MCP1812A View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP1812A

Ultra-Low Quiescent Current LDO Regulator for Long-Life Battery-Powered Applications

Microchip Technology 

MCP1811A/11B/12A/12B

1.0 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings†

Input Voltage, VIN.................................................................................................................................................... +6.0V

Maximum Voltage on Any Pin ..................................................................................................GND – 0.3V to VIN + 0.3V

Output Short-Circuit Duration...............................................................................................................Unlimited (Note 1)

Storage Temperature ............................................................................................................................. -55°C to +150°C

Maximum Junction Temperature, TJ .....................................................................................................................+125°C

Operating Junction Temperature, TJ .........................................................................................................-40°C to +85°C

ESD Protection on All Pins (HBM) ......................................................................................................................... ≥ 4 kV

† Notice: Stresses above those listed under “Absolute Maximum Ratings” 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 intended. Exposure to maximum rating conditions for

extended periods may affect device reliability.

AC/DC CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, VIN = VR + 1V (Note 2), IOUT = 1 mA,

CIN = COUT = 1 μF (MCP1811X) or 2.2 μF (MCP1812X) ceramic (X7R), TA = +25°C, SHDN > 1.4V.

Boldface type applies for junction temperatures TJ of -40°C to +85°C (Note 4).

Parameters

Sym.

Min. Typ. Max. Units

Conditions

Input Operating Voltage

VIN

1.8

—

5.5

V IOUT ≤ 50 mA

(MCP1811X, MCP1812X)

2.0

—

5.5

V IOUT ≤ 150 mA

(MCP1811X, MCP1812X)

Output Voltage Range

Input Quiescent Current

VOUT

IQ

2.4

—

5.5

V IOUT ≤ 300 mA (MCP1812X)

VR – 4% VR VR + 4%

(MCP1811X, MCP1812X) (Note 2)

—

250 500

nA IOUT = 0

(MCP1811X, MCP1812X)

Input Quiescent Current for

SHDN Mode

ISHDN

—

10

250

nA SHDN = GND (MCP1811A/12A)

—

5

125

nA SHDN = GND (MCP1811B/12B)

Ground Current

Maximum Continuous

Output Current

IGND

IOUT

—

90

110

—

180 220

150

—

—

300

—

—

μA IOUT = 0 to 150 mA (MCP1811X)

IOUT = 0 to 300 mA (MCP1812X)

mA MCP1811X

MCP1812X

Current Limit

ILIMIT

—

250 420

—

500 840

mA MCP1811X

MCP1812X

1: 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, JA).

Exceeding the maximum allowable power dissipation will cause the operating junction temperature to exceed

the maximum +85°C rating. Sustained junction temperatures above +85°C can impact device reliability.

2: VR is a nominal regulator output voltage. The minimum VIN must meet two conditions: VIN ≥ VIN(MIN) and

VIN ≥ VR + VDROPOUT(MAX).

3: 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.

4: 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.

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 = VR + 1V.

 2018-2019 Microchip Technology Inc.

DS20006088B-page 4

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