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The LM2776DBVR is a switching regulator with a switching frequency of 2MHz that supports 200mA output current in a compact size SOT-23-6 envelope with the advantages of low power consumption, high efficiency, and wide voltage regulation range. LM2776DBVR has an efficiency of more than 90% at most loads and can provide battery powered systems that require high power negative power supplies with Ideal performance. LM2776DBVR is widely used in interface power supply, portable electronic devices, etc. Here are the details of the device confidence, including its features, applications, specific parameters, etc. If interested please continue to read on.
Feature: Symbol
Feature: Footprint
Feature: 3D Model
Block Diagram
| Profuct Attribute | Attribute Value |
| Category | Integrated Circuits (ICs),Power Management (PMIC),Power Management (PMIC) |
| Mfr | Texas Instruments |
| Product Status | Active |
| Function | Ratiometric |
| Output Configuration | Negative |
| Topology | Charge Pump |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.7V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | -Vin |
| Voltage - Output (Max) | - |
| Current - Output | 200mA |
| Frequency - Switching | 2MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40℃ ~ 85℃ (TA) |
| Mounting Type | Surface Mount |
| Package / Case | SOT-23-6 |
| Supplier Device Package | SOT-23-6 |
| Base Product Number | LM2776 |
Texas Instruments, a Texas-based semiconductor multinational corporation, is a global semiconductor company that designs, manufactures, tests and sells analog and embedded processing chips. Nearly 80,000 products from Texas Instruments help over 100,000 customers efficiently manage power, accurately sense and transmit data and provide the core control or processing in their designs, going into markets such as industrial, automotive, personal electronics, communications equipment and enterprise systems.
The LM2776DBVR has many advantages, some of which are briefly listed below. First, the LM2776DBVR has a thermal shutdown mechanism, so the device will not be damaged due to overheating. When the temperature reaches 150℃, the device will automatically switch to the off mode, and when the temperature drops to 130℃, the heat off will be automatically lifted. In addition, the LM2776DBVR contains an internal comparator that monitors the VIN voltage.
The replacement model for the LM2776DBVR is the LM2776DBVT. Both the LM2776DBVR and LM2776DBVT are high performance switching regulators, both providing 200mA of output current in a 6-pin SOT-23-6 package, and they both have a temperature range of -40°C to 85°C. In addition, both of them have high efficiency, with both operating at over 90% efficiency at most loads.
The input voltage of LM2776DBVR ranges from 2.7V to 5.5V and can provide a static current of 100uA. Its temperature ranges from -40℃ to 85℃. The temperature and voltage of the environment in which it is applied should be ensured that do not exceed the rated value of the switching regulator.
How many capacitors does the LM2776DBVR use to provide the output current?
The LM2776 uses three low-cost capacitors to provide up to 200 mA of output current.
Under what circumstances will LM2776DBVR appear thermal cycling?
When the LM2776 is current limiting, power dissipation in the device is likely to be quite high. In this event, thermal cycling is expected.
How to prevent thermal cycling in LM2776DBVR?
The thermal cycle is identified by the pulse output voltage and can be stopped by reducing internal power dissipation.
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