RH1185

PRODUCTION

Negative Regulator with Adjustable Current Limit

Data Sheet (Rev. B) Product Selection Table

Part Models: 2
1ku List Price: Starting From $334.91

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Part Details

Absolute Maximum Ratings

Input Voltage: 35V
Input-Output Differential : 0V
FB Voltage: 7V
REF Voltage: 7V
Output Voltage: 30V
Output Reverse Voltage: 2V
Operating Ambient Temperature Range: –55°C to 125°C

Operating Junction Temperature Range:
- Control Section: –55°C to 150°C
- Power Transistor Section: –55°C to 175°C
Storage Temperature Range: –65°C to 150°C
Thermal Resistance Junction to Case:
- TO-3 Control Area: 1°C/W
- Power Transistor: 3°C/W
Lead Temperature (Soldering, 10 sec): 300°C

The RH1185AMK is a 3A low dropout regulator with adjustable current limit and remote sense capability. It can be used as a positive regulator with floating input or as a standard negative regulator with grounded input. The output voltage range is 2.5V to 25V, with ±1% accuracy on the internal reference voltage.

The RH1185AMK uses a saturation-limited NPN transistor as the pass element. This structure gives the linear dropout characteristics of a FET pass element with significantly less die area. High efficiency is maintained by using special anti-saturation circuitry that adjusts base drive to track load current.

The on-resistance is typically 0.25Ω. Accurate current limit is programmed with a single 1/8W external resistor, with a range of zero to three amperes. A second, fixed internal limit circuit prevents destructive currents if the programming current is accidentally overranged.

The RH1185AMK has all the protection features of our previous regulators, including power limiting and thermal shutdown.

Third Party Vendor Availability

Analog Devices partners with third party vendors who assemble and test packaged products with RH Dice inside.


Part Number	Description
MSK5940-5.0RH	3A Negative Fixed Voltage LDO Regulator
MSK5940-5.2RH	3A Negative Fixed Voltage LDO Regulator
MSK5940-10RH	3A Negative Fixed Voltage LDO Regulator
MSK5940-12RH	3A Negative Fixed Voltage LDO Regulator
MSK5940-15RH	3A Negative Fixed Voltage LDO Regulator
VRG8651	1A/3A Dual Positive/Negative Adj. LDO Reg, Thru Hole
VRG8652	1A/3A Dual Positive/Negative Adj. LDO Reg, Surf Mount
VRG8653	3A Dual Positive/Negative Adj. Regulator, Thru Hole
VRG8654	3A Dual Positive/Negative Adj. Regulator, Surf Mount
VRG863	3A Negative Adjustable Regulator

Part Models: 2
1ku List Price: Starting From $334.91

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
RH1185AMK	ROUND HEADER/METAL CAN	Material Declaration Reliablity Data	Ultra Librarian SamacSys
RH1185AMKDICE	CHIPS OR DIE	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

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RH1185

Part Details

Third Party Vendor Availability

Documentation

Data Sheet 1

Reliability Data 1

Controlled Drawings 2

Spec Notice 1

Solutions Bulletin & Brochure 1

High Dose Rate Radiation Reports 1

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