TCA62724FMG TOSHIBA CMOS Integrated Circuits Silicon Monolithic TCA62724FMG Three-Channel Constant-Current LED Driver The TCA62724FM is an optimal constant-current LED driver for RGB pixel LEDs. The device supports 16 dimming states for each color in the RGB pixel LED setup, resulting in 4096 colors for carrying out illumination by internal PWM. Moreover, it is not necessary to connect external resistance to an output in almost all cases. The forward current of the LED is set up using the external resistor. Features • Output current capability and the number of outputs outputs : 155 mA x 3 • Constant current range : 5 to 150 mA • Low consumption current Weight: 0.016 g (typ.) Supply current at operation (Iout = 20 mA) : 600 µA Supply current at standby : 1 µA • For anode common LED • Power supply voltage range 2 : VDD = 2.8 to 5.5 V 2 • I C interface (I C is a trademark of Philips Electronics N.V.) • Package : SON10-P-0303-0.50 (height : 0.8 mm) Package and Pin Layout (top view) SHDN Company Headquarters 3 Northway Lane North Latham, New York 12110 Toll Free: 800.984.5337 Fax: 518.785.4725 VDD SDA OUT0 SCL OUT1 RESET OUT2 GND REXT Web: www.marktechopto.com | Email: [email protected] California Sales Office: 950 South Coast Drive, Suite 265 Costa Mesa, California 92626 Toll Free: 800.984.5337 Fax: 714.850.9314 TCA62724FMG Block Diagram VDD SDA OUT0 I2 C Interface LOGIC SCL PWM LOGIC OUT1 OUT2 RESET SHDN I-REG REXT Terminal Description Pin No. Pin Name 1 SHDN 2 SDA Function IC input terminal enable When the data is “L”, power-saving mode applies; when the data is “H”, the IC operates. Serial data input / output terminal 3 SCL 4 RESET Serial clock input terminal 5 GND GND terminal 6 REXT This is an output current setting resistor connect terminal. The output current does not flow when this terminal is opened. Excessive output current will destroy the IC if this terminal is connected to GND. 7 OUT2 8 OUT1 9 OUT0 10 VDD Low active reset input terminal Output terminal 2.8 V to 5.5 V supply voltage terminal 2 2005-04-19 TCA62724FMG Maximum Ratings (Topr = 25°C) Characteristic Supply voltage Output voltage Output current Input voltage SDA terminal current GND current Symbol Ratings Unit VDD VOUT IOUT VIN ISDA IGND −0.3 ~ +6.0 −0.3 ~ +6.0 155 −0.3 ~ VDD+0.3 10 470 V V mA/ch mA mA mA 0.41 (free air) PD Power dissipation Thermal resistance W 0.47 (on PCB)* 300 (free air) Rth (j-a) °C/W 260 (on PCB) Operating temperature Topr −40 ~ +85 °C Storage temperature Tstg −55 ~ +150 °C Tj 150 °C Maximum junction temperature Note: Subtract 3.8 mW / degree from the maximum rating value about a degree if the operation temperature exceeds 25°C when the device is mounted on a PCB. Recommended Operating Condition (unless otherwise specified, Topr = - 40 to 85°C) Characteristic Symbol Condition Min Typ. Max Unit VDD - 2.8 3.6 5.5 V High level VIH SDA, SCL, SHDN, RESET 0.7VDD - VDD+0.15V Low level VIL SDA, SCL, SHDN, RESET −0.15 - 0.3VDD IOUT OUT0 to OUT2 5 - 150 mA/ch REXT - 3.7 - 109 kΩ ISDA Acknowledge - 3 - mA Supply voltage Input voltage Constant current output REXT SDA terminal current V Electrical Characteristics (unless otherwise specified, VDD = 2.8 to 5.5 V, Topr = 25°C) Characteristic Symbol Condition Min Typ Max Unit VDD - 2.8 3.6 5.5 V Supply current (IC operation) IDD (On) REXT = 27.6 kΩ, VDD = 3.6 V - - 700 µA Supply current (IC standby) IDD (Off) SHDN = L - - 1.0 µA High level VIH SDA, SCL, SHDN, RESET 0.7VDD - VDD+0.15V Low level VIL SDA, SCL, SHDN, RESET −0.15 - 0.3VDD Input current Gain REXT terminal voltage IIN GAIN VREXT SCL, SHDN, RESET IOUT/IREXT, REXT = 11 kΩ VDD=3.6 V, REXT = 11 kΩ IOZ SHDN = “L”, VOUT = 5.5 V 460 1.17 - 1.0 560 1.25 0.1 µA A/A V Output leakage current −1.0 359 1.09 - Constant current accuracy between bits dIOUT VDD = 3.6 V, REXT = 11 kΩ - ±1 ±7.5 % PWM frequency fPWM - - 3.0 - kHz tRE - - 2 5 ms Supply voltage Input voltage Time from SHDN release to start of operation 3 V µA 2005-04-19 TCA62724FMG 2 Characteristics of the SDA and SCL Bus Lines for I C-bus Devices Characteristic Symbol SCL clock frequency Bus free time between STOP and START condition Hold time (repeated) START condition Setup time for repeated START condition Setup time for STOP condition Data hold time Data setup time LOW period of the SCL clock HIGH period of the SCL clock Rise time of both SDA and SCL signals Fall time of both SDA and SCL signals Standard Mode Min Unit fSCL 0 Max 100 tBUF 4.7 - µs tHD;STA 4.0 - µs tSU;STA 4.7 - tSU;STO tHD;DAT tSU;DAT tLOW 4.0 0 250 4.7 ns ns µs tHIGH 4.0 - µs µs tf - 1000 ns tr - 300 ns kHz µs SDA tf tLOW tHIGH tBUF tSU;DAT tHD;STA SCL tHD;STA tr tHD;DAT tSU;STA tSU;STO 4 2005-04-19 TCA62724FMG Example Applications : Cellular Phone Application as Camera Light (Primary-color red, green and blue LEDs combine to emit good-quality white light for color reproducibility.) VIN SDA Bus Line VDD 2.8 to 5.5 V VOUT SCL Bus Line Camera light Microcontroller TCA62724FMG 150 mA 150 mA 150 mA VDD SHDN SDA SDA OUT 0 SCL SCL OUT 1 RESET OUT 2 GND REXT RED GREEN BLUE REXT = 3.7 kΩ Application as Cellular Phone Illumination (Combination with the TB62733FTG and the drive of two or more cellular phone LEDs is possible.) TB62733FTG C1+ VDD 2.8 to 5.5 V VOUT1 Main Panel 80 mA C1C2+ FB1 C2- 0.4 V VDD GND SP1 80 mA VOUT2 Sub-panel SP2 CE1 CE2 FB2 0.4 V TCA62724FMG SHDN 2 I C BUS VDD 2.8 to 5.5V 5 mA 5 mA VDD SDA OUT 0 SCL OUT 1 RESET OUT 2 GND REXT RED GREEN BLUE 5 mA Illuminations REXT=109kΩ 5 2005-04-19 TCA62724FMG I2C Interface *DATA transfer format Slave address 7 bits S R/W A Sub-address 8 bits A DATA byte 8 bits A P *START condition (S), STOP condition (P) START condition STOP condition : A HIGH to LOW transition on the SDA line while SCL is HIGH. : A LOW to HIGH transition on the SDA line while SCL is HIGH. SDA SCL S P STOP condition START condition *DATA validity The data on the SDA line must be stable during the HIGH period of the clock. The HIGH or LOW state of the data line can only change when the clock signal on the SCL line is LOW. SDA SCL SDA line stable SDA line change allowed *Acknowledge (A) The receiver is obliged to generate an Acknowledge after each byte has been received. SDA from Transmitter SDA from Receiver SCL from Master Acknowledge S 1 8 9 ACK clock 6 2005-04-19 TCA62724FMG *Slave address TCA62724FMG Bit 7 Bit 6 1 0 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 1 0 1 0 1 R/W R/W: When this bit is set to “H”, READ mode applies; when it is set to “L”, WRITE mode applies. *Sub-address PWM0 (PWM Duty Data Setup of OUT0) Bit 7 Bit 6 Bit 5 Bit 4 AI 0 0 0 PWM1 (PWM Duty Data Setup of OUT1) Bit 7 Bit 6 Bit 5 Bit 4 AI 0 0 0 PWM2 (PWM Duty Data Setup of OUT2) Bit 7 Bit 6 Bit 5 Bit 4 AI 0 0 0 Bit 3 Bit 2 Bit 1 Bit 0 0 0 0 1 Bit 3 Bit 2 Bit 1 Bit 0 0 0 1 0 Bit 3 Bit 2 Bit 1 Bit 0 0 0 1 1 Bit 2 Bit 1 Bit 0 1 0 0 ENABLE / SHDN (Data Setup of ENABLE / SHDN) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 AI 0 0 0 0 AI: When this bit is set to “H”, auto-increment is OFF; when it is set to “L”, auto-increment is ON. 7 2005-04-19 TCA62724FMG *DATA byte PWM0, PWM1, and PWM2 DATA PWM ON Duty DATA (0/15 to 15/15) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Don’t use Bit 2 Bit 1 Bit 0 PWM ON Duty DATA (default =”0000”) Bit 3 Bit 2 Bit 1 Bit 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Bit 5 Bit 4 PWM ON Duty DATA 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 ENABLE / SHDN DATA Bit 7 Bit 6 15/15 14/15 13/15 12/15 11/15 10/15 9/15 8/15 7/15 6/15 5/15 4/15 3/15 2/15 1/15 0/15 Don’t use Bit 3 Bit 2 Bit 1 Bit 0 X X ENABLE SHDN (default = ”00000000”) ENABLE DATA H L SHDN data H L : Output blinks at PWM0, PWM1, and PWM2 rate : Output is OFF : Output blinks at PWM0, PWM1, and PWM2 rate : Power-saving mode 8 2005-04-19 TCA62724FMG *WRITE mode Auto-increment OFF S Slave Address R/W (0) A Subaddress A DATA A Subaddress A DATA R/W (0) A Subaddress A DATA A DATA A --- --- P Auto-increment ON S Slave Address P The data of the immediately following Sub-address can be written in. *READ mode S Slave Address R/W (1) A First Byte A First byte (ENABLE / SHDN DATA and PWM2 DATA) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 x x ENABLE SHDN Bit 2 Second Byte Bit 1 P Bit 0 PWM2 DATA Second byte (PWM1 DATA and PWM0 DATA) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 PWM1 DATA Bit 1 Bit 0 PWM0 DATA Purchase of TOSHIBA I2C components conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. 9 2005-04-19 TCA62724FMG Setting of Output Current (Reference Data) The output current is set by the resistance connected between terminal REXT and GND. The output current can be set according to the following expression. 1.17 (V) × 460 IOUT (mA) = REXT (kΩ) IOUT vs REXT 160 Topr＝25°C VDS＝1 V 140 120 IOUT 〔mA 〕 100 80 60 40 20 0 0 20 40 60 REXT 〔 kΩ 〕 80 100 120 Output Voltage – Output Current (Reference Data) V DS vs IOUT 180 REXT = 3.6 kΩ 160 140 IOUT ［mA ］ 120 100 80 60 REXT = 11 kΩ 40 20 0 0.0 0.5 1.0 1.5 V DS ［ V ］ 10 2.0 REXT = 110 kΩ 2.5 3.0 2005-04-19 TCA62724FMG Output Current - PWM Duty (Reference Data) IOUT vs PWM Duty (On PCB, All Output ON) 160 140 IOUT 〔mA 〕 120 100 80 60 Topr = 25℃ Topr = 55℃ Topr = 85℃ 40 20 VDD = 5.5 V VOUT = 1 V Tj = 150℃(MAX) 0 0 1 2 3 4 5 6 7 8 9 10 PWM Duty (0/15～ 15/15) 11 12 13 14 15 Power Dissipation - Operating Temperature (Reference Data) Pd vs Topr (On PCB) 0.50 0.45 0.40 Pd 〔W 〕 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 40 Topr 〔℃〕 11 60 80 2005-04-19 TCA62724FMG Marking Week 1-26 C01 C01 QA1 QA1 Week 27-53 C01 Q A1 C01 : Product number : Monthly and weekly code : Lot code QA1 12 2005-04-19 TCA62724FMG Package Dimensions Weight: 0.016 g (typ.) 13 2005-04-19 TCA62724FMG SOLDERABILITY The following conditions apply to solderability. ● Solderability (1) Use of Sn-63Pb solder bath • solder bath temperature = 230°C, dipping time = 5 seconds, number of times = once, use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder bath • solder bath temperature = 245°C, dipping time = 5 seconds, number of times = once, use of R-type flux CAUTION • Particular care is necessary in the design of the output, VCC, COMMON and GND lines since the IC may be destroyed by short circuits between outputs, air contamination faults, or faults arising from improper grounding. • Do not insert devices in the wrong orientation. Make sure that the positive and negative terminals of power supplies are connected correctly. Otherwise the rated maximum current or power dissipation may be exceeded and the device may break down or undergo performance degradation, causing it to catch fire or explode and resulting in injury. • Note that the IC may be destroyed as a result of damage to or misconnection of external components. RESTRICTIONS ON PRODUCT USE 030619EBA • The information contained herein is subject to change without notice. • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc.. • The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk. • The products described in this document are subject to the foreign exchange and foreign trade laws. • TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. 14 2005-04-19