MIC33050 datasheet(4/22 Pages) MICROCHIP

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MIC33050

DS20006120B-page 4



2018 - 2022 Microchip Technology Inc.

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

Supply Voltage (VIN)....................................................................................................................................................+6V

Output Switch Voltage (VSW) ......................................................................................................................................+6V

Output Switch Current (ISW)..........................................................................................................................................2A

Logic Enable Input Voltage (VEN).................................................................................................................. –0.3V to VIN

ESD Rating (Note 1)................................................................................................................................... ESD Sensitive

Operating Ratings ‡

Supply Voltage (VIN)..................................................................................................................................+2.7V to +5.5V

† 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 sections of this specification is not intended. Exposure to maximum rating conditions for extended

periods may affect device reliability. Specifications are for packaged product only.

‡ Notice: The device is not guaranteed to function outside its operating ratings.

Note 1: Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series

with 100 pF.

ELECTRICAL CHARACTERISTICS

Electrical Characteristics: TA = 25°C, VIN = VEN = 3.6V; CFF = 560 pF; COUT = 4.7µF; IOUT = 20 mA unless

otherwise specified.

Bold values indicate –40°C ≤ TJ ≤ +125°C. Specification for packaged product only.

Parameter

Symbol

Min.

Typ.

Max. Units Conditions

Supply Voltage Range

VIN

2.7

—

5.5

—

Undervoltage Lockout

Threshold

UVLO

2.45

2.55

2.65

Turn-On

Undervoltage Lockout

Hysteresis

UVLOHYS

—

100

—

Quiescent Current

—

µA

IOUT = 0 mA, SNS > 1.2 * VOUT(NOM)

Shutdown Current

ISHDN

—

0.01

µA

VEN = 0V; VIN = 5.5V

Output Voltage Accuracy

ΔVOUT

–2.5

—

+2.5

VIN = 3.0V; ILOAD = 20 mA

Current Limit in PWM Mode

ILIM

0.65

1.7

VSNS = 0.9*VOUT(NOM)

Output Voltage Line

Regulation

ΔVO_LINE

—

0.5

—

%/V VIN = 3.0V to 5.5V, ILOAD = 20 mA

Output Voltage Load

Regulation

ΔVO_LOAD

—

0.3

—

20 mA < ILOAD < 500 mA

Feedback Voltage

VFB

390

400

410

VIN = 3.0V; IOUT = 20 mA

Maximum Duty Cycle

DMAX

—

VSNS ≤ VOUT(NOM)

PWM Switch On-Resistance

RDS(ON)P

—

0.45

—

ISW = 100 mA PMOS

RDS(ON)N

—

0.5

—

ISW = –100 mA NMOS

Switching Frequency

fSW

—

MHz IOUT = 120 mA

Soft Start Time

tSS

—

650

—

µs

VOUT = 90% of VOUT(NOM)

Enable Threshold

VENTH

0.5

0.8

1.2

Turn-On

Enable Hysteresis

VENHYS

—

Enable Input Current

IEN

—

0.1

µA

—

Overtemperature Shutdown

TSD

—

165

—

°C

—

Overtemperature Shutdown

Hysteresis

TSDHYS

—

°C

—

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