MAX1735

200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23

Ultra-Small, 200mA Negative Output LDO in SOT23


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Description

The MAX1735 negative-output, low-dropout linear regulator operates from a -2.5V to -6.5V input and delivers a guaranteed 200mA with a low 80mV dropout. The high-accuracy (±1%) output voltage is preset or can be adjusted from -1.25V to -5.5V with an external resistive voltage-divider.

An internal N-channel MOSFET allows for a low 85µA quiescent current virtually independent of the load, making this device ideal for battery-powered portable equipment, such as PDAs, mobile phones, cordless phones, and wireless data modems.

The device is available in several preset output voltage versions: -5.0V, -3.0V, and -2.5V. All versions offer a 1nA low-power shutdown mode, short-circuit protection, and thermal overload protection. The device is offered in a tiny 5-pin SOT23 package.
MAX1735: Typical Operating Circuit MAX1735: Typical Operating Circuit Enlarge+

Key Features

  • Guaranteed 200mA Output Current
  • Low 80mV Dropout Voltage at 200mA
  • Low 85µA Quiescent Supply Current
  • Low 1nA Current Shutdown Mode
  • Stable with 1µF COUT
  • PSRR > 60dB at 100Hz
  • Thermal Overload Protection
  • Short-Circuit Protection
  • -5.0V, -3.0V, or -2.5V Output Voltage or Adjustable (-1.25V to -5.5V)
  • Tiny SOT23-5 Package

Applications/Uses

  • Access Products
  • Cell Phones
  • Cordless Phones
  • Digital Cameras and Camcorders
  • Glucose Meters
  • Handhelds (GPS, POS Terminal)
  • HDD and RAID
  • PC Add-In Cards
  • Power Supplies
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
MAX1735 1-2.5-6.5
-5
-3
-2.5
-1.25-5.50.08200200180160NoNoNoNo-40 to +85
SOT23/5
$1.10 @1k
See All Linear Regulators (144)
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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