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National Semiconductor LM2750 Low Noise Switched Capacitor Boost Regulator Datasheet
The LM2750 is a regulated switched‑capacitor doubler that provides a low‑noise 5 V output. It requires only three external ceramic capacitors (input, output, and flying) and operates with a fixed 1.7 MHz switching frequency, offering 85 % peak and 70 % average efficiency.
Typical applications include LED lighting, cellular phone SIM‑card power, audio‑amplifier supplies, and general‑purpose Li‑ion‑to‑5 V conversion. The device is supplied in a 10‑pin leadless lead‑frame package (LLP) with excellent thermal performance and includes soft‑start and active‑low shutdown features.
National Semiconductor LM2750 specifications
| Output Voltage (fixed) | 5.0 V |
|---|---|
| Adjustable Output Voltage Range | 3.8 V to 5.2 V |
| Input Voltage Range | 2.7 V to 5.6 V |
| Switching Frequency | 1.7 MHz (fixed) |
| Peak Efficiency | 85 % |
| Shutdown Supply Current | < 2 µA |
| Package | 10‑Pin Leadless Leadframe Package (LLP), 3 mm × 3 mm |
Source: National Semiconductor LM2750 Low Noise Switched Capacitor Boost Regulator Datasheet
All National Semiconductor LM2750 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the shutdown supply current of the LM2750?
The shutdown supply current is less than 2 µA.
From: National Semiconductor LM2750 Low Noise Switched Capacitor Boost Regulator Datasheet
What is the switching frequency of the LM2750?
The LM2750 operates at a fixed 1.7 MHz switching frequency.
From: National Semiconductor LM2750 Low Noise Switched Capacitor Boost Regulator Datasheet
What is the maximum output current of the LM2750‑5.0?
The LM2750‑5.0 can deliver up to 120 mA of output current when the input voltage is between 2.9 V and 5.6 V.
From: National Semiconductor LM2750 Low Noise Switched Capacitor Boost Regulator Datasheet
How many external components are required to use the LM2750?
Only three external components are needed: one input capacitor, one output capacitor, and one flying capacitor.
From: National Semiconductor LM2750 Low Noise Switched Capacitor Boost Regulator Datasheet