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Data Sheet |
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MICRO POWER STEP-UP DC-DC CONVERTER |
AP3015/A |
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General Description |
Features |
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The AP3015/A are Pulse Frequency Modulation |
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Low Quiescent Current |
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(PFM) DC/DC converters. These two devices are func- |
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In Active Mode (Not Switching): 17µA Typical |
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tionally equivalent except the switching current limit. |
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In Shutdown Mode: <1µA |
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The AP3015 is designed for higher power systems |
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Low Operating VIN |
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with 350mA current limit, and the AP3015A is for |
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1.2V Typical for AP3015 |
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lower power systems with 100mA current limit. |
1.0V Typical for AP3015A |
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The AP3015/A feature a wide input voltage. The operation voltage is ranged from 1.2Vto 12V (1V to 12V for AP3015A). A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. They also feature low quiescent current, switching current limiting, low temperature coefficient, etc.
Fewer tiny external components are required in the applications to save space and lower cost. Furthermore, to ease its use in differnet systems, a disable terminal is designed to turn on or turn off the chip.
The AP3015/A are available in SOT-23-5 package.
·Low VCESAT Switch
200mV Typical at 300mA for AP3015 70mV Typical at 70mA for AP3015A
·High Output Voltage: up to 34V
·Fixed Off-Time Control
·Switching Current Limiting 350mA Typical for AP3015 100mA Typical for AP3015A
·Operating Temperature Range: -40oC to 85oC
Applications
·MP3, MP4
·Battery Power Supply System
·LCD/OLED Bias Supply
·Handheld Device
·Portable Communication Device
SOT-23-5
Figure 1. Package Type of AP3015/A
May 2010 Rev. 1. 4 |
BCD Semiconductor Manufacturing Limited |
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Data Sheet |
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MICRO POWER STEP-UP DC-DC CONVERTER |
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AP3015/A |
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Pin Configuration |
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K Package |
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(SOT-23-5) |
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SW |
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VIN |
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5 |
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GND |
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FB |
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SHDN |
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4 |
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Figure 2. Pin Configuration of AP3015/A (Top View)
Pin Description
Pin Number |
Pin Name |
Function |
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1 |
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SW |
Switch Pin. This is the collector of the internal NPN power switch. Minimize the trace area |
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connected to this Pin to minimize EMI |
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GND |
Ground Pin. GND should be tied directly to ground plane for best performance |
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3 |
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FB |
Feedback Pin. Set the output voltage through this pin. The formula is VOUT=1.23V*(1+R1/ |
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R2). Keep the loop between Vout and FB as short as possible to minimize the ripple and noise, |
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which is beneficial to the stability and output ripple |
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4 |
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Shutdown Control Pin. Tie this pin above 0.9V to enable the device. Tie below 0.25V to turn |
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SHDN |
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off the device |
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5 |
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VIN |
Supply Input Pin. Bypass this pin with a capacitor as close to the device as possible |
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May 2010 Rev. 1. 4 |
BCD Semiconductor Manufacturing Limited |
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Data Sheet |
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MICRO POWER STEP-UP DC-DC CONVERTER |
AP3015/A |
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Functional Block Diagram
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FEEDBACK |
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COMPARATOR |
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FB |
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ENABLE |
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1 |
SW |
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5 |
VREF |
400nS |
DRIVER |
Q1 |
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ONE SHOT |
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VIN |
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Bandgap |
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RESET |
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4 |
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CURRENT-LIMIT |
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GND |
SHDN |
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CURRENT-LIMIT |
REFERENCE |
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COMPARATOR
Figure 3. Functional Block Diagram of AP3015/A
Ordering Information
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AP3015 |
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Circuit Type |
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E1: Lead Free |
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G1: Green |
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Blank: AP3015 |
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TR: Tape and Reel |
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Package |
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A: AP3015A |
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K: SOT-23-5 |
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Package |
Temperature |
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Part Number |
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Marking ID |
Packing Type |
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Lead Free |
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Green |
Lead Free |
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Green |
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SOT-23-5 |
-40 to 85oC |
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AP3015KTR-E1 |
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AP3015KTR-G1 |
E6E |
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G6E |
Tape & Reel |
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AP3015AKTR-E1 |
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AP3015AKTR-G1 |
E6F |
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G6F |
Tape & Reel |
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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.
May 2010 Rev. 1. 4 |
BCD Semiconductor Manufacturing Limited |
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Data Sheet |
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MICRO POWER STEP-UP DC-DC CONVERTER |
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AP3015/A |
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Absolute Maximum Ratings (Note 1) |
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Parameter |
Symbol |
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Input Voltage |
VIN |
15 |
V |
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SW Voltage |
VSW |
38 |
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FB Voltage |
VFB |
VIN |
V |
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Pin Voltage |
V |
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15 |
V |
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SHDN |
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SHDN |
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Thermal Resistance (Junction to Ambient, no Heat sink) |
RθJA |
265 |
oC/W |
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Operating Junction Temperature |
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TJ |
150 |
oC |
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Storage Temperature Range |
TSTG |
-65 to 150 |
oC |
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Lead Temperature (Soldering, 10sec) |
TLEAD |
260 |
oC |
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ESD (Human Body Model) |
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3000 |
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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.
Recommended Operating Conditions
Parameter |
Symbol |
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Input Voltage |
VIN |
AP3105 |
1.2 |
12 |
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AP3105A |
1.0 |
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Operating Temperature |
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-40 |
85 |
oC |
May 2010 Rev. 1. 4 |
BCD Semiconductor Manufacturing Limited |
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