Key facts
- Brand
- Linear Technology
- Model
- LT1976B
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-09
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Linear Technology LT1976/LT1976B Step-Down Switching Regulator Datasheet
The LT1976 and LT1976B are monolithic step‑down switching regulators offering a wide input voltage range of 3.3 V to 60 V and up to 1.5 A peak switch current. They feature low quiescent current (100 µA for LT1976, 1.6 mA for LT1976B), a 200 kHz switching frequency, and built‑in protection such as load‑dump and shutdown control. The devices are supplied in a 16‑lead plastic TSSOP package with an exposed pad for thermal management.
Typical applications include automotive, industrial, and battery‑powered systems where efficient voltage conversion from 14 V or 42 V down to 3.3 V is required. The datasheet includes absolute maximum ratings, detailed electrical characteristics, pin descriptions, and typical performance curves to aid designers in implementing the regulators.
Linear Technology LT1976B specifications
| Input Voltage Range | 3.3 V to 60 V |
|---|---|
| Peak Switch Current (LT1976) | 1.5 A |
| Quiescent Current (LT1976) | 100 µA |
| Quiescent Current (LT1976B) | 1.6 mA |
| Switching Frequency | 200 kHz |
| Maximum Duty Cycle | 92 % |
| Operating Temperature Range | -40 °C to 125 °C |
| Package | 16‑lead plastic TSSOP |
Source: Linear Technology LT1976/LT1976B Step-Down Switching Regulator Datasheet
All Linear Technology LT1976B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the switching frequency of the LT1976?
The LT1976 operates at a switching frequency of 200 kHz.
From: Linear Technology LT1976/LT1976B Step-Down Switching Regulator Datasheet
What is the quiescent current of the LT1976B?
The LT1976B has a quiescent current of 1.6 mA.
From: Linear Technology LT1976/LT1976B Step-Down Switching Regulator Datasheet
What is the input voltage range of the LT1976/LT1976B?
The regulator operates from 3.3 V up to 60 V input.
How much quiescent current does the LT1976 draw?
The LT1976 has a typical quiescent current of 100 µA.