LED Driver Board 121PW02F PRELIMINARY DATA SHEET DOD-PP-0901(1st edition) All information is subject to change without notice. Please confirm the sales representative before starting to design your system. Document Number: DOD-PP-0901 (1st edition) Published date: December 2009 CP(N) 1 (c) NEC LCD Technologies, Ltd. 2009 All rights reserved. 121PW02F INTRODUCTION The Copyright to this document belongs to NEC LCD Technologies, Ltd. (hereinafter called "NEC"). No part of this document will be used, reproduced or copied without prior written consent of NEC. NEC does and will not assume any liability for infringement of patents, copyrights or other intellectual property rights of any third party arising out of or in connection with application of the products described herein except for that directly attributable to mechanisms and workmanship thereof. No license, express or implied, is granted under any patent, copyright or other intellectual property right of NEC. Some electronic parts/components would fail or malfunction at a certain rate. In spite of every effort to enhance reliability of products by NEC, the possibility of failures and malfunction might not be avoided entirely. To prevent the risks of damage to death, human bodily injury or other property arising out thereof or in connection therewith, each customer is required to take sufficient measures in its safety designs and plans including, but not limited to, redundant system, fire-containment and anti-failure. The products are classified into three quality grades: "Standard", "Special", and "Specific" of the highest grade of a quality assurance program at the choice of a customer. Each quality grade is designed for applications described below. Any customer who intends to use a product for application other than that of Standard quality grade is required to contact an NEC sales representative in advance. The Standard quality grade applies to the products developed, designed and manufactured in accordance with the NEC standard quality assurance program, which are designed for such application as any failure or malfunction of the products (sets) or parts/components incorporated therein a customer uses are, directly or indirectly, free of any damage to death, human bodily injury or other property, like general electronic devices. Examples: Computers, office automation equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment, industrial robots, etc. The Special quality grade applies to the products developed, designed and manufactured in accordance with an NEC quality assurance program stricter than the standard one, which are designed for such application as any failure or malfunction of the products (sets) or parts/components incorporated therein a customer uses might directly cause any damage to death, human bodily injury or other property, or such application under more severe condition than that defined in the Standard quality grade without such direct damage. Examples: Control systems for transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, medical equipment not specifically designed for life support, safety equipment, etc. The Specific quality grade applies to the products developed, designed and manufactured in accordance with the standards or quality assurance program designated by a customer who requires an extremely higher level of reliability and quality for such products. Examples: Military systems, aircraft control equipment, aerospace equipment, nuclear reactor control systems, medical equipment/devices/systems for life support, etc. The quality grade of this product is the "Standard" unless otherwise specified in this document. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 2 121PW02F CONTENTS INTRODUCTION ............................................................................................................................................... 2 1. OUTLINE......................................................................................................................................................... 4 2. SPECIFICATIONS.......................................................................................................................................... 4 2.1 GENERAL SPECIFICATIONS................................................................................................................... 4 2.2 ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 4 2.3 ELECTRICAL CHARACTERISTICS........................................................................................................ 5 2.4 FUSE............................................................................................................................................................ 5 2.5 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS................................................................ 6 2.6 LUMINANCE CONTROL.......................................................................................................................... 7 3. RELIABILITY TEST...................................................................................................................................... 9 4. PRECAUTIONS ............................................................................................................................................ 10 4.1 MEANING OF CAUTION SIGNS ........................................................................................................... 10 4.2 CAUTIONS ............................................................................................................................................... 10 4.3 ATTENTIONS ........................................................................................................................................... 10 4.3.1 Handling of the product .......................................................................................................................10 4.3.2 Environment.........................................................................................................................................10 4.3.3 Other ....................................................................................................................................................10 5. OUTLINE DRAWINGS ................................................................................................................................ 12 REVISION HISTORY ...................................................................................................................................... 13 PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 3 121PW02F 1. OUTLINE This 121PW01F LED Driver board is for LCD module. Adaptable LCD modules are as follows. Adaptable LCD modules NL8060BC31-47 NL8060BC31-47D 2. SPECIFICATIONS 2.1 GENERAL SPECIFICATIONS Item Specification Unit Size See "5. OUTLINE DRAWINGS". mm Weight 6.0 (typ.) g Delivery unit 10 (min.) set 2.2 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit Remarks Power supply voltage VDDB -0.3~15.0 V BRTC signal VBC -1.0~VDDB+1.0 V BRTI signal VBI -0.3~5.3 V PWM select PWMSEL -0.3~5.3 V Storage temperature Tst -30~80 C - Operating temperature Top -30~80 C - 95 % 85 % 40C <Ta 50C 55 % 50C <Ta 60C 36 % 60C <Ta 70C 70 Note2 g/m3 Ta = 25C Input voltage Relative humidity Note1 Absolute humidity Note1 Ta 40C RH AH Ta> 70C Note1: No condensation Note2: Water amount at Ta=50C and RH=85% PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 4 121PW02F 2.3 ELECTRICAL CHARACTERISTICS (Ta=25C) Parameter Symbol min. typ. max. Unit Remarks Power supply voltage VDDB 10.8 12.0 13.2 V Note1, Note2 Power supply current IDDB (380) (800) Note2 m (At the maximum luminance control.) Note3 High VBCH 2.0 - - V Low VBCL - - 0.8 V BRTI signal VBI 0 - 2.5 V Output voltage Forward voltage (per circuit) VL 21.2 (24.0) 27.2 V Ta= +25C at IL= 50mA /One circuit Output current Forward current (per circuit) IL - 50 - mA At maximum luminance control. (Note 3) External PWM frequency (BRTH=Open, PWMSEL=GNDB) fPWM 100 - 500 Hz Note 4 External PWM pulse width PW 200 - - s Internal PWM frequency (PWMSEL=Open) Ft - 251 - Hz Input voltage BRTC signal - Note1: When designing of the power supply, take the measures for the prevention of surge voltage. Note2: This value excludes peak current such as overshoot current. Note3: The power supply lines (VDDB and GNDB) may have ripple voltage during luminance control of LED. There is the possibility that the ripple voltage produces acoustic noise and signal wave noise in audio circuit and so on. Put a capacitor between the power supply lines (VDDB and GNDB) to reduce the noise if necessary. Note 4: See 2.6 LUMINANCE CONTROL for the definition of fPWM. A recommended fPWM value is as follows 2n - 1 x fv 4 (n = integer, fv = frame frequency of LCD module) f PWM = 2.4 FUSE Parameter VDDB Fuse Type Supplier FMC16252AB Kamaya Electric Co.,Ltd Rating 2.5A 32V Fusing current Remarks 5.0A 5s max Note1 Note1: The power supply capacity should be more than the fusing current. If it is less than the fusing current, the fuse may not blow in a short time, and then nasty smell, smoke and so on may occur. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 5 121PW02F 2.5 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS CN1 socket (Driver side): Adaptable plug: 53261-0871 (MOLEX Inc.) 51021-0800 (MOLEX Inc.) Pin No. Symbol Function Remarks 1 VDDB Power supply 2 VDDB Power supply 3 GNDB Ground 4 GNDB Ground 5 BRTC Backlight ON/OFF signal 6 BRTI/PWM Luminance control terminal Note2 7 BRTH Luminance control terminal Note2 Note1 High or Open: Backlight ON Low: Backlight OFF GNDB: External PWM control Note3 Open:Resistor control or Voltage control Note2 Note1: All GNDB and VDDB terminals must be connected to appropriate terminals. Note2: See "2.6 LUMINANCE CONTROL". Note3: To enable external PWM control, PWMSEL (pin 8) must be set to the ground level of the circuit board. 8 PWMSEL Luminance control selector terminal CN2 socket (Driver side): Adaptable plug: SM12B-SRSS-TB (J.S.T. Mfg Co., Ltd.) SHR-12V-S, SHR-12V-S-B (J.S.T. Mfg. Co., Ltd.) Pin No. Symbol Function 1 A1 Anode 1 2 K1 Cathode 1 3 A2 Anode 2 4 K2 Cathode 2 5 A3 Anode 3 6 K3 Cathode 3 7 N.C. - 8 N.C. - 9 N.C. - 10 N.C. - 11 N.C. - 12 N.C. - PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 6 121PW02F 2.6 LUMINANCE CONTROL Method Adjustment and luminance ratio *Adjustment Backlight luminance can be controlled by duty ratio of the external PWM signal. To enable external PWM control, keep CN1 7pin High or Open, and CN1 8pin at a ground level of the circuit board (GNDB). The PWM signal must follow specification noted in the section 2.3 ELECTRICAL CHARACTERISTICS. Pin No Symbol Remark 5 BRTC 6 BRTI/PWM High or Open: Backlight ON(Note1) Low: Backlight OFF See below 7 BRTH See below 8 PWMSEL GNDB (Note2) Note1: Voltage level of pin No5 will be pulled up to high level internally when left Open. Note2: To enable external PWM control, PWMSEL (pin No8) must be set at the ground level of the circuit board. Schematic diagram of external PWM settings High External PWM BRTC (set to High or Open) Low High PWSEL (set to GND) Low A High PWM Low PWMVH PWM PWMVL tPWH tPWL tPW Definitions of parameters are as follows. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 7 121PW02F f PWM = 1 tPWH , DL = tPW tPW Interference noise may appear when the external PWM frequency and the vertical frame frequency of LCD module are close enough. To avoid interference noise, it is recommended choose the external PWM frequency fPWM as follows. 2n - 1 x fv 4 (n = integer, fv = frame frequency of LCD module) f PWM = * Relative Luminance Backlight status Luminance ratio Off 0% (Backlight turned off) Less than or equal to 10% (Min. Luminance) Note1 On 100% (Max. Luminance) Note1: This value varies depending on the pulse width. * Adjustment The variable resistor (R) for luminance control should be 10k 5%, 1/10W. Minimum point of the resistor is the minimum luminance. Also maximum point of the resistor is the maximum luminance. The resistor (R) must be connected between BRTH-BRTI terminals. Resistor control Pin No Symbol Remark 5 BRTC 6 BRTI/PWM See below 7 BRTH See below 8 PWMSEL Open High or Open: Backlight ON Low: Backlight OFF Schematic diagram of resistor control settings BRTH R BRTI * Relative Luminance Note1 Resistance Luminance ratio 0 10% (Min. luminance) 10k 100% (Max. Luminance) PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 8 121PW02F * Adjustment Voltage control method works, when BRTH terminal is 0V and VBI voltage is applied between BRTI and BRTH terminal. This control method can carry out continuation adjustment of luminance. Luminance is the maximum when BRTI terminal is Open. Voltage control Pin No Symbol Remark 5 BRTC 6 BRTI/PWM Voltage 7 BRTH 0V 8 PWMSEL Open High or Open: Backlight ON Low: Backlight OFF * Relative Luminance Note1 BRTI signal (VBI) Luminance ratio 0V 10% (Min. luminance) 2.5V 100% (Max. Luminance) 3. RELIABILITY TEST This test is in accordance with the Reliability Test of the adaptable LCD module. Refer to Reliability Test of the adaptable LCD module. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 9 121PW02F 4. PRECAUTIONS 4.1 MEANING OF CAUTION SIGNS The following caution signs have very important meaning. Be sure to read "4.2 CAUTIONS" and "4.3 ATTENTIONS" carefully. ! This sign has the meaning that customer will be injured by himself or the product will sustain damage, if a customer does wrong operations. This sign has the meaning that customer will be injured by himself, if a customer does wrong operations. 4.2 CAUTIONS Be sure to wait for a while after turning the power OFF before replacing. LED driver is still hot soon after shutting down. Do not apply mechanical shock. It may damage products. 4.3 ATTENTIONS ! 4.3.1 Handling of the product Do not touch or apply stress to exposed electronic parts. Doing so may cause damage or malfunctioning of products. Only hold the edge of the circuit board when unpacking. When handling the product, take measures of electrostatic discharge with such as earth band, ionic shower and so on, because the product may be damaged by electrostatic. Do not plug or unplug the interface connectors while the product is operating. 4.3.2 Environment Do not operate or store in high temperature, high humidity, dewdrop atmosphere or corrosive gases. Keep a product in a packing box with antistatic pouch under room temperature to avoid dusts and sunlight, when storing the product. In order to prevent dew condensation occurred by temperature difference, the product packing box should be opened after enough time passed under the environment of an unpacking room. Take the sufficient time before unpacking because a situation of dew condensation is changed by the environmental temperature and humidity. (Recommended leaving time: 6 hours or more with packing state) Do not operate in high magnetic field. Circuit boards may be broken down by it. This product is not designed as radiation resistant. 4.3.3 Other All GNDB and VDDB terminals should be used without any non-connected lines. Do not disassemble a product. Pack a product with original packing material, in order to avoid any damages during transportation, when returning the product to NEC. Insert spacers between the LED Driver board and the chassis to secure spatial distance. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 10 121PW02F Mounting method example 1. Metal spacer *1 Chassis Mounting surface 10.5mm min. Driver *Components are mounted on the upper side in this drawing. Mounting method example 2. Mounting screw and washer *1 Driver *Components are mounted on the upper side in this drawing. Mounting screw and washer *1 Mounting surface 1mm min. Chassis Metal spacer *1 *1: The conductive material (mounting screw, washer, metal spacer and so on) is allowed to mount within the limits of 2.5mm radius from the center of mounting hole. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 11 121PW02F 5. OUTLINE DRAWINGS (62.5) (5) (10) (16) Maximum height: 5.05mm Note2 (5) (5) (10) (9) Maximum height: 5.05mm Note2 (9) (10) (Unit: mm) Note1: The values in parentheses are for reference. Note2: This value excludes the thickness of the base boards. PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) 12 121PW02F REVISION HISTORY The inside of latest specifications is revised to the clerical error and the major improvement of previous edition. Only a changed part such as functions, characteristic value and so on that may affect a design of customers, are described especially below. Edition 1st edition Document number DOD-PP0901 Prepared date Dec. 4, 2009 Revision contents and signature Revision contents New issue Signature of writer Approved by Checked by T. OGAWA PRELIMINARY DATA SHEET DOD-PP-0901 (1st edition) Prepared by T. OGAWA 13