MCP1802 Microchip Technology, MCP1802 Datasheet
MCP1802
Manufacturer Part Number
MCP1802
Description
Low Quiescent Current LDO
Manufacturer
Microchip Technology
Datasheet
1.MCP1802.pdf
(24 pages)
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Features
• 300 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, 1.8V, 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
300 mA, High PSRR, Low Quiescent Current LDO
R
> 1.5V), ±30 mV (V
R
≤
1.5V)
Description
The MCP1802 is a family of CMOS low dropout (LDO)
voltage regulators that can deliver up to 300 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 MCP1802 is capable of delivering 100 mA with
only 200 mV (typical) of input to output voltage differen-
tial (V
MCP1802 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 out-
put capacitance. Ceramic, tantalum or aluminum elec-
trolytic 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 MCP1802 draws only 0.01 µA of current (typical).
The MCP1802 is available in a SOT-23-5 package.
Package Types
OUT
= 3.0V). The output voltage tolerance of the
MCP1802
V
V
OUT
5
1
IN
SOT-23-5
V
2
SS
SHDN
NC
4
3
DS22053A-page 1
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