Microchip MCP1802 Bedienungsanleitung


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2010 Microchip Technology Inc. DS22053C-page 1
MCP1802
Features:
300 mA Maximum Output Current
Low Dropout 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:
- (0.9V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V, 6.0V)
Output voltage accuracy:
2% (V
R
> 1.5V), ±30 mV (V
R
1.5V)
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
2
Detectors
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”,
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 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
alkaline 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
differential (V
OUT
= 3.0V). The output voltage tolerance
of the 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
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 MCP1802 draws only 0.01 µA of current
(typical).
The MCP1802 is available in a SOT-23-5 package.
Package Types
SOT-23-5
123
54
V
OUT
NC
V
IN
SHDNV
SS
300 mA, High PSRR, Low Quiescent Current LDO


Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: MCP1802

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