MCP1725-1502E/MC MICROCHIP [Microchip Technology], MCP1725-1502E/MC Datasheet

MCP1725-1502E/MC

Manufacturer Part Number

MCP1725-1502E/MC

Description

500 mA, Low Voltage, Low Quiescent Current LDO Regulator

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP1725-1502EMC.pdf (32 pages)

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Features

• 500 mA 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:

• Other Fixed Output Voltage Options Available

• Low Dropout Voltage: 210 mV Typical at 500 mA

• 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)

• Adjustable Delay on Power Good Output

• Short Circuit Current Limiting and

• 2x3 DFN-8 and SOIC-8 Package Options

Applications

• High-Speed Driver Chipset Power

• Networking Backplane Cards

• Notebook Computers

• Network Interface Cards

• Palmtop Computers

• Video Graphics Adapters

• 2.5V to 1.XV Regulators

Package Types

SHDN

- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V

Upon Request

Overtemperature Protection

GND

Adjustable (SOIC-8)

500 mA, Low Voltage, Low Quiescent Current LDO Regulator

ADJ

PWRGD

OUT

DELAY

SHDN

GND

Fixed (SOIC-8)

Sense

PWRGD

OUT

DELAY

SHDN

GND

Adjustable (2x3 DFN)

Description

The MCP1725 is a 500 mA Low Dropout (LDO) linear

regulator that provides high current and low output

voltages in a very small package. The MCP1725

comes in a fixed (or adjustable) output voltage version,

with an output voltage range of 0.8V to 5.0V. The

500 mA output current capability, combined with the

low output voltage capability, make the MCP1725 a

good choice for new sub-1.8V output voltage LDO

applications that have high current demands.

The MCP1725 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 MCP1725 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 C

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.

Note:

DFN tab is at ground potential.

MCP1725

ADJ

PWRGD

OUT

DELAY

SHDN

GND

Fixed (2x3 DFN)

DS22026A-page 1

DELAY

Sense

PWRGD

OUT

DELAY

pin to

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