MAX17020 datasheet(6/34 Pages) MAXIM

Part #	MAX17020

Description	Dual Quick-PWM Step-Down Controller with Low-Power LDO, RTC Regulator

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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6 / 34 page

Dual Quick-PWM Step-Down Controller

with Low-Power LDO, RTC Regulator

6

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, no load on LDO, RTC, OUT1, OUT2, and REF, VIN = 12V, VDD = VCC = VSECFB = 5V, VREFIN2 = 1.0V, BYP =

LDOREFIN = GND, ONLDO = IN, ON1 = ON2 = VCC, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

(Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GATE DRIVERS

DH_ Gate Driver On-Resistance

RDH

BST1 - LX1 and BST2 - LX2 forced to 5V

1.5

3.5

DL1, DL2; high state

2.2

4.5

DL_ Gate Driver On-Resistance

RDL

DL1, DL2; low state

0.6

1.5

DH_ Gate Driver Source/Sink

Current

IDH

DH1, DH2 forced to 2.5V,

BST1 - LX1 and BST2 - LX2 forced to 5V

2

A

DL_ Gate Driver Source Current

IDL

(SOURCE)

DL1, DL2 forced to 2.5V

1.7

A

DL_ Gate Driver Sink Current

IDL (SINK)

DL1, DL2 forced to 2.5V

3.3

A

Internal BST_ Switch

On-Resistance

RBST

IBST_ = 10mA, VDD = 5V

5

BST_ Leakage Current

IBST

VBST_ = 26V, TA = +25°C,

OUT2 and FB1 above regulation threshold

0.1

5

µA

INPUTS AND OUTPUTS

High

VCC -

0.4V

REF or open

1.6

3.0

TON Input Logic Levels

Low

0.4

V

High (forced-PWM)

VCC -

0.4V

Open (ultrasonic)

1.6

3.0

SKIP Input Logic Levels

Low (skip)

0.4

V

SKIP, TON Leakage Current

ISKIP, ITON VSKIP = VTON = 0 or 5V, TA = +25°C

-2

+2

µA

High (SMPS on)

2.4

ON_ Input Logic Levels

68mV hysteresis

Low (SMPS off)

0.8

V

ON_ Leakage Current

ION_

VON1 = VON2 = 0 or 5V, TA = +25°C

-2

+2

µA

High (SMPS on)

2.4

ONLDO Input Logic Levels

68mV hysteresis

Low (SMPS off)

0.8

V

ONLDO Leakage Current

IONLDO

VONLDO = 0 or 24V, TA = +25°C

-1

+1

µA

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