AP3030 Features Inherently Uniform Current High Efficiency Need E
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AP3030 inductor-based DC/DC converter designed drive eight white LEDs series rows LEDs with each parallel backlight. Only feedback resistor needed control current obtain required brightness. constant frequency 1.2MHz control scheme employed this which means tiny external components used. Specifically, tall inductor 0.22µF output capacitor typical application sufficient. Additionally, schottky diode boost circuit integrated this chip. AP3030 also provides disable ease different systems. output over-voltage protection implemented AP3030. When broken other abnormal conditions, output voltage will clamped 30V. AP3030 available standard SOT-23-6 TSOT-23-6 packages.
AP3030 Features
Inherently Uniform Current High Efficiency Need External Schottky Diode Output Over-Voltage Protection (OVP) Drives LEDs Series Rows LEDs with Each Parallel Fixed 1.2MHz Switching Frequency Uses Tiny Tall Inductor Requires Only 0.22µF Output Capacitor
Applications
Cellular Phones Digital Cameras modules Receivers PDAs, Handheld Computers
SOT-23-6
TSOT-23-6
Figure Package Types AP3030
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Configuration
K/KT Package (SOT-23-6/TSOT-23-6)
Marking
AP3030
VOUT CTRL
Figure Configuration AP3030 (Top View)
Description
Number Name CTRL VOUT Switch Pin. Connect external inductor Ground Voltage Feedback. Reference voltage 200mV Shutdown Dimming Pin. Connect 1.8V higher enable device; Connect 50mV less disable device; Connect voltage between 1.8V 50mV achieve linear dimming Output Pin. Connected cathode internal schottky diode Input Supply Pin. Must locally bypassed Function
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Functional Block Diagram
SOFT START
AP3030
VOUT
VREF 1.25
COMPARATOR
DRIVER
CTRL
RAMP GENERATOR
OSCILLATOR
Figure Functional Block Diagram AP3030
Ordering Information
AP3030 Circuit Type Package SOT-23-6 TSOT-23-6 Lead Free Green Tape Reel
Package
SOT-23-6 TSOT-23-6
Temperature Range
85oC
Part Number Lead Free AP3030KTR-E1 AP3030KTTR-E1 Green AP3030KTR-G1
Marking Lead Free Green
Packing Type
Tape Reel Tape Reel
AP3030KTTR-G1
Semiconductor's Pb-free products, designated with "E1" suffix part number, RoHS compliant. Products with "G1" suffix available green packages.
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Absolute Maximum Ratings (Note
Parameter Input Voltage Voltage Voltage CTRL Voltage Thermal Resistance (Junction Atmosphere, Heat Sink) Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) (Machine Model) (Human Body Model) Symbol VCTRL TSTG TLEAD Value 2000 Unit
oC/W
AP3030
Note Stresses greater than those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "Recommended Operating Conditions" implied. Exposure "Absolute Maximum Ratings" extended periods affect device reliability.
Recommended Operating Conditions
Parameter Operating Temperature Range Input Voltage CTRL Voltage Symbol VCTRL Unit
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Electrical Characteristics
(VIN=3V, VCTRL =3V, TA=25oC, unless otherwise specified.)
Parameter Minimum Operating Voltage Maximum Operating Voltage Feedback Voltage Bias Current Quiescent Current Shutdown Quiescent Current Switch Frequency Maximum Duty Cycle Switch Current Limit (Note Switch Saturation Voltage Switch Leakage Current CTRL Voltage VCTRL Symbol VIN(min) VIN(max) ISHDN DMAX ILIMIT VCESAT D=40% D=80% ISW=250mA VSW=5V High CTRL Bias Current ICTRL TA=85oC TA=-40oC Schottky Forward Drop Schottky Leakage Current Soft Start Time VDROP ID=150mA VR=23V VR=27V 0.05 VFB=VIN, switching VCTRL=0V IOUT=20mA, LEDs, TA=-40oC 85oC 0.01 Conditions Unit
AP3030
Note switch current limit related duty cycle. Please refer Figure detail.
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Typical Performance Characteristics
(VF(forward voltage) WLED 3.45V IF=20mA, unless otherwise noted
AP3030
Efficiency
Efficiency
VIN=3.6V, IOUT=20mA, 8LEDs CIN=1µF, COUT=0.22µF, L=22µH
IOUT=20mA, 8LEDs,TA=25 CIN=1µF, COUT=0.22µF, L=22µH
Junction Temperature
Input Voltage
Figure Efficiency Junction Temperature
Figure Efficiency Input Voltage
Schottky Forward Current (mA)
Efficiency
VIN=3.6V, IOUT=20mA,TA=25 CIN=1µF, COUT=0.22µF, L=22µH
1000
LED's Number
Schottky Forward Drop (mV)
Figure Efficiency LED's Number
Figure Schottky Forward Current Schottky Forward Drop
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Typical Performance Characteristics (Continued)
(VF(forward voltage) WLED 3.45V IF=20mA, unless otherwise noted
AP3030
Shutdown Quiescent Current (µA)
Quiescent Current (mA)
Input Voltage
Input Voltage
Figure Shutdown Quiescent Current Input Voltage
Figure Quiescent Current Input Voltage
Output Clamp Voltage
Input Current (mA)
Input Voltage
Input Voltage
Figure Output Clamp Voltage Input Voltage
Figure Input Current Output Open Circuit Input Voltage
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Typical Performance Characteristics (Continued)
(VF(forward voltage) WLED 3.45V IF=20mA, unless otherwise noted
AP3030
1.40 1.35 1.30
Feedback Voltage (mV)
1.25
Frequency (MHz)
1.20 1.15 1.10 1.05 1.00 0.95 0.90
Junction Temperature
Junction Temperature
Figure Switch Frequency Junction Temperature
Figure Feedback Voltage Junction Temperature
0.80 0.78
0.50 0.45
Schottky Leakage Current (µA)
VR=10V VR=16V VR=23V
0.76
0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00
Schottky Forward Drop
0.74 0.72 0.70 0.68 0.66 0.64 0.62 0.60
Junction Temperature
Junction Temperature
Figure Schottky Forward Drop Junction Temperature
Figure Schottky Leakage Current Junction Temperature
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Typical Performance Characteristics (Continued)
(VF(forward voltage) WLED 3.45V IF=20mA, unless otherwise noted
AP3030
Saturation Voltage (mV)
Current Limit (mA)
Switch Current (mA)
Duty Cycle
Figure Switch Current Limit Duty Cycle
Figure Switch Saturation Voltage Switch Current
Feedback Voltage (mV)
CTRL Voltage
Figure Feedback Voltage CTRL Voltage
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Typical Application
AP3030
Control Signal
CTRL
VOUT
COUT
AP3030
0.22µF
Dielectric SUMIDA CDRH5D28R-220NC Equivalent This circuit work full temperature
Figure Typical Application Eight Drivers
Control Signal
CTRL
VOUT
COUT
AP3030
0.22µF
Dielectric SUMIDA CDRH5D28R-220NC Equivalent transistors recommended Dual Matched transistor pairs This circuit work full temperature
Figure Typical Application Drivers
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Mechanical Dimensions SOT-23-6 Unit: mm(inch) AP3030
2.820(0.111) 3.020(0.119) 0.300(0.012) 0.400(0.016) 0.300(0.012) 0.600(0.024)
0.200(0.008)
2.650(0.104) 2.950(0.116)
Marking
0.700(0.028)REF
0.950(0.037)TYP 1.800(0.071) 2.000(0.079) 0.000(0.000) 0.100(0.004) 0.100(0.004) 0.200(0.008)
1.050(0.041) 1.050(0.041) 1.150(0.045) 1.250(0.049)
Aug. 2008 Rev.
1.500(0.059) 1.700(0.067)
Semiconductor Manufacturing Limited
Preliminary Datasheet WHITE STEP-UP CONVERTER Mechanical Dimensions TSOT-23-6 Unit: mm(inch) AP3030
2.800(0.110) 3.000(0.118)
R0.100(0.004)
1.500(0.059) 1.700(0.067)
Marking
2.600(0.102) 3.000(0.118)
0.370(0.015)
0.950(0.037) 1.900(0.075) GAUGE PLANE
0.100(0.004) 0.250(0.010)
0.250(0.010)
0.700(0.028) 0.800(0.031)
0.700(0.030) 0.900(0.035)
0.000(0.000) 0.100(0.004)
0.350(0.014) 0.510(0.020)
Aug. 2008 Rev.
Semiconductor Manufacturing Limited
Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE Semiconductor Manufacturing Limited reserves right make changes without further notice products specifications herein. Semiconductor Manufacturing Limited does assume responsibility products particular purpose, does Semiconductor Manufacturing Limited assume liability arising application products circuits. Semiconductor Manufacturing Limited does convey license under patent rights other rights rights others.
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