MAX20021 datasheet(2/16 Pages) MAXIM

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MAX20021/MAX20022

Automotive Quad, Low-Voltage

Step-Down DC-DC Converters

www.maximintegrated.com

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Electrical Characteristics

(VA = VPV1 = VPV2 = VPV3 = VPV4 = 5.0V; TA = TJ = -40ºC to +125ºC, unless otherwise noted. Typical values are at TA = +25ºC under

normal conditions, unless otherwise noted.) (Note 2)

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer

board. For detailed information on package thermal considerations, refer to

www.maximintegrated.com/thermal-tutorial.

PV_ to PGND_ .....................................................-0.3V to +6.0V

VA to GND............................................................-0.3V to +6.0V

OUTS_, EN_, PG_, SYNC, SEL to GND ......-0.3V to VA + 0.3V

PV_ to PV_...........................................................-0.3V to +0.3V

PGND_ to GND....................................................-0.3V to +0.3V

LX_ to PGND...............................................-1.0V to PV_ + 0.3V

LX_ Continuous RMS Current..............................................2.0A

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

Continuous Power Dissipation (TA = +70ºC)

TQFN (derate 28.6mW/ºC above +70ºC)..................2285mW

ESDHB.................................................................................±2kV

ESDMM..............................................................................±200V

Operating Temperature Range..........................-40ºC to +125ºC

Junction Temperature......................................................+150ºC

Storage Temperature Range.............................-65ºC to +150ºC

Lead Temperature (soldering, 10s) ................................. +300ºC

Soldering Temperature (reflow)....................................... +260ºC

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these

or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability.

Package Thermal Characteristics (Note 1)

TQFN

Junction-to-AmbientThermalResistance(θJA) ..............35°C/W

Junction-to-CaseThermalResistance(θJC).....................3°C/W

Absolute Maximum Ratings

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

GENERAL

Supply Voltage Range

VPV_

Fully operational

3.0

5.5

Supply Current

IPV0

No load, no switching,

VEN1 = VEN2 = VEN3 = VEN4 = VPV_

2.5

3.8

Shut-Off Current

IVPSD

VEN1 = VEN2 = VEN3 =

VEN4 = VGND

TA = +25°C

0.1

µA

TA = +125°C

Overvoltage Threshold

Rising

5.6

5.8

Hysteresis

0.1

Undervoltage Monitor Threshold

UVM option enabled

VPV_ falling

4.15

4.3

4.45

VPV_ hysteresis

0.1

UVLO Threshold

VPV_ falling

2.68

VPV_ rising

3.0

PWM Switching Frequency

fSW

Switching frequency = 2.2MHz

(see the Selector Guide

)

2.0

2.2

2.4

MHz

Switching frequency = 3.2MHz

(see the Selector Guide)

3.0

3.2

3.4

Spread Spectrum

Df/f

Spread-spectrum option = enabled

(see the Selector Guide)

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