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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 Constant current range Low consumption current Supply current at operation (Iout = 20 mA) Supply current at standby * * * * For anode common LED Power supply voltage range I C interface (I C is a trademark of Philips Electronics N.V.) Package : SON10-P-0303-0.50 (height : 0.8 mm)
2 2
:
155 mA x 3 Weight: 0.016 g (typ.)
: 5 to 150 mA : 600 A : 1 A : VDD = 2.8 to 5.5 V
Package and Pin Layout (top view)
SHDN SDA SCL RESET GND
VDD OUT0 OUT1 OUT2 REXT
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TCA62724FMG
Block Diagram
VDD SDA OUT0 SCL I2 C Interface LOGIC PWM LOGIC OUT1
OUT2 RESET SHDN I-REG REXT
Terminal Description
Pin No.
1 2 3 4 5 6 7 8 9 10
Pin Name
SHDN SDA SCL RESET GND REXT OUT2 OUT1 OUT0 VDD 2.8 V to 5.5 V supply voltage terminal Output terminal
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 Serial clock input terminal Low active reset input terminal GND terminal 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.
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Maximum Ratings (Topr = 25C) Characteristic Supply voltage Output voltage Output current Input voltage SDA terminal current GND current Power dissipation Symbol VDD VOUT IOUT VIN ISDA IGND PD Rth (j-a) Topr Tstg Tj Ratings -0.3 ~ +6.0 -0.3 ~ +6.0 155 -0.3 ~ VDD+0.3 10 470 0.41 (free air) 0.47 (on PCB)* 300 (free air) 260 (on PCB) -40 ~ +85 -55 ~ +150 150 Unit V V mA/ch mA mA mA W
Thermal resistance Operating temperature Storage temperature Maximum junction temperature
C/W C C C
Note: Subtract 3.8 mW / degree from the maximum rating value about a degree if the operation temperature exceeds 25C when the device is mounted on a PCB.
Recommended Operating Condition (unless otherwise specified, Topr = - 40 to 85C)
Characteristic Supply voltage Input voltage High level Low level Symbol VDD VIH VIL IOUT REXT ISDA Condition SDA, SCL, SHDN, RESET SDA, SCL, SHDN, RESET OUT0 to OUT2 Acknowledge Min 2.8 0.7VDD -0.15 5 3.7 Typ. 3.6 3 Max 5.5 VDD+0.15V 0.3VDD 150 109 Unit V V mA/ch k mA
Constant current output REXT SDA terminal current
Electrical Characteristics (unless otherwise specified, VDD = 2.8 to 5.5 V, Topr = 25C)
Characteristic Supply voltage Supply current (IC operation) Supply current (IC standby) Input voltage High level Low level Symbol VDD IDD (On) IDD (Off) VIH VIL IIN GAIN VREXT IOZ dIOUT fPWM tRE Condition REXT = 27.6 k, VDD = 3.6 V SHDN = L SDA, SCL, SHDN, RESET SDA, SCL, SHDN, RESET SCL, SHDN, RESET IOUT/IREXT, REXT = 11 k VDD=3.6 V, REXT = 11 k SHDN = "L", VOUT = 5.5 V VDD = 3.6 V, REXT = 11 k Min 2.8 0.7VDD -0.15 -1.0 359 1.09 Typ 3.6 460 1.17 1 3.0 2 Max 5.5 700 1.0 VDD+0.15V 0.3VDD 1.0 560 1.25 0.1 7.5 5 Unit V A A V A A/A V A % kHz ms
Input current Gain REXT terminal voltage Output leakage current Constant current accuracy between bits PWM frequency Time from SHDN release to start of operation
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TCA62724FMG
Characteristics of the SDA and SCL Bus Lines for I C-bus Devices
Characteristic 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 SDA tf tLOW tHIGH tSU;DAT tBUF tHD;STA Symbol fSCL tBUF tHD;STA tSU;STA tSU;STO tHD;DAT tSU;DAT tLOW tHIGH tf tr Standard Mode Min 0 4.7 4.0 4.7 4.0 0 250 4.7 4.0 Max 100 1000 300 Unit kHz s s s s ns ns s s ns ns 2
SCL tHD;STA tr tHD;DAT tSU;STA tSU;STO
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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 SCL Bus Line
VDD 2.8 to 5.5 V
VOUT
Camera light
Microcontroller TCA62724FMG
SHDN SDA SCL SDA SCL RESET GND VDD OUT 0 OUT 1 OUT 2 REXT REXT = 3.7 k RED GREEN BLUE 150 mA 150 mA 150 mA
Application as Cellular Phone Illumination (Combination with the TB62733FTG and the drive of two or more cellular phone LEDs is possible.) TB62733FTG
C1+ C1C2+ FB1 C2VDD GND SP1 SP2 CE1 CE2 FB2 0.4 V VOUT2 80 mA 0.4 V VOUT1 80 mA
Main Panel
VDD 2.8 to 5.5 V
Sub-panel
TCA62724FMG
SHDN I C BUS
2
VDD 2.8 to 5.5V
5 mA
5 mA
5 mA
VDD OUT 0 OUT 1 OUT 2 REXT REXT=109k RED GREEN BLUE
Illuminations
SDA SCL RESET GND
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TCA62724FMG
I2C Interface
*DATA transfer format S Slave address 7 bits 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 START condition
P STOP 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 S 1 8 Acknowledge
9
ACK clock
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*Slave address TCA62724FMG Bit 7 Bit 6 1 0
Bit 5 1
Bit 4 0
Bit 3 1
Bit 2 0
Bit 1 1
Bit 0 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 Bit 3 0 Bit 2 0 Bit 1 0 Bit 0 1
PWM1 (PWM Duty Data Setup of OUT1) Bit 7 Bit 6 Bit 5 Bit 4 AI 0 0 0
Bit 3 0
Bit 2 0
Bit 1 1
Bit 0 0
PWM2 (PWM Duty Data Setup of OUT2) Bit 7 Bit 6 Bit 5 Bit 4 AI 0 0 0
Bit 3 0
Bit 2 0
Bit 1 1
Bit 0 1
ENABLE / SHDN (Data Setup of ENABLE / SHDN) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 AI 0 0 0 0
Bit 2 1
Bit 1 0
Bit 0 0
AI: When this bit is set to "H", auto-increment is OFF; when it is set to "L", auto-increment is ON.
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TCA62724FMG
*DATA byte PWM0, PWM1, and PWM2 DATA PWM ON Duty DATA (0/15 to 15/15) Bit 7 Bit 6 Bit 5 Don't use (default ="0000") Bit 3 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 Bit 2 DATA 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 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 1 Bit 0 PWM ON Duty 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
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PWM ON Duty DATA
ENABLE / SHDN DATA Bit 7 Bit 6 (default = "00000000") ENABLE DATA H L SHDN data H L
Bit 5
Bit 4
Bit 3 X
Bit 2 X
Bit 1 ENABLE
Bit 0 SHDN
Don't use
: Output blinks at PWM0, PWM1, and PWM2 rate : Output is OFF : Output blinks at PWM0, PWM1, and PWM2 rate : Power-saving mode
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TCA62724FMG
*WRITE mode Auto-increment OFF S Slave Address R/W (0) A Subaddress A DATA A Subaddress A DATA --P
Auto-increment ON S Slave Address R/W (0) A Subaddress A DATA A DATA A --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 Second Byte P
First byte (ENABLE / SHDN DATA and PWM2 DATA) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 x x ENABLE SHDN
Bit 2
Bit 1
Bit 0
PWM2 DATA
Second byte (PWM1 DATA and PWM0 DATA) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 PWM1 DATA
Bit 2
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.
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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) x 460 IOUT (mA) = REXT (k)
160 140 120 100 80 60 40 20 0 0 20 40
IOUT vs REXT
Topr25C VDS1 V
IOUT mA
60 REXT k
80
100
120
Output Voltage - Output Current (Reference Data)
180 160 140 120 IOUT mA 100 80 60 V DS vs IOUT
REXT = 3.6 k
REXT = 11 k
40 20 0 0.0 0.5 1.0 1.5 V DS V 2.0
REXT = 110 k
2.5
3.0
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Output Current - PWM Duty (Reference Data)
IOUT vs PWM Duty (On PCB, All Output ON) 160 140 120 IOUT mA 100 80 60 40 20 0 0 1 2 3 4 5 6 7 8 9 10 PWM Duty (0/15 15/15) 11 12 13 14 15
Topr = 25 Topr = 55 Topr = 85
VDD = 5.5 V VOUT = 1 V Tj = 150(MAX)
Power Dissipation - Operating Temperature (Reference Data)
Pd vs Topr (On PCB) 0.50 0.45 0.40 0.35 Pd W 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 40 Topr 60 80
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TCA62724FMG
Marking
Week 1-26
C01 QA1
C01 QA1
Week 27-53
C01 Q A1
: Product number : Monthly and weekly code : Lot code
C01 QA1
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TCA62724FMG
Package Dimensions
Weight: 0.016 g (typ.)
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TCA62724FMG
SOLDERABILITY
The following conditions apply to solderability. Solderability (1) Use of Sn-63Pb solder bath * solder bath temperature = 230C, 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 = 245C, 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
* The information contained herein is subject to change without notice.
030619EBA
* 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.
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