AP3012 high power, constant frequency, current mode PWM, inductor base
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Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER General Description
AP3012 high power, constant frequency, current mode PWM, inductor based, step-up (boost) converter. converter operates high frequency (1.5MHz) that small, profile inductor used. AP3012 built-in overvoltage protection (OVP) allow device goes into shutdown mode when output voltage exceeds threshold 29V. AP3012 available standard SOT-23-5L package.
AP3012 Features
High Efficiency Adjustable Output Voltage Shutdown Current Typical 1.5MHz Switching Frequency 500mA Rugged Integrated Bipolar Switch Built-in Soft-Start Reduce Inrush Current During Start-up On-chip Overvoltage Protection Uses Ceramic Output Capacitor Uses Smll Inductor
Applications
LCD/OLED Display Bias Supply White Driver Display Backlights Cellular Phones
SOT-23-5L
Figure Package Type AP3012
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Configuration
Package (SOT-23-5L)
AP3012
SHDN
Figure Configuration AP3012 (Top View)
Description
Number Name Function Switch Pin. Connect inductor/diode here. output voltage should exceed this limit. voltage this higher than overvoltage protection (OVP) threshold, device into shutdown mode. restarted high pulse SHDN pin, power reset supply Ground Pin. Connect directly local ground plane Feedback Pin. Internally compares 1.25V. Connect resistor divider here. Calculate Output Voltage according formula: VOUT=1.25V (1+R1/R2) Shutdown Pin. Connect 1.5V higher enable device (ON), 0.4V lower disable device (OFF) Input Supply Pin. Must locally bypassed
SHDN
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Functional Block Diagram AP3012
DRIVER
COMPARATOR
VREF 1.25V SOFT START
SHDN
SHUTDOWN
RAMP GENERATOR
1.5MHz OSCILLATOR
Figure Functional Block Diagram AP3012
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Ordering Information AP3012
AP3012 Circuit Type Package SOT-23-5L
Lead Free Tape Reel
Package
SOT-23-5L
Temperature Range
85oC
Part Number Lead Free
AP3012KTR-E1
Marking Lead Free
Packing Type
Tape Reel
Semiconductor's Pb-free products, designated with "E1" suffix part number, RoHS compliant.
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Absolute Maximum Ratings (Note
Parameter Input Voltage Voltage Voltage SHDN Voltage Thermal Resistance (Junction Atmosphere, Heat sink) Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) (Machine Model) (Human Body Model) TSTG TLEAD Symbol Value 2000 Unit
oC/W
AP3012
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 Input Voltage Operating Temperature Symbol Unit
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Electrical Characteristics
(VIN=3V, VSHDN=3V, TA=25oC, unless otherwise specified.)
Parameter Minimum Operating Voltage Maximum Operating Voltage Feedback Voltage Bias Current Supply Current Supply Current Switching Frequency Maximum Duty Cycle Switching Current Limit Switch VCESAT Switch Leakage Current SHDN Voltage High (ON) SHDN Voltage (OFF) SHDN Bias Current Voltage Threshold Soft-Start Time VOVP VCESAT DMAX Duty Cycle=80% ISW=250mA VSW=5V VIN=5V, VOUT=24V, IOUT=30mA VFB=1.25V VSHDN =VFB=VIN, switching VSHDN =0V, VFB=0V 1.17 1.25 0.01 Symbol Conditions Unit
AP3012
1.33
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Typical Performance Characteristics AP3012
SHDN Bias Current (µA)
Quiescent Current (mA)
SHDN=10V SHDN=3.6V SHDN=3V SHDN=2.7V
Junction Temperature
Figure Quiescent Current Input Voltage
Figure SHDN Bias Current Junction Temperature
Switching Frequency (MHz)
Feedback Bias Current (nA)
Junction Temperature
Junction Temperature
Figure Switching Frequency Junction Temperature
Figure Feedback Bias Current Junction Temperature
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Typical Performance Characteristics (Continued) AP3012
1200
1000
Switching Current Limit (mA)
Efficiency
VIN=5V VOUT=24V IOUT=30mA
Junction Temperature
Duty Cycle
Figure Efficiency Junction Temperature
Figure Switching Current Limit Duty Cycle
1.29
1.28
VIN=5V VOUT=24V IOUT=30mA
Feedback Voltage
Efficiency
1.27
1.26
1.25
VIN=3.0V VIN=3.6V VIN=4.2V VIN=5.0V VOUT=24V L=10µH
1.24
Junction Temperature
Output Current (mA)
Figure Feedback Voltage Junction Temperature
Figure Efficiency Output Current
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Typical Application
1N5819
AP3012
VOUT
92.82K SHDN 5.1K RLOAD
AP3012
Note: Dielectric SUMIDA CDTH3D14/HPNP-100NC Equivalent Figure LCD/OLED Display Bias Driver Typical Circuit
Jul. 2006 Rev.
Semiconductor Manufacturing Limited
Data Sheet 1.5MHz STEP-UP DC-DC CONVERTER Mechanical Dimensions SOT-23-5L Unit: mm(inch) AP3012
2.820(0.111) 3.020(0.119)
0.100(0.004) 0.200(0.008)
2.650(0.104)
2.950(0.116)
1.500(0.059) 1.700(0.067)
0.200(0.008)
0.700(0.028)
0.950(0.037)
0.300(0.012) 0.400(0.016) 1.800(0.071) 2.000(0.079)
0.300(0.012) 0.600(0.024)
1.050(0.041)
1.250(0.049)
0.000(0.000) 0.100(0.004)
1.050(0.041) 1.150(0.045)
Jul. 2006 Rev.
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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Semiconductor Manufacturing Limited
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