APW7001 1X/1.5X/2X Charge Pump White LED Driver for Main and Sub-Displays Features General Description • • • The APW7001 is a high efficiency charge pump white LED driver; the device drives up to four white LEDs in the ±1.5% LED Current Matching Powers Main and Sub-Display LEDs main display and up to two white LEDs in the sub-display with regulated constant current for uniform intensity. The High Efficiency Up to 90% Over Li-ion Battery supply voltage ranges from 2.7V to 5.5V and it is optimized for a Li-ion battery application. The APW7001 op- Discharge Output Current Up to 30mA per LED erates in 1x, 1.5x, and 2x charge pump modes and automatically switches the charge pump modes depend on 2.7V to 5.5V Operating Voltage the input voltage to maintain the required power for high power efficiency. The APW7001 provides up to 30mA per 1x/1.5x/2x Charge Pump Modes Low Shutdown Current: 2µA Maximum LED and allows several methods such as the PWM signals on the ENM pin for main-display dimming and on Low Input Ripple and EMI the ENS pin for sub-display dimming. The two control logic pins, ENM and ENS, allow disabling or enabling the Internal Soft-Start Limits Inrush Current Short Circuit Current Limit main and sub-displays. The supply current is only 2mA in 2x mode, and the ENM and ENS are kept low for 20ms Thermal Shutdown Protection will allow the device to enter shutdown mode with 2µA quiescent current. The APW7001 features current limit Output Over-Voltage Protection 16-pin QFN Package and short circuit protection. The APW7001 switches at 1MHz frequency and only requires four 1µF ceramic ca- Lead Free and Green Devices Available (RoHS Compliant) pacitors and one resistor, and ensures low input current ripple and EMI. The APW7001 is available in a 16-pin QFN package. Applications PDA, Handheld Computer ILED 1 ILED 2 Portable Device ILED 3 Pin Configuration Cellular Phone White LED Back Light ILED 4 16 15 14 13 1 ILED 6 2 ENM 3 ENS 4 12 GND Metal GND Pad (Bottem) 11 C110 C1+ 9 5 6 7 8 C2+ ILED 5 VIN DSC VOUT • • • • ISET • • • • • • • • • • • C2- APW7001 QFN4x4-16 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.4 - Oct., 2009 1 www.anpec.com.tw APW7001 Ordering and Marking Information Package Code QA : QFN4x4-16 Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device APW7001 Assembly Material Handling Code Temperature Range Package Code APW7001 QA : APW7001 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-STD-020D 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) Rating Unit VOUT to GND Parameter -0.3 to +6 V VIN to GND -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to 2 V VC1+, VC1-, C1+, C1-, C2+, C2- to GND VC2+, VC2VILED1-6 ILED1-6 to GND VENM, VENS ENM, ENS to GND VISET TJ ISET to GND Maximum Junction Temperature TSTG Storage Temperature TSDR Maximum Lead Soldering Temperature, 10 Seconds +150 °C -65 ~ 150 °C 260 °C Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristics (Note 2) Symbol θJA Parameter Thermal Resistance -Junction to Ambient QFN4x4-16 Typical Value Unit 40 °C/W Note 2 : θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. 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 Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 2 www.anpec.com.tw APW7001 Recommended Operating Conditions (Cont.) Symbol IOUT Parameter Rating 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 TA Unit mA 90 Ambient Temperature °C -40 to 85 Electrical Characteristics VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1µF (ESR = 0.03Ω), ILED = 20mA, T A = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Symbol VIN VUVLO Parameter Test Conditions 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 FOSC ROUT APW7001 Unit Min. Typ. Max. 2.7 - 5.5 2.2 2.4 2.6 V - 50 - mV V in 1.5x/2x mode - 2 4 mA No switching in 1x mode - 0.5 1 mA EN=0 - 0.1 2 µA 5mA<ILED<30mA (Note 3) - ±2 ±8 % 5mA<ILED<30mA (Note 4) ISET Current - ±1.5 ±5 % 5 - 1000 µA 370 400 420 ISET to LED Current Ratio ILED / (1.2V/RSET) 5mA<ILED<30mA, TA = +25°C ILED Threshold Voltage VILED falling - 100 - mV 1.5x mode to 1x mode Transition Hysteresis VIN rising, VIN-VOUT - 300 - mV 2x mode to 1.5x mode Transition Hysteresis VIN rising, VOUT-VIN - 300 - mV MHz Switching Frequency Open Loop VOUT Resistance ISHORT Short Circuit Current Limit VOVP Output Over Voltage Protection 0.8 1 1.2 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 Ω - 40 - mA 5 5.5 6 V VIH Logic Pins High Threshold 1.3 0.7 - V VIL Logic Pins Low Threshold - 0.6 0.3 V 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) Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 3 www.anpec.com.tw APW7001 Typical Operating Characteristics Efficiency vs. Input Voltage 100 90 90 80 80 70 70 Efficiency (%) Efficiency (%) Efficiency vs. Input Voltage 100 60 6 LEDs at 20mA VF=3.1V 50 60 40 40 30 30 20 6 LEDs at 15mA VF=3.1V 50 20 2.5 3 3.5 4 4.5 2.5 3 Input Voltage (V) 4.5 Efficiency vs. Input Voltage 100 100 90 90 80 80 Efficiency (%) Efficiency (%) 4 Input Voltage (V) Efficiency vs. Input Voltage 70 60 6 LEDs at 20mA VF=3.3V 50 3.5 70 60 6 LEDs at 15mA VF=3.3V 50 40 40 30 30 20 20 2.5 3 3.5 Input Voltage (V) 4 2.5 4.5 3 3.5 4 4.5 Input Voltage (V) Input Current vs. Input Voltage Input Current vs. Input Voltage 300 200 6 LEDs at 20mA 175 6 LEDs at 15mA Input Current (mA) Input Current (mA) 250 200 150 150 125 100 75 50 100 2.5 3 3.5 4 4.5 2.5 5 Input Voltage (V) Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 3 3.5 4 4.5 5 Input Voltage (V) 4 www.anpec.com.tw APW7001 Typical Operating Characteristics (Cont.) LED Current vs. Input Voltage LED Current (mA) LED Current (mA) 20 19 18 16 15 14 17 13 16 12 2.5 3 3.5 4 4.5 Input Voltage (V) 5 2.5 5.5 3 3.5 4 4.5 5 5.5 Input Voltage (V) LED Current vs. Temperature 21 6 LEDs at 15mA 17 6 LEDs at 20mA 21 LED Current vs. Input Voltage 18 22 LED Current vs. Temperature 22 6 LEDs at 20mA VIN=3.3V, 1.5x mode 6 LEDs at 20mA VIN=4V, 1x mode 21 LED Current (mA) LED Current (mA) 20 19 18 20 19 18 17 17 -40 -20 0 20 40 60 80 -40 100 120 140 -20 0 20 Temperature (°C) LED Current vs. Temperature 60 80 100 120 140 Quiescent Current vs. Input Voltage 22 3 6 LEDs at 20mA VIN=3V, 2x mode 6 LEDs at 15mA VF=3.3V 2.5 Quiescent Current (mA) 21 LED Current (mA) 40 Temperature (°C) 20 19 18 2 1.5 1 0.5 0 2.5 17 -40 -20 0 20 40 60 80 100 120 140 Temperature (°C) Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 3 3.5 4 4.5 Input Voltage(V) 5 www.anpec.com.tw APW7001 Typical Operating Characteristics (Cont.) Quiescent Current vs. Temperature Logic Threshold Voltage vs. Input Voltage 700 1.2 in 1x mode VIN=4V Logic Threshold Voltage (V) Quiescent Current (mA) 600 500 400 300 1.1 high threshold 1 0.9 low threshold 0.8 0.7 200 -40 -20 0 20 40 60 80 2.5 100 120 140 3 3.5 4 4.5 Input Voltage (V) Temperature (°C) Switching Frequency vs. Input Voltage 5.5 Switching Frequency vs. Temperature 1200 1200 in 2x mode VIN=4V in 2x mode 1150 1100 Switching Frequency (kHz) Switching Frequency (kHz) 5 1100 1050 1000 950 900 1000 900 800 700 600 850 500 800 2.5 3 3.5 4 -40 -20 4.5 Input Voltage (V) Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 0 20 40 60 80 100 120 140 Temperature (°C) 6 www.anpec.com.tw APW7001 Typical Operating Characteristics (Cont.) Start Up in 1.5x Mode Start Up in 1x Mode 6 LEDs at 20mA V F=3.1V, VIN =4V IIN (100mA/div) 6 LEDs at 20mA VF=3.1V, VIN=3.3V IIN (200mA/div) V OUT (2V/div) VOUT (2V/div) ENS=ENM (5V/div) ENS=ENM (5V/div) ILED (20mA/div) ILED (20mA/div) TIME (0.1ms/div) TIME (0.1ms/div) Start Up in 2x Mode Dimming in 1x Mode ILED (20mA/div) IIN (200mA/div) 6 LEDs at 20mA VF =3.1V, VIN =2.7V 6 LEDs at 20mA, VF =3.1V, VOUT (1V/div) VIN =4V f=200Hz, ENS=high VOUT (2V/div) ENM (2V/div) ENS=ENM (5V/div) ILED (20mA/div) TIME (0.1ms/div) Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 TIME (2ms/div) 7 www.anpec.com.tw APW7001 Typical Operating Characteristics (Cont.) Dimming in 2x Mode Dimming in 1.5x Mode ILED (20mA/div) ILED (20mA/div) 6 LEDs at 20mA, VF =3.1V, 6 LEDs at 20mA, VF=3.1V, VOUT (1V/div) VIN=3.3V, f=200Hz, ENS=high VIN =2.7V, f=200Hz, ENS=high VOUT (1V/div) ENM (1V/div) ENM (1V/div) TIME (2ms/div) TIME (2ms/div) OVP Even with LED Open Circuit Line Transient Response in 1x to 1.5x Mode 6 LEDs at 20mA, V F =3.1V VIN =3.2V to 3.8V ILED (10mA/div) VIN (1V/div) VOUT (1V/div) VOUT (1V/div) V IN (1V/div) 6 LEDs at 20mA VF =3.1V, VIN =4V LED1 is open ILED (20mA/div) TIME (0.1ms/div) TIME (0.2ms/div) Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 8 www.anpec.com.tw APW7001 Typical Operating Characteristics (Cont.) Line Transient Response in 1.5x to 2x Mode 6 LEDs at 20mA, VF =3.1V V IN =2.8V to 3.4V VIN (1V/div) VOUT (1V/div) ILED (20mA/div) TIME (0.1ms/div) Pin Description PIN FUNCTION NO. NAME 1 ILED5 2 ILED6 3 ENM On/Off and Dimming Control for LED1-4 (Main-Display). 4 ENS On/Off and Dimming Control for LED5-6 (Sub-Display). 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 anodes. 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 13 ILED1 14 ILED2 15 ILED3 16 ILED4 Sub-Display 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. Device Ground Pin. Main-Display 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.4 - Oct., 2009 9 www.anpec.com.tw APW7001 Block Diagram C1+ C2+ C1- C2- VOUT 1x/1.5x/2x MODE CHARGE PUMP AND GATE CONTROL LOGIC VIN POR & SOFT-START CURRENT LIMIT - + - - + - + + ENM SUB CONTROL ENS MAIN CONTROL 0.18V 1MHz OSCILLATOR 0.1V 1.2V MODE SELECT AND MIN ILED SELECT CONTROLLED CURRENT MIRROR ILED1 ILED2 + 1.2V ILED3 - Error Amp ISET ILED4 ILED5 ILED6 + + + + + + - - - - - - GND Typical Application Circuit COUT 1µF 16 15 14 13 ILED4 ILED3 ILED2 ILED1 ILED5 GND 12 1 2 3 Digital Inputs 4 ILED6 C1- 11 APW7001 ENM C1+ 10 ENS ISET VOUT VIN 5 C2 1µF 6 7 C29 C2+ 8 C1 1µF Battery RSET CIN 1µF Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 10 www.anpec.com.tw APW7001 Function Description Soft-Start The APW7001 provides the soft-start function to limit the VF is the forward voltage of LED IOUT is the output current inrush current during startup. When the input voltage is supplied to the device and exceeds the UVLO voltage, the ROUT1X is the output impedance in 1x mode = 1.6Ω ROUT1.5X is the output impedance in 1.5x mode = 7Ω output capacitor is charged directly from input with a limited current source. Approximate 100µs after the output ENM/ENS Control Logic Pins The APW7001 provides two logic input pins to enable or disable the main-display and sub-display. When the ENM voltage approaches the input voltage, the device starts to provide the programmed LED current and determines or ENS is high, the VOUT is supplied and the respective LEDs are enabled. When ENM or ENS is low, the respec- which of 1x, and 1.5x, or 2x mode is required. When the programmed LED current can be reached with 1x mode, tive LEDs are disabled. If both logic pins are kept low for more than 20ms, the APW7001 enters shutdown mode. the soft-start is completed and the device operates in 1x mode. When the programmed LED current cannot be In shutdown mode, all internal control circuits are turned off and the quiescent current is below 2µA. When the reached, the charge pump goes into 1.5x mode. If the 1.5x mode charge pump cannot suffice for the LED cur- device exits shutdown mode, the output has the soft-start function as the input voltage startup. rent need, the charge pump will switch to 2x mode. Mode Transition The APW7001 operates in 1x, 1.5x, and 2x charge pump modes and automatically switches the charge pump modes depend on the input voltage to maintain the required power for high power efficiency. If the APW7001 operates in 1x mode, the VOUT is pulled up to VIN. When VIN decreases, the VILED will decease to maintain the regulated LED current. Until VILED is below 100mV, the device ENM ENS 0 (for more than 20ms) 0 (for more than 20ms) 1 0 0 1 1 1 LED Status IC enters shutdown LED1, 2, 3, 4 are turned on / LED5, 6 are turned off LED1, 2, 3, 4 are turned off / LED5, 6 are turned on LED1, 2, 3, 4 are turned on / LED5, 6 are turned on Table 1. The Truth Table of ENM and ENS will switch to 1.5x mode. In 1.5x mode, the VILED is regulated to 0.18V, and the output voltage is VF+0.18V. If VIN LED Current Setting Connect a resistor from ISET pin to GND to set the LED continues to decrease until VILED is below 100mV again, the device will switch to 2x mode. When the VIN rises and current. The ISET voltage is 1.2V, and the LED current is typically 400 times the current through the ISET resistor. reaches by approximately VOUT-300mV, the APW7001 switches back to 1.5x mode. If the VIN continues to rise The LED current is given by: and reaches by approximately VOUT+300mV, the APW7001 switches back to 1x mode. The 2x charge pump RSET = is enough to suffice the White LED for a Li-ion battery application. The APW7001 ensures that in the 1x mode 400 × 1.2V ILED The APW7001 provides up to 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 accu- for as long as possible to increase the efficiency and extend the operating range by using the 2x mode. The racy of ±8%. If high accuracy is required, using a 1% precision surface mount resistor for the need. transition voltages from 1x to 1.5x, and 1.5x to 2x are given by: ILED (mA) 5 10 15 20 30 VTRANS1X = VF + 0.1V + (IOUT x ROUT1X) VTRANS1.5X = [VF + 0.1V + (IOUT x ROUT1.5X)] / 1.5 where RSET (kΩ) 92 47 32 24 16.5 Table 2. RSET Value Selection Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 11 www.anpec.com.tw APW7001 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 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.4 - Oct., 2009 12 www.anpec.com.tw APW7001 Application Information Capacitor Selection 20 For lower input and output voltage ripples, both input and 18 output capacitors should be larger values and lower ESR capacitors. However, the larger output capacitor values 16 will increase the soft-start time. The lower charge pump flying capacitors values and ESR improve the efficiency, 12 LED=20mA in 2x mode LED Current (mA) 14 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 temperature, such as the ceramic capacitors with f=100Hz 10 8 f=10kHz 6 f=40kHz 4 2 X7R or X5R and the value is 1µF for the input capacitor, output capacitor, and the charge pump flying capacitors. f=50kHz 0 0 10 20 30 Brightness Control 70 80 90 100 ENM tional to the PWM signal duty cycle. Note that the frequency of PWM signal will affect the minimum dimming duty. ILED (main) Figure 3 shows the LED current vs. dimming frequency and dimming duty, the recommend dimming frequency Bright ness (main) 100% 25% is below 10kHz. The PWM signal can either be applied to ENM or ENS, or both inputs can be tied together and the ENS PWM signal can be applied to both pins. Table 3 shows the truth table of ENM and ENS dimming control. The ILED (sub) Bright ness (sub) average LED current is calculated by the following equation: 100% 75% 50% 20ms ton × ILED(max) ton + toff Shutdown Figure 4. ENM/ENS Timing Where: ILED(max) is programmed LED current by ISET pin ENM toff is the off time of the PWM signal ton is the on time of the PWM signal ON APW7001 OFF 3 ENM ON OFF PWM 60 VOUT signal into the ENM or/and ENS pins. Figure 2 shows the application circuit. The average LED current is propor- PWM 50 Figure 3. PWM Dimming Frequency vs. LED Current 1. PWM dimming using ENM, or/and EMS The first method for dimming the LEDs is to apply a PWM ILED(avg ) = 40 Dimming Duty (%) 4 ENS 0 PWM PWM 0 1 PWM PWM 1 PWM PWM LED Status LED1, 2, 3, 4 are turned off LED5, 6 are PWM dimming LED1, 2, 3, 4 are PWM dimming LED5, 6 are turned off LED1, 2, 3, 4 are turned on LED5, 6 are PWM dimming LED1, 2, 3, 4 are PWM dimming LED5, 6 are turned on LED1, 2, 3, 4 are PWM dimming LED5, 6 are PWM dimming Table 3. The Truth Table of ENM and ENS ENS Dimming Control Figure 2. PWM Dimming Application Circuit Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 13 www.anpec.com.tw APW7001 Application Information (Cont.) Brightness Control (Cont.) 4. PWM dimming with EN pin Another method for dimming the LEDs is to apply a PWM 2. Analog Dimming With Analog Voltage signal into the EN pin. The average LED current is proportional to the PWM signal duty cycle. Note that the fre- The second method for dimming the LEDs is to apply a voltage through a resistor into the ISET pin. The variation quency of PWM signal will affect the minimum dimming duty. The recommend dimming frequency is between of LED current is proportional to the variation of the analog voltage. If the resistor values are chosen correctly, the 100Hz and 1kHz. The average LED current is calculated by the following equation: analog control voltage varies the output current from 0mA to full LED current. Figure 5 shows the application circuit, and the LED current is calculated by the following equation: I = ton × ILED(max) ton + toff Where: ILED(max) is programmed LED current by ISET pin 1.2V − VADJ 1.2V ILED = 400 × + R2 R1 toff is the off time of the PWM signal ton is the on time of the PWM signal APW7001 ISET R2 LED(avg) Layout Consideration 5 The APW7001 is a high frequency charge pump for white LED driver and requires some care when laying out the VADJ R1 printed circuit board. The metal GND pad of the bottom of the package must be soldered to the PCB and connected to the GND plane on the backside through several ther- Figure 5. Analog Voltage Dimming Application Circuit mal vias. Place the CIN, COUT, C1, and C2 as close to IC as possible for reducing the switching noise. 3. Digital dimming with external NMOS transistors The third method for dimming the LEDs is to change the equivalent resistance for RSET with the external NMOS transistors. The equivalent resistance is the parallel combinations of the R1, R2, R3, and R4. R4 is always connected and selected for the minimum LED current. Figure 6 shows the application circuit. APW7001 ISET 5 R1 R2 R3 R4 Figure 6. Digital Dimming Application Circuit Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 14 www.anpec.com.tw APW7001 Package Information QFN4x4-16 D b E A Pin 1 D2 A1 A3 L K E2 Pin 1 Corner e S Y M B O L A A1 QFN4x4-16 MILLIMETERS INCHES MIN. MAX. MIN. MAX. 0.80 1.00 0.031 0.039 0.05 0.000 0.002 0.00 A3 0.20 REF 0.008 REF b 0.25 0.35 0.010 0.014 D 3.90 4.10 0.154 0.161 D2 2.50 2.80 0.098 0.110 0.161 0.110 E 3.90 4.10 0.154 E2 2.50 2.80 0.098 e 0.65 BSC L 0.30 K 0.20 Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 0.026 BSC 0.012 0.50 0.020 0.008 15 www.anpec.com.tw APW7001 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 QFN4x4-16 A H T1 C d D W E1 F 330.0±2.00 50 MIN. 12.4+2.00 -0.00 13.0+0.50 -0.20 1.5 MIN. 20.2 MIN. 12.0±0.30 1.75±0.10 5.5±0.05 P0 P1 P2 D0 D1 T A0 B0 K0 4.0±0.10 8.0±0.10 2.0±0.05 1.5+0.10 -0.00 1.5 MIN. 0.6+0.00 -0.40 4.30±0.20 4.30±0.20 1.30±0.20 (mm) Devices Per Unit Package Type Unit Quantity QFN4x4-16 Tape & Reel 3000 Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 16 www.anpec.com.tw APW7001 Taping Direction Information QFN4x4-16 USER DIRECTION OF FEED Classification Profile Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 17 www.anpec.com.tw APW7001 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 HBM MM Latch-Up Method JESD-22, B102 JESD-22, A108 JESD-22, A102 JESD-22, A104 MIL-STD-883-3015.7 JESD-22, A115 JESD 78 Copyright ANPEC Electronics Corp. Rev. A.4 - Oct., 2009 18 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 APW7001 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.4 - Oct., 2009 19 www.anpec.com.tw