MCP1827 datasheet(6/32 Pages) MICROCHIP

Part #	MCP1827

Description	1.5A, Low Voltage, Low Quiescent Current LDO Regulator

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Manufacturer	MICROCHIP [Microchip Technology]

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MCP1827/MCP1827S

DS22001C-page 6

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

VIN....................................................................................6.5V

Maximum Voltage on Any Pin .. (GND – 0.3V) to (VDD + 0.3)V

Maximum Power Dissipation......... Internally-Limited (Note 6)

Output Short Circuit Duration ................................Continuous

Storage temperature .....................................-65°C to +150°C

Maximum Junction Temperature, TJ ...........................+150°C

ESD protection on all pins (HBM/MM)

........... ≥ 2kV; ≥ 200V

† Notice: Stresses above those listed under “Maximum Rat-

ings” may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operational listings of this specification is not implied. Expo-

sure to maximum rating conditions for extended periods may

affect device reliability.

AC/DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, VIN = VOUT(MAX) + VDROPOUT(MAX) Note 1, VR=1.8V for Adjustable Output,

IOUT = 1 mA, CIN = COUT = 4.7 µF (X7R Ceramic), TA = +25°C. Boldface type applies for junction temperatures, TJ (Note 7) of

-40°C to +125°C

Parameters

Sym

Min

Typ

Max

Units

Conditions

Input Operating Voltage

VIN

2.3

6.0

V

Note 1

Input Quiescent Current

Iq

—

120

220

µA

IL = 0 mA, VIN = Note 1,

VOUT = 0.8V to 5.0V

Input Quiescent Current for

SHDN Mode

ISHDN

—0.1

3

µA

SHDN = GND

Maximum Output Current

IOUT

1.5

——

A

VIN = 2.3V to 6.0V

VR = 0.8V to 5.0V, Note 1

Line Regulation

ΔVOUT/

(VOUT x ΔVIN)

—0.05

0.16

%/V

(Note 1)

≤ VIN ≤ 6V

Load Regulation

ΔVOUT/VOUT

-1.0

±0.5

1.0

%IOUT = 1 mA to 1.5A,

VIN = Note 1, (Note 4)

Output Short Circuit Current

IOUT_SC

—2.2

—

A

VIN = Note 1, RLOAD <0.1Ω,

Peak Current

Adjust Pin Characteristics (Adjustable Output Only)

Adjust Pin Reference Voltage

VADJ

0.402

0.410

0.418

VVIN = 2.3V to VIN =6.0V,

IOUT = 1 mA

Adjust Pin Leakage Current

IADJ

-10

±0.01

+10

nA

VIN = 6.0V, VADJ =0Vto 6V

Adjust Temperature Coefficient

TCVOUT

—40

—

ppm/°C Note 3

Fixed-Output Characteristics (Fixed Output Only)

Note 1:

The minimum VIN must meet two conditions: VIN ≥ 2.3V and VIN ≥ VOUT(MAX) + VDROPOUT(MAX).

2:

VR is the nominal regulator output voltage for the fixed cases. VR = 1.2V, 1.8V, etc. VR is the desired set point output

voltage for the adjustable cases. VR = VADJ * ((R1/R2)+1). Figure 4-1.

3:

TCVOUT = (VOUT-HIGH – VOUT-LOW) *106 / (VR * ΔTemperature). VOUT-HIGH is the highest voltage measured over the

temperature range. VOUT-LOW is the lowest voltage measured over the temperature range.

4:

Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is

tested over a load range from 1 mA to the maximum specified output current.

5:

Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its

nominal value that was measured with an input voltage of VIN = VOUTMAX + VDROPOUT(MAX).

6:

The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction

temperature and the thermal resistance from junction to air. (i.e., TA, TJ, θJA). Exceeding the maximum allowable power

dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained

junction temperatures above 150°C can impact device reliability.

7:

The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the

desired junction temperature. The test time is small enough such that the rise in the junction temperature over the

ambient temperature is not significant.

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