Rainbow-electronics MAX1672 Instrukcja Użytkownika Pobierz pdf (Strona 3)

MAX1672

Step-Up/Down DC-DC Converter

in QSOP Package

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= 6V, C

REF

= 0.1µF, C

OUT

= 4.7µF, T

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

= +25°C.) (Note 1)

Note 1: Specifications to -40°C are guaranteed by design.

ONA, ONB, 3/5; ILIM

= 0°C to +85°C

PGO

= 11V

PGO

= 2mA, V

PGI

= 1.2V

CONDITIONS

mV30Hysteresis

°C20

°C150Thermal Shutdown Threshold

Thermal Shutdown Hysteresis

V0.4Input Low Voltage

1.21 1.29

µA0.1 1

PGO Output Leakage

V0.1 0.4

PGO Output Low Voltage

UNITSMIN TYP MAXPARAMETER

ONA, ONB, 3/5; ILIM

V1.6Input High Voltage

__________________________________________Typical Operating Characteristics

= +25°C, unless otherwise noted.)

100

0.1 1 10 100 1000

EFFICIENCY vs. OUTPUT CURRENT

OUT

= 5V)

MAX1672-01

OUTPUT CURRENT (mA)

EFFICIENCY (%)

= 5V

= 3.6V

= 1.8V

= 0.9V

= 2.7V

100

0.1 1 10 100 1000

EFFICIENCY vs. OUTPUT CURRENT

OUT

= 3.3V)

MAX1672-02

OUTPUT CURRENT (mA)

EFFICIENCY (%)

= 3.3V

= 1.8V

= 0.9V

= 2.7V

100

0 4 52 31 6 7 8 9 10

EFFICIENCY vs. INPUT VOLTAGE

OUT

= 10mA)

MAX1672-03

INPUT VOLTAGE (V)

EFFICIENCY (%)

OUT

= 3.3V

OUT

= 5V

PGI

= 1.3V nA1 50PGI Input Bias Current

ONA, ONB, 3/5, ILIM

nA1 100Input Bias Current

= -40°C to +85°C

1.19 1.25 1.31

PGI Threshold Voltage

PGI/PGO COMPARATOR

LOGIC AND CONTROL INPUTS

1 2 3 4 5 6 7 8 ... 11 12

Step-Up/Down DC-DC Converter 1

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