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MAX1802EHJ-T, MAX1803AEP, MAX1804

Table of contents:
Info of MAX1802EHJ-T
Info of MAX1803AEP
Info of MAX1804

MAX1802EHJ-T, MAX1803AEP, MAX1804 Selling Leads, Datasheet

MFG:MAXIM Package Cooled:13 D/C:09+

MAX1802EHJ-T, MAX1803AEP, MAX1804 Picture

MAX1802EHJ-T, MAX1803AEP, MAX1804 Datasheet download

Five Points

Part Number: MAX1802EHJ-T

MFG: MAXIM

Package Cooled: 13

D/C: 09+

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MAX1804 General Description

The MAX1804 feedback integrator is designed to improve voltage regulation in power-supply systems. The device corrects line- and load-regulation problems, and can be used to compensate for voltage drops in power-management distribution lines. The regulation set point is determined by an external reference voltage applied at the ADJ pin. The difference between that reference and MAX1804 feedback is integrated, and a correction current is applied to the voltage regulator's feedback.

The MAX1804's four inputs allow voltage monitoring in several local and remote locations to correct for distribution losses caused by long traces, connectors, and switches. This eliminates the wasteful practice of permanently adjusting the regulator's output voltage high enough to correct for worst-case voltage drops. This is especially helpful in systems where the load current varies widely and portions of the load are often shut down or disconnected (for example, in notebook computers).

If a load switch is opened and the output voltage sensed at one input falls, the MAX1804 automatically disables that input and adjusts the regulator's output voltage to the lowest of remaining active inputs. If all inputs are disabled, the OUT pin is in a high-impedance state and makes no output voltage correction.

When SHDN is low, the MAX1804 draws less than 1µA and its inputs and output are high impedance. The MAX1804 is available in a 10-pin µMAX package, about half the size of an 8-pin SOIC.

MAX1804 Maximum Ratings

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_A= +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

MAX1804 Features

High Precision (±1% max Error)
Low Power (25µA Supply Current)
Automatic Input Disable
Shutdown (1µA max Supply Current)
Inputs and Outputs High Impedance in Shutdown or When V+ = 0
+2.7V to +5.5V Supply Range
2.8V to 5.5V Regulation Adjust Range
Parallelable for More than Four Inputs
10-Pin µMAX Package

MAX1804 Typical Application

Remote Feedback Regulators
High-Accuracy Regulators
Desktop/Notebook Computers
Servers and Workstations
Subnotebooks and PDAs

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