Microchip MCP1824 Manual de Usario

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2007-2023 Microchip Technology Inc. and its subsidiaries DS20002070B-page 1
MCP1824/MCP1824S
Features
Passes Automotive AEC-Q100 Reliability Testing
300 mA Output Current Capability
Input Operating Voltage Range: 2.1V to 6.0V
Adjustable Output Voltage Range: 0.8V to 5.0V
(MCP1824 only)
Standard Fixed Output Voltages:
- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
Other Fixed Output Voltage Options Available
Upon Request
Low Dropout Voltage: 200 mV Typical at 300 mA
Typical Output Voltage Tolerance: 0.4%
Stable with 1.0 µF Ceramic Output Capacitor
Fast Response to Load Transients
Low Supply Current: 120 µA (typical)
Low Shutdown Supply Current: 0.1 µA (typical)
(MCP1824 only)
Fixed Delay on Power Good Output
(MCP1824 only)
Short Circuit Current Limiting and
Overtemperature Protection
5-Lead Plastic SOT-223, SOT-23 Package
Options (MCP1824)
3-Lead Plastic SOT-223 Package Option
(MCP1824S)
Applications
High-Speed Driver Chipset Power
Networking Backplane Cards
Notebook Computers
Network Interface Cards
Palmtop Computers
2.5V to 1.XV Regulators
Description
The MCP1824/MCP1824S is a 300 mA Low Dropout
(LDO) linear regulator that provides high current and
low output voltages. The MCP1824 comes in a fixed or
adjustable output voltage version, with an output
voltage range of 0.8V to 5.0V. The 300 mA output
current capability, combined with the low output voltage
capability, make the MCP1824 a good choice for new
sub-1.8V output voltage LDO applications that have
high current demands. The MCP1824S is a 3-pin fixed
voltage version.
The MCP1824/MCP1824S is stable using ceramic
output capacitors that inherently provide lower output
noise and reduce the size and cost of the entire
regulator solution. Only 1 µF of output capacitance is
needed to stabilize the LDO.
Using CMOS construction, the quiescent current
consumed by the MCP1824/MCP1824S is typically
less than 120 µA over the entire input voltage range,
making it attractive for portable computing applications
that demand high output current. The MCP1824
versions have a Shutdown (SHDN) pin. When shut
down, the quiescent current is reduced to less than
0.1 µA.
On the MCP1824 fixed output versions, the scaled-
down output voltage is internally monitored and a
power good (PWRGD) output is provided when the
output is within 92% of regulation (typical). The
PWRGD delay is internally fixed at 110 µs (typical).
The overtemperature and short circuit current-limiting
provide additional protection for the LDO during system
fault conditions.
300 mA, Low Voltage, Low Quiescent Current LDO Regulator
MCP1824/MCP1824S
DS20002070B-page 2
2007-2023 Microchip Technology Inc. and its subsidiaries
Package Types
MCP1824
1 2 345
6
SOT-223-5
SOT-223 SOT-23
Pin Fixed Adjustable Fixed Adjustable
1 SHDN SHDN VIN VIN
2 VIN VIN GND (TAB) GND (TAB)
3 GND (TAB) GND (TAB) SHDN SHDN
4 VOUT VOUT PWRGD ADJ
5 PWRGD ADJ VOUT VOUT
6 GND (TAB) GND (TAB)
12 3
SOT-223-3
4
MCP1824S
Pin SOT-223
1 VIN
2 GND (TAB)
3 VOUT
4 GND (TAB)
Fixed/Adjustable
SOT-23-5
1 2 3
5 4
2007-2023 Microchip Technology Inc. and its subsidiaries DS20002070B-page 3
MCP1824/MCP1824S
Typical Applications
MCP1824 Adjustable Output Voltage
MCP1824 Fixed Output Voltage
VOUT = 1.8V @ 300 mA
VIN = 2.3V to 2.8V
On
Off
1 µF
100 k
4.7 µF
C1C2
R1
SHDN
VIN
GND
VOUT
PWRGD
20 k
R2
VOUT = 1.2V @ 300 mA
VIN = 2.1V to 2.8V
On
Off
1 µF
40 k
4.7 µF
C1C2
R1
SHDN
VIN
GND
VOUT
VADJ
1
1

Especificaciones del producto

Marca: Microchip
Categoría: No categorizado
Modelo: MCP1824

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