Rainbow-electronics MAX1804 Manuel d'utilisateur télécharger pdf (Page 2)

MAX1804

External Four-Input Feedback Integrator for

Power Supplies

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= 0°C to +85°C, V

+ = 3.3V, V

ADJ

= 1.2V, V

OUT

= 2V, C

+ = 0.1µF, C

COMP

= 470pF. Typical values are at T

= +25°C, unless

otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

V+, IN1, IN2, IN3, IN4, OUT, ADJ, SHDN to GND...…-0.3V, +6V

COMP to GND ....................................................-0.3V, V+ +0.3V

Continuous Power Dissipation (T

= +70°C)

10-Pin µMAX (derate 8.3mW/°C above +70°C) ..........667mW

Operating Temperature Extended Range ...........-40°C to +85°C

Junction Temperature ..................…………………………+150°C

Storage Temperature Range.……...……………-65°C to +165°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER CONDITIONS

MIN TYP MAX

U N IT S

Supply Voltage Range (V+) 2.7 5.5 V

Shutdown Supply Current (V+) SHDN = GND

0.01

1 µA

Quiescent Supply Current (V+) SHDN = V+ 25 35 µA

UVLO Threshold, Rising 2.5 2.6 V

UVLO Threshold, Falling 2.3 2.4 V

INTEGRATOR INPUTS IN1–IN4

IN_ Voltage Range 0 5.5 V

IN_ Offset V

V+

= 2.7V to 5.5V -15 15

IN_ Scale Factor

ADJ

= 0.7V to 1.4V

3.988 4.000 4.016

V/V

IN_ Transconductance

IN_

= 4.75V to 4.85V, V

COMP

= 1.3V 12 30

µS

IN_ Bias Current

IN_

= 4.8V 1.5 2.7 µA

IN_ Shutdown Current

SHDN = GND 0.2 µA

IN_ Leakage Current

V+

= 0, V

SHDN

= 0 0.2 µA

IN_ Disable Threshold

ADJ

= 0.7V to 1.4V, V

ADJ

x 4, falling edge 87 90 93

IN_ Disable Threshold Hysteresis

ADJ

= 0.7V to 1.4V, rising edge 50

ADJ INPUT

ADJ Voltage Range

0.7 1.4 V

ADJ Bias Current

-20 20 nA

ADJ Shutdown Current

SHDN = GND 0.2 µA

ADJ Leakage Current

V+

= 0, V

SHDN

= 0 0.2 µA

COMP OUTPUT

COMP Source Current

COMP

= 1.3V, V

IN_

= 4.6V 1.6 2.0 2.4 µA

COMP Sink Current

COMP

= 1.3V, V

IN_

= 5.0V 1.6 2.0 2.4 µA

COMP Output Voltage Low

Sink 1µA, V

IN_

= 5.0V 0.2 V

COMP Output Voltage High

Source 1µA, V

IN_

= 4.6V 2.4 V

OUT OUTPUT

OUT Output Voltage Low

OUT

= 10 µA, V

IN_

= 4.6V 0.2 V

SHDN

= 0 0.1

V+

= 0 0.1

OUT Output Leakage Current

IN_

= 5.0V 0.1

µA

OUT Transconductance

COMP

= 1V to 2V 4 10 22 µS

1 2 3 4 5 6 7 ... 10 11

Power Supplies 1

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Rainbow-electronics MAX1804 Manuel d'utilisateur Page 2

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