Rainbow-electronics MAX1730 Manual de usuario descargar pdf (Pagina 3)

MAX1730

50mA Regulated Step-Down Charge Pump

for 1.8V or 1.9V Logic

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS

= +3.6V, FB = GND, SHDN = IN, T

= -40°C to +85°C, unless otherwise noted.) (Note 1)

Note 1: Specifications to -40°C are guaranteed by design, not production tested.

SHDN = IN or GND

= 2.7V to 5.5V

Falling edge (100mV hysteresis)

FB = GND

OUT

= GND

= 4.2V, SHDN = GND

SHDN = IN

OUT forced to 1.8V, V

= 1.8V to 5.5V,

SHDN = GND

= 2.7V to 5.5V,

OUT

= 0 to 50mA

CONDITIONS

FB = GND

FB = IN

µA

-1 1

SHDN

Shutdown Logic Input Current

0.6

SHDN Logic Input Low Voltage

1.4

SHDN Logic Input High Voltage

3.1 3.35

Transition Voltage

Rising)

MHz

1.5 2.5

fOscillator Frequency

1.746 1.854

OUT

Output Voltage

2.3 2.6

2.7 5.5

Input Voltage Range

Input Undervoltage Lockout

125

Output Short-Circuit Current

µA

Shutdown Supply Current

µA

150

No-Load Supply Current

µA

Output Leakage Current

1.843 1.957

From 1:1 to 2:3

UNITSMIN MAXSYMBOLPARAMETER

From 2:3 to 1:2

4.00 4.30

1 2 3 4 5 6 7 8

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Rainbow-electronics MAX1730 Manual de usuario Pagina 3

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