RH1185AMK - Negative Regulator with Adjustable Current Limit
Features
(Note 1)
- Input Voltage..............................................................35V
- Input-Output Differential............................................30V
- 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
Typical Application
Description
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 previous LTC regulators, including power limiting and thermal shutdown.
Third Party Vendor Availability
Linear Technology partners with third party vendors who assemble and test packaged products with LTC RH Dice inside.
| Part Number | Description | SMD |
| MSK5930RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5931RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5932RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5933RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5934RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5935RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5936RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5937RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5938RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| MSK5939RH | 3A Dual Positive/Negative Fixed Voltage LDO Regulator | - |
| 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 | 5962-09201 |
| VRG8652 | 1A/3A Dual Positive/Negative Adj. LDO Reg, Surf Mount | 5962-09201 |
| VRG8653 | 3A Dual Positive/Negative Adj. Regulator, Thru Hole | 5962-10213 |
| VRG8654 | 3A Dual Positive/Negative Adj. Regulator, Surf Mount | 5962-10213 |
| VRG8663 | 3A Negative Adjustable Regulator | 5962-09207 |
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Applications
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Design Tools
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Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.