MCP1727-3302E/MF New electronic ic chips LDO Voltage Regulators
1.5A CMOS LDO 3.3V DFN8
Features
• 1.5A 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, 3.0V,
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 (typical)
• Low Shutdown Supply Current: 0.1 µA (typical)
• Adjustable Delay on Power Good Output
• Short Circuit Current Limiting and Overtemperature Protection
• 3 mm x 3 mm DFN-8 and SOIC-8 Package Options
• Passes Automotive AEC-Q100 Reliability Testing
Applications
• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers
• Network Interface Cards
• Palmtop Computers
• 2.5V to 1.XV Regulators
Description
The MCP1727 is a 1.5A Low Dropout (LDO) linear regulator that
provides high current and low output voltages in a very small
package. The MCP1727 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, makes the MCP1727 a good choice for new
sub-1.8V output voltage LDO applications that have high current
demands.
The MCP1727 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
MCP1727 is typically less than 120 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 200 µs to 300 ms.
The overtemperature and short circuit current-limiting provide
additional protection for the LDO during system fault conditions.
