MCP1801

Features:

• 150 mA Maximum Output Current
• Low Drop Out Voltage, 200 mV typical @ 100 mA
• 25 A Typical Quiescent Current
• 0.01 A Typical Shutdown Current
• Input Operating Voltage Range: 2.0V to10.0V
• Standard Output Voltage Options:
- 0.9V, 1.2V, 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

Application

• Battery-powered Devices
• Battery-powered Alarm Circuits
• Smoke Detectors
• CO² 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

Pinout






Specifications

Parameter NameValueMax Input Voltage10Output Voltage (v)0.9, 1.2, 1.8, 2.5, 3.0, 3.3, 5.0, 6.0Typical Active Current (A)25Typical Dropout Voltage @ Max. lout (mV)250Typical Output Voltage Accuracy (%)2Output Capacitor TypeCeramic/Aluminum/Tantalum

Parameter Name	Value
Max Input Voltage	10
Output Voltage (v)	0.9, 1.2, 1.8, 2.5, 3.0, 3.3, 5.0, 6.0
Typical Active Current (A)	25
Typical Dropout Voltage @ Max. lout (mV)	250
Typical Output Voltage Accuracy (%)	2
Output Capacitor Type	Ceramic/Aluminum/Tantalum

Absolute Maximum Ratings †
Input Voltage ............................................................ +12V
Output Current (Continuous) ................ PD/(V_IN-V_OUT)mA
Output Current (Peak) ........................................... 500 mA
Output Voltage ........................... (V_SS-0.3V) to (V_IN+0.3V)
SHDNVoltage...............................(V_SS-0.3V) to (V_IN+0.3V)
Continuous Power Dissipation:
SOT-23-5 .............................................................. 250 mW

† Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Description

The MCP1801 is a 150 mA, high PSRR, ceramic output capacitor stable Low Dropout (LDO) voltage regulator with shutdown. MCP1801 provides a low noise, highly stable output due to its excellent transient response while consuming only 25 A of quiescent current. MCP1801's overcurrent limit with current foldback providesshort-circuit protection.

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 A 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 MCP1801 is capable of delivering 100 mA with only 200 mV (typical) of input to output voltage differential (V_OUT = 3.3V). The output voltage tolerance of the 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 F 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 A of current (typical).

The MCP1801 is available in a SOT-23-5 package.