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APW7008
1X/1.5X/2x Charge Pump White LED Driver
Features
* * * * * * * * * * * * * *
1.5% LED Current Matching High Efficiency Up to 90% Over Li-ion Battery Discharge Output Current Up to 30mA per LED 2.7V to 5.5V Operating Voltage Allow to Turn On or Off a Combination of LEDs 1x/1.5x/2x Charge Pump Modes Low Shutdown Current: 2A Maximum Low Input Ripple and EMI Internal Soft-Start Limits Inrush Current Short Circuit Current-Limit Thermal Shutdown Protection Output Over-Voltage Protection 3mmx3mm 16-pin QFN (QFN3X3-16) Package Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APW7008 is a high efficiency charge pump white LED driver; the device drives up four white LEDs with regulated constant current for uniform intensity. The supply voltage ranges from 2.7V to 5.5V and it is optimized for a Li-ion battery application. The APW7008 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. The APW7008 provides up to 30mA per LED for a total of 120mA and allows several methods, such as a PWM signal on the CTRL0 pin for LED dimming. Three control logic pins allow to disable or enable a combination of LEDs. The supply current is only 2mA in 2x mode, and the EN pin allows the device to enter shutdown mode with 2A quiescent current. The APW7008 switches at 1MHz frequency and only requires four 1F ceramic capacitors and one resistor, and ensures low input current ripple and EMI. The APW7008 is available in a 16-pin QFN package.
Pin Configuration
ILED1 ILED2 ILED3 ILED4 12 GND Metal GND Pad (Bottom) 11 C110 C1+ 9 5 ISET 6 VOUT 7 VIN 8 C2+ C2-
Applications
* * * *
Cellular Phone White LED Back Light Portable Device PDA and Handheld Computer DSC
EN CTRL0 CTRL1 CTRL2 1 2 3 4
16 15
14 13
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 (c) ANPEC Electronics Corp. Rev. A.3 - Feb., 2009 1 www.anpec.com.tw
APW7008
Ordering and Marking Information
APW7008 Assembly Material Handling Code Temperature Range Package Code APW 7008 XXXXX 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 XXXXX - Date Code
APW7008 QA :
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 VOUT to GND VIN to GND
(Note 1, 2)
Rating -0.3 to +6 -0.3 to +6 -0.3 to +6 -0.3 to +6 -0.3 to +6 -0.3 to 2 +150 -65 ~ 150 260 Unit V V V V V V C C C
Parameter
VC1+, VC1-, VC2+, VC2- C1+, C1-, C2+, C2- to GND VILED1-4 VCTRL0/1/2, VEN VISET TJ TSTG TSDR ILED1-4 to GND CTRL0/1/2, EN to GND ISET to GND Maximum Junction Temperature Storage Temperature 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) / JA ;TJ=125C. Exceeding the maximum allowable power dissipation will result in excessive die temperature.
Thermal Characteristics
Symbol R JA Parameter Thermal Resistance - Junction to Ambient QFN3x3-16 Typical Value 40 Unit C/W
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APW7008
Recommended Operating Conditions
Symbol VIN VOUT ILED Input Voltage Output Voltage LED Current Output Current, VIN>3.5V, VF=3.1V, 1x Mode IOUT Output Current, 3.5V3.1V, VF=3.1V, 1.5x Mode Output Current, 3.1V2.8V, VF=3.1V, 2x Mode TA Ambient Temperature Parameter Rating 2.8 to 4.5 3 to 4 5 to 30 180 120 90 -40 to 85 C mA Unit V V mA
Electrical Characteristics
VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1F (ESR = 0.03), ILED = 20mA, TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.
APW7008 Symbol VIN VUVLO Parameter Input Voltage Under-Voltage Lockout Threshold Under-Voltage Lockout Hysteresis in 1.5x/2x mode IQ Quiescent Current No switching in 1x mode EN=0 ILED-ERR LED Current Accuracy Current Matching IISET ISET Current ISET to LED Current Ratio VILED-TH ILED Threshold Voltage 1.5x mode to 1x mode Transition Hysteresis 2x mode to 1.5x mode Transition Hysteresis FOSC Switching Frequency 1x mode (VIN-VOUT) / IOUT ROUT Open Loop VOUT Resistance 1.5x mode (1.5xVIN-VOUT) / IOUT 2x mode (2xVIN-VOUT) / IOUT ISHORT VOVP VIH Short Circuit Current-Limit OVP Threshold Logic Pins High Threshold VOUT < 1V IILED / (1.2V / REST) 5mA(Note 3) (Note 4)
Test Conditions Min. 2.7 VIN falling 2.2 5 370 0.8 5 1.3 Typ. 2.4 50 2 0.5 0.1 2 1.5 400 100 300 300 1 1.6 7 16 40 5.5 0.7 Max. 5.5 2.6 4 1 2 8 5 1000 420 1.2 3 12 28 6 -
Unit V V mV mA mA A % % A
mV mV mV MHz
mA
V
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APW7008
Electrical Characteristics (Cont.)
VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1F (ESR = 0.03), ILED = 20mA, TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.
APW7008 Symbol VIL IIH IIL Parameter Logic Pins Low Threshold Logic Pins High Current Logic Pins Low Current Thermal Shutdown Thermal Shutdown Hysteresis
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)
Test Conditions Min. VIH = VIN VIL = GND Typ. 0.6 150 20 Max. 0.3 1 1 -
Unit V A A C C
Pin Description
PIN FUNCTION NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NAME EN CTRL0 CTRL1 CTRL2 ISET VOUT VIN C2+ C2C1+ C1GND ILED4 ILED3 ILED2 ILED1 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. LED Current Set Input. Connect a resistor from ISET to GND to set the LED current. VISET is typically 1.2V. Output Voltage Pin. Connect VOUT to the LED anode. Connect a 1F capacitor from VOUT to GND. Supply Voltage Input Pin. Connect a 1F capacitor from VIN to GND. Bucket Capacitor1 Positive Terminal. Connect a 1F capacitor from C2+ to C2-. Bucket Capacitor1 Negative Terminal. Connect a 1F capacitor from C2+ to C2-. Bucket Capacitor1 Positive Terminal. Connect a 1F capacitor from C1+ to C1-. Bucket Capacitor1 Negative Terminal. Connect a 1F capacitor from C1+ to C1-. Device Ground Pin. LED On/Off Control Pin. Allow disabling or enabling a combination of LEDs. 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.
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APW7008
Block Diagram
C1+ C1C2+ C2-
VIN
1x/1.5x/2x MODE CHARGE PUMP AND GATE CONTROL LOGIC
VOUT
EN
POR & SOFT-START
CURRENT LIMIT + + + + -
CTRL0 CTRL1 CTRL2 LED ON/OFF CONTROL
0.18V 1MHz OSCILLATOR
0.1V MODE SELECT AND MIN ILED SELECT
CONTROLLED CURRENT MIRROR
1.2V + + + + -
Error Amp ISET
-
GND
Typical Application Circuit
COUT 1F Digital Inputs
16 15 14 13
ILED1 ILED2 ILED3 ILED4 EN GND 12 1
2 3 4
CTRL0 APW7008 CTRL1 CTRL2 ISET VOUT VIN
5 6 7
C1- 11 C1+ 10 C2C2+
8 9
RSET CIN 1F
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1.2V ILED1 ILED2 ILED3 ILED4
-
+
C2 1F
C1 1F Battery
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APW7008
Typical Operating Characteristics
Efficiency vs. Input Voltage
100 90 80
100 90 80
Efficiency vs. Input Voltage
Efficiency (%)
Efficiency (%)
70 60 50 40 30 20 2.5 3 3.5 4 4.5 4 LEDs at 20mA VF=3.1V
70 60 50 40 30 20 2.5 3 3.5 4 4.5 4 LEDs at 15mA VF=3.1V
Input Voltage (V)
Input Voltage (V)
Efficiency vs. Input Voltage
100 90 80
100 90 80
Efficiency vs. Input Voltage
Efficiency (%)
Efficiency (%)
70 60 50 40 30 20 2.5 3 3.5 4 4.5 4 LEDs at 20 15mA VF=3.3V
70 60 50 40 30 20 2.5 3 3.5 4 4.5 4 LEDs at 15 20mA VF=3.3V
Input Voltage (V)
Input Voltage (V)
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APW7008
Typical Operating Characteristics (Cont.)
Input Current vs. Input Voltage
200
4 LEDs at 30mA
Input Current (mA)
Input Current vs. Input Voltage
260 240 220
Input Current (mA)
180 160 140 120 100 80 60
4 LEDs at 20mA
200 180 160 140 120 100 2.5 3 3.5 4 4.5 5
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
LED Current vs. Input Voltage
LED Current vs. Input Voltage
21
32 31
LED Current (mA)
20
LED Current (mA)
30 29 28 27 26 4 LEDs at 30mA
19 4 LEDs at 20mA 18
17
16 2.5 3 3.5 4 4.5 5 5.5
25 2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Input Voltage (V)
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APW7008
Typical Operating Characteristics (Cont.)
Logic Threshold Voltage vs. Input Voltage
1.2
Switching Frequency vs. Input Voltage
1200 1150 in 2x mode ILED=20mA
Logic Threshold Voltage(V)
high threshold
Switching Frequency (kHz)
1.1
1100 1050 1000 950 900 850
1
0.9 low threshold 0.8
0.7 2.5 3 3.5 4 4.5 5 5.5
800 2.5 3 3.5 4 4.5
Input Voltage (V)
Input Voltage (V)
Switching Frequency vs. Temperature
LED Current vs. Temperature
1200 1100 1000 in 2x mode VIN=4V
21 4 LEDs at 20mA VIN=4V 20
Switching Frequency (kHz)
900 800 700 600 500 -40 -20 0 20 40 60 80 100 120 140
LED Current (mA)
19
18
17 -40 -20 0 20 40 60 80 100 120 140
Temperature (C)
Temperature (C)
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APW7008
Typical Operating Characteristics (Cont.)
LED Current vs. Temperature
22 4 LEDs at 20mA VIN=3.3V 21
21 22
LED Current vs. Temperature
4 LEDs at 20mA VIN=2.7V
LED Current (mA)
20
LED Current (mA)
-40 -20 0 20 40 60 80 100 120 140
20
19
19
18
18
17
17 -40 -20 0 20 40 60 80 100 120 140
Temperature (C)
Temperature (C)
Quiescent Current vs. Temperature
400 in 1x mode VIN=4V
Quiescent Current vs. Input Voltage
3 2.75 2.5
Quiescent Current (mA)
Quiescent Current (mA)
4 LEDs at 20mA VF=3.3V
350
2.25 2 1.75 1.5 1.25 1 0.75 0.5 0.25
300
250
200 -40 -20 0 20 40 60 80 100 120 140
0 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
Input Voltage(V)
Temperature (C)
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APW7008
Typical Opeating Characteristics (Cont.)
StartUp in 1x Mode
StartUp in 1.5x Mode
IIN (100mA/div)
4 LEDs at 20mA VF=3.1V, VIN=4V
IIN (100mA/div)
4 LEDs at 20mA VF=3.1V, VIN=3.3V
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)
StartUp in 2x Mode
Dimming in 1x 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)
TIME (2ms/div)
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APW7008
Typical Operating Characteristics (Cont.)
Dimming in 1.5x Mode
Dimming in 2x Mode
ILED (10mA/div)
ILED (10mA/div)
VOUT (1V/div)
VOUT (1V/div)
CTRL0 (1V/div)
4 LEDs at 20mA, VF=3.1V VIN=3.3V, f=200Hz
CTRL0 (1V/div)
4 LEDs at 20mA, VF=3.1V, VIN=2.7V, f=200Hz
TIME (2ms/div)
TIME (2ms/div)
OVP Even with LED Open Circuit
Line Transient Response in 1x to 1.5x Mode
VIN (1V/div)
ILED (10mA/div)
4 LEDs at 20mA, VF=3.1V VIN=3.2V to 3.8V
VOUT (1V/div)
VOUT (1V/div)
VIN (1V/div) 4 LEDs at 20mA VF=3.1V, VIN=4V LED1 is open
ILED (20mA/div)
TIME (0.2ms/div)
TIME (0.1ms/div)
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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)
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APW7008
Function Description
Soft-Start The APW7008 provides the soft-start function to limit the inrush current during start-up. When the input voltage is supplied to the device and exceeds the UVLO voltage, the output capacitor is charged directly from input with a limited current source. Approximate 100s after the output voltage approaches the input voltage, the device starts to provide the programmed LED current and determines which of 1x and 1.5x, or 2x mode is required. When the programmed LED current can be reached with 1x mode, the soft-start is completed and the device operates in 1x mode. When the programmed LED current cannot be reached, the charge pump goes into 1.5x mode. If the 1.5x mode charge pump cannot suffice for the LED current need, the charge pump will switch to 2x mode. Mode Transition The APW7008 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 APW7008 operates in 1x mode, the VOUT is pulled up to the VIN. When the VIN decreases, the VILED will decease to maintain the regulated LED current. Until the VILED is below 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 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 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 that in the 1x mode for as long as possible to increase the efficiency and extend the operating range by using 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 where VF is the forward voltage of LED IOUT is the output current ROUT1X is the output impedance in 1x mode = 1.6 ROUT1.5X is the output impedance in 1.5x mode = 7
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Control Logic Pins The APW 7008 provides three logic input pins to enable or disable a combination of LEDs. Table1 shows the truth table of the logic pins. If the LED channels are not used, connecting the ILED pins to VOUT to turn off the respective LED channels.
Control Logic Pin CTRL2 0 0 0 0 1 1 1 1 CTRL1 0 0 1 1 0 0 1 1 CTRL0 0 1 0 1 0 1 0 1 LED4 OFF OFF OFF ON OFF OFF ON OFF LED Status LED3 OFF OFF ON OFF OFF ON ON OFF LED2 OFF ON OFF OFF ON ON ON OFF LED1 ON OFF OFF OFF ON ON ON OFF
Table 1. The Truth Table of Control Logic Pins LED Current Setting Connect a resistor from ISET pin to GND to set the LED current. The ISET voltage is typically 1.2V, the LED current is typically 400 times the current through the ISET resistor. The LED current is given by:
R SET = 400 x 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.
ILED (mA) 5 10 15 20 30 RSET (k) 92 47 32 24 16.5
Table 2. RSET Value Selection
APW7008
Function Description (Cont.)
LED Current Setting (Cont.)
400 350 300 250 RSET (Ohm) 200 150 100 50 0 0 5 10 15 ILED (mA) 20 25 30
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 2A. 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.
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APW7008
Application Information
Capacitor Selection For lower input and output voltage ripples, both input and output capacitors should be larger values and lower
LED Current (mA) 20 18 16 14 12 10 8 6 4 2 0 0 10 20 30 40 50 60 70 80 90 100 Dimming Duty (%) f=40kHz f=50kHz f=10kHz f=100Hz LED=20mA VIN=2.7V, 2x mode
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' currents at low input voltage. s It is recommended that the low ESR and low variation over temperature, such as the ceramic capacitors with X7R or X5R and the value is 1F for the input capacitor, output capacitor, and the charge pump flying capacitors. Brightness Control 1. PWM dimming using CTRL0, CTRL1, CTRL2 The first method for dimming the LEDs is to apply a PWM signal into the CTRL0, CTRL1, and CTRL2 pins. Figure 2 shows the application circuit. 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. Figure 3 shows the LED current vs. dimming frequency and dimming duty, the recommend dimming frequency is below 10kHz. The average LED current is calculated by the following equation:
ILED( avg) = toff x ILED(max) ton + toff
Figure 3. PWM Dimming Frequency vs. LED Current 2. Analog dimming with analog voltage The second method for dimming the LEDs is to apply a voltage through a resistor into the ISET pin. The variation of LED current is proportional to the variation of the analog voltage. If the resistor values are chosen correctly, the analog control voltage varies the output current from 0mA to full LED current. Figure4 shows the application circuit. See the table2 and choose the required maximum LED current and the corresponsive RSET value, using the below equation to calculate the values of R1 and R2, note that the VADJ will need to be greater than 1.2V.
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 ton is the on time of the PWM signal
VIN
Where: VISET = 1.2V VADJ = the analog voltage for dimming the LEDs RSET = the equivalent RSET resistance (see table 2).
APW7008
OFF ON PWM 1 2 3 4
APW7008 EN
R2 ISET 5 VADJ R1
CTRL0 CTRL1 CTRL2
Figure 4. Analog Voltage Dimming Application Circuit Figure 2. PWM Dimming Application Circuit
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APW7008
Application Information (Cont.)
Brightness Control (Cont.) 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 5 shows the application circuit.
APW7008 ISET 5 R1
Layout Consideration The APW7008 is a high frequency charge pump for white LED driver and requires some care when laying out the 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 thermal vias. Place the CIN, COUT, C1, and C2 as close to IC as possible for reducing the switching noise.
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 x 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
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APW7008
Package Information
QFN3x3-16
D A
E
Pin 1
D2 A1 A3
e S Y M B O L A A1 A3 b D D2 E E2 e L K 0.30 0.20 0.18 2.90 1.50 2.90 1.50 0.50 BSC 0.50 0.012 0.008
Note : 1. Followed from JEDEC MO-220 WEED-4.
QFN3x3-16 MILLIMETERS MIN. 0.80 0.00 0.20 REF 0.30 3.10 1.80 3.10 1.80 0.007 0.114 0.059 0.114 0.059 0.020 BSC 0.020 MAX. 1.00 0.05 MIN. 0.031 0.000 0.008 REF 0.012 0.122 0.071 0.122 0.071 INCHES MAX. 0.039 0.002
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LK
E2
Pin 1 Corner
b
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APW7008
Carrier Tape & Reel Dimensions
P0 P2 P1
OD0
A E1 F
K0 B SECTION A-A
B0
A0
OD1 B
A
SECTION B-B
T
d
Application
A 330O .00 2
H 50 MIN. P1 8.0O .10 0
H A
T1
T1
C
d
D
W
W
E1
F 5.5O .05 0 K0
12.4+2.00 13.0+0.50 -0.00 -0.20 1.5 MIN. P2 2.0O .05 0 D0 1.5+0.10 -0.00 D1 1.5 MIN.
20.2 MIN. 12.0O .30 1.75O .10 0 0 T A0 B0
QFN3x3-16
P0 4.0O .10 0
0.6+0.00 0 0 0 -0.40 3.30O .20 3.30O .20 1.30O .20
(mm)
Devices Per Unit
Package Type QFN3x3-16 Unit Tape & Reel Quantity 3000
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APW7008
Taping Direction Information
QFN3x3-16
USER DIRECTION OF FEED
Classification Profile
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APW7008
Classification Reflow Profiles
Profile Feature 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 (tP)** within 5C of the specified classification temperature (Tc) Average ramp-down rate (Tp to Tsmax) Time 25C to peak temperature Sn-Pb Eutectic Assembly 100 C 150 C 60-120 seconds 3 C/second max. 183 C 60-150 seconds See Classification Temp in table 1 20** seconds 6 C/second max. 6 minutes max. Pb-Free Assembly 150 C 200 C 60-120 seconds 3C/second max. 217 C 60-150 seconds See Classification Temp in table 2 30** seconds 6 C/second max. 8 minutes max.
* 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 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 <350 235 C 220 C
3
Volume mm 350 220 C 220 C Volume mm 350-2000 260 C 250 C 245 C
3
3
Table 2. Pb-free Process - Classification Temperatures (Tc) 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 Description 5 Sec, 245C 1000 Hrs, Bias @ 125C 168 Hrs, 100%RH, 2atm, 121C 500 Cycles, -65C~150C VHBMU2KV, VMMU200V 10ms, 1trU 100mA
Copyright (c) ANPEC Electronics Corp. Rev. A.3 - Feb., 2009
20
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 (c) ANPEC Electronics Corp. Rev. A.3 - Feb., 2009
21
www.anpec.com.tw

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