FAN5702 Configurable 180mA 6-LED Driver with I2C Control Features Description The FAN5702 is a highly integrated and configurable chargepump-based multi-LED driver. The device can drive up to six LEDs in parallel with a total output current of 180mA. Regulated internal current sinks deliver excellent current and brightness matching to all LEDs. Six (6) Parallel LEDs (up to 30mA Each) Total Package Load Current Capability: 180mA Group from 2 to 6 LEDs for Flexible Backlighting 2 I C Interface for Easy Programming 2 >600:1 Dimming Ratio for 100Hz PWM Frequency Logarithmically Controlled Dimming with 64 Steps Secondary Brightness Control Using PWM Dimming 2 up to 20kHz in Conjunction with I C Dimming − Dynamic Backlight Control (DBC) to Reduce Current Consumption Up to 92% Efficiency 1.2MHz Switching Frequency for Small-Sized Capacitors Built-in 1.5x Charge Pump with Low Drop-Out Bypass Switch and automatic switching to 1x mode 16-Bump 1.6mm × 1.6mm WLCSP (0.6mm Height) 16-Lead 3.0mm x 3.0mm UMLP (0.55mm Height) Applications The FAN5702 has an I C interface that allows the user to independently control the brightness with a default grouping of 2,1,1,1,1 for a maximum of five independent lighting channels. The LED driver can be programmed in a multitude of configurations to address broad lighting requirements for 2 different platforms. Each LED can be configured through I C as five independent channels (Group A has two LEDs by default) or any additional LEDs can join Group A to increase the backlighting needs as the display size increases. The device offers a second dimming control using the EN/PWM pin. Applying a PWM dimming signal to this pin allows control of the dimming of Group A LEDs so that the average current is the linear value multiplied by the PWM dimming duty-cycle. The device provides excellent efficiency, without an inductor, by operating the charge pump in 1.5x or pass-through mode. The FAN5702 can be ordered with default ISET values of 30mA, 20mA, 15mA, or 8mA. The default ISET is always determined by the ISET ordered (see Ordering Information). LCD Backlighting Mobile Handsets / Smartphones Portable Media Players Ordering Information Part Number LED Current (ISET) Temperature Range FAN5702UC30X 30mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UC20X 20mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UC15X 15mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UC08X 8mA -40 to 85°C WLCSP-16, 0.4mm Pitch Tape and Reel FAN5702UMP30X 30mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel FAN5702UMP20X 20mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel FAN5702UMP15X 15mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel FAN5702UMP08X 8mA -40 to 85°C UMLP-16, 3.0 x 3.0 x 0.55mm Tape and Reel © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Package Packing www.fairchildsemi.com FAN5702 — Configurable 180mA 6-LED Driver with I2C Control August 2010 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Typical Application Figure 1. Typical Application © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 2 A1 A2 A3 A4 A4 A3 A2 A1 B1 B2 B3 B4 B4 B3 B2 B1 C1 C2 C3 C4 C4 C3 C2 C1 D1 D2 D3 D4 D4 D3 D2 D1 Bumps Facing Down Bumps Facing Up Figure 2. WLCSP-16, 0.4mm Pitch, 1.61 x 1.61mm Pin Definitions Pin # Name Description D2 VIN Input Supply Voltage. Connect to 2.7 – 5.5VDC input power source. B4 GND Ground Charge Pump Output Voltage. Connect to LED anodes. D1 VOUT D3 ,D4 C1+, C1– Charge pump flying capacitor #1 C3, C4 C2+, C2– Charge pump flying capacitor #2 A1,A2 B1,B2 C1,C2 D2A, D1A D4,D3 D6,D5 LED Outputs A4 EN / PWM Enable / PWM dimming input. By default, this pin acts as a simple enable / disable function. When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and all functions 2 (including I C communications) are disabled. By setting General Purpose register bit 7 = 1, the pin functions as a PWM dimming input for Group A. To restore the Enable function, the General Purpose register bit 7 must be set LOW. B3 SDA I C interface serial data A3 SCL I C interface serial clock 2 2 © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 3 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control WLCSP Pin Configuration FAN5702 — Configurable 180mA 6-LED Driver with I2C Control UMLP Pin Configuration Bottom View Figure 3. UMLP-16, 0.5mm Pitch, 3mm x 3mm Pin Definitions Pin # Name Description 11 VIN Input Supply Voltage. Connect to 2.7 – 5.5VDC input power source. 6 GND Ground 12 VOUT Charge Pump Output Voltage. Connect to LED anodes. 10,9 C1+, C1– Charge pump flying capacitor #1 8,7 C2+, C2– Charge pump flying capacitor #2 1, 2 15, 16 13, 14 D2A, D1A D4,D3 D6,D5 LED Outputs 4 EN / PWM Enable / PWM dimming input. By default, this pin acts as a simple enable / disable function. When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and all functions 2 (including I C communications) are disabled. By setting General Purpose register bit 7 = 1, the pin functions as a PWM dimming input for Group A. To restore the Enable function, the General Purpose register bit 7 must be set LOW. 5 SDA I C interface serial data 3 SCL I C interface serial clock 2 2 © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 4 Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCC Parameter VIN, VOUT Pins Other Pins (1) Min. Max. Units –0.3 6.0 V –0.3 VIN + 0.3 V Human Body Model per JESD22-A114 3 Charged Device Model per JESD22-C101 2 ESD Electrostatic Discharge Protection Level TJ Junction Temperature –40 +150 °C TSTG Storage Temperature –65 +150 °C +260 °C TL Lead Soldering Temperature, 10 Seconds kV Note: 1. Lesser of VIN + 0.3 or 6.0V. Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol VIN Parameter Supply Voltage Min. Max. Units 2.7 5.5 V VLED LED Forward Voltage 2 4 V TA Ambient Temperature –40 +85 °C TJ Junction Temperature –40 +125 °C Typ. Max. Units Thermal Properties Symbol ΘJA Parameter Min. Junction-to-Ambient Thermal Resistance WLCSP 80 UMLP 49 °C/W Note: 2. Junction-to-ambient thermal resistance is a function of application and board layout. This data is measured with four-layer 2s2p boards in accordance to JESD51-7 JEDEC standard. Special attention must be paid not to exceed junction temperature TJ(max) at a given ambient temperate TA. © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 5 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Absolute Maximum Ratings Unless otherwise specified: VIN = 2.7V to 5.5V; TA = -40°C to +85°C; and ENA, EN3, EN4, EN5, and EN6 = 1. Typical values are VIN = 3.6V, TA = 25°C, ILED = 20mA, and LED cathode terminals = 0.4V. Circuit and components are according to Figure 1. Symbol Parameter Conditions Min. Typ. Max. Units Power Supplies and Thermal Protection 1.5x Mode, No LEDs 4.4 mA 1x Mode, No LEDs 0.3 mA IQ Quiescent Supply Current ISD Shutdown Supply Current EN = 0, VIN = 4.5V, TA = -40°C to +85°C 0.1 2.0 μA VUVLO Under-Voltage Lockout Threshold VIN Rising 2.55 2.70 V VUVHYST VIN Falling 2.20 2.40 V Under-Voltage Lockout Hysteresis 150 mV TLIMIT Thermal Shutdown 150 °C THYST Thermal Shutdown Hysteresis 20 °C LED Current Sinks ILED ILED(MAX) ILED_MATCH Absolute Current Accuracy (3) Maximum Diode Current LED Current Matching (4) VDTH 1x to 1.5x Gain Transition Threshold VHR Current Sink Headroom (5) VCATHODE=0.4V; see options for ISET –10% ISET +10% mA ILED = ISET 30 VCATHODE = 0.4V, ILED = ISET 0.4 LED Cathode Voltage Falling 100 mV ILED = 90% ILED(NOMINAL) 65 mV mA 3.0 % PWM Dimming fPWM PWM Switching Frequency tON_LED(MINIMUM) = 15µs DPWM PWM Duty-Cycle fPWM = 100Hz 0.15 20 kHz 100.00 % Charge Pump ROUT fSW tSTART Output Resistance 1.5x Mode 2.4 Ω 1x Mode 0.9 Ω Switching Frequency Startup Time 0.9 VOUT = 90% of VIN 1.2 1.5 MHz μs 250 Logic Inputs (EN, SDA, SCL) VIH HIGH-Level Input Voltage VIL LOW-Level Input Voltage VIMAX IIN 1.2 Maximum Input Voltage Input Bias Current Input Tied to GND or VIN V 0.4 V 1.8 5.5 V 0.01 1.00 μA Notes: 3. The maximum total output current for the IC should be limited to 180mA. The total output current can be split between the two groups (IDxA = IDxB = 30mA maximum). Under maximum output current conditions, special attention must be given to input voltage and LED forward voltage to ensure proper current regulation. See the Maximum Output Current section of the datasheet for more information. 4. For the two groups of current sinks on a part (group A and group B), the following are determined: the maximum sink current in the group (MAX), the minimum sink current in the group (MIN), and the average sink current of the group (AVG). For each group, two matching numbers are calculated: (MAX-AVG)/AVG and (AVG-MIN)/AVG. The largest number of the two (worst case) is considered the matching value for the group. The matching value for a given part is considered to be the highest matching value of the two groups. The typical specification provided is the most likely norm of the matching value for all parts. 5. For each Dxx pin, headroom voltage is the voltage across the internal current sink connected to that pin. VHRx = VOUT VLED. If headroom voltage requirement is not met, LED current regulation is compromised. © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 6 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Electrical Specifications VIN = 3.6V, TA = 25°C, ILED = 20mA, and LED cathode terminals = 0.4V. Figure 4. Efficiency with LED Current of 8mA and 20mA Figure 5. LED Current Match for all 6 LED Channels at ILED=20mA. Figure 6. LED Current Variation vs. Temperature Figure 7. Shutdown Current vs. Input Voltage Figure 8. Switching Frequency over Temperature with LED Current at 20mA © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 7 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Typical Characteristics VIN = 3.6V, TA = 25°C, ILED = 20mA, and LED cathode terminals = 0.4V. Figure 9. Mode Transition from 1x to 1.5x Mode Using PWM Control (VCATHODE Ramp Up) at 2% Duty Cycle Figure 10. Mode Transition from 1.5x to 1x Mode Using PWM Control (VCATHODE Ramp Down) at 2% Duty Cycle Figure 11. Line Transient Response in 1x Mode, VIN=3.6V – 4.2V, ILEDx=20mA Figure 12. Line Transient Response in 1.5x Mode, VIN=2.7V – 3.3V, ILED=20mA Figure 13. Line Transient from 1x to 1.5x Mode, VIN=3.2V – 4.1V, ILEDx=20mA Figure 14. Soft-Start with SDA and SCL © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 8 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Typical Characteristics 2 Figure 15. Linear Dimming via I C Interface, VIN=3.6V, ILEDx=20mA, and tRAMP=6.4ms Figure 16. PWM Dimming, VIN=3.6V, ILEDx=20mA, and EN=1kHz with 20% Duty Cycle 2 Figure 17. PWM and Linear (via I C) Dimming, VIN=3.6V, ILEDx=20mA, and EN=1kHz with 20% Duty Cycle © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 9 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Typical Characteristics Guaranteed by design. Symbol Parameter Conditions fSCL SCL Clock Frequency tBUF Bus-Free Time between STOP and START Conditions tHD;STA SCL LOW Period tHIGH SCL HIGH Period Repeated START Setup Time tSU;DAT Data Setup Time tHD;DAT Data Hold Time tRCL SCL Rise Time tFCL SCL Fall Time tRDA SDA Rise Time tFDA SDA Fall Time tSU;STO Standard mode 4.7 Fast Mode 1.3 Units kHz μs 4 μs Fast Mode 600 ns Standard Mode 4.7 μs Fast Mode 1.3 ns 4 μs Fast Mode 600 ns Standard Mode 4.7 μs 600.0 ns Standard Mode 250 ns Fast Mode 100 ns Standard Mode 0 3.45 μs Fast Mode 0 900.00 ns Standard Mode 20+0.1CB 1000 ns Fast Mode 20+0.1CB 300 ns Standard Mode 20+0.1CB 300 ns Fast Mode 20+0.1CB 300 ns Standard Mode 20+0.1CB 1000 ns Fast Mode 20+0.1CB 300 ns Standard Mode 20+0.1CB 300 ns Fast Mode 20+0.1CB 300 ns Standard Mode Stop Condition Setup Time CB 100 400 Fast Mode (6) Max. Fast Mode Standard Mode tSU;STA Typ. Standard Mode Standard Mode START or Repeated START Hold Time tLOW Min. Fast Mode μs 4 600 Capacitive Load for SDA and SCL ns 400 pF Note: 6. Rise time of SCL after a repeated START condition and after an ACK bit. Timing Diagram tF tSU;STA tBUF SDA tR SCL tLOW tHD;STA TSU;DAT tHD;STO tHIGH tHD;DAT tHD;STA REPEATED START START STOP START 2 Figure 18. I C Interface Timing for Fast and Slow Modes © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 10 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control I2C Timing Specifications The FAN5702 is a white LED driver system based on an adaptive 1.5x charge pump capable of supplying up to 180mA of total output current. The tightly matched current sinks ensure uniform brightness between the LEDs. Each LED has a common anode configuration with its peak drive current set during manufacturing (see Ordering Information and ISET). An 2 I C-compatible interface is used to vary the brightness within the individual current sinks as well as configure the grouping. Each LED is controlled with 64 exponentially spaced analog 2 brightness control levels through I C, as indicated in Table 1. For maximum flexibility, the FAN5702 can be programmed with five independently controlled LED banks; by default, arranged as 2,1,1,1,1 (first two LEDs represent Group A). 2 Through I C, the device can be reconfigured to add up to six LEDs to Group A as needed by application requirements. Register Controlled Brightness The DC value of the LED current is modulated according to the values in Table 1. Current is expressed as a percentage of the full scale current and is illustrated with a 20mA ISET. Table 1. Brightness Control Charge Pump The charge pump operates in either 1x mode, where VOUT is connected to VIN through a bypass switch, or in 1.5x mode. The circuit operates in 1x mode until the LED with the highest forward voltage (VLED(MAX)) can no longer maintain current regulation. At that point, 1.5x mode begins. If the lowest active cathode voltage is greater than 1.8V, the charge pump switches back to 1x mode. IC Enable By default the General Purpose register bit 7 = 0, the EN pin functions as enable/disable. When the EN pin is LOW, all 2 circuit functions, including I C, are disabled and the registers are set to their default values. 2 When the EN pin HIGH, I C interface is enabled. The LEDs can be turned on/off by writing to the General Purpose 2 register. The user can always communicate via I C with the device to change register settings regardless of whether any LED is on or off. PWM Dimming By programming the General Purpose register bit 7 = 1, the EN pin is reappropriated to a PWM dimming input. Applying a PWM signal to this pin controls the LED current waveform to be ON when the PWM dimming pin is HIGH and OFF when the PWM dimming pin is LOW. By using this pin in conjunction 2 with the I C register dimming, the part can achieve higher dimming resolution. For instance, an 8-bit PWM dimming signal applied along with the 6-bit register dimming yields better than 14 bits of resolution To change the PWM dimming pin back to the EN function, set the General Purpose register bit 7 to 0. © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Dimming Code (Bx5-Bx0) Current Level ILED (mA) (ISET=20mA) 000000 000001 000010 000011 000100 000101 000110 000111 001000 001001 001010 001011 001100 001101 001110 001111 010000 010001 010010 010011 010100 010101 010110 010111 011000 011001 011010 011011 011100 011101 011110 011111 100000 100001 100010 100011 100100 100101 100110 100111 101000 101001 101010 101011 101100 101101 101110 101111 110000 110001 110010 110011 110100 110101 110110 110111 111000 111001 111010 111011 111100 111101 111110 111111 0.125% 0.188% 0.249% 0.312% 0.374% 0.438% 0.499% 0.560% 0.622% 0.692% 0.750% 0.810% 0.875% 0.938% 1.004% 1.124% 1.250% 1.375% 1.499% 1.625% 1.750% 1.881% 2.063% 2.249% 2.438% 2.687% 2.939% 3.186% 3.562% 3.936% 4.310% 4.813% 5.314% 5.936% 6.565% 7.313% 8.059% 8.938% 9.876% 10.874% 12.005% 13.253% 14.618% 16.124% 17.881% 19.875% 22.121% 24.621% 27.376% 30.373% 33.623% 37.124% 40.873% 44.875% 49.124% 53.624% 58.375% 63.378% 68.625% 74.122% 79.874% 85.873% 92.373% 100.000% 0.025 0.038 0.050 0.063 0.075 0.088 0.100 0.113 0.125 0.138 0.150 0.163 0.175 0.188 0.200 0.225 0.250 0.275 0.300 0.325 0.350 0.375 0.413 0.450 0.488 0.538 0.588 0.638 0.713 0.788 0.863 0.963 1.063 1.188 1.313 1.463 1.613 1.788 1.975 2.175 2.400 2.650 2.925 3.225 3.575 3.975 4.425 4.925 5.475 6.075 6.725 7.425 8.175 8.975 9.825 10.725 11.675 12.675 13.725 14.825 15.975 17.175 18.475 20.000 www.fairchildsemi.com 11 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Circuit Description Register Addressing When changing the group A brightness, the IC steps through the brightness table at rate programmed by the RAMP register, indicated in Table 2. The FAN5702 has six user-accessible registers. 2 Table 4. I C Register Addresses Default Value Table 2. Group A Brightness Ramp Control RAMP[1:0] Time per Step Full-Scale Ramp Time Address 7 6 5 4 3 2 1 0 HEX 00 0.1ms 6.4ms GENERAL 0 0 0 0 0 0 0 0 10 01 25ms 1600ms CONFIG 0 0 0 0 0 0 0 0 20 10 50ms 3200ms CHA 1 1 1 1 1 1 1 1 A0 6400ms CH3 1 1 1 1 1 1 1 1 30 CH4 1 1 1 1 1 1 1 1 40 CH5 1 1 1 1 1 1 1 1 50 CH6 1 1 1 1 1 1 1 1 60 11 100ms VOUT Short-Circuit Protection The FAN5702 has integrated protection circuitry to prevent the device from being short circuited when the output voltage falls below 2V. If this occurs, FAN5702 turns off the charge pump and the LED driver outputs, but a small bypass switch is left on. The device monitors the output voltage to determine if it is still in short circuit condition and, once it has passed, softstarts and returns to normal operation. Note: 7. Bold identifies bits that cannot be overwritten. Bus Timing As shown in Figure 19, data is normally transferred when SCL is LOW. Data is clocked in to the FAN5702 on the rising edge of SCL. Typically, data transitions shortly at or after the falling edge of SCL to allow ample time for the data to set up before the next SCL rising edge. VOUT Over-Voltage Protection If the output voltage goes above 6V, the FAN5702 shuts down until this condition has passed. The charge pump and LED driver outputs are turned off. Once this condition has passed FAN5702 soft-starts into normal operation. Data change allowed SDA I2C Interface TH The FAN5702’s serial interface is compatible with standard 2 and fast I C bus specifications. The FAN5702’s SCL line is an input and its SDA line is a bi-directional open-drain output, meaning that it can only pull down the bus when active. The SDA line only pulls LOW during data reads and when signaling ACK. All data is shifted in MSB (bit 7) first. Figure 19. Data Transfer Timing Each bus transaction begins and ends with SDA and SCL HIGH. A transaction begins with a START condition, which is defined as SDA transitioning from 1 to 0 with SCL HIGH, as shown in Figure 19. Slave Address The FAN5702’s slave address is 6CH. SDA 2 Table 3. I C Slave Address 7 6 5 4 3 2 1 0 0 1 1 0 1 1 0 R/ W TSU SCL THD;STA Slave Address MS Bit SCL Figure 19. Start Bit © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 12 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Brightness Ramp Control Slave Releases Master Drives tHD;STO ACK(0) or NACK(1) SDA Slave Releases tSU;STA tHD;STA ACK(0) or NACK(1) SDA SLADDR MS Bit SCL SCL Figure 20. Stop Bit Figure 21 Repeated Start Timing Read and Write Transactions The following figures outline the sequences for data read and write. Bus control is signified by the shading of the packet, defined as Master Drives Bus Slave Drives Bus and . All addresses and data are MSB first. 2 Table 5. I C bit Definitions for Figure 22 and Figure 23. Symbol Definition S START. See Figure 19. A ACK. The slave drives SDA to 0 to acknowledge the preceding packet. A NACK. The slave sends a 1 to NACK the preceding packet. R Repeated START. See Figure 21. P STOP. See Figure 20. 7 bits S Slave Address 0 0 8 bits 0 8 bits 0 A Reg Addr A Data A P Figure 22. Write Transaction 7 bits S Slave Address 0 0 8 bits 0 A Reg Addr A 7 bits R Slave Address 1 0 8 bits 1 A Data A P Figure 23. Read Transaction © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 13 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control During a read from the FAN5702 (Figure 23), the master issues a “Repeated Start” after sending the register address and before resending the slave address. The “Repeated Start” is a 1-to-0 transition on SDA while SCL is HIGH, as shown in Figure 21. A transaction ends with a STOP condition, which is defined as SDA transitioning from 0 to 1 with SCL HIGH, as shown in Figure 20. 2 The following tables define the operation of each register bit. Bold values are power-up defaults. These values apply only to I C version of the part. Bit Default Value Name GENERAL Default: 00H Description General Purpose Register ADDR = 10H 7 PWM 0 Setting this bit=1 changes the EN pin to function as a PWM dimming input for group A LEDs. This bit must be set to zero for the chip to be disabled. 6,5 FS1, FS2 00 00=20mA (default), 01=30mA, 10=15mA, 11=8mA when I C is used. 4 EN6 0 Default=0 (Off), LED Channel Active=1 3 EN5 0 Default=0 (Off), LED Channel Active=1 2 EN4 0 Default=0 (Off), LED Channel Active=1 1 EN3 0 Default=0 (Off), LED Channel Active=1 0 ENA CONFIG 0 Default: 00H 2 Default=0 (Off), LED Channel Active=1 Configuration Register ADDR = 20H 7 T56 0 Tie channel 5 and 6 together. Default=0 (Separate). Group 5&6 =1. Both currents are set by CH5 register. T56 is overwritten by either S5A or S6A. 6 T34 0 Tie channel 3 and 4 together. Default=0 (Separate). Group 3&4 =1. Both currents are set by the CH3 register. T34 is overwritten by either S3A or S4A. 5 S6A 0 CH6 group configuration. Independent=0 (default); part of group A=1. 4 S5A 0 CH5 group configuration. Independent=0 (default); part of group A=1. 3 S4A 0 CH4 group configuration. Independent=0 (default); part of group A=1. 2 S3A 0 CH3 group configuration. Independent=0 (default); part of group A=1. 1,0 RS1, RS0 00 Sets current ramp rate for group A channels CHA Default: FFH 7:6 Reserved 11 5:0 Brightness A 0 – 63 00 – 3FH CH3 Default: 7:6 Reserved 11 5:0 Brightness 3 0 – 63 00 – 3FH CH4 Default: FFH 7:6 Reserved 11 5:0 Brightness 4 0 – 63 00 – 3FH CH5 7:6 5:0 CH6 Default: FFH Reserved 11 Brightness 5 0 – 63 00 – 3FH Default: FFH 7:6 Reserved 11 5:0 Brightness 6 0 – 63 00 – 3FH © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Group A Brightness Control ADDR = A0H 2 Vendor ID bits. These bits can be used to distinguish between vendors via I C. Writing to these bits does not change their value. 6-bit value that controls group A brightness per values in Table 1 Channel 3 Brightness Control ADDR=30H Writing to these bits does not change their value. 6-bit value that controls channel 3 brightness per values in Table 1 Channel 4 Brightness Control ADDR = 40H Writing to these bits does not change their value. 6-bit value that controls channel 3 brightness per values in Table 1 Channel 5 Brightness Control ADDR = 50H Writing to these bits does not change their value. 6-bit value that controls channel 3 brightness per values in Table 1 Channel 6 Brightness Control ADDR = 60H Writing to these bits does not change their value. 6-bit value that controls channel 3 brightness per values in Table 1 www.fairchildsemi.com 14 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Register Descriptions FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Physical Dimensions 0.03 C 2X E F A B 0.40 A1 BALL A1 INDEX AREA (Ø0.20) Cu Pad D 0.40 (Ø0.30) Solder Mask Opening 0.03 C 2X RECOMMENDED LAND PATTERN (NSMD PAD TYPE) TOP VIEW 0.06 C 0.625 0.547 0.05 C C SEATING PLANE 0.378±0.018 0.208±0.021 E SIDE VIEWS D NOTES: A. NO JEDEC REGISTRATION APPLIES. 0.005 B. DIMENSIONS ARE IN MILLIMETERS. C A B Ø0.260±0.02 16X 0.40 D C B 0.40 C. DIMENSIONS AND TOLERANCE PER ASME Y14.5M, 1994. D. DATUM C IS DEFINED BY THE SPHERICAL CROWNS OF THE BALLS. (Y) ±0.018 A E. PACKAGE NOMINAL HEIGHT IS 586 MICRONS ±39 MICRONS (547-625 MICRONS). F 1 2 3 4 (X) ±0.018 F. FOR DIMENSIONS D, E, X, AND Y SEE PRODUCT DATASHEET. BOTTOM VIEW G. DRAWING FILNAME: MKT-UC016AArev2. Figure 24. WLCSP-16, 0.4mm Pitch, Dimensions Product-Specific Dimensions Product D E X Y FAN5702UCxx 1.610mm 1.610mm 0.205mm 0.205mm Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 15 0.10 C 3.00 2X A B 3.00 1.75 3.00 1.75 3.00 PIN 1 IDENT 0.10 C 2X TOP VIEW 16X 0.75 0.55 MAX 0.10 C 0.08 C 0.50 (0.15) 16X 0.30 RECOMMENDED LAND PATTERN 0.05 0.00 C SIDE VIEW SEATING PLANE NOTES: 1.75 1.65 PIN #1 IDENT A. DESIGN CONFORMS TO JEDEC MO-248. B. DIMENSIONS ARE IN MILLIMETERS. 4 1 C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 5 16 D. LAND PATTERN RECOMMENDATION FROM PCB MATRIX IPC LP CALCULATOR (V2009). 1.75 1.65 0.50 E. DRAWING FILENAME: MKT-UMLP16Brev1. 8 13 12 0.50 9 16X 0.42 0.32 16X 0.30 0.20 0.10 0.05 C A B C BOTTOM VIEW Figure 25. UMLP-16, 3.0 x 3.0 x 0.55mm Pitch, Dimensions, Preliminary Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 16 FAN5702 — Configurable 180mA 6-LED Driver with I2C Control Physical Dimensions (Continued) FAN5702 — Configurable 180mA 6-LED Driver with I2C Control © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 www.fairchildsemi.com 17