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1,000 pcs
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1000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The LT3571EUD#PBF is a current mode step-up DC/DC converter from Analog Devices, designed to bias avalanche photodiodes (APDs) in optical receivers with an output voltage up to 75V. It integrates a power switch, Schottky diode, and an APD current monitor, enabling a small solution footprint and low cost. The device operates as a constant-current or constant-voltage source, utilizing an inductor-based topology for noise-free input.
Key electrical specifications include a wide input voltage range of 2.7V to 20V, a 370mA internal switch, and an adjustable operating frequency from 250kHz to 2MHz. The integrated high-side APD current monitor offers better than 10% relative accuracy over four decades of dynamic range. It also features programmable current limit protection and a low shutdown current of less than 1μA.
This converter is available in a compact 16-lead QFN package with dimensions of 3mm x 3mm. The surface mountable design is suitable for applications requiring APD bias, PIN diode bias, and in optical receivers and modules, as well as fiber optic network equipment. The CTRL pin allows for digitally programmed output voltage adjustment without polarity inversion.
| Qty | Low | High |
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| 1+ | $1.08 | $1.08 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The minimum input voltage is 2.7V.
The output voltage is adjustable up to 75V.
The operating temperature range is -40°C to 125°C.
The switching frequency range is 250kHz to 2MHz.
The switch current rating is 370mA.
The LT3571EUD#PBF is available in a 16-WFQFN exposed pad package (16-QFN 3x3mm) for surface mount.
The shutdown current is less than 1μA.