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MCP1726 bảng dữ liệu(PDF) 1 Page - Microchip Technology

tên linh kiện MCP1726
Giải thích chi tiết về linh kiện  1A, Low Voltage, Low Quiescent Current LDO Regulator
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MCP1726 bảng dữ liệu(HTML) 1 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
DS21936C-page 1
MCP1726
Features
• 1A Output Current Capability
• Input Operating Voltage Range: 2.3V to 6.0V
• Adjustable Output Voltage Range: 0.8V to 5.0V
• Standard Fixed Output Voltages:
- 0.8V, 1.2V, 1.8V, 2.5V, 3.3V, 5.0V
• Low Dropout Voltage: 220 mV Typical at 1A
• Typical Output Voltage Tolerance: 0.4%
• Stable with 1.0 µF Ceramic Output Capacitor
• Fast response to Load Transients
• Low Supply Current: 140 µA (typ)
• Low Shutdown Supply Current: 0.1 µA (typ)
• Adjustable Delay on Power Good Output
• Short Circuit Current Limiting and
Overtemperature Protection
• 3x3 DFN-8 and SOIC-8 Package Options
Applications
• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers
• Network Interface Cards
• Palmtop Computers
• 2.5V to 1.XV Regulators
Description
The MCP1726 is a 1A Low Dropout (LDO) linear
regulator that provides high current and low output
voltages in a very small package. The MCP1726
comes in a fixed (or adjustable) output voltage version,
with an output voltage range of 0.8V to 5.0V. The 1A
output current capability, combined with the low output
voltage capability, make the MCP1726 a good choice
for new sub-1.8V output voltage LDO applications that
have high current demands.
The MCP1726 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 MCP1726 is typically less than
140 µA over the entire input voltage range, making it
attractive for portable computing applications that
demand high output current. When shut down, the
quiescent current is reduced to less than 0.1 µA.
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). An
external capacitor can be used on the CDELAY pin to
adjust the delay from 1 ms to 300 ms.
The overtemperature and short circuit current-limiting
provide additional protection for the LDO during system
fault conditions.
Package Types
VIN
VIN
SHDN
GND
PWRGD
CDELAY
VOUT
VOUT
VIN
VIN
SHDN
GND
PWRGD
CDELAY
ADJ
VOUT
Adjustable (SOIC-8)
Fixed (SOIC-8)
VIN
VIN
SHDN
GND
PWRGD
CDELAY
VOUT
VOUT
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
Fixed (3x3 DFN)
VIN
VIN
SHDN
GND
PWRGD
CDELAY
VOUT
Adjustable (3x3 DFN)
ADJ
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1A, Low Voltage, Low Quiescent Current LDO
Regulator


Số phần tương tự - MCP1726

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