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MCP1827_13 Datasheet, PDF (1/34 Pages) Microchip Technology – 1.5A, Low-Voltage, Low Quiescent Current LDO Regulator | |||
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MCP1827/MCP1827S
1.5A, Low-Voltage, Low Quiescent Current LDO Regulator
Features:
⢠1.5A Output Current Capability
⢠Input Operating Voltage Range: 2.3V to 6.0V
⢠Adjustable Output Voltage Range: 0.8V to 5.0V
(MCP1827 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: 330 mV Typical at 1.5A
⢠Typical Output Voltage Tolerance: 0.5%
⢠Stable with 1.0 µF Ceramic Output Capacitor
⢠Fast response to Load Transients
⢠Low Supply Current: 120 µA (typ)
⢠Low Shutdown Supply Current: 0.1 µA (typ)
(MCP1827 only)
⢠Fixed Delay on Power Good Output
(MCP1827 only)
⢠Short Circuit Current Limiting and
Overtemperature Protection
⢠5-Lead Plastic DDPAK, 5-Lead TO-220 Package
Options (MCP1827)
⢠3-Lead Plastic DDPAK, 3-Lead TO-220 Package
Options (MCP1827S)
Applications:
⢠High-Speed Driver Chipset Power
⢠Networking Backplane Cards
⢠Notebook Computers
⢠Network Interface Cards
⢠Palmtop Computers
⢠2.5V to 1.XV Regulators
Description:
The MCP1827/MCP1827S is a 1.5A Low Dropout
(LDO) linear regulator that provides high current and
low output voltages. The MCP1827 comes in a fixed or
adjustable output voltage version, with an output
voltage range of 0.8V to 5.0V. The 1.5A output current
capability, combined with the low output voltage
capability, make the MCP1827 a good choice for new
sub-1.8V output voltage LDO applications that have
high current demands. The MCP1827S is a 3-pin fixed
voltage version. The MCP1827/MCP1827S is based
upon the MCP1727 LDO device.
The MCP1827/MCP1827S 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 MCP1827/MCP1827S 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 MCP1827
versions have a Shutdown (SHDN) pin. When shut
down, the quiescent current is reduced to less than
0.1 µA.
On the MCP1827 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 200 µs (typical).
The overtemperature and short circuit current-limiting
provide additional protection for the LDO during system
Fault conditions.
Package Types
5-LD DDPAK 5-LD TO-220
Fixed/Adjustable
3-LD DDPAK 3-LD TO-220
MCP1827
1 23 45
MCP1827
12345
MCP1827S
123
MCP1827S
123
ï£ 2006-2013 Microchip Technology Inc.
DS22001D-page 1
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