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LM3550 - 5A Flash LED Driver

Datasheet Summary

Description

LM3550 is a low noise, switched capacitor DC/DC converter designed to operate as a current-limited and adjustable (up to 5.3V) super-capacitor charger.

Features

  • user selectable super-capacitor charge termination voltages and an optimal charge termination mode that maximizes flash energy efficiency by accounting for flash element losses. Additionally, the device provides one adjustable constant-current output (up to 200mA) and one NFET controller ideal for driving one or more high current LEDs either in a high power Flash mode or a low power Torch mode. The LM3550 can be configured to utilize a proprietary supercapacitor charging scheme (Optimal Mode), a.

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Datasheet Details

Part number LM3550
Manufacturer National Semiconductor Corporation
File Size 157.89 KB
Description 5A Flash LED Driver
Datasheet download datasheet LM3550 Datasheet
Additional preview pages of the LM3550 datasheet.

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Full PDF Text Transcription

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LM3550 PRODUCT BRIEF www.DataSheet4U.com May 1, 2009 LM3550 PRODUCT BRIEF 5A Flash LED Driver with Automatic Vf and ESR Detection for Mobile Camera Systems General Description LM3550 is a low noise, switched capacitor DC/DC converter designed to operate as a current-limited and adjustable (up to 5.3V) super-capacitor charger. LM3550 features user selectable super-capacitor charge termination voltages and an optimal charge termination mode that maximizes flash energy efficiency by accounting for flash element losses. Additionally, the device provides one adjustable constant-current output (up to 200mA) and one NFET controller ideal for driving one or more high current LEDs either in a high power Flash mode or a low power Torch mode.
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