admin 发表于 2010-4-17 14:11:44

MCP1804 Data Sheet

http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifMCP1804 Data Sheet


The MCP1804 is a family of CMOS low dropout (LDO) voltage regulators that can deliver up to 150 mA of current while consuming only 50 μA of quiescent current (typical, 1.8V ≤ VOUT ≤ 5.0V). The input operating range is specified from 2.0V to 28.0V. The MCP1804 is capable of delivering 100 mA with only 1300 mV (typical) of input to output voltage differential (VOUT = 3.3V). The output voltage tolerance of the MCP1804 at +25°C is a maximum of ±2%. Line regulation is ±0.15% typical at +25°C. The LDO input and output is stable with 0.1 μF of input and output capacitance. Ceramic, tantalum or aluminum electrolytic capacitors can all be used for input and output. Overcurrent limit with current foldback to 40 mA (typical) provides short-circuit protection. A shutdown (SHDN) function allows the output to be enabled or disabled. When disabled, the MCP1804 draws only 0.01 μA of current (typical).

Parameter NameValue
Max Input Voltage28
Typical Active Current (µA)50
Typical Dropout Voltage @ Max. lout (mV)300
Typical Output Voltage Accuracy (%)2
Output Current (mA)150

   Features
Input Operating Voltage Range: 2.0V to 28.0V
150 mA Output Current
50 μA Typical Quiescent Current
0.01 μA Typical Shutdown Current
Standard Output Voltage Options
(1.8V, 2.5V, 3.0V, 3.3V, 5.0V, 10.0V, 12.0V)
Output voltages from 1.8V to 18.0V in 0.1V
increments are available upon request
Output Voltage Accuracy: ±2%
Stable with Ceramic output capacitors down to 0.1 μF
Low Drop Out Voltage, 260 mV typical @ 20 mA, VR = 3.3V
Current Limit Protection With Current Foldback
High PSRR: 50 dB typical @ 1 kHz
Output Voltage Accuracy: ±2%
Package Options: SOT-23-5, SOT-89-3, SOT-89-5, and SOT-223-3


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