Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER General Description Features The AP3606 and AP3607 are step-up DC-DC converters based on 1x/1.5x charge pump and low dropout current sink, which helps them maintain the highest efficiency. The AP3606 is specially designed to drive up to 4 WLEDs in backlight display while the AP3607 is designed for 6 WLEDs. • • • • • • • • • • • These devices provide up to 20mA current for each WLED. There are totally 16 steps of current control, which is achieved through a digital pulse dimming function on EN pin. Additionally, 1MHz high switching frequency enables the use of small external capacitors. Internal soft-start circuitry prevents excessive inrush current during start-up and mode transition. The supply voltage ranges of AP3606 and AP3607 are from 2.7V to 5.5V which make them ideally suit for applications powered by Li-ion battery. AP3606/AP3607 Regulated Output Current with ±3% Matching Drives up to 4 WLEDs at 20mA Each (AP3606) Drives up to 6 WLEDs at 20mA Each (AP3607) 16 Steps Brightness Control Using Pulse Signal Dimming Wide Operating Voltage Range: 2.7V to 5.5V High Operating Frequency: 1MHz Auto 1x/1.5x Charge Pump Mode Selection Built-in Soft-start Output Over Voltage Protection Built-in UVLO Built-in OTSD Operating Temperature Range: -40°C to 85°C Applications • • • These ICs are available in the tiny package of QFN-3×3-16. Mobile Phone PDA MP3/4 QFN-3×3-16 Figure 1. Package Type of AP3606/AP3607 Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 1 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Pin Configuration VOUT2 D1 VOUT1 VOUT2 D1 D2 14 13 16 15 14 13 11 D3 2 EP 10 D4 C2+ 3 NC C1+ 4 5 6 7 8 VIN EN 9 PGND 4 Exposed PAD, Connected to AGND 12 D3 11 D4 EP 10 D5 9 5 6 7 8 EN 3 1 C2- VIN C2+ C1- PGND 2 D2 12 AGND 15 1 C2- C1+ 16 Pin 1 Dot by Marking AGND C1- NC Pin 1 Dot by Marking VOUT1 FN Package (QFN-3×3-16) D6 Exposed PAD, Connected to AGND Note: Pin 15 should be connected with Pin 16 on PCB Board. Note: Pin 14 should be connected with Pin 16 on PCB Board. AP3606 AP3607 Figure 2. Pin Configuration of AP3606/AP3607 (Top View) Pin Description Pin Number Pin Name AP3606 AP3607 Function 1 1 C1- Flying capacitor 1 negative terminal. The flying capacitor should be connected as close to this pin as possible 2 2 C2- Flying capacitor 2 negative terminal. The flying capacitor should be connected as close to this pin as possible 3 3 C2+ Flying capacitor 2 positive terminal. The flying capacitor should be connected as close to this pin as possible 4 4 C1+ Flying capacitor 1 positive terminal. The flying capacitor should be connected as close to this pin as possible 5 5 AGND Analog ground 6 6 PGND Power ground 7 7 VIN Supply voltage input 8 8 EN Enable control input. Logic high enables the IC; while logic low forces the IC into shutdown mode. It is used for digital dimming by applying a pulse signal on it. NC No connection (AP3606 only) 9, 15 9, 10 10, 11, 12, 11, 12, 13, 13 14 D6 , D5 Current sink for WLED6 and WLED5. Connect the cathode of WLEDs to these pins. If not used, these pins must be connected with VIN (AP3607 only) D4 ~ D1 Current sink for WLED4, 3, 2, 1. Connect the cathode of WLEDs to these pins. If not used, these pins must be connected with VIN 14 15 VOUT2 Output pin 2. It powers 4 channels current sink (AP3606) and 6 channels current sink (AP3607) 16 16 VOUT1 Output Pin 1. It’s the charge pump output. The output capacitor should be placed closely to this pin Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Functional Block Diagram VIN C1- C1+ 1 4 7 C22 8 3 16 1x /1.5x Charge Pump VOUT1 5 AGND 6 PGND 14 VOUT2 Current Limitation 1MHz OSC EN C2+ OVP Soft Start Shutdown Delay OTSD UVLO 16 Steps Pulse Dimming Controller 4 Channels Current Sink 13 D1 12 D2 11 D3 10 D4 AP3606 C2- C2+ C1- C1+ 1 VIN 7 4 3 2 1x /1.5x Charge Pump 1MHz OSC EN Shutdown Delay VOUT1 5 AGND Current Limitation OVP Soft Start 8 16 6 UVLO OTSD 16 Steps Pulse Dimming Controller 15 6 Channels Current Sink 14 13 12 11 10 PGND VOUT2 9 D1 D2 D3 D4 D5 D6 AP3607 Figure 3. Functional Block Diagram of AP3606/AP3607 Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 3 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Ordering Information AP36XX - Circuit Type G1: Green 06: AP3606 07: AP3607 TR: Tape and Reel Package FN: QFN-3×3-16 Package Temperature Range QFN-3×3-16 -40 to 85°C Part Number Marking ID AP3606FNTR-G1 B1B AP3607FNTR-G1 B1C Packing Type Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green package. Absolute Maximum Ratings (Note 1) Parameter Input Voltage VOUT Pin Voltage (VOUT1 & VOUT2) EN Pin Voltage C1+, C2+ Pin Voltage C1-, C2- Pin Voltage D1, D2, D3, D4 Pin Voltage AP3606 D1, D2, D3, D4, D5, D6 Pin Voltage AP3607 Thermal Resistance (Junction to Ambient, No Heat Sink, Free Air) Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10sec) Symbol Value Unit VIN VOUT VEN VC+ VC- -0.3 to 6 -6 to 0.3 -0.3 to 6 -0.3 to 6 -6 to 0.3 V V V V V VD VOUT to VIN V θJA 60 ºC/W TJ TSTG TLEAD 150 -65 to 150 260 ºC ºC ºC Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 4 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Recommended Operating Conditions Parameter Symbol Min Max Unit Input Voltage VIN 2.7 5.5 V Operating Ambient Temperature TA -40 85 ºC Electrical Characteristics VIN=3.6V, VEN=VIN, TA=25ºC, CIN=C1=C2=COUT=1µF, VF(forward voltage)=3.2V, unless otherwise noted. Parameter Symbol Conditions Min Typ Max Unit 5.5 V Input Section Input Voltage VIN Under Voltage Lockout Threshold ID=0mA to 80mA 2.7 VIN Falling Under Voltage Lockout Hysteresis Supply Current Shutdown Supply Current ICC No Load ISHDN VEN=GND fOSC VIN=3.0V, 1.5x Mode 2.2 V 250 mV 1.7 3 mA 3 10 µA 1 1.3 MHz 3.5 3.6 V 3.7 3.8 V 20 21.5 mA Charge Pump Section Switch Frequency VD=3.2V, ID1=ID2=ID3=ID4=20mA VD=3.2V, ID1=ID2=ID3=ID4= ID5=ID6=20mA VD=3.2V, ID1=ID2=ID3=ID4=20mA VD=3.2V, ID1=ID2=ID3=ID4= ID5=ID6=20mA AP3606 1x Mode to 1.5x Mode Transition Voltage (VIN Falling) V1.5X 1.5x Mode to 1x Mode Transition Voltage (VIN Rising) V1X 0.7 AP3607 AP3606 AP3607 Current Source Section WLED Current Jul. 2010 ID 100% Setting, 3.0V≤VIN≤5.0V TA=-40ºC to 85ºC Rev. 1. 4 18.5 BCD Semiconductor Manufacturing Limited 5 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Electrical Characteristics (Continued) VIN=3.6V, VEN=VIN, TA=25ºC, CIN=C1=C2=COUT=1µF, VF(forward voltage)=3.2V, unless otherwise noted. Parameter Current Matching Between any Two Outputs Symbol Conditions VD1=VD2=VD3=VD4= 3.2V VD1=VD2=VD3=VD4= VD5=VD6=3.2V VD1=VD2=VD3=VD4=3.0 V to 4.0V VIN=3.2V to 5.0V VD1=VD2=VD3=VD4= VD5=VD6=3.0V to 4.0V VIN=3.2V to 5.0V AP3606 ID-Match1 AP3607 AP3606 Current Matching Between any Two Outputs Min ID-Match2 AP3607 Typ Max Unit -3 3 % -3.5 3.5 % Enable Section EN High Level Threshold Voltage VIH EN Low Level Threshold Voltage VIL EN Input Current IEN 1.5 VEN= 0V to 5V V 1 EN Low to Shutdown Delay tSHDN EN Low Time for Dimming tLO 0.45 EN High Time for Dimming tHI 0.45 0.5 V 10 µA 1 ms 500 µs µs Total Device Soft-start Time tSS AP3606 ID=80mA Total AP3607 ID=120mA Total VIN=3.2V, ID=80mA Total VIN=3.2V, ID=120mA Total AP3606 Inrush Current IINRUSH AP3607 Over Voltage Protection VOVP Thermal Shutdown Note 2 200 µs 200 mA 320 5.5 V TOTSD 160 ºC Thermal Shutdown Hysteresis THYS 20 ºC Thermal Resistance (Junction to Case) θJC 15 ºC/W QFN-3×3-16 Note 2: Open circuit at any WLED that is programmed to be in the on state. Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 6 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. 4.0 Shutdown Supply Current (µA) Shutdown Supply Current (µA) 4.0 3.5 3.0 2.5 2.0 AP3606 VIN=3.2V 1.5 1.0 -40 0 20 40 60 80 100 120 3.0 2.5 2.0 AP3607 VIN=3.6V 1.5 Shut Down -20 3.5 1.0 -40 140 Shut Down -20 0 20 O 2.0 4.0 Quiescent Current (mA) Quiescent Current (mA) 4.4 1.8 1.6 AP3606/AP3607 o TA=25 C VIN=5V 1.0 -40 No Load 1x Mode -20 0 20 40 60 100 120 140 80 100 3.6 3.2 AP3606/AP3607 o TA=25 C 2.8 VIN=3.2V 2.4 120 2.0 -40 140 O Temperature ( C) No Load 1.5x Mode -20 0 20 40 60 80 100 120 140 O Temperature ( C) Figure 7. 1.5x Mode Quiescent Current vs. Temperature Figure 6. 1x Mode Quiescent Current vs. Temperature Jul. 2010 80 Figure 5. Shutdown Supply Current vs. Temperature 2.2 1.2 60 Temperature ( C) Figure 4. Shutdown Supply Current vs. Temperature 1.4 40 o Temperature ( C) Rev. 1. 4 BCD Semiconductor Manufacturing Limited 7 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics (Continued) TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. 22 21 O 20 19 ID1 18 ID2 ID3 17 16 -40 0 20 40 60 80 100 120 TA=25 C 20 19 ID1 18 ID2 ID3 17 ID4 -20 AP3606 VIN=3.2V O TA=25 C WLED Current (mA) WLED Current (mA) 21 22 AP3606 VIN=5V 16 -40 140 ID4 -20 0 20 Figure 8. 1x Mode WLED Current vs. Temperature 80 100 AP3607 o TA=25 C 21 WLED Current (mA) VIN=5V 19 ID1 ID2 ID3 18 AP3607 o TA=25 C VIn =3.6V 20 ID1 19 ID2 ID3 18 ID4 ID4 ID5 17 ID5 17 ID6 ID6 -20 0 20 40 60 80 100 120 16 -40 140 -20 0 20 40 60 80 100 120 140 O Temperature ( C) O Temperature ( C) Figure 10. 1x Mode WLED Current vs. Temperature Jul. 2010 140 22 20 16 -40 120 Figure 9. 1.5x Mode WLED Current vs. Temperature 22 WLED Current (mA) 60 Temperature ( C) Temperature ( C) 21 40 O O Figure 11. 1.5x Mode WLED Current vs. Temperature Rev. 1. 4 BCD Semiconductor Manufacturing Limited 8 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics (Continued) 22 22 21 21 WLED Current (mA) WLED Current (mA) TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. 20 19 18 AP3606 O TA=25 C 17 VIN Falling 16 2.8 3.2 ID1 ID2 ID3 4.0 4.4 4.8 5.2 19 ID1 ID2 18 ID4 ID5 VIN Falling 16 2.8 5.6 ID3 AP3607 o TA=25 C 17 ID4 3.6 20 3.2 ID6 3.6 4.0 Input Voltage (V) 1.4 1.4 1.2 1.2 1.0 0.8 AP3606 VIN=3.6V -20 0 20 40 60 5.6 0.8 AP3607 VIN=3.6V 0.6 ID1=ID2=ID3=ID4=ID5=ID6=20mA 80 100 120 0.4 -40 140 -20 0 20 40 60 80 100 120 140 o o Temperature ( C) Temperature( C) Figure 14. Frequency vs. Temperature Jul. 2010 5.2 1.0 ID1=ID2=ID3=ID4=20mA 0.4 -40 4.8 Figure 13. WLED Current vs. Input Voltage Frequency (MHz) Frequency (MHz) Figure 12. WLED Current vs. Input Voltage 0.6 4.4 Input Voltage (V) Figure 15. Frequency vs. Temperature Rev. 1. 4 BCD Semiconductor Manufacturing Limited 9 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics (Continued) TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. 2.6 2.2 UVLO Threshold Voltage (V) Quiescent Current (mA) 2.0 1.8 1.6 AP3606/AP3607 o TA=25 C 1.4 No Load VIN Rising 1.2 1.0 2.0 2.5 3.0 3.5 4.0 4.5 Power Falling Power Rising 2.5 2.4 2.3 2.2 2.1 AP3606/AP3607 o TA=25 C 2.0 No Load 5.0 1.9 -40 5.5 -20 0 20 90 90 80 80 70 70 Efficiency (%) Efficiency (%) 100 60 50 AP3606 o TA=25 C 10 2.8 3.6 4.0 4.4 140 4.8 5.2 AP3607 o TA=25 C VIN from High to Low 20 10 2.8 5.6 ID1=ID2=ID3=ID4=ID5=ID6=20mA 3.2 3.6 4.0 4.4 4.8 5.2 5.6 Input Voltage (V) Input Voltage (V) Figure 18. Efficiency vs. Input Voltage Jul. 2010 120 50 30 ID1=ID2=ID3=ID4=20mA 3.2 100 60 40 VIN from High to Low 20 80 Figure 17. UVLO Threshold Voltage vs. Temperature 100 30 60 o Figure 16. 1x Mode Quiescent Current vs. Input Voltage 40 40 Temperature ( C) Input Voltage (V) Figure 19. Efficiency vs. Input Voltage Rev. 1. 4 BCD Semiconductor Manufacturing Limited 10 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics (Continued) TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. VC1+ 2V/div VOUT 1V/div VC1+ 2V/div VOUT 1V/div VEN 2V/div VEN 2V/div IIN 0.2A/div IIN 0.2A/div Time (100µs/div) Time (400µs/div) Figure 20. 1x Mode Turn on Characteristic (AP3606) Figure 21. 1x Mode Turn off Characteristic (AP3606) VC1+ 2V/div VOUT 1V/div VC1+ 2V/div VOUT 1V/div VEN 2V/div VEN 2V/div IIN 0.2A/div IIN 0.2A/div Time (100µs/div) Time (400µs/div) Figure 22. 1x Mode Turn on Characteristic (AP3607) Jul. 2010 Figure 23. 1x Mode Turn off Characteristic (AP3607) Rev. 1. 4 BCD Semiconductor Manufacturing Limited 11 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics (Continued) TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. VC1+ 2V/div VC1+ 2V/div VOUT 1V/div VOUT 1V/div VEN 2V/div VEN 2V/div IIN 0.2A/div IIN 0.2A/div Time (100µs/div) Time (400µs/div) Figure 24. 1.5x Mode Turn on Characteristic (AP3606) Figure 25. 1.5x Mode Turn off Characteristic (AP3606) VC1+ 2V/div VC1+ 2V/div VOUT 1V/div VOUT 1V/div VEN 2V/div VEN 2V/div IIN 0.2A/div IIN 0.2A/div Time (100µs/div) Time (400µs/div) Figure 26. 1.5x Mode Turn on Characteristic (AP3607) Jul. 2010 Figure 27. 1.5x Mode Turn off Characteristic (AP3607) Rev. 1. 4 BCD Semiconductor Manufacturing Limited 12 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Performance Characteristics (Continued) TA=25ºC, CIN=C1=C2=COUT=1µF, VF=3.2V, unless otherwise noted. VEN 2V/div VEN 2V/div IWLED 5mA/div IWLED 5mA/div Time (2ms/div) Time (2ms/div) Figure 28. 1x Mode Dimming Operation ( AP3606, VIN=5V, fEN=2kHz) Figure 29. 1x Mode Dimming Operation (AP3607, VIN=5V, fEN=2kHz) IIN 20mA/div VIN 20mV/div VIN 20mV/div IIN 20mA/div VOUT 50mV/div VC1+ 2V/div VOUT 50mV/div VC1+ 2V/div Time (400ns/div) Time (400ns/div) Figure 30. Output Ripple (AP3606, VIN=3.3V, ID=80mA) Jul. 2010 Figure 31. Output Ripple (AP3607, VIN=3.3V, ID=120mA) Rev. 1. 4 BCD Semiconductor Manufacturing Limited 13 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Digital Dimming Operating Diagram Figure 32. Digital Dimming Operating Diagram of AP3606/AP3607 Note 3: The dimming control can be achieved by applying a pulse to the EN pin. When the low level duration time of pulse is between TLOmin and TLOmax, and the high level duration time is larger than THImin, the LED current will decrease 1/16. If the low level duration time is larger than TSHDNmax, the IC will be turned off. When AP3606/AP3607 is powered on, the WLED is in full brightness. And it will keep maximum current until the pulse is detected. After 15 pulses the WLED current decreases to 1/16 of full brightness. It will increase to full brightness if a pulse is added to EN pin then. Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 14 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Application 3 WLEDs 4 WLEDs Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 15 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Typical Application (Continued) 5 WLEDs C1 1 F C2 1 F D1 7 Li-ion Battery CIN 1 4 2 3 C1- C1+ C2- C2+ VIN D1 Pulse Input 1 F D2 8 15 16 COUT 5 AP3607 EN D3 VOUT2 D4 VOUT1 D5 AGND PGND 1 F D6 D2 D3 D4 D5 D6 14 13 12 11 10 9 6 6 WLEDs Figure 33. Typical Applications of AP3606/AP3607 Detailed application information, please refer to AP3606/AP3607 application note. Jul. 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 16 Data Sheet 4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607 Mechanical Dimensions QFN-3×3-16 2.900(0.114) 3.100(0.122) Pin 1 Identification Pin 1 Identification Unit: mm(inch) Pin1 0.300(0.012) 0.500(0.020) 0.180(0.007) 2.900(0.114) 3.100(0.122) 0.280(0.011) 0.500(0.020) BSC Bottom View Exposed Pad 1.700(0.068) Ref 1.700(0.068) Ref 0.700(0.028) 0.900(0.035) 0.178(0.007) 0.228(0.009) Jul. 2010 0.000(0.000) 0.050(0.002) Rev. 1. 4 BCD Semiconductor Manufacturing Limited 17 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. 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