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AMS1085CD
Adjustable Positive LDO Regulator, 1.25V Min, 13.7V Max, BIPolar,
AMS1085CD
Adjustable Positive LDO Regulator, 1.25V Min, 13.7V Max, BIPolar,
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Service & Packaging
Service & Packaging
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AMS1085CD DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
GENERAL DESCRIPTIONThe AMS1085 series of adjustable and fixed voltage regulators are designed to provide 3A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V at maximum output current, decreasing at lower load currents.On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.The AMS1085 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package, 3 and 2 lead TO-263 (Plastic DD) and TO-252 (D PAK) package.FEATURES• Three Terminal Adjustable or Fixed Voltages 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V• Output Current of 3A• Operates Down to 1V Dropout• Load Regulation: 0.1%• Line Regulation: 0.015%• TO-220, TO-263 and TO-252 packages availableAPPLICATIONS• High Efficiency Linear Regulators• Post Regulators for Switching Supplies• Microprocessor Supply• Battery Chargers• Constant Current Regulators• Notebook/Personal Computer Supplies• Portable Instrumentation
Key Features
- 1% accuracy for fixed output VOUT while the voltage is 1.5V,
- 1.8V, 2.5V, 3.3V, 5.0V and the adjustable output VOUT
- Low Dropout Voltage: 1.18V at 3A output current
- Current Limiting: 4.5A
- Load regulation : 0.1% typical (adjustable version)
- Line regulation : 0.015% typical (adjustable version)
- Temperature Range: 0°C to 125°C
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Rohs Code | Yes | Part Life Cycle Code | Contact Manufacturer |
| Reach Compliance Code | ECCN Code | EAR99 | |
| HTS Code ! | 8542.39.00.01 | Adjustability | ADJUSTABLE |
| Dropout Voltage1-Nom | 1.2 V | Line Regulation-Max (%/V) | 0.08 |
| Load Regulation-Max(%) | 0.4% | Number of Outputs | 1 |
| Number of Terminals | 3 | Operating Temperature TJ-Max | 125 °C |
| Operating Temperature TJ-Min | -40 °C | Output Current1-Max | 3 A |
| Output Voltage1-Max | 13.7 V | Output Voltage1-Min | 1.25 V |
| Package Body Material | PLASTIC/EPOXY | Package Equivalence Code | SMSIP3H,.38,90TB |
| Qualification Status ! | Not Qualified | Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount ! | YES | Technology | BIPOLAR |
| Terminal Pitch ! | 2.3 mm | Terminal Position | SINGLE |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is AMS1085CD?
The AMS1085CD is a low dropout (LDO) voltage regulator designed by Advanced Monolithic Systems. It is ideal for applications requiring a stable and adjustable output voltage with minimal dropout voltage, such as power management in automotive, industrial, and consumer electronics.
How Does AMS1085CD Work?
The AMS1085CD operates as a voltage regulator, providing a stable output voltage even when the input voltage fluctuates. It uses an internal reference voltage and feedback control to maintain the desired output voltage, and its low dropout voltage allows it to regulate the output even when the input voltage is only slightly higher than the output voltage.
How Many Pins does AMS1085CD have and What are the Functions of the Pinout Configuration?
The AMS1085CD is housed in a 3-pin TO-252 package. The pinout configuration includes:
- ADJ: Adjustable output pin.
- VOUT: Regulated output voltage pin.
- VIN: Input voltage pin.
What are the Pros and Cons of AMS1085CD?
Pros:
- Low Dropout Voltage: Maintains regulation with minimal input-to-output voltage differential.
- Adjustable Output: Allows flexibility in setting the output voltage as per application requirements.
- Thermal Overload Protection: Includes protection against excessive heat, enhancing system reliability.
- Simple Design: Requires minimal external components for stable operation.
Cons:
- Heat Dissipation: May require a heatsink for high power dissipation applications.
- Current Limiting: Has a maximum output current limit that needs to be considered in high-load scenarios.
Are There Any Equivalents/Alternatives to AMS1085CD for Recommendation?
- The LM1085 from Texas Instruments is an equivalent alternative to the AMS1085CD.
- Alternatives to the AMS1085CD include the L4940 from STMicroelectronics and the MIC2940 from Microchip Technology.
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