The LM2753 is a high-power switched capacitor voltage converter/flash LED driver. It can drive a flash LED with a pulsed current of 400mA at an input voltage of 3.6V. The device uses a switched capacitor doubler and provides a regulated 5V output (VOUT) over an input supply range of 3.0V to 5.5V. The switched output, IOUT, takes less than 10ns to turn on and provide maximum current to a Flash LED. Flash LED current is set via a ballast resistor. Continuous illumination current (Torch Mode) is programmed by connecting a resistor between IOUT and VOUT. This device uses only three small, low-cost ceramic capacitors. The LM2753 uses Pulse Frequency Modulation (PFM) regulation. Typical operating frequency is 725kHz. Under no-load conditions, the LM2753 operates on only 60µA. If the output is connected to ground, the charge pump stays in the gain of 1 which helps limit the input current to 300mA (typ.). The LM2753 is available in a 10-pin No Pullback Leadless Lead-frame Package: LLP-10.
The LM2753 is a switched‑capacitor voltage doubler that delivers a regulated 5 V output from an input range of 3.0 V to 5.5 V. It uses pulse‑frequency modulation (PFM) to achieve low quiescent current (≈60 pA) and fast turn‑on times (≈10 ns). The device is supplied in a 10‑pin leadless leadframe package (LLP‑10) measuring 3 mm × 3 mm × 0.8 mm.
Typical applications include camera flash LEDs, torch mode illumination, and backlighting for mobile‑phone keypads. The driver supports up to 200 mA continuous current and 400 mA pulsed flash current (up to 500 ms), with external ceramic capacitors for optimal performance.
| Input Voltage Range | 3.0 V to 5.5 V |
|---|---|
| Regulated Output Voltage | 5 V |
| Continuous Output Current | 200 mA (typ.) |
| Pulsed Flash Current | 400 mA up to 500 ms |
| Quiescent Current | 60 pA typ. |
| Package | 10‑pin LLP, 3 mm × 3 mm × 0.8 mm |
The device operates from 3.0 V to 5.5 V input.
It can provide up to 200 mA continuous current at the regulated 5 V output.
The typical quiescent current is about 60 pA.