LT1185

Features: n Low Resistance Pass Transistor: 0.25Ω Dropout Voltage: 0.75V at 3A ±1% Reference Voltage Accurate Programmable Current Limit Shutdown Capability Internal Reference Available Standard 5-Lead Packages Full Remote Sense Low Quiescent Current: 2.5mA Good High Frequency Ripple Rejecti...

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SeekIC No. : 004400412 Detail

LT1185: Features: n Low Resistance Pass Transistor: 0.25Ω Dropout Voltage: 0.75V at 3A ±1% Reference Voltage Accurate Programmable Current Limit Shutdown Capability Internal Reference Available Standa...

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Part Number:
LT1185
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/20

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Product Details

Description



Features:

n Low Resistance Pass Transistor: 0.25Ω
Dropout Voltage: 0.75V at 3A
±1% Reference Voltage
Accurate Programmable Current Limit
Shutdown Capability
Internal Reference Available
Standard 5-Lead Packages
Full Remote Sense
Low Quiescent Current: 2.5mA
Good High Frequency Ripple Rejection



Pinout

  Connection Diagram


Specifications

Input Voltage ..........................................................  35V
Input-Output Differential .........................................  30V
FB Voltage ................................................................  7V
REF Voltage ..............................................................  7V
Output Voltage ........................................................  30V
Output Reverse Voltage ............................................  2V
Operating Ambient Temperature Range
LT1185C ...................................................  0°C to 70°C
LT1185M ............................................. 55°C to 125°C
Operating Junction Temperature Range*
Control Section
LT1185C .................................................  0°C to 125°C
LT1185I .............................................  40°C to 125°C
LT1185M ...........................................  55°C to 150°C
Power Transistor Section
LT1185C .............................................  0°C to 150°C
LT1185I ..........................................  40°C to 150°C
LT1185M ........................................  55°C to 175°C
Storage Temperature Range ................  65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................  300°C



Description

The LT®1185 is a 3A low dropout regulator with adjustablecurrent limit and remote sense capability. It can be used asa positive output regulator with floating input or as astandard negative regulator with grounded input. Theoutput voltage range is 2.5V to 25V, with ±1% accuracy onthe internal reference voltage.

The LT1185 uses a saturation-limited NPN transistor asthe pass element. This device gives the linear dropoutcharacteristics of an FET pass element with significantlyless die area. High efficiency is maintained by using specialanti-saturation circuitry that adjusts base drive to trackload current. The "on resistance" is typically 0.25Ω.

Accurate current limit is programmed with a single 1/8Wexternal resistor, with a range of zero to three amperes. Asecond, fixed internal limit circuit prevents destructivecurrents if the programming current is accidentally over-ranged. Shutdown of the regulator output is guaranteedwhen the program current is less than 1µA, allowingexternal logic control of output voltage.

The LT1185 has all the protection features of previous LTCregulators, including power limiting and thermal shut-down. The 4-lead TO-3 package is specified for 55°C to150°C operation and the 5-lead TO-220 is specified over0°C to 125°C.




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