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OZ9939

O2Micro
Part Number OZ9939
Manufacturer O2Micro
Description Change
Published Apr 3, 2010
Detailed Description OZ9939 Change Summary CHANGES www.DataSheet4U.com Controlled Recipient #106805 printed on 3/6/2006. Updates will be pr...
Datasheet PDF File OZ9939 PDF File

OZ9939
OZ9939

Overview
OZ9939 Change Summary CHANGES www.
DataSheet4U.
com Controlled Recipient #106805 printed on 3/6/2006.
Updates will be provided to registered recipients.
No.
1.
Applicable Section Electrical Characteristics Description Updated limits for Protection Release Threshold Page(s) 3 REVISION HISTORY Revision No.
0.
6 0.
65 Description of change Initial release 1.
Electrical Characteristics: a.
Modify general test conditions in line 1; b.
Modify ‘Driver Frequency – Striking & Normal Operation’ Typ limit; c.
Modify ‘PWM Dimming Control – LCT frequency’, 2.
Reference Application Circuit: Modify C14, C9 & R9 values Ordering Information: Add OZ9939G, IG, D & DN.
Recommended Operating Range: 1.
Add ‘Dimming Range’; 2.
Fill in ‘Thermal Impedance’.
Electrical Characteristics: 1.
Update ‘Supply Current’ limits; 2.
Update ‘Soft Start’ limits; 3.
Update ‘Under Voltage Lockout’ limits; 4.
Update ‘Reference Voltage’ limits; 5.
Update ‘Driver Frequency’ limits; 6.
Update ‘Timer & Protection’ limits; 6.
Update ‘Drivers’ parameter name & limits; 7.
Update ‘PWM Dimming Control’ limits; 8.
Delete ‘Analog Dimming Control’.
Function Description: Update formula in NO.
4 Ignition, No.
6 Normal Operation & No.
9 Dimming Control.
Package Information: Add DIP package drawing.
Throughout datasheet: Miscellaneous changes.
Release Date 5/12/2005 6/27/2005 1.
0 9/21/2005 10/27/2005 OZ9939-DS-1.
1 Copyright © 2005 by O2Micro All Rights Reserved Patent#6,559,606, #6,856,519 & #6,809,93800 Page 0 CONFIDENTIAL OZ9939 Controlled Recipient #106805 printed on 3/6/2006.
Updates will be provided to registered recipients.
FEATURES • • • • • • • • • Negative PWM dimming polarity Constant operating frequency Drives positive/negative-impedance lamps during ignition High drive current for external MOSFETs User-defined ignition time and shutdown delay time Multiple mode dimming control Built-in intelligence for ignition and normal operation of CCFLs Built-in open-lamp protection and overvoltage protection for b...


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