typical @ 100 mA
• 25 µA Typical Quiescent Current
• 0.01 µA Typical Shutdown Current
• Input Operating Voltage Range: 2.0V to10.0V
• Standard Output Voltage Options:
• Output voltage accuracy:
• Stable with Ceramic output capacitors
• Current Limit Protection
• Shutdown pin
• High PSRR: 70 dB typical @ 10 kHz
Applications
• Battery-powered Devices
• Battery-powered Alarm Circuits
• Smoke Detectors
• CO
• Pagers and Cellular Phones
• Wireless Communications Equipment
• 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”,
• AN766, “Pin-Compatible CMOS Upgrades to
• AN792, “A Method to Determine How Much
© 2007 Microchip Technology Inc.
- 0.9V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V, 6.0V
- ±2% (V
DS00765, Microchip Technology Inc., 2002
BiPolar LDOs”, DS00766,
Microchip Technology Inc., 2002
Power a SOT23 Can Dissipate in an Application”,
DS00792, Microchip Technology Inc., 2001
2
Detectors
150 mA, High PSRR, Low Quiescent Current LDO
R
> 1.5V), ±30 mV (V
R
≤
1.5V)
Description
The MCP1801 is a family of CMOS low dropout (LDO)
voltage regulators that can deliver up to 150 mA of
current while consuming only 25 µA of quiescent
current (typical). The input operating range is specified
from 2.0V to 10.0V, making it an ideal choice for two to
six primary cell battery-powered applications, 9V alka-
line and one or two cell Li-Ion-powered applications.
The MCP1801 is capable of delivering 100 mA with
only 200 mV (typical) of input to output voltage differen-
tial (V
MCP1801 at +25°C is typically ±0.4% with a maximum
of ±2%. Line regulation is ±0.01% typical at +25°C.
The LDO output is stable with a minimum of 1 µF of
output capacitance. Ceramic, tantalum or aluminum
electrolytic capacitors can all be used for input and
output. Overcurrent limit with current foldback provides
short-circuit protection. A shutdown (SHDN) function
allows the output to be enabled or disabled. When
disabled, the MCP1801 draws only 0.01 µA of current
(typical).
The MCP1801 is available in a SOT-23-5 package.
Package Types
OUT
= 3.3V). The output voltage tolerance of the
MCP1801
V
V
OUT
5
1
IN
SOT-23-5
V
2
SS
SHDN
NC
4
3
DS22051A-page 1
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