MIC23451 datasheet(4/28 Pages) MICROCHIP

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MIC23451

DS20006662A-page 4



2022 Microchip Technology Inc. and its subsidiaries

Output Voltage Load

Regulation

(VOUT1, VOUT2, VOUT3)

—

0.2

—

DCM: 20 mA < ILOAD < 130 mA,

VIN = 3.6V if VOUT(NOM) < 2.5V

—

0.4

—

DCM: 20 mA < ILOAD < 130 mA,

VIN = 5.0V if VOUT(NOM) > 2.5V

—

0.6

—

CCM: 200 mA < ILOAD < 500 mA,

VIN = 3.6V if VOUT(NOM) < 2.5V

—

0.3

—

CCM: 200 mA < ILOAD < 1A,

VIN = 5.0V if VOUT(NOM) > 2.5V

PWM Switch ON-Resistance

(RSW1, RSW2, RSW3)

RDS(ON)

—

0.217

—

ISW1, ISW2, ISW3 = +100 mA

(PMOS)

Maximum Frequency

fMAX

—

MHz IOUT1, IOUT2, IOUT3 = 120 mA

Soft-Start Time

tSS

—

150

—

µs

VOUT1, VOUT2, VOUT3 = 90%

Power Good Threshold

PGTH

% of VNOM

Power Good Hysteresis

PGHYS

—

Power Good Pull-Down

PGPD

—

200

VSNS = 90% VNOM, IPG = 1 mA

Enable Threshold

VEN

0.5

0.9

1.2

Turn-On

Enable Input Current

IEN

—

0.1

µA

—

Overtemperature Shutdown

TSHDN

—

160

—

°C

—

Overtemperature Shutdown

Hysteresis

TSHDN(HYS)

—

°C

—

Note 1: Specifications are for packaged products only.

TEMPERATURE SPECIFICATIONS

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Temperature Ranges

Junction Temperature Range

–40

—

+125

°C

Note 1

Storage Temperature Range

–65

—

+150

°C

—

Package Thermal Resistances

Thermal Resistance, FQFN 26-Ld

JA

—

°C/W —

JC

—

°C/W —

Note 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 device operating junction temperature to exceed the

maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability.

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Characteristics: TA = +25°C; VIN = VEN1 = VEN2 = VEN3 = 3.6V; L1 = L2 = L3 = 1 µH; COUT1 = COUT2 =

COUT3 = 4.7 µF, unless otherwise specified. Bold values valid for –40°C ≤ TJ ≤ +125°C, unless noted. (Note 1)

Parameter

Symbol

Min.

Typ.

Max.

Units

Conditions

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