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SC445 - High Efficiency Integrated Driver

Description

The SC445 is a high-efficiency multiple string WLED driver with an integrated boost converter.

It operates over a wide input range from 4.5V to 27V and can sustain fast Vin transient up to 5V/µs.

It can drive up to forty WLEDs in 4 strings with current up to 150mA per string.

Features

  • High Efficiency Integrated Driver for 4-Strings of 150mA LEDs.

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Datasheet preview – SC445

Datasheet Details

Part number SC445
Manufacturer Semtech
File Size 301.87 KB
Description High Efficiency Integrated Driver
Datasheet download datasheet SC445 Datasheet
Additional preview pages of the SC445 datasheet.

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Full PDF Text Transcription

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SC445 POWER MANAGEMENT Features                  High Efficiency Integrated Driver for 4-Strings of 150mA LEDs Description The SC445 is a high-efficiency multiple string WLED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 27V and can sustain fast Vin transient up to 5V/µs. It can drive up to forty WLEDs in 4 strings with current up to 150mA per string. The stringto-string current matching is 2% typical, 3% maximum. The overall efficiency is greater than 90% due to the low current sense voltage and a low-impedance internal power switch. The wide PWM dimming range boasts a ratio of 500: 1. The 700KHz switching frequency enables the user to optimize the external component sizes for efficiency.
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