MCP1825ST-3302E/AT datasheet, PDF

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MCP1825ST-3302E/AT: Description3.3 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PSFM5; CategoryPower/power management The power supply circuit; File Size632KB，38 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MCP1825ST-3302E/AT Overview

3.3 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PSFM5

MCP1825ST-3302E/AT Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Parts packaging code	SFM
package instruction	,
Contacts	3
Reach Compliance Code	compli
ECCN code	EAR99
Maximum drop-back voltage 1	0.35 V
Maximum input voltage	6 V
Minimum input voltage	2.1 V
JESD-30 code	R-PSFM-T5
JESD-609 code	e3
Number of functions	1
Number of terminals	5
Working temperatureTJ-Max	125 °C
Operating temperatureTJ-Mi	-40 °C
Maximum output current 1	0.5 A
Maximum output voltage 1	3.325 V
Minimum output voltage 1	3.275 V
Nominal output voltage 1	3.3 V
Package body material	PLASTIC/EPOXY
Package shape	RECTANGULAR
Package form	FLANGE MOUNT
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount	NO
technology	CMOS
Terminal surface	Matte Tin (Sn)
Terminal form	THROUGH-HOLE
Terminal location	SINGLE
Maximum time at peak reflow temperature	NOT SPECIFIED
Base Number Matches	1

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MCP1825/MCP1825S

500 mA, Low Voltage, Low Quiescent Current LDO Regulator

Features

• 500 mA Output Current Capability

• Input Operating Voltage Range: 2.1V to 6.0V

• Adjustable Output Voltage Range: 0.8V to 5.0V

(MCP1825 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: 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 (typical)

• Low Shutdown Supply Current: 0.1 µA (typical)

(MCP1825 only)

• Fixed Delay on Power Good Output

(MCP1825 only)

• Short Circuit Current Limiting and

Overtemperature Protection

• TO-263-5 (DDPAK-5), TO-220-5, SOT-223-5

Package Options (MCP1825).

• TO-263-3 (DDPAK-3), TO-220-3, SOT-223-3

Package Options (MCP1825S).

Description

The MCP1825/MCP1825S is a 500 mA Low Dropout

(LDO) linear regulator that provides high current and

low output voltages. The MCP1825 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 MCP1825 a good choice for new

sub-1.8V output voltage LDO applications that have

high current demands. The MCP1825S is a 3-pin fixed

voltage version.

The MCP1825/MCP1825S 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 MCP1825/MCP1825S 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 MCP1825

versions have a Shutdown (SHDN) pin. When shut

down, the quiescent current is reduced to less than

0.1 µA.

On the MCP1825 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.

Applications

•

High-Speed Driver Chipset Power

Networking Backplane Cards

Notebook Computers

Network Interface Cards

Palmtop Computers

2.5V to 1.XV Regulators

2008 Microchip Technology Inc.

DS22056B-page 1

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