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LM2758

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switched capacitor flash LED driver in DSBGA Package

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Data sheet

LM2758

ACTIVE
Data sheet Order now

Product details

Input voltage type DC/DC Topology Charge pump, current mode Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 2.7 Iout (max) (A) 0.7 Iq (typ) (mA) 4 Features Enable, True Shutdown Operating temperature range (°C) -40 to 85 Dimming method PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Charge pump, current mode Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 2.7 Iout (max) (A) 0.7 Iq (typ) (mA) 4 Features Enable, True Shutdown Operating temperature range (°C) -40 to 85 Dimming method PWM Number of channels 1 Rating Catalog
DSBGA (YZR) 12 3.9375 mm² 2.25 x 1.75
  • Up to 700-mA Output Current
  • 90% Peak Efficiency
  • Indicator, Torch, and Flash Modes
  • Time-out Circuitry Limits Flash Duration to 814 Milliseconds (Typical)
  • Adaptive 1× and 1.5× Gains for Maximum Efficiency
  • True Shutdown
  • Internal Soft-Start Eliminates Inrush Current
  • Ultra-Small Solution Size
    • No Inductor, Only 4 Capacitors and a Resistor Required
    • 2.022 mm × 1.527 mm × 0.6 mm Thin DSBGA package
  • Up to 700-mA Output Current
  • 90% Peak Efficiency
  • Indicator, Torch, and Flash Modes
  • Time-out Circuitry Limits Flash Duration to 814 Milliseconds (Typical)
  • Adaptive 1× and 1.5× Gains for Maximum Efficiency
  • True Shutdown
  • Internal Soft-Start Eliminates Inrush Current
  • Ultra-Small Solution Size
    • No Inductor, Only 4 Capacitors and a Resistor Required
    • 2.022 mm × 1.527 mm × 0.6 mm Thin DSBGA package

The LM2758 device is an integrated low-noise, high-current switched capacitor DC-DC converter with a regulated current sink. The device is capable of driving loads up to 700 mA from a single-cell Li-Ion battery. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

One external low-power resistor sets the desired current for indicator, torch, and flash modes. To protect the devices and the flash LED, internal time-out circuitry turns off the LM2758 in case of a faulty prolonged flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM2758 device is an integrated low-noise, high-current switched capacitor DC-DC converter with a regulated current sink. The device is capable of driving loads up to 700 mA from a single-cell Li-Ion battery. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

One external low-power resistor sets the desired current for indicator, torch, and flash modes. To protect the devices and the flash LED, internal time-out circuitry turns off the LM2758 in case of a faulty prolonged flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

For all available packages, see the orderable addendum at the end of the data sheet.
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* Data sheet LM2758 Switched Capacitor Flash LED Driver in DSBGA Package datasheet (Rev. E) PDF | HTML 03 May 2016
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
EVM User's guide AN-1695 LM2758 Flash LED Driver Evaluation Board (Rev. A) 30 Apr 2013

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