Key facts
- Brand
- Linear Technology
- Model
- LT1308
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-12
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Linear Technology LT1308 Boost Converter Datasheet
The LT1308 is a micropower, fixed‑frequency boost DC‑DC converter that operates from an input voltage as low as 1 V. It can deliver 5 V at 1 A from a single Li‑ion cell or 3.3 V at 300 mA from a single NiCd cell, with a low quiescent current of 100 µA and a shutdown current of only 3 µA. The device features a 600 kHz switching frequency, a low‑battery detector with a 200 mV reference, and a low‑voltage switch drop of 300 mV at 2 A.
The datasheet includes detailed electrical characteristics, pin descriptions, layout hints, and typical application circuits for GSM, DECT, and digital camera power supplies. Proper PCB layout is critical for performance, especially minimizing trace length to the input capacitor and keeping high‑current traces short.
Linear Technology LT1308 specifications
| Output Voltage (Li‑ion) | 5 V at 1 A |
|---|---|
| Output Voltage (NiCd) | 3.3 V at 300 mA |
| Quiescent Current (no load) | 100 µA |
| Shutdown Current | 3 µA |
| Switching Frequency | 600 kHz |
| Switch Voltage Drop (2 A) | 300 mV |
| Low‑Battery Reference | 200 mV |
| Minimum Input Voltage | 0.92 V |
| Input Voltage Range | 1 V – 6 V |
All Linear Technology LT1308 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current at 5 V?
The LT1308 can deliver up to 1 A at 5 V from a single Li‑ion cell.
What is the quiescent current when the device is not switching?
The no‑load quiescent current is 100 µA.
What is the maximum output voltage the devices can provide?
Both devices can boost the input voltage up to 34 V.
What is the fixed switching frequency of the converters?
The converters operate at a fixed frequency of about 600 kHz.