ZXLD383ET5TA Diodes Zetex, ZXLD383ET5TA Datasheet

IC LED DRIVR WHITE BCKLGT TSOT-5

ZXLD383ET5TA

Manufacturer Part Number
ZXLD383ET5TA
Description
IC LED DRIVR WHITE BCKLGT TSOT-5
Manufacturer
Diodes Zetex
Type
Backlight, White LEDr
Datasheet

Specifications of ZXLD383ET5TA

Constant Current
Yes
Topology
Step-Up (Boost)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Backlight, Flash/Torch
Type - Secondary
High Brightness LED (HBLED), White LED
Frequency
330kHz
Voltage - Supply
0.9 V ~ 3.3 V
Voltage - Output
20V
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5
Operating Temperature
-20°C ~ 85°C
Current - Output / Channel
50mA
Internal Switch(s)
Yes
Efficiency
85%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ZXLD383ET5TR
Typical Application Circuit
Application
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
ZXLD383
Document number: DS32189 Rev. 3 - 2
85% Efficiency
User adjustable output current
Single cell operation
Low saturation voltage
TSOT23-3 package
Available also in die form
Simple application circuit
Garden lights
Door/pathway illumination
LED flashlight and torches
LED backlights
White LED driver
Gated boost supply generator
www.diodes.com
1 of 10
SINGLE OR MULTI CELL LED DRIVER SOLUTION
Pin Assignments
GND
ENA
NC
Diodes Incorporated
A Product Line of
1
2
3
(Top View)
TSOT23-3
5
4
V
V
© Diodes Incorporated
CC
OUT
ZXLD383
May 2010

Related parts for ZXLD383ET5TA

ZXLD383ET5TA Summary of contents

Page 1

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 ...

Page 2

Block Diagram D iode Array IMH 1.2V Pin Description Pin No. Name 1 ENA Enable / Photodiode array battery charge input 2 GND Ground 3 NC Not connected (internally open circuit) 4 Switch output external inductor/LED V ...

Page 3

Absolute Maximum Ratings Parameter Supply Voltage ( Output Voltage (V ) OUT Enable Voltage (V ) ENA Supply Current Output Switch Current Power Dissipation (TSOT23-3) Power Dissipation Die Operating Temperature Range Storage Temperature Range Electrical Characteristics Measured at ...

Page 4

Device Description The ZXLD383 is a simple PFM, DC-DC controller combined with a high performance internal switching transistor, enabling the production of a high efficiency boost converter for use in single cell applications. It includes a dual function Enable input ...

Page 5

Typical Characteristics 0.8 1 1.2 1 UT(AVERAG E) 250 200 150 100 50 0 0.8 1 1.2 1 vs. ...

Page 6

Typical Characteristics (Cont.) 450   400 350 300 250 200 150 100 50 1. (mA) ENA V vs. I (ENA) ENA For V = 0.8, 1.2, 1. Notes 3.5V for ...

Page 7

Application Examples Apart from the Garden Light application circuit shown on the front page of this datasheet, the ZXLD383 may be used in many other ways. The following circuits and notes show some other possibilities and give typical performance details. ...

Page 8

Buck-boost mode Simple boost converters can run into problems when the input supply voltage is similar to or exceeds the intended load voltage as there is usually a direct current path from the power source through to the load via ...

Page 9

... Ordering Information Part Number Package ZXLD383ET5TA TSOT23-5 Package Outline Dimensions Millimeters Dim. Min. Max. Min 1.00 A1 0.01 0.10 0.0003 A2 0.84 0.90 0.0330 b 0.30 0.45 0.0118 C 0.12 0.20 0.0047 D 2.90 BSC E 2.80 BSC ZXLD383 Document number: DS32189 Rev Part Mark 383 Inches Millimeters Dim ...

Page 10

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY ...

Related keywords