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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1804 Datasheet

28V LDO Regulator

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MCP1804 pdf
MCP1804
150 mA, 28V LDO Regulator With Shutdown
Features:
• 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
Applications:
• Cordless Phones, Wireless Communications
• PDAs, Notebook and Netbook Computers
• Digital Cameras
• Microcontroller Power
• Car Audio and Navigation Systems
• Home Appliances
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 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 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
SOT-223-3
(Top View)
123
VOUT GND VIN
SOT-23-5
VOUT
5
SHDN
4
(Top View)
123
VOUT GND VIN
SOT-89-5
VIN NC
54
123
VIN GND NC
(Top View)
123
VOUT GND SHDN
2009-2013 Microchip Technology Inc.
DS20002200D-page 1



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1804 Datasheet

28V LDO Regulator

No Preview Available !

MCP1804 pdf
MCP1804
Functional Block Diagram
VIN
*
SHDN
Shutdown
Control
Voltage
Reference
Thermal
Protection
-
+
Current Limiter
Error Amplifier
VOUT
*5-Pin Versions Only
Typical Application Circuit
GND
VIN
12V
Battery
+
CIN
1 µF
Ceramic
MCP1804
1 VIN VOUT 5
SOT-23
2 GND
3 NC SHDN 4
VOUT
5.0V @ 30 mA
COUT
1 µF Ceramic
DS20002200D-page 2
2009-2013 Microchip Technology Inc.



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1804 Datasheet

28V LDO Regulator

No Preview Available !

MCP1804 pdf
MCP1804
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Input Voltage ........................................................................................................................................................... +30V
Output Current (Continuous)............................................................................................................. PD/(VIN - VOUT) mA
Output Current (Peak).......................................................................................................................................... 300 mA
Output Voltage ...................................................................................................................... (VSS - 0.3V) to (VIN + 0.3V)
SHDN Voltage .................................................................................................................................. (VSS - 0.3V) to +30V
† 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.
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for VIN = VR + 2.0V, Note 1,
COUT = 1 µF (X7R), CIN = 1 µF (X7R), VSHDN = VIN, TA = +25°C
Parameters
Sym.
Min. Typ.
Max.
Units
Conditions
Input / Output Characteristics
Input Operating
Voltage
VIN
2.0 — 28.0
V Note 1
Input Quiescent
Current
Shutdown Current
Maximum Output
Current
Current Limiter
Output Short Circuit
Current
IQ
ISHDN
IOUT
ILIMIT
IOUT_SC
— 50 105
— 60 115
— 65 125
— 0.01 0.10
100 —
150 —
— 200
— 40
IL = 0 mA
µA 1.8V VOUT 5.0V
µA 5.1V VOUT 12.0V
µA 12.1V VOUT 18.0V
µA SHDN = 0V
VIN = VR + 3.0V
mA VOUT < 3.0V
mA VOUT 3.0V
mA
mA
Output Voltage
Regulation
VOUT VR - 2.0% VR VR + 2.0% V IOUT = 10 mA, Note 2
VOUT Temperature
Coefficient
TCVOUT
— ±100
— ppm/°C IOUT = 20 mA,
-40°C TA  85°C, Note 3
Note 1: The minimum VIN must meet one condition: VIN (VR + 2.0V).
2: VR is the nominal regulator output voltage with an input voltage of VIN = VR + 2.0V.
For example: VR = 1.8V, 2.5V, 3.0V, 3.3V, etc.
3: TCVOUT = (VOUT-HIGH - VOUT-LOW) * 106 / (VR * Temperature), VOUT-HIGH = highest voltage measured
over the temperature range. VOUT-LOW = lowest voltage measured over the temperature range.
4: Load regulation is measured at a constant junction temperature using low duty cycle pulse testing.
Changes in output voltage due to heating effects are determined using thermal regulation specification
TCVOUT.
5: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its
measured value with an applied input voltage of VR + 2.0V.
2009-2013 Microchip Technology Inc.
DS20002200D-page 3




Part Number MCP1804
Description 28V LDO Regulator
Maker Microchip Technology
Total Page 30 Pages
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