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ZD3313LEU

Description
Interface Circuit,
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size662KB,9 Pages
ManufacturerASIX
Websitehttp://www.asix.com.tw
Download Datasheet Parametric Compare View All

ZD3313LEU Overview

Interface Circuit,

ZD3313LEU Parametric

Parameter NameAttribute value
MakerASIX
package instruction,
Reach Compliance Codecompliant
Base Number Matches1
ZD3313 HV-Inductorless 4-Channel LED Driver
Zywyn
Features
• Drives 4 Channels of Multiple LED Strings with
Matched, Regulated Current Sources
• No External Capacitors or Inductors Required (except
Input Decoupling Capacitor)
• Low Drop-Out Current Sources Provide Excellent Cur-
rent Regulation Over Wide Supply Operation
• Up To 80mA per Channel
• Input Supply Range +4.5V to +16V
• Dimming can be achieved with PWM Control of EN Pin
or DC Voltage Level Control of the ISET Pin current
• Excellent Current Matching of each LED channel, typ.
1.5%, within Each LED String
• LED Current Set with Single External Resistor, RSET
• Thermal Shutdown Protection
• Available in 8-pin MSOP Green Package
ZD3313
High-Voltage Inductorless Regulated 4-Channel LED Driver
General Description
The ZD3313 contains 4 channels of linear regulated, low
drop out current sources, specifically designed to drive up
to 4 strings of LED’s with 80mA sourcing current per chan-
nel. Each LED string operates individually by terminating to
an internal, regulated current sink, which provides matched
and consistent LED current over a wide input supply range.
The LED currents are set by an external resistor, RSET,
connected to the ISET pin. The EN pin provides a chip en-
able function and can be used with a PWM pulse to achieve
a dimming control function. Dimming can also be achieved
by applying a DC voltage through the RSET or a resistor
network at the ISET pin.
The ZD3313 is available in a 8-pin MSOP green package.
Applications
Cellular Phones and Smartphones
LCD Panel Display Backlighting
LCD Module Backlighting
PDAs and Portable Media Players
Digital Camera and Camcorders
Avionics and Navigation Displays
Decorative Lighting
Industrial Lighting
Traffic Lighting
Torch and Flash Lighting
Ordering Information
Part Number
ZD3313LEU
ZD3313EVB
Temperature Range
–40°C to +85°C
n/a
Package Type
8-Pin MSOP
Evaluation
Board
Please contact the factory for pricing and availabiliy on Tape-on-Reel
option.
Typical Application
+4.5V to +28V
VBATT
Pin Configuration
VIN
1
EN
2
GND
3
ISET
4
8
ILED1
7
ILED2
6
ILED3
5
ILED4
4 LED strings @
80mA per string (max)
+4.5V to +16V
VIN
VIN
EN
EN
GND
ISET
LED1
C1
1nF
ZD3313
LED2
LED3
LED4
8-Pin MSOP
RSET
12KΩ
ILED=950/RSET
Figure 1. ZD3313 driving 4 channels of LED strings
in series in dual power supply mode.
1
Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206 • Email sales@zywyn.com • www.zywyn.com
Zywyn
Specifications subject to change without notice
May 2008
rev. 1.3

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