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Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
General Description
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. These ICs are available in the tiny package of QFN-3x3-16.
Features
* * * * * * * * * * * 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: -40C to 85C
Applications
* * *
Mobile Phone PDA MP3/4
QFN-3x3-16
Figure 1. Package Type of AP3606/AP3607
Dec. 2008
Rev. 1. 2 1
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Pin Configuration
FN Package (QFN-3x3-16)
VOUT1 VOUT2
VOUT1
NC
Pin 1 Dot by Marking
Pin 1 Dot by Marking
VOUT2
D1
16
15
14
13 12
16
15
14
C1C2C2+ C1+
1 2 3 4 5 6 7 8
D2 D3 D4 NC
Exposed PAD, Connected to AGND
C1C2C2+ C1+
1 2 3 4 5 6 7 8
D2
13 12 D3 11 D4 10 D5 9
EP
11 10 9
EP
D1
D6 Exposed PAD, Connected to AGND
AGND
PGND
VIN
AGND
PGND
VIN
EN
Note: Pin 14 should be connected with Pin 16 on PCB Board.
Note: Pin 15 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
1 2 3 4 5 6 7 8 9, 15 9, 10 10, 11, 12, 11, 12, 13, 13 14 14 16 15 16 1 2 3 4 5 6 7 8 C1C2C2+ C1+ AGND PGND VIN EN NC D6 , D5 D4 ~ D1 VOUT2 VOUT1
Function
Flying capacitor 1 negative terminal. The flying capacitor should be connected as close to this pin as possible Flying capacitor 2 negative terminal. The flying capacitor should be connected as close to this pin as possible Flying capacitor 2 positive terminal. The flying capacitor should be connected as close to this pin as possible Flying capacitor 1 positive terminal. The flying capacitor should be connected as close to this pin as possible Analog ground Power ground Supply voltage input 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. No connection (AP3606 only) 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) 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 Output pin 2. It powers 4 channels current sink (AP3606) and 6 channels current sink (AP3607) Output Pin 1. It's the charge pump output. The output capacitor should be placed closely to this pin BCD Semiconductor Manufacturing Limited 2
Dec. 2008
Rev. 1. 2
EN
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Functional Block Diagram
C11 7
C1+
4
C22
C2+
3 16 5
VIN
1x /1.5x Charge Pump
VOUT1 AGND
1MHz OSC
8
Current Limitation Soft Start UVLO OTSD OVP
6
EN
Shutdown Delay 16 Steps Pulse Dimming Controller
PGND
4 Channels Current Sink
13 12 11 10
14
VOUT2
D1
AP3606
D2
D3
D4
C1- C1+
1 4
C2- C2+
2 3 16
VIN
7
1x /1.5x Charge Pump
VOUT1 AGND
5
1MHz OSC
Current Limitation Soft Start OVP
6
EN
8
Shutdown Delay
UVLO
OTSD
PGND
16 Steps Pulse Dimming Controller
6 Channels Current Sink
14 13 12 11 10 9
15
VOUT2
D1 D2 D3 D4 D5 D6
AP3607
Figure 3. Functional Block Diagram of AP3606/AP3607
Dec. 2008
Rev. 1. 2 3
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Ordering Information
AP36XX -
Circuit Type 06: AP3606 07: AP3607 Package FN: QFN-3x3-16
G1: Green TR: Tape and Reel
Package
QFN-3x3-16
Temperature Range
-40 to 85C
Part Number
AP3606FNTR-G1 AP3607FNTR-G1
Marking ID
B1B 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
VIN VOUT VEN VC+ VCVD JA TJ TSTG TLEAD
Value
-0.3 to 6 -6 to 0.3 -0.3 to 6 -0.3 to 6 -6 to 0.3 VOUT to VIN 60 150 -65 to 150 260
Unit
V V V V V V C/W C C C
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.
Dec. 2008
Rev. 1. 2 4
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Recommended Operating Conditions
Parameter
Input Voltage Operating Ambient Temperature
Symbol
VIN TA
Min
2.7 -40
Max
5.5 85
Unit
V C
Electrical Characteristics
VIN=3.6V, VEN=VIN, TA=25C, CIN=C1=C2=COUT=1F, VF(forward voltage)=3.2V, unless otherwise noted. Parameter
Input Section Input Voltage Under Voltage Lockout Threshold Under Voltage Lockout Hysteresis Supply Current Shutdown Supply Current Charge Pump Section Switch Frequency fOSC VIN=3.0V, 1.5x Mode AP3606 1x Mode to 1.5x Mode Transition Voltage (VIN Falling) V1.5X AP3607 AP3606 1.5x Mode to 1x Mode Transition Voltage (VIN Rising) V1X AP3607 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 0.7 1 1.3 MHz ICC ISHDN No Load VEN=GND VIN ID=0mA to 80mA VIN Falling 2.7 2.2 250 1.7 3 3 10 5.5 V V mV mA A
Symbol
Conditions
Min
Typ
Max
Unit
3.5
3.6
V
3.7
3.8
V
Current Source Section WLED Current ID 100% Setting, 3.0VVIN5.0V TA=-40C to 85C 18.5 20 21.5 mA
Dec. 2008
Rev. 1. 2 5
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Electrical Characteristics (Continued)
VIN=3.6V, VEN=VIN, TA=25C, CIN=C1=C2=COUT=1F, VF(forward voltage)=3.2V, unless otherwise noted. Parameter
Current Matching Between any Two Outputs
Symbol
AP3606 ID-Match1 AP3607 AP3606
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
Min
-3
Typ
Max
3
Unit
%
Current Matching Between any Two Outputs
ID-Match2 AP3607
-3.5
3.5
%
Enable Section EN High Level Threshold Voltage EN Low Level Threshold Voltage EN Input Current EN Low to Shutdown Delay EN Low Time for Dimming EN High Time for Dimming Total Device Soft-start Time tSS AP3606 AP3607 AP3606 Inrush Current IINRUSH AP3607 Over Voltage Protection Thermal Shutdown Thermal Shutdown Hysteresis Thermal Resistance (Junction to Case) VOVP TOTSD THYS Note 2 ID=80mA Total ID=120mA Total VIN=3.2V, ID=80mA Total VIN=3.2V, ID=120mA Total 200 200 mA 320 5.5 160 20 QFN-3x3-16 15 V C C C/W s VIH VIL IEN tSHDN tLO tHI 0.45 0.45 VEN= 0V to 5V 1 1.5 0.5 10 1 500 V V A ms s s
JC
Note 2: Open circuit at any WLED that is programmed to be in the on state.
Dec. 2008
Rev. 1. 2 6
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics
TA=25C, CIN=C1=C2=COUT=1F, VF=3.2V, unless otherwise noted.
4.0
4.0
Shutdown Supply Current (A)
3.5
Shutdown Supply Current (A)
3.5
3.0
3.0
2.5
2.5
2.0
2.0
1.5
AP3606 VIN=3.2V Shut Down
1.5
AP3607 VIN=3.6V Shut Down
1.0 -40
-20
0
20
40
60
O
80
100
120
140
1.0 -40
-20
0
20
40
60
o
80
100
120
140
Temperature ( C)
Temperature ( C)
Figure 4. Shutdown Supply Current vs. Temperature
Figure 5. Shutdown Supply Current vs. Temperature
2.2
4.4
2.0
4.0
Quiescent Current (mA)
Quiescent Current (mA)
1.8
3.6
1.6
3.2
1.4
AP3606/AP3607 o TA=25 C VIN=5V No Load 1x Mode
-20 0 20 40 60
O
2.8
AP3606/AP3607 o TA=25 C VIN=3.2V No Load 1.5x Mode
-20 0 20 40 60
O
1.2
2.4
1.0 -40
80
100
120
140
2.0 -40
80
100
120
140
Temperature ( C)
Temperature ( C)
Figure 6. 1x Mode Quiescent Current vs. Temperature
Figure 7. 1.5x Mode Quiescent Current vs. Temperature
Dec. 2008
Rev. 1. 2 7
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics (Continued)
TA=25C, CIN=C1=C2=COUT=1F, VF=3.2V, unless otherwise noted.
22
22
21
AP3606 VIN=5V WLED Current (mA) TA=25 C
O
21
AP3606 VIN=3.2V TA=25 C
O
WLED Current (mA)
20
20
19
19
18
ID1 ID2 ID3 ID4
18
ID1 ID2 ID3 ID4
17
17
16 -40
-20
0
20
40
60
O
80
100
120
140
16 -40
-20
0
20
40
60
O
80
100
120
140
Temperature ( C)
Temperature ( C)
Figure 8. 1x Mode WLED Current vs. Temperature
Figure 9. 1.5x Mode WLED Current vs. Temperature
22
22
21
AP3607 o TA=25 C WLED Current (mA) VIN=5V
21
AP3607 o TA=25 C VIn =3.6V
WLED Current (mA)
20
20
19
ID1 ID2 ID3 ID4 ID5 ID6
19
ID1 ID2 ID3 ID4 ID5 ID6
18
18
17
17
16 -40
-20
0
20
40
60
O
80
100
120
140
16 -40
-20
0
20
40
60
O
80
100
120
140
Temperature ( C)
Temperature ( C)
Figure 10. 1x Mode WLED Current vs. Temperature
Figure 11. 1.5x Mode WLED Current vs. Temperature
Dec. 2008
Rev. 1. 2 8
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics (Continued)
TA=25C, CIN=C1=C2=COUT=1F, VF=3.2V, unless otherwise noted.
22
22
21
21
WLED Current (mA)
WLED Current (mA)
20
20
19
19
ID1 ID2 ID3 ID4 ID5 ID6
3.6 4.0 4.4 4.8 5.2 5.6
18
ID1 AP3606 O TA=25 C VIN Falling ID2 ID3 ID4
18
17
17
AP3607 o TA=25 C VIN Falling
16 2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
16 2.8
3.2
Input Voltage (V)
Input Voltage (V)
Figure 12. WLED Current vs. Input Voltage
Figure 13. WLED Current vs. Input Voltage
1.4
1.4
1.2
1.2
Frequency (MHz)
Frequency (MHz)
1.0
1.0
0.8
0.8
0.6
AP3606 VIN=3.6V ID1=ID2=ID3=ID4=20mA
0.6
AP3607 VIN=3.6V ID1=ID2=ID3=ID4=ID5=ID6=20mA
0.4 -40
-20
0
20
40
60
o
80
100
120
140
0.4 -40
-20
0
20
40
60
o
80
100
120
140
Temperature( C)
Temperature ( C)
Figure 14. Frequency vs. Temperature
Figure 15. Frequency vs. Temperature
Dec. 2008
Rev. 1. 2 9
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics (Continued)
TA=25C, CIN=C1=C2=COUT=1F, VF=3.2V, unless otherwise noted.
2.2
2.6
2.0
UVLO Threshold Voltage (V)
2.5
Power Falling Power Rising
Quiescent Current (mA)
2.4
1.8
2.3
1.6
2.2
1.4
AP3606/AP3607 o TA=25 C No Load VIN Rising
2.1
1.2
2.0
AP3606/AP3607 o TA=25 C No Load
1.0 2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1.9 -40
-20
0
20
40
60
o
80
100
120
140
Input Voltage (V)
Temperature ( C)
Figure 16. 1x Mode Quiescent Current vs. Input Voltage
Figure 17. UVLO Threshold Voltage vs. Temperature
100 90 80
100 90 80
Efficiency (%)
70 60 50 40 30 20 10 2.8
Efficiency (%)
70 60 50 40 30 20 10 2.8
AP3606 o TA=25 C VIN from High to Low ID1=ID2=ID3=ID4=20mA
3.2 3.6 4.0 4.4 4.8 5.2 5.6
AP3607 o TA=25 C VIN from High to Low 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
Figure 19. Efficiency vs. Input Voltage
Dec. 2008
Rev. 1. 2 10
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics (Continued)
TA=25C, CIN=C1=C2=COUT=1F, VF=3.2V, unless otherwise noted.
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div Time (100s/div)
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div Time (400s/div)
Figure 20. 1x Mode Turn on Characteristic (AP3606)
Figure 21. 1x Mode Turn off Characteristic (AP3606)
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div Time (100s/div)
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div
Time (400s/div)
Figure 22. 1x Mode Turn on Characteristic (AP3607)
Figure 23. 1x Mode Turn off Characteristic (AP3607)
Dec. 2008
Rev. 1. 2 11
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics (Continued)
TA=25C, CIN=C1=C2=COUT=1F, VF=3.2V, unless otherwise noted.
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div Time (100s/div)
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div
Time (400s/div)
Figure 24. 1.5x Mode Turn on Characteristic (AP3606)
Figure 25. 1.5x Mode Turn off Characteristic (AP3606)
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div Time (100s/div)
VC1+ 2V/div VOUT 1V/div VEN 2V/div IIN 0.2A/div
Time (400s/div)
Figure 26. 1.5x Mode Turn on Characteristic (AP3607)
Figure 27. 1.5x Mode Turn off Characteristic (AP3607)
Dec. 2008
Rev. 1. 2 12
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Performance Characteristics (Continued)
TA=25C, CIN=C1=C2=COUT=1F, 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)
VIN 20mV/div IIN 20mA/div VOUT 50mV/div VC1+ 2V/div
IIN 20mA/div VIN 20mV/div VOUT 50mV/div VC1+ 2V/div
Time (400ns/div)
Time (400ns/div)
Figure 30. Output Ripple (AP3606, VIN=3.3V, ID=80mA)
Figure 31. Output Ripple (AP3607, VIN=3.3V, ID=120mA)
Dec. 2008
Rev. 1. 2 13
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
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.
Dec. 2008
Rev. 1. 2 14
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Application
3 WLEDs
4 WLEDs
Dec. 2008
Rev. 1. 2 15
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Typical Application (Continued)
5 WLEDs
C1
1F
C2
1F
D1 1 7 Li-ion Battery CIN 1F C14 C1+ 2 C23 C2+ D1 D2 8 15 16 COUT 1F 5 EN VOUT2 VOUT1 AGND PGND 6 14 13 12 11 10 9
D2
D3
D4
D5
D6
VIN
Pulse Input
AP3607
D3 D4 D5 D6
6 WLEDs
Figure 33. Typical Applications of AP3606/AP3607
Detailed application information, please refer to AP3606/AP3607 application note.
Dec. 2008
Rev. 1. 2 16
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER AP3606/AP3607
Mechanical Dimensions QFN-3x3-16 Unit: mm(inch)
Dec. 2008
Rev. 1. 2 17
BCD Semiconductor Manufacturing Limited
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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