MCP1804
150 mA, 28V LDO Regulator With Shutdown
Features:
Description:
• 150 mA Output Current
• Low Dropout Voltage, 260 mV Typical @ 20 mA,
VR = 3.3V
• 50 µA Typical Quiescent Current
• 0.01 µA Typical Shutdown Current
• Input Operating Voltage Range: 2.0V to 28.0V
• Standard Output Voltage Options
(1.8V, 2.5V, 3.0V, 3.3V, 5.0V, 10.0V, 12.0V)
• Output Voltage Accuracy: ±2%
• Output Voltages from 1.8V to 18.0V in 0.1V
Increments are Available upon Request
• Stable with Ceramic Output Capacitors
• Current Limit Protection with Current Foldback
• Shutdown Pin
• High PSRR: 50 dB Typical @ 1 kHz
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.
Applications:
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Cordless Phones, Wireless Communications
PDAs, Notebook and Netbook Computers
Digital Cameras
Microcontroller Power
Car Audio and Navigation Systems
Home Appliances
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 are 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).
Package options include the 3-lead SOT-89, 3-lead
SOT-223, 5-lead SOT-23 and 5-lead SOT-89.
Package Types
SOT-89-3
(Top View)
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
SOT-223-3
(Top View)
1
2
3
VIN
VOUT GND
1
2
VOUT GND
3
VIN
SOT-89-5
SOT-23-5
VOUT
SHDN
VIN
NC
5
4
5
4
(Top View)
1
3
VIN
2009-2013 Microchip Technology Inc.
2
GND
NC
1
2
3
VOUT GND SHDN
DS20002200D-page 1
