MAX1970 查看數據表（PDF） - Maxim Integrated

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MAX1970

Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-Down Regulator with POR and RSI/PFO

Maxim Integrated 

Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-

Down Regulator with POR and RSI/PFO

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VCC = VEN = 5V, VFB1 = VFB2 = 1.15V, R POR = 100kΩ to IN, RPFO = 100kΩ to IN, RSI = 0, CVCC = 0.1µF, CREF = 0.1µF,

FBSEL1 = unconnected, FBSEL2 = unconnected, TA = -40°C to +85°C.) (Note 2)

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

PFO (MAX1970 and MAX1972 Only)

PFO Trip Threshold

PFO Output Current, High

IN = VCC

PFO = IN

VCC rising

VCC falling

4.12

V

3.86

-1

1

µA

PFO Output Voltage, Low IPFO = 1mA, VIN = 4.3V

EN AND RSI (MAX1971 Only)

0.05

V

Logic Input Thresholds

RSI Input Resistance

IN = 2.6V to 5.5V

VIL

VIH

Internal pullup resistor to IN

0.4

V

1.6

5

20

kΩ

EN Logic Input Current

Logic Input at 0 or

5.5V, VIN = 5.5V

VIL

VIH

-1

1

µA

-1

1

Note 1: See the Output Voltage Selection section.

Note 2: Specifications to TA = -40°C are guaranteed by design and not production tested.

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