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MAX1792：500mA, Low-Dropout Linear Regulator in µMAX

0.5A LDO Has Only 130mV Dropout Voltage, Fits in 1.3W Power µMAX Package

The MAX1792 low-dropout linear regulator operates from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with low 130mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide) or can be adjusted from 1.25V to 5.0V with an external resistive divider. An internal PMOS pass transistor allows the low 80µA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers. Other features include an active-low open-drain reset output with a 4ms timeout period that indicates when the output is out of regulation, a 0.1µA shutdown mode, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 1.3W, 8-pin power-µMAX® package with a metal pad on the underside of the package.

Key Features Guaranteed 500mA Output Current Low 130mV Dropout at 500mA Up to ±1% Output Voltage Accuracy Preset at 1.5V, 1.8V, 2.5V, 3.3V, or 5.0V Adjustable from 1.25V to 5.0V Reset Output with 4ms Timeout Period Low 80µA Ground Current 0.1µA Shutdown Current Thermal Overload Protection Output Current Limit Tiny 1.3W Power-µMAX Package

MAX1792: Typical Operating Circuit Applications/Uses Cell Phones/Cordless Phones Docking Stations Notebook Computers Palmtop Computers PDAs and Other Handheld Devices USB Hubs Wireless Base Stations

DataSheet

Parametrics

Quality and Environmental Data

• MAX1792.pdf

Related Products

• MAX1793：Low-Dropout, Low-IQ, 1A Linear Regulator
• MAX603：5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear Regulators
• MAX604：5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear Regulators

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