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A Product Line of
Diodes Incorporated
ZXLD383
SINGLE OR MULTI CELL LED DRIVER SOLUTION
Summary
The ZXLD383 is a single or multi cell LED driver designed for applications requiring step-up voltage conversion from a very
low input voltage. The IC generates constant current pulses that are ideal for driving single or multiple LEDs over a wide
range of operating voltages. It includes an on/off enable input that can be driven directly from a photocell array or an open
collector/drain logic output. The enable input features an ultra-low voltage drop diode to ground, eliminating the need for a
photocell array isolation diode in Garden Light applications.
The ZXLD383 uses a PFM control technique to drive an internal switching transistor which exhibits a low saturation
resistance. This ensures high efficiency, even for input voltages as low as 1.0V.
The IC can start up under full load and operates down to an input voltage of below 0.9V.
The ZXLD383 is offered in the space saving TSOT23-5 package or in die form, offering an excellent cost vs. performance
solution for single cell LED driving applications.
Features
Pin Assignments
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85% Efficiency
User adjustable output current
TSOT23-3
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Single cell operation
ENA 1
5
V CC
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Low saturation voltage
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TSOT23-3 package
Available also in die form
GND 2
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Simple application circuit
NC 3
4
V OUT
Application
(Top View)
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Garden lights
Door/pathway illumination
LED flashlight and torches
LED backlights
White LED driver
Gated boost supply generator
Typical Application Circuit
ZXLD383
Document number: DS32189 Rev. 3 - 2
1 of 10
www.diodes.com
May 2010
? Diodes Incorporated
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ZX-LD40L 2M 制造商:OMRON AUTOMATION AND SAFETY 功能描述:DIFFUSE RFLCT LINE BEAM 40MM 制造商:Omron Electronic Components LLC 功能描述:Diffuse RFLCT L ine Beam 40mm 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:DIFFUSE RFLCT LINE BEAM 40MM
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