LTC1044AIS8 Ver la hoja de datos (PDF) - Linear Technology

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Fabricante

LTC1044AIS8

12V CMOS Voltage Converter

Linear Technology 

LTC1044A

Electrical Characteristics The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. V+ = 5V, COSC = 0pF, unless otherwise noted.

LTC1044AC

LTC1044AI

SYMBOL PARAMETER

CONDITIONS

MIN TYP MAX MIN TYP MAX

IS

Supply Current

RL = ∞, Pins 1 and 7, No Connection

RV+L

=

=

∞,

3V

Pins

1

and

7,

No

Connection,

60 200

15

60 200

15

Minimum Supply Voltage RL = 10k

l 1.5

1.5

Maximum Supply Voltage

ROUT Output Resistance

fOSC

Oscillator Frequency

RL = 10k

IL = 20mA, fOSC = 5kHz

V+ = 2V, IL = 3mA, fOSC = 1kHz

V+ = 5V, (Note 3)

V+ = 2V

l

12

12

100

100

l

120

130

l

310

325

l5

5

l1

1

PEFF

Power Efficiency

RL = 5k, fOSC = 5kHz

95 98

95 98

Voltage Conversion Efficiency RL = ∞

97 99.9

97 99.9

Oscillator Sink or Source

Current

VOSC = 0V or V+

Pin 1 (BOOST) = 0V

Pin 1 (BOOST) = V+

l

3

3

l

20

20

UNITS

μA

μA

V

V

Ω

Ω

Ω

kHz

kHz

%

%

µA

µA

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: Connecting any input terminal to voltages greater than V+ or less

than ground may cause destructive latchup. It is recommended that no

inputs from sources operating from external supplies be applied prior to

power-up of the LTC1044A.

Note 3: fOSC is tested with COSC = 100pF to minimize the effects of test

fixture capacitance loading. The 0pF frequency is correlated to this 100pF

test point, and is intended to simulate the capacitance at pin 7 when the

device is plugged into a test socket and no external capacitor is used.

For more information www.linear.com/LTC1044A

1044afa

3

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