Key facts
- Brand
- Linear Technology
- Model
- LT1579
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
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Linear Technology LT1579 Dual Input Smart Battery Backup Regulator Datasheet
The LT1579 is a dual input, single output, low dropout regulator designed to provide an uninterruptible output voltage from two independent input voltage sources on a priority basis. The device incorporates all circuitry needed to switch smoothly and automatically between inputs, ensuring continuous power delivery even if one source fails or drops below the regulation threshold.
Key features include a maximum output current of 300mA with a dropout voltage as low as 0.4V, adjustable output voltages from 1.5V to 20V (or fixed options of 3V, 3.3V, and 5V), and internal protection against reverse battery and reverse current. The regulator includes two low-battery comparators and status flags to aid in power management applications such as dual battery systems.
Linear Technology LT1579 specifications
| Output Current | 300mA |
|---|---|
| Dropout Voltage (Nominal) | 0.4V |
| Quiescent Current | 50uA |
| Shutdown Quiescent Current | 7pA |
| Output Voltage Range (Adjustable) | 1.5V to 20V |
| Fixed Output Voltages | 3V, 3.3V and 5V |
| Operating Junction Temperature Range | 0°C to 125°C |
Source: Linear Technology LT1579 Dual Input Smart Battery Backup Regulator Datasheet
All Linear Technology LT1579 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current of the LT1579?
The device can supply up to 300mA of output current from either input.
From: Linear Technology LT1579 Dual Input Smart Battery Backup Regulator Datasheet
Does the LT1579 require external protection diodes?
No, the device does not need protection diodes as it includes internal reverse-battery and reverse-current protection.
From: Linear Technology LT1579 Dual Input Smart Battery Backup Regulator Datasheet
What is the maximum output current of the LT1579?
The LT1579 can supply up to 300 mA of output current.
What is the dropout voltage at 300 mA output?
The dropout voltage is 0.4 V when delivering 300 mA.