MAX1982EUT

Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply


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Description

The MAX1982/MAX1983 are low-voltage, low-dropout linear regulators with an external bias supply input. The 5V bias supply drives the gate of the internal N-channel pass transistor, making these devices ideal for applications that require low-voltage outputs from low-voltage inputs. The MAX1982 delivers 1.2V (±3%) at 300mA from an input voltage of 1.25V to 5.5V. The MAX1983 delivers an adjustable output voltage from 0.8V to 2V.

The MAX1982/MAX1983 include a current-limit and thermal shutdown that protects the regulator in the event of a fault condition. Both devices are offered in a 6-pin SOT23 package and are specified over the extended (-40°C to +85°C) temperature range.
MAX1982, MAX1983: Typical Operating Circuit MAX1982, MAX1983: Typical Operating Circuit Enlarge+

Key Features

  • Low-Cost 1.2V, 300mA VID Supply
  • ±3% Output Voltage Accuracy
  • No Minimum Load Current Required
  • 1.25V to 5.5V Input Supply Voltage
  • 5V Input Bias Supply Voltage
  • Power-Good (PGOOD) Open-Drain Output with 1ms Rising Edge Propagation Delay (MAX1982)
  • Adjustable Output Voltage (MAX1983)
  • Low Supply Current (IBIAS + IIN = 165µA typ)
  • 5µA (max) Shutdown Supply Current
  • Tiny 6-Pin SOT23 Package

Applications/Uses

  • Cell Phones
  • Low-Dropout Regulators with External Bias Supply
  • Notebook Computers
  • PDAs
  • VID Power Supplies

See parametric specs for Linear Regulators (133)


Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
ICC
(µA)
Output Voltage Noise
(µV RMS)
Ref. BypassLow Batt./ Pwr. Fail OutPOK/Reset Thresh.
(V)
WatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxtypnomSee Notes
MAX1982 11.255.51.2--0.3530025065NoNoVout-9%NoNo-40 to +85
SOT23/6
$1.42 @1k
MAX1983 -0.82-
SOT23/6
$1.04 @1k

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.

MAX1982EVKIT: Evaluation Kit for the MAX1982, MAX1983
Request Reliability Report for: MAX1982EUT 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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