MAX17031 datasheet(5/24 Pages) MAXIM

Part #	MAX17031

Description	Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies

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Manufacturer	MAXIM [Maxim Integrated Products]

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_______________________________________________________________________________________

5

Dual Quick-PWM Step-Down Controller with Low-

Power LDO and RTC Regulator for MAIN Supplies

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 2, no load on LDO5, RTC, OUT1, OUT2, and REF, VIN = 12V, VDD = VCC = VSKIP = 5V, ONLDO = RTC, ON1 = ON2

= VCC, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUTS AND OUTPUTS

Upper SKIP/PWM threshold falling edge,

33mV hysteresis

1.94

2.0

2.06

SKIP Input Thresholds

Lower PWM/ultrasonic threshold

0.4

1.6

V

SKIP Leakage Current

VSKIP = 0 or 5V, TA = +25°C

-1

+1

µA

High (SMPS on)

2.4

ON_ Input-Logic Levels

ONLDO, ON1, ON2

Low (SMPS off)

0.8

V

ON_ Leakage Current

VON1 = VON2 = VONLDO = 0 or 5V,

TA = +25°C

-2

+2

µA

VOUT1 = 5.3V

15

65

OUT_ Leakage Current

VON1 = VON2 = VCC

VOUT2 = 3.5V

5

30

µA

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 2, no load on LDO5, RTC, OUT1, OUT2, and REF, VIN = 12V, VDD = VCC = VSKIP = 5V, ONLDO = RTC, ON1 = ON2

= VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25

°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT SUPPLIES

IN Input Voltage Range

LDO5 in regulation

6

24

V

IN Standby Supply Current

VIN = 6V to 24V, ON1 = ON2 = GND,

ONLDO = RTC

200

µA

IN Shutdown Supply Current

VIN = 4.5V to 24V,

ON1 = ON2 = ONLDO = GND

70

µA

IN Supply Current

IIN

ON1 = ON2 = VCC, VSKIP = VCC,

VOUT1 = 5.3V, VOUT2 = 3.5V

0.2

mA

VCC Bias Supply Current

IVCC

ON1 = ON2 = VCC, VSKIP = VCC,

VOUT1 = 5.3V, VOUT2 = 3.5V

1.5

mA

PWM CONTROLLERS

OUT1 Output-Voltage Accuracy

VOUT1

VSKIP = 1.8V

4.90

5.10

V

OUT2 Output-Voltage Accuracy

VOUT2

VSKIP = 1.8V

3.234

3.366

V

DH1 On-Time

tON1

VOUT1 = 5.0V (Note 1)

895

1209

ns

DH2 On-Time

tON2

VOUT2 = 3.3V (Note 1)

833

1017

ns

Minimum Off-Time

tOFF(MIN)

(Note 1)

400

ns

Ultrasonic Operating Frequency

fSW(USONIC) VSKIP = GND

18

kHz

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