Diodes Incorporated

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ZXSC380 (Not Recommended for new design)

NRND = Not Recommended for New Design

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The ZXSC380 is a highly integrated single or multi cell LED driver for applications where step-up voltage conversion from a very low input voltage is required. These applications mainly operate from 1.5V or 1.2V cells. The IC generates constant current pulses that are ideal for driving single or multiple LEDs over a wide range of operating voltages. The ZXSC380 provides a simple to use, low cost, space saving and easy to layout solutions. The ZXSC380 uses a PFM control technique to drive an internal switching transistor which has a low saturation resistance. This ensures high efficiency, even for input voltages as low as 1V. The IC can start up under full load and operates down to an input voltage of only 0.9V typical. The ZXSC380 is offered in the space saving SOT23 package or in die form, offering an excellent cost vs performance solution for single cell LED driving applications.


  • 80% efficiency
  • User adjustable output current
  • Single cell operation
  • Low saturation voltage switching transistor
  • Simple application circuit
  • Low external component count
  • SOT23 package
  • Available also in die form


  • LED flashlights and torches
  • LED backlights
  • White LED driver

Product Specifications

Product Parameters

AEC Qualified No
AEC-Q100 Grade No
Compliance (Only Automotive supports PPAP) Standard
Dimming (Analog) No
Dimming (PWM) No
Efficiency (%) 80
Efficiency (%) 80
LED Current (A) 0.08
MaximumInput Voltage (V) 6
Maximum Input Voltage (V) 6
Maximum LED Current (A) 0.08
Maximum Output Voltage (V) 18
Maximum Output Voltage (V) 18
MinimumInput Voltage (V) 0.8
Minimum Input Voltage (V) 0.8
OperatingTemperatureRange  (°C) 0 to 85
Operating Temperature Range (°C) 0 to 85
Quiescent Current Typ (mA) N/A
Switching Frequency (MHz) 160
Switching Frequency Maximum (kHz) 160
Topologies (Boost) Yes
Topologies (Buck-Boost) No
Topologies (Buck) No
Topologies (Charge Pump) No
Topology Boost

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