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Linear Regulators

Linear Controllers

Unitrode Part Number

UC3832

UC3833

UC3834

UC3835

UC3836

UCC3837 +

Type of Output

 Positive Adjustable

 Positive Adjustable

Positive/Negative Adjustable

5V Fixed

Positive Adjustable

Positive Adjustable

Maximum Input Voltage

36V

 36V

40V

40V

40V

12V

Minimum Output Voltage

2.0V

2.0V

+1.5V/-2.0V

2.5V

1.5V

Output Drive

300mA

300mA

350mA

500mA

500mA

1.5mA

Type of Short Circuit Limit

Duty Cycle

Duty Cycle

Foldback

Foldback

Foldback

Duty Cycle

Reference Voltage Accuracy

2%

2%

3%/4%

2%

2%

2%

Special Features Multiple Pins Accessible 8-Pin Package Built in Rsense Built in Rsense Internal Charge Pump Direct N-FET Drive
Application/Design Note DN-61, U-116, U-152 DN-32, DN-61, U-116, U-152 U-95

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Linear Regulators

Unitrode Part Number

UCC381 +

UCC383 +

UCC384 +

UCC386 +

UCC387 +

UCC388 +

Output Voltage

 3.3, 5, ADJ

 3.3, 5, ADJ

5, 12, ADJ

3.3, 5, ADJ

3.3, 5, ADJ

3.3, 5, ADJ

Dropout Voltage

0.45V at 1A

 0.45V at 3A

0.2V at 500mA

0.2V at 200mA

0.2V at 200mA

0.2V at 200mA

Quiescent Current

400mA

400mA

240mA

10mA

10mA

10mA

Maximum Input Voltage

9V

9V

-16V

9V

9V

9V

Shutdown Current

10mA

10mA

20mA

2mA

2mA

2mA

Voltage Tolerance

2.5%

 2.5%

2.5%

1.5%

1.5%

1.5%

Line Regulation

0.01%/V

0.01%/V

0.01%/V

0.08%/V

0.08%/V

0.08%/V

Load Regulation

0.1%, IOUT = 0 to 1A

0.2%, IOUT = 10mA to 3A

0.1%, IOUT = 0 to 500mA

0.15%, IOUT = 1mA to 200mA

0.15%, IOUT = 1mA to 200mA

0.15%, IOUT = 1mA to 200mA

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Low Dropout Linear Regulators

Unitrode Part Number

UC382-1

UC382-2

UC382-3

UC382-ADJ

UC385-1 +

UC385-2 +

UC385-3 +

UC385-ADJ +

Output Voltage

1.5V

2.1V

2.5V

1.2V/ Adjustable

1.5V

2.1V

2.5V

1.2V/ Adjustable

Dropout Voltage

450mV at 3A

450mV at 3A

450mV at 3A

450mV at 3A

450mV at 5A

450mV at 5A

450mV at 5A

450mV at 5A

Output Voltage Accuracy

1%

1%

1%

1%

1%

1%

1%

1%

Maximum Input Voltage

7.5V

7.5V

7.5V

7.5V

7.5V

7.5V

7.5V

7.5V

Special Features

Fast Transient Response

Fast Transient Response Fast Transient Response Fast
Transient Response
Fast Transient Response Fast Transient Response Fast Transient Response Fast
Transient Response

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Special Function Circuits

Unitrode Part Number

UCC3831 +

UC560 +

Part Name

Universal Serial Bus Power Controller

SCSI Single Ended Source/Sink Regulator

Description

Powers Four 5V Peripherals and One 3.3V USB Controller

 18 and 27 Line SCSI Termination Applications

+ New Product

Last updatd: 06/26/98