APW7008 1X/1.5X/2x Charge Pump White LED Driver General Description Features ±1.5% LED Current Matching The APW7008 is a high efficiency charge pump white High Efficiency Up to 90% Over Li-ion Battery LED driver; the device drives up four white LEDs with regulated constant current for uniform intensity. The sup- Discharge Output Current Up to 30mA per LED 1.5x, and 2x charge pump modes and automatically switches the charge pump modes depend on the input 2.7V to 5.5V Operating Voltage Allow to Turn On or Off a Combination of LEDs voltage to maintain the required power for high power efficiency. The APW7008 provides up to 30mA per LED 1x/1.5x/2x Charge Pump Modes for a total of 120mA and allows several methods, such as a PWM signal on the CTRL0 pin for LED dimming. Three Low Shutdown Current: 2µA Maximum Low Input Ripple and EMI control logic pins allow to disable or enable a combination of LEDs. The supply current is only 2mA in 2x mode, Internal Soft-Start Limits Inrush Current and the EN pin allows the device to enter shutdown mode with 2µA quiescent current. The APW7008 switches at Short Circuit Current-Limit Thermal Shutdown Protection 1MHz frequency and only requires four 1µF ceramic capacitors and one resistor, and ensures low input current Output Over-Voltage Protection ripple and EMI. The APW7008 is available in a 16-pin QFN package. 3mmx3mm 16-pin QFN (QFN3X3-16) Package Lead Free and Green Devices Available (RoHS Compliant) Cellular Phone White LED Back Light 16 15 EN 1 PDA and Handheld Computer CTRL0 2 DSC CTRL1 3 CTRL2 4 ILED4 12 GND 11 C1- Metal GND Pad (Bottom) 10 C1+ 9 ISET 5 6 7 8 C2+ Portable Device 14 13 VIN • • • • ILED1 Applications ILED3 Pin Configuration ILED2 • • • • • • • • • • • • ply voltage ranges from 2.7V to 5.5V and it is optimized for a Li-ion battery application. The APW7008 operates in 1x, VOUT • • C2- APW7008 QFN3x3-16 Top View ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 1 www.anpec.com.tw APW7008 Ordering and Marking Information Package Code QA : QFN3x3-16 Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device APW7008 Assembly Material Handling Code Temperature Range Package Code APW7008 QA : APW 7008 XXXXX XXXXX - Date Code Note : ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD020C for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Absolute Maximum Ratings Symbol VOUT VIN (Note 1, 2) Parameter Rating Unit VOUT to GND -0.3 to +6 V VIN to GND -0.3 to +6 V -0.3 to +6 V ILED1-4 to GND -0.3 to +6 V CTRL0/1/2, EN to GND -0.3 to +6 V ISET to GND -0.3 to 2 V +150 °C -65 ~ 150 °C 260 °C VC1+, VC1-, VC2+, VC2- C1+, C1-, C2+, C2- to GND VILED1-4 VCTRL0/1/2, VEN VISET TJ Maximum Junction Temperature TSTG Storage Temperature TSDR Maximum Lead Soldering Temperature, 10 Seconds Note 1: Stresses beyond the absolute maximum rating may damage the device and operating in the absolute maximum rating conditions for extended periods may affect device reliability. Note 2: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(max) = (TJ – TA) / θJA ;TJ=125°C. Exceeding the maximum allowable power dissipation will result in excessive die temperature. Thermal Characteristics Symbol R θJA Parameter Thermal Resistance − Junction to Ambient Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 QFN3x3-16 2 Typical Value Unit 40 °C/W www.anpec.com.tw APW7008 Recommended Operating Conditions Symbol VIN Parameter Input Voltage Rating Unit 2.8 to 4.5 V VOUT Output Voltage 3 to 4 V ILED LED Current 5 to 30 mA IOUT TA Output Current, VIN>3.5V, VF=3.1V, 1x Mode 180 Output Current, 3.5V<VIN>3.1V, VF=3.1V, 1.5x Mode 120 Output Current, 3.1V<VIN>2.8V, VF=3.1V, 2x Mode 90 Ambient Temperature mA °C -40 to 85 Electrical Characteristics VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1µF (ESR = 0.03Ω), ILED = 20mA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. APW7008 Symbol VIN VUVLO Parameter Test Conditions Typ. Max. 2.7 - 5.5 V 2.2 2.4 2.6 V - 50 - mV in 1.5x/2x mode - 2 4 mA No switching in 1x mode - 0.5 1 mA EN=0 Input Voltage Under-Voltage Lockout Threshold VIN falling Under-Voltage Lockout Hysteresis IQ ILED-ERR Quiescent Current LED Current Accuracy Current Matching IISET VILED-TH ROUT 0.1 2 µA 5mA<ILED<30mA - ±2 ±8 % 5mA<ILED<30mA (Note 4) - ±1.5 ±5 % 5 - 1000 µA 370 400 420 ISET to LED Current Ratio IILED / (1.2V / REST) 5mA<ILED<30mA, TA = +25°C ILED Threshold Voltage VILED falling - 100 - mV VIN rising, VIN-VOUT - 300 - mV VIN rising, VOUT-VIN - 300 - mV 0.8 1 1.2 MHz 1x mode (VIN-VOUT) / IOUT - 1.6 3 1.5x mode (1.5xVIN-VOUT) / IOUT - 7 12 2x mode (2xVIN-VOUT) / IOUT - 16 28 VOUT < 1V - 40 - 5 5.5 6 1.3 0.7 - Switching Frequency Open Loop VOUT Resistance ISHORT Short Circuit Current-Limit VOVP OVP Threshold VIH (Note 3) ISET Current 1.5x mode to 1x mode Transition Hysteresis 2x mode to 1.5x mode Transition Hysteresis FOSC Unit Min. Logic Pins High Threshold Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 3 Ω mA V www.anpec.com.tw APW7008 Electrical Characteristics (Cont.) VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1µF (ESR = 0.03Ω), ILED = 20mA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. APW7008 Symbol Parameter Test Conditions Unit Min. Typ. Max. - 0.6 0.3 V VIL Logic Pins Low Threshold IIH Logic Pins High Current VIH = VIN - - 1 µA IIL Logic Pins Low Current VIL = GND - - 1 µA Thermal Shutdown - 150 - °C Thermal Shutdown Hysteresis - 20 - °C Note 3: LED current accuracy is defined as: ± (ILED-MEASURED - ILED-SET) / ILED-SET Note 4: LED current matching is defined as: ± (ILED-MAX - ILED-MIN) / (ILED-MAX + ILED-MIN) Pin Description PIN FUNCTION NO. NAME 1 EN 2 CTRL0 3 CTRL1 4 CTRL2 5 ISET LED Current Set Input. Connect a resistor from ISET to GND to set the LED current. VISET is typically 1.2V. 6 VOUT Output Voltage Pin. Connect VOUT to the LED anode. Connect a 1µF capacitor from VOUT to GND. 7 VIN Supply Voltage Input Pin. Connect a 1µF capacitor from VIN to GND. 8 C2+ Bucket Capacitor1 Positive Terminal. Connect a 1µF capacitor from C2+ to C2-. 9 C2- Bucket Capacitor1 Negative Terminal. Connect a 1µF capacitor from C2+ to C2-. 10 C1+ Bucket Capacitor1 Positive Terminal. Connect a 1µF capacitor from C1+ to C1-. 11 C1- Bucket Capacitor1 Negative Terminal. Connect a 1µF capacitor from C1+ to C1-. 12 GND Device Ground Pin. 13 ILED4 14 ILED3 15 ILED2 16 ILED1 Enable Input Pin. The EN pin is an active high Control. Pull EN pin above 1.3V to enable the device; pull EN pin below 0.3V to disable the device. LED On/Off Control Pin. Allow disabling or enabling a combination of LEDs. LEDs Cathode Connection. The LED current flows from VOUT through LED into ILED_ pin. The charge pump regulates the lowest VILED to 180mV. Connect ILED_ pin to VOUT if the LED is not used. Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 4 www.anpec.com.tw APW7008 Block Diagram C1+ C2- VOUT 1x/1.5x/2x MODE CHARGE PUMP AND GATE CONTROL LOGIC VIN EN C2+ C1- POR & SOFT-START CURRENT LIMIT CTRL1 - + - + - 0.1V 1MHz OSCILLATOR LED ON/OFF CONTROL - + + 0.18V CTRL0 1.2V MODE SELECT AND MIN ILED SELECT CTRL2 ILED1 ILED2 CONTROLLED CURRENT MIRROR ILED3 ILED4 + - Error Amp 1.2V + + + + - - - - ISET GND Typical Application Circuit COUT 1µF Digital Inputs 16 15 14 13 ILED1 ILED2 ILED3 ILED4 EN GND 12 1 2 3 4 CTRL0 C1- 11 APW7008 CTRL1 C1+ 10 CTRL2 ISET VOUT VIN 5 6 7 C2C2+ 8 9 C2 1µF C1 1µF Battery RSET CIN 1µF Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 5 www.anpec.com.tw APW7008 Typical Operating Characteristics Efficiency vs. Input Voltage 100 100 90 90 80 80 Efficiency (%) Efficiency (%) Efficiency vs. Input Voltage 70 60 4 LEDs at 20mA VF=3.1V 50 70 60 4 LEDs at 15mA VF=3.1V 50 40 40 30 30 20 20 2.5 3 3.5 4 2.5 4.5 3 3.5 Efficiency vs. Input Voltage Efficiency vs. Input Voltage 100 100 90 90 80 80 Efficiency (%) Efficiency (%) 4.5 Input Voltage (V) Input Voltage (V) 70 60 4 LEDs at 20 15mA VF=3.3V 50 4 70 60 4 LEDs at 15 20mA VF=3.3V 50 40 40 30 30 20 20 2.5 3 3.5 4 2.5 4.5 3.5 4 4.5 Input Voltage (V) Input Voltage (V) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 3 6 www.anpec.com.tw APW7008 Typical Operating Characteristics (Cont.) Input Current vs. Input Voltage Input Current vs. Input Voltage 200 260 240 180 4 LEDs at 30mA 4 LEDs at 20mA 160 Input Current (mA) Input Current (mA) 220 200 180 160 140 140 120 100 80 120 100 60 2.5 3 3.5 4 4.5 5 2.5 3 Input Voltage (V) 4 4.5 5 Input Voltage (V) LED Current vs. Input Voltage LED Current vs. Input Voltage 21 32 31 LED Current (mA) 20 LED Current (mA) 3.5 19 4 LEDs at 20mA 18 30 29 4 LEDs at 30mA 28 27 17 26 16 25 2.5 3 3.5 4 4.5 5 5.5 2.5 Input Voltage (V) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 3 3.5 4 4.5 5 5.5 Input Voltage (V) 7 www.anpec.com.tw APW7008 Typical Operating Characteristics (Cont.) Switching Frequency vs. Input Voltage Logic Threshold Voltage vs. Input Voltage 1.2 1200 in 2x mode ILED=20mA 1.1 Switching Frequency (kHz) Logic Threshold Voltage(V) 1150 high threshold 1 0.9 low threshold 0.8 1100 1050 1000 950 900 850 0.7 800 2.5 3 3.5 4 4.5 5 5.5 2.5 3 Input Voltage (V) 4 4.5 Input Voltage (V) LED Current vs. Temperature Switching Frequency vs. Temperature 1200 21 4 LEDs at 20mA VIN=4V in 2x mode VIN=4V 1100 20 LED Current (mA) 1000 Switching Frequency (kHz) 3.5 900 800 700 19 18 600 500 17 -40 -20 0 20 40 60 80 100 120 140 -40 Temperature (°C) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 -20 0 20 40 60 80 100 120 140 Temperature (°C) 8 www.anpec.com.tw APW7008 Typical Operating Characteristics (Cont.) LED Current vs. Temperature LED Current vs. Temperature 22 22 4 LEDs at 20mA VIN=3.3V 4 LEDs at 20mA VIN=2.7V 21 LED Current (mA) LED Current (mA) 21 20 19 18 19 18 17 17 -40 -20 0 20 40 60 80 100 120 140 -40 -20 0 20 40 60 80 100 120 140 Temperature (°C) Temperature (°C) Quiescent Current vs. Temperature Quiescent Current vs. Input Voltage 400 3 2.75 in 1x mode VIN=4V 2.5 Quiescent Current (mA) Quiescent Current (mA) 20 350 300 250 4 LEDs at 20mA VF=3.3V 2.25 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 200 -40 -20 0 20 40 60 80 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 100 120 140 Temperature (°C) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 Input Voltage(V) 9 www.anpec.com.tw APW7008 Typical Opeating Characteristics (Cont.) StartUp in 1x Mode IIN (100mA/div) StartUp in 1.5x Mode 4 LEDs at 20mA VF=3.1V, VIN=4V 4 LEDs at 20mA VF=3.1V, VIN=3.3V IIN (100mA/div) VOUT (2V/div) VOUT (2V/div) EN (5V/div) EN (5V/div) ILED (10mA/div) ILED (10mA/div) TIME (0.1ms/div) TIME (0.1ms/div) Dimming in 1x Mode StartUp in 2x Mode ILED (10mA/div) 4 LEDs at 20mA VF=3.1V, VIN=2.7V IIN (100mA/div) VOUT (2V/div) VOUT (1V/div) EN (5V/div) 4 LEDs at 20mA VF=3.1V, VIN=4V f=200Hz CTRL0 (2V/div) ILED (10mA/div) TIME (0.1ms/div) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 TIME (2ms/div) 10 www.anpec.com.tw APW7008 Typical Operating Characteristics (Cont.) Dimming in 2x Mode Dimming in 1.5x Mode ILED (10mA/div) ILED (10mA/div) V OUT (1V/div) VOUT (1V/div) CTRL0 (1V/div) 4 LEDs at 20mA, VF=3.1V VIN=3.3V, f=200Hz CTRL0 (1V/div) TIME (2ms/div) 4 LEDs at 20mA, VF=3.1V, VIN=2.7V, f=200Hz TIME (2ms/div) Line Transient Response in 1x to 1.5x Mode OVP Even with LED Open Circuit VIN (1V/div) ILED (10mA/div) 4 LEDs at 20mA, VF=3.1V VIN=3.2V to 3.8V V OUT (1V/div) VOUT (1V/div) V IN (1V/div) 4 LEDs at 20mA VF=3.1V, VIN=4V LED1 is open ILED (20mA/div) TIME (0.2ms/div) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 TIME (0.1ms/div) 11 www.anpec.com.tw APW7008 Typical Operating Characteristics (Cont.) Line Transient Response in 1.5x to 2x Mode VIN (1V/div) 4 LEDs at 20mA, VF=3.1V VIN=2.8V to 3.4V VOUT (1V/div) ILED (20mA/div) TIME (0.1ms/div) Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 12 www.anpec.com.tw APW7008 Function Description Soft-Start Control Logic Pins The APW7008 provides the soft-start function to limit the The APW 7008 provides three logic input pins to en- inrush current during start-up. When the input voltage is supplied to the device and exceeds the UVLO voltage, able or disable a combination of LEDs. Table1 shows the truth table of the logic pins. If the LED channels are the output capacitor is charged directly from input with a limited current source. Approximate 100µs after the out- not used, connecting the ILED pins to VOUT to turn off the respective LED channels. put voltage approaches the input voltage, the device starts to provide the programmed LED current and determines Control Logic Pin LED Status CTRL2 CTRL1 CTRL0 LED4 LED3 LED2 0 0 0 OFF OFF OFF ON 0 0 1 OFF OFF ON OFF the soft-start is completed and the device operates in 1x mode. When the programmed LED current cannot be 0 1 0 OFF ON OFF OFF 0 1 1 ON OFF OFF OFF reached, the charge pump goes into 1.5x mode. If the 1.5x mode charge pump cannot suffice for the LED cur- 1 0 0 OFF OFF ON ON 1 0 1 OFF ON ON ON rent need, the charge pump will switch to 2x mode. 1 1 0 ON ON ON ON 1 1 1 OFF OFF OFF OFF which of 1x and 1.5x, or 2x mode is required. When the programmed LED current can be reached with 1x mode, LED1 Mode Transition Table 1. The Truth Table of Control Logic Pins The APW7008 operates in 1x, 1.5x, and 2x charge pump LED Current Setting modes and automatically switches the charge pump modes depend on the input voltage to maintain the re- Connect a resistor from ISET pin to GND to set the LED quired power for high power efficiency. If the APW7008 operates in 1x mode, the VOUT is pulled up to the VIN. current. The ISET voltage is typically 1.2V, the LED current is typically 400 times the current through the ISET When the VIN decreases, the VILED will decease to maintain the regulated LED current. Until the VILED is below resistor. The LED current is given by: 100mV, the device will switch to 1.5x mode. In 1.5x mode, the VILED is regulated to 0.18V, and the output voltage is R SET = VF+0.18V. If the VIN continues to decrease until the VILED is below 100mV again, the device will switch to 2x mode. When the VIN rises and reaches by approximately VOUT300mV, the APW7008 switches back to 1.5x mode. If 400 × 1.2V ILED The APW7008 provides up 30mA of LED current per LED and the device has a max current matching of ±5% between any two LED currents and a max current accuracy of ±8%. If high accuracy is required, using a 1% precision surface mount resistor for the need. the VIN continues to rise and reach by approximately VOUT+300mV, the APW7008 switches back to 1x mode. The 2x charge pump is enough to suffice the White LED for a Li-ion battery application. The APW7008 ensures ILED (mA) RSET (kΩ) that in the 1x mode for as long as possible to increase the efficiency and extend the operating range by using 5 92 10 47 15 32 20 24 30 16.5 the 2x mode. The transition voltages from 1x to 1.5x and 1.5x to 2x are given by: VTRANS1X = VF + 0.1V + (IOUT x ROUT1X) VTRANS1.5X = [VF + 0.1V + (IOUT x ROUT1.5X)] / 1.5 Table 2. RSET Value Selection where VF is the forward voltage of LED IOUT is the output current ROUT1X is the output impedance in 1x mode = 1.6Ω ROUT1.5X is the output impedance in 1.5x mode = 7Ω Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 13 www.anpec.com.tw APW7008 Function Description (Cont.) LED Current Setting (Cont.) 400 350 300 RSET (Ohm) 250 200 150 100 50 0 0 5 10 15 20 25 30 ILED (mA) Figure 1. RSET Value vs. LED Current Shutdown/Enable Pull the EN above 1.3V to enable the device and pull EN pin below 0.3V to disable the device. In shutdown mode, all internal control circuits are turned off and the quiescent current is below 2µA. When the device exits shutdown mode, the output has soft-start function as the input voltage startup. Over-Voltage Protection If any of LEDs is failed or unused LED channel is not connected to VOUT, the charge pump mode will go into 2x mode and the output voltage will be pumped to 2 times the input voltage. If the output voltage is over 5.5V, the over-voltage protection circuit will limit the output voltage to approximately 5.5V. Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 14 www.anpec.com.tw APW7008 Application Information Capacitor Selection 20 For lower input and output voltage ripples, both input and output capacitors should be larger values and lower 18 LED=20mA VIN=2.7V, 2x mode LED Current (mA) 16 ESR capacitors. However, the larger output capacitor values will increase the soft-start time. The lower charge pump flying capacitors values and ESR improve the efficiency, but lower capacitor values may limit the LED’s currents at low input voltage. It is recommended that the low ESR and low variation over 14 f=100Hz 12 10 8 f=10kHz 6 4 temperature, such as the ceramic capacitors with X7R or X5R and the value is 1µF for the input capacitor, out- f=40kHz 2 f=50kHz 0 put capacitor, and the charge pump flying capacitors. 0 10 20 30 40 50 60 70 80 90 100 Dimming Duty (%) Brightness Control Figure 3. PWM Dimming Frequency vs. LED Current 1. PWM dimming using CTRL0, CTRL1, CTRL2 The first method for dimming the LEDs is to apply a PWM 2. Analog dimming with analog voltage The second method for dimming the LEDs is to apply a signal into the CTRL0, CTRL1, and CTRL2 pins. Figure 2 shows the application circuit. The average LED current is voltage through a resistor into the ISET pin. The variation of LED current is proportional to the variation of the ana- proportional to the PWM signal duty cycle. Note that the frequency of PWM signal will affect the minimum dim- log voltage. If the resistor values are chosen correctly, the ming duty. Figure 3 shows the LED current vs. dimming frequency and dimming duty, the recommend dimming analog control voltage varies the output current from 0mA to full LED current. Figure4 shows the application circuit. frequency is below 10kHz. The average LED current is calculated by the following equation: See the table2 and choose the required maximum LED current and the corresponsive RSET value, using the be- ILED( avg) = toff × ILED(max) low equation to calculate the values of R1 and R2, note that the VADJ will need to be greater than 1.2V. ton + toff VADJ ( VADJ − VISET ) VADJ = + R1 R2 R SET Where: ILED(max) is programmed LED current by ISET pin toff is the off time of the PWM signal Where: VISET = 1.2V ton is the on time of the PWM signal VIN VADJ = the analog voltage for dimming the LEDs RSET = the equivalent RSET resistance (see table 2). APW7008 APW7008 OFF ON PWM 1 ISET EN R2 2 3 4 CTRL0 5 VADJ CTRL1 R1 CTRL2 Figure 4. Analog Voltage Dimming Application Circuit Figure 2. PWM Dimming Application Circuit Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 15 www.anpec.com.tw APW7008 Application Information (Cont.) Brightness Control (Cont.) Layout Consideration 3. Digital dimming with external NMOS transistors The third method for dimming the LEDs is to change the The APW7008 is a high frequency charge pump for white LED driver and requires some care when laying out the equivalent resistance for RSET with the external NMOS transistors. The equivalent resistance is the parallel printed circuit board. The metal GND pad of the bottom of the package must be soldered to the PCB and con- combinations of the R1, R2, R3, and R4. R4 is always connected and selected for the minimum LED current. nected to the GND plane on the backside through several thermal vias. Place the CIN, COUT, C1, and C2 as Figure 5 shows the application circuit. close to IC as possible for reducing the switching noise. APW7008 ISET 5 R1 R2 R3 R4 Figure 5. Digital Dimming Application Circuit 4. PWM dimming with EN pin Another method for dimming the LEDs is to apply a PWM signal into the EN pin. The average LED current is proportional to the PWM signal duty cycle. Note that the frequency of PWM signal will affect the minimum dimming duty. The recommend dimming frequency is between 100Hz and 1kHz. The average LED current is calculated by the following equation: ILED(avg ) = ton × ILED(max) ton + toff Where: ILED(max) is programmed LED current by ISET pin toff is the off time of the PWM signal ton is the on time of the PWM signal Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 16 www.anpec.com.tw APW7008 Package Information QFN3x3-16 A b E D Pin 1 D2 A1 A3 L K E2 Pin 1 Corner e S Y M B O L QFN3x3-16 INCHES MILLIMETERS MIN. MAX. 1.00 0.031 0.039 0.05 0.000 0.002 0.012 MIN. MAX. A 0.80 A1 0.00 A3 0.20 REF 0.008 REF b 0.18 0.30 0.007 D 2.90 3.10 0.114 0.122 D2 1.50 1.80 0.059 0.071 0.122 0.071 E 2.90 3.10 0.114 E2 1.50 1.80 0.059 0.50 0.012 e 0.020 BSC 0.50 BSC L 0.30 K 0.20 0.020 0.008 Note : 1. Followed from JEDEC MO-220 WEED-4. Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 17 www.anpec.com.tw APW7008 Carrier Tape & Reel Dimensions P0 P2 P1 A B0 W F E1 OD0 K0 A0 A OD1 B B T SECTION A-A SECTION B-B H A d T1 Application QFN3x3-16 A H T1 C d D 12.4+2.00 13.0+0.50 -0.00 -0.20 1.5 MIN. 330±2.00 50 MIN. P0 P1 P2 D0 D1 4.0±0.10 8.0±0.10 2.0±0.05 1.5+0.10 -0.00 1.5 MIN. W E1 20.2 MIN. 12.0±0.30 1.75±0.10 T A0 B0 F 5.5±0.05 K0 0.6+0.00 -0.40 3.30±0.20 3.30±0.20 1.30±0.20 (mm) Devices Per Unit Package Type Unit Quantity QFN3x3-16 Tape & Reel 3000 Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 18 www.anpec.com.tw APW7008 Taping Direction Information QFN3x3-16 USER DIRECTION OF FEED Classification Profile Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 19 www.anpec.com.tw APW7008 Classification Reflow Profiles Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly 100 °C 150 °C 60-120 seconds 150 °C 200 °C 60-120 seconds 3 °C/second max. 3°C/second max. 183 °C 60-150 seconds 217 °C 60-150 seconds See Classification Temp in table 1 See Classification Temp in table 2 Time (tP)** within 5°C of the specified classification temperature (Tc) 20** seconds 30** seconds Average ramp-down rate (Tp to Tsmax) 6 °C/second max. 6 °C/second max. 6 minutes max. 8 minutes max. Preheat & Soak Temperature min (Tsmin) Temperature max (Tsmax) Time (Tsmin to Tsmax) (ts) Average ramp-up rate (Tsmax to TP) Liquidous temperature (TL) Time at liquidous (tL) Peak package body Temperature (Tp)* Time 25°C to peak temperature * Tolerance for peak profile Temperature (Tp) is defined as a supplier minimum and a user maximum. ** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. Table 1. SnPb Eutectic Process – Classification Temperatures (Tc) Package Thickness <2.5 mm ≥2.5 mm Volume mm <350 235 °C 220 °C 3 Volume mm ≥350 220 °C 220 °C 3 Table 2. Pb-free Process – Classification Temperatures (Tc) Package Thickness <1.6 mm 1.6 mm – 2.5 mm ≥2.5 mm Volume mm <350 260 °C 260 °C 250 °C 3 Volume mm 350-2000 260 °C 250 °C 245 °C 3 Volume mm >2000 260 °C 245 °C 245 °C 3 Reliability Test Program Test item SOLDERABILITY HOLT PCT TCT ESD Latch-Up Method JESD-22, B102 JESD-22, A108 JESD-22, A102 JESD-22, A104 MIL-STD-883-3015.7 JESD 78 Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 20 Description 5 Sec, 245°C 1000 Hrs, Bias @ 125°C 168 Hrs, 100%RH, 2atm, 121°C 500 Cycles, -65°C~150°C VHBM≧2KV, VMM≧200V 10ms, 1tr≧100mA www.anpec.com.tw APW7008 Customer Service Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 2F, No. 11, Lane 218, Sec 2 Jhongsing Rd., Sindian City, Taipei County 23146, Taiwan Tel : 886-2-2910-3838 Fax : 886-2-2917-3838 Copyright ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 21 www.anpec.com.tw