MAX1792

500mA, Low-Dropout Linear Regulator in µMAX

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


Please check latest availability status for a specific part variant.

Description

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.
MAX1792: Typical Operating Circuit MAX1792: Typical Operating Circuit Enlarge+

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

Applications/Uses

  • Cell Phones/Cordless Phones
  • Docking Stations
  • Notebook Computers
  • Palmtop Computers
  • PDAs and Other Handheld Devices
  • USB Hubs
  • Wireless Base Stations
Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Output Voltage Noise
(µV RMS)
Ref. BypassLow Batt./ Pwr. Fail OutWatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxtypSee Notes
MAX1792 12.55.5
1.5
1.8
2.5
3.3
5
1.2550.13500500250115NoNoNoNo-40 to +85
µMAX-EP/8
$1.15 @1k
See All Linear Regulators (138)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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