MAX1982, MAX1982EUT, MAX1983 Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply

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.

Key Features

Applications/Uses

	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 (I_BIAS + I_IN = 165µA typ)
	5µA (max) Shutdown Supply Current
	Tiny 6-Pin SOT23 Package

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

Key Specifications: Linear Regulators

Part Number

Regulators per Pkg.

Min. V_IN (V)

Max. V_IN (V)

Preset V_OUT (V)

Min. Adjustable V_OUT (V)

Max. Adjustable V_OUT (V)

Typ. V_DROPOUT@ Rated I_LOAD (V)

Rated I_LOAD (mA)

Max. I_CC (µA)

Low Battery/ Power Fail Output

POK/ Reset Output

POK/ Reset Output Type

Nominal POK/Reset Threshold (V)

Min. Reset Pulse Width (ms)

Watchdog

Reverse Battery Protection

Package

Operating Temp. Range (°C)

Price^**

MAX1982

1.25

5.5

1.2

0.35

300

250

Reset

Open Drain Active Low

Vout-9%

SOT-23/6

-40 to +85

$0.74 @ 1k

MAX1983

0.8

$0.74 @ 1k

See All Linear Regulators (141)

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 prices and delivery, please see the price and availability page or contact an authorized distributor.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX1982EUT.pdf MAX1982EUT.pdf

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Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX1982EUT

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1982EUT+

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1982EUT

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1982EUT-T

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1982EUT+T

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1983

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1983EUT+

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1983EUT

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1983EUT-T

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1983EUT+T

SOT-23;6 pin;
Dwg: 21-0058I (PDF)
Use pkgcode/variation: U6+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis