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A DC linear voltage regulator that can function even in situations when the source and output voltages are extremely close is known as a low-dropout regulator, or LDO regulator. An LDO regulator is a voltage regulator that has a tiny voltage differential between its input and output. An LDO regulator is a kind of linear regulator with a low input-output voltage differential. LDO stands for low dropout.
| Product | Marketing Status | Configuration | VRRM(V) max. | IF(A) max. | VF (V) max | IFSM(A) max. | IR(uA) max. | trr (ns) max | TJ(°C) max. | TJ(°C) min. | ECCN(US) | Compliance | |
| BL7533-3L | Active | EAR99 | | ||||||||||
| BL7533E | Active | EAR99 | | ||||||||||
| BL7550-3L | Active | EAR99 | | ||||||||||
| BLA1117-1.5 (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-1.5 (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-1.5 (TO-251) | Active | EAR99 | |||||||||||
| BLA1117-1.5 (TO-252) | Active | EAR99 | |||||||||||
| BLA1117-1.8 (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-1.8 (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-1.8 (TO-251) | Active | EAR99 | |||||||||||
| BLA1117-1.8 (TO-252) | Active | EAR99 | |||||||||||
| BLA1117-2.5 (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-2.5 (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-2.5 (TO-251) | Active | EAR99 | |||||||||||
| BLA1117-2.5 (TO-252) | Active | EAR99 | |||||||||||
| BLA1117-2.85 (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-2.85 (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-2.85 (TO-251) | Active | EAR99 | |||||||||||
| BLA1117-2.85 (TO-252) | Active | EAR99 | |||||||||||
| BLA1117-3.3 (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-3.3 (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-3.3 (TO-251) | Active | EAR99 | |||||||||||
| BLA1117-3.3 (TO-252) | Active | EAR99 | |||||||||||
| BLA1117-5.0 (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-5.0 (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-5.0 (TO-251) | Active | EAR99 | |||||||||||
| BLA1117-5.0 (TO-252) | Active | EAR99 | |||||||||||
| BLA1117-ADJ (SOT-23) | Active | EAR99 | |||||||||||
| BLA1117-ADJ (SOT-89) | Active | EAR99 | |||||||||||
| BLA1117-ADJ (TO-251) | Active | EAR99 |
An easy, low-cost method of controlling an output voltage that receives electricity from an input voltage that is higher is to use low dropout regulators, or LDOs. They are simple to use and design with. An LDO datasheet's parameters are often highly understandable and obvious for the majority of applications.
Systems are shielded from excessive heat by the current limit function of the LDO. The output discharge circuit of the LDO aids in rapid discharge and lowers the output terminal voltage near the IC GND. The device's thermal shutdown feature keeps it from breaking down or deteriorating.
